{"id":4852,"date":"2026-04-13T07:03:10","date_gmt":"2026-04-13T07:03:10","guid":{"rendered":"https:\/\/flj-pcb.com\/?p=4852"},"modified":"2026-04-13T07:03:15","modified_gmt":"2026-04-13T07:03:15","slug":"choosing-pcb-for-your-project","status":"publish","type":"post","link":"https:\/\/flj-pcb.com\/vi\/choosing-pcb-for-your-project\/","title":{"rendered":"L\u1ef1a ch\u1ecdn PCB cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Hi\u1ec3u v\u1ec1 nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 PCB: C\u00e1c lo\u1ea1i, v\u1eadt li\u1ec7u v\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a ch\u00fang \u0111\u1ed1i v\u1edbi d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n<\/h2>\n\n\n\n<p>Khi m\u1ed9t nh\u00e0 thi\u1ebft k\u1ebf l\u1ea7n \u0111\u1ea7u ti\u1ebfp x\u00fac v\u1edbi b\u1ea3ng m\u1ea1ch in, s\u1ef1 \u0111a d\u1ea1ng phong ph\u00fa c\u1ee7a ch\u00fang c\u00f3 th\u1ec3 khi\u1ebfn h\u1ecd c\u1ea3m th\u1ea5y cho\u00e1ng ng\u1ee3p. V\u1ec1 b\u1ea3n ch\u1ea5t, m\u1ed9t b\u1ea3ng m\u1ea1ch in (PCB) l\u00e0 m\u1ed9t c\u1ea5u tr\u00fac x\u1ebfp ch\u1ed3ng c\u00e1c l\u1edbp d\u1eabn \u0111i\u1ec7n v\u00e0 c\u00e1ch \u0111i\u1ec7n, c\u00f3 ch\u1ee9c n\u0103ng h\u1ed7 tr\u1ee3 c\u01a1 h\u1ecdc v\u00e0 k\u1ebft n\u1ed1i \u0111i\u1ec7n cho c\u00e1c linh ki\u1ec7n. C\u00e1c l\u1ef1a ch\u1ecdn trong c\u1ea5u tr\u00fac n\u00e0y \u2014 lo\u1ea1i b\u1ea3ng m\u1ea1ch, v\u1eadt li\u1ec7u n\u1ec1n, \u0111\u1ed9 d\u00e0y \u0111\u1ed3ng v\u00e0 l\u1edbp ho\u00e0n thi\u1ec7n \u2014 s\u1ebd tr\u1ef1c ti\u1ebfp quy\u1ebft \u0111\u1ecbnh hi\u1ec7u su\u1ea5t, chi ph\u00ed v\u00e0 kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c lo\u1ea1i b\u1ea3ng<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>B\u1ea3ng m\u1ea1ch m\u1ed9t m\u1eb7t<\/strong> \u2013 Ch\u1ec9 c\u00f3 m\u1ed9t l\u1edbp \u0111\u1ed3ng ch\u1ee9a c\u00e1c \u0111\u01b0\u1eddng m\u1ea1ch. Ch\u00fang r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n \u0111\u01a1n gi\u1ea3n, c\u00e1c d\u1ef1 \u00e1n s\u1edf th\u00edch ho\u1eb7c c\u00e1c m\u1eabu th\u1eed nghi\u1ec7m chi ph\u00ed th\u1ea5p. Kh\u1ea3 n\u0103ng b\u1ed1 tr\u00ed m\u1ea1ch h\u1ea1n ch\u1ebf c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m m\u1eadt \u0111\u1ed9 linh ki\u1ec7n, nh\u01b0ng c\u00e1ch b\u1ed1 tr\u00ed \u0111\u01a1n gi\u1ea3n gi\u00fap r\u00fat ng\u1eafn th\u1eddi gian thi\u1ebft k\u1ebf.<\/li>\n\n\n\n<li><strong>B\u1ea3ng hai m\u1eb7t<\/strong> \u2013 Hai l\u1edbp \u0111\u1ed3ng, m\u1ed7i m\u1eb7t m\u1ed9t l\u1edbp, \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi nhau b\u1eb1ng c\u00e1c l\u1ed7 xuy\u00ean m\u1ea1. Thi\u1ebft k\u1ebf n\u00e0y gi\u00fap t\u0103ng g\u1ea5p \u0111\u00f4i c\u00e1c l\u1ef1a ch\u1ecdn \u0111\u01b0\u1eddng d\u1eabn v\u00e0 l\u00e0 ti\u00eau chu\u1ea9n ph\u1ed5 bi\u1ebfn trong l\u0129nh v\u1ef1c \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng. N\u00f3 v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c m\u1ee9c gi\u00e1 ph\u1ea3i ch\u0103ng \u0111\u1ed3ng th\u1eddi mang l\u1ea1i nh\u1eefng c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 v\u1ec1 t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u.<\/li>\n\n\n\n<li><strong>B\u1ea3ng m\u1ea1ch nhi\u1ec1u l\u1edbp<\/strong> \u2013 V\u1edbi b\u1ed1n l\u1edbp tr\u1edf l\u00ean, c\u00f3 th\u1ec3 b\u1ed1 tr\u00ed c\u00e1c l\u1edbp ri\u00eang bi\u1ec7t cho ngu\u1ed3n \u0111i\u1ec7n, l\u1edbp \u0111\u1ea5t v\u00e0 l\u1edbp t\u00edn hi\u1ec7u. C\u00e1c thi\u1ebft k\u1ebf t\u1ea7n s\u1ed1 cao ho\u1eb7c d\u00f2ng \u0111i\u1ec7n l\u1edbn s\u1ebd \u0111\u01b0\u1ee3c h\u01b0\u1edfng l\u1ee3i t\u1eeb vi\u1ec7c gi\u1ea3m tr\u1edf kh\u00e1ng v\u00e0 kh\u1ea3 n\u0103ng kh\u1eed nhi\u1ec5u t\u1ed1t h\u01a1n. \u0110\u1ed5i l\u1ea1i, chi ph\u00ed s\u1ea3n xu\u1ea5t s\u1ebd cao h\u01a1n v\u00e0 dung sai thi\u1ebft k\u1ebf ph\u1ea3i ch\u1eb7t ch\u1ebd h\u01a1n.<\/li>\n<\/ul>\n\n\n\n<p>M\u1ed7i lo\u1ea1i \u0111\u00e1p \u1ee9ng m\u1ed9t nh\u00f3m y\u00eau c\u1ea7u d\u1ef1 \u00e1n kh\u00e1c nhau. \u0110\u1ed1i v\u1edbi c\u1ea3m bi\u1ebfn \u0111eo \u0111\u01b0\u1ee3c, b\u1ea3ng m\u1ea1ch hai m\u1eb7t c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ee7 kh\u00f4ng gian b\u1ed1 tr\u00ed m\u1ea1ch \u0111\u1ed3ng th\u1eddi gi\u1eef cho thi\u1ebft b\u1ecb m\u1ecfng. Ng\u01b0\u1ee3c l\u1ea1i, m\u00f4-\u0111un v\u00f4 tuy\u1ebfn t\u00edn hi\u1ec7u h\u1ed7n h\u1ee3p th\u01b0\u1eddng c\u1ea7n thi\u1ebft k\u1ebf s\u00e1u l\u1edbp \u0111\u1ec3 c\u00e1ch ly c\u00e1c \u0111\u01b0\u1eddng d\u1eabn RF kh\u1ecfi nhi\u1ec5u k\u1ef9 thu\u1eadt s\u1ed1.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u1eadt li\u1ec7u n\u1ec1n<\/h3>\n\n\n\n<p>Ch\u1ea5t n\u1ec1n, \u0111\u00f4i khi c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201cv\u1eadt li\u1ec7u c\u01a1 b\u1ea3n\u201d, quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc, hi\u1ec7u su\u1ea5t nhi\u1ec7t v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t \u0111i\u1ec7n m\u00f4i.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>FR-4 (s\u1ee3i th\u1ee7y tinh ph\u1ee7 epoxy)<\/strong> \u2013 L\u00e0 v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay, FR\u20114 mang l\u1ea1i s\u1ef1 c\u00e2n b\u1eb1ng t\u1ed1t gi\u1eefa \u0111\u1ed9 b\u1ec1n, chi ph\u00ed v\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n cho h\u1ea7u h\u1ebft c\u00e1c d\u1ef1 \u00e1n c\u1ee7a ng\u01b0\u1eddi \u0111am m\u00ea v\u00e0 th\u01b0\u01a1ng m\u1ea1i. Nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha th\u1ee7y tinh (Tg) c\u1ee7a n\u00f3 th\u01b0\u1eddng dao \u0111\u1ed9ng t\u1eeb 130\u202f\u00b0C \u0111\u1ebfn 150\u202f\u00b0C, khi\u1ebfn n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c chu tr\u00ecnh h\u00e0n ti\u00eau chu\u1ea9n.<\/li>\n\n\n\n<li><strong>Rogers v\u00e0 c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u \u00e9p nhi\u1ec1u l\u1edbp t\u1ea7n s\u1ed1 cao kh\u00e1c<\/strong> \u2013 C\u00e1c lo\u1ea1i polymer n\u00e0y c\u00f3 t\u1ed5n th\u1ea5t \u0111i\u1ec7n m\u00f4i th\u1ea5p h\u01a1n, m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c m\u1ea1ch vi s\u00f3ng ho\u1eb7c m\u1ea1ch s\u1ed1 t\u1ed1c \u0111\u1ed9 cao. Gi\u00e1 th\u00e0nh cao h\u01a1n c\u1ee7a ch\u00fang ph\u1ea3n \u00e1nh s\u1ef1 c\u1ea3i thi\u1ec7n v\u1ec1 hi\u1ec7u su\u1ea5t; m\u1ed9t b\u1ea3ng m\u1ea1ch Rogers ti\u00eau chu\u1ea9n c\u00f3 th\u1ec3 truy\u1ec1n d\u1eabn t\u00edn hi\u1ec7u \u1edf t\u1ea7n s\u1ed1 cao h\u01a1n 5 GHz v\u1edbi \u0111\u1ed9 suy gi\u1ea3m t\u1ed1i thi\u1ec3u.<\/li>\n\n\n\n<li><strong>B\u1ea3ng m\u1ea1ch l\u00f5i nh\u00f4m (l\u00f5i kim lo\u1ea1i)<\/strong> \u2013 \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng khi vi\u1ec7c t\u1ea3n nhi\u1ec7t l\u00e0 \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u, ch\u1eb3ng h\u1ea1n nh\u01b0 trong c\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u00e8n LED ho\u1eb7c b\u1ed9 chuy\u1ec3n \u0111\u1ed5i ngu\u1ed3n. L\u00f5i kim lo\u1ea1i gi\u00fap ph\u00e2n t\u00e1n nhi\u1ec7t ra kh\u1ecfi c\u00e1c \u0111i\u1ec3m n\u00f3ng, cho ph\u00e9p d\u00f2ng \u0111i\u1ec7n cao h\u01a1n m\u00e0 kh\u00f4ng g\u00e2y t\u0103ng nhi\u1ec7t \u0111\u1ed9 qu\u00e1 m\u1ee9c.<\/li>\n<\/ul>\n\n\n\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n ph\u00f9 h\u1ee3p \u0111\u00f2i h\u1ecfi ph\u1ea3i c\u00e2n nh\u1eafc \u0111\u1ebfn t\u1ea7n s\u1ed1 ho\u1ea1t \u0111\u1ed9ng, \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 v\u00e0 ng\u00e2n s\u00e1ch c\u1ee7a b\u1ea3ng m\u1ea1ch. Trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, FR-4 l\u00e0 \u0111\u1ee7, nh\u01b0ng vi\u1ec7c chuy\u1ec3n sang s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u laminate chuy\u00ean d\u1ee5ng c\u00f3 th\u1ec3 gi\u00fap tr\u00e1nh \u0111\u01b0\u1ee3c nh\u1eefng chi ph\u00ed thi\u1ebft k\u1ebf l\u1ea1i t\u1ed1n k\u00e9m sau n\u00e0y.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 d\u00e0y c\u1ee7a \u0111\u1ed3ng<\/h3>\n\n\n\n<p>Tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ed3ng, \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng ounce tr\u00ean m\u1ed7i foot vu\u00f4ng (oz\/ft\u00b2), quy\u1ebft \u0111\u1ecbnh kh\u1ea3 n\u0103ng d\u1eabn d\u00f2ng \u0111i\u1ec7n nh\u1ecf v\u00e0 \u0111i\u1ec7n tr\u1edf.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>1 ounce \u0111\u1ed3ng<\/strong> \u2013 \u0110\u00e2y l\u00e0 ti\u00eau chu\u1ea9n cho h\u1ea7u h\u1ebft c\u00e1c thi\u1ebft k\u1ebf; n\u00f3 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c d\u00f2ng \u0111i\u1ec7n l\u00ean \u0111\u1ebfn v\u00e0i ampe tr\u00ean c\u00e1c \u0111\u01b0\u1eddng m\u1ea1ch c\u00f3 chi\u1ec1u r\u1ed9ng v\u1eeba ph\u1ea3i.<\/li>\n\n\n\n<li><strong>2 oz ho\u1eb7c 3 oz \u0111\u1ed3ng<\/strong> \u2013 \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng khi c\u1ea7n d\u00f2ng \u0111i\u1ec7n l\u1edbn h\u01a1n ho\u1eb7c s\u1ee5t \u00e1p th\u1ea5p h\u01a1n, ch\u1eb3ng h\u1ea1n nh\u01b0 trong c\u00e1c m\u1ea1ng l\u01b0\u1edbi ph\u00e2n ph\u1ed1i \u0111i\u1ec7n. \u0110\u1ed3ng d\u00e0y h\u01a1n c\u0169ng gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u1ed9 d\u1eabn nhi\u1ec7t, t\u1eeb \u0111\u00f3 h\u1ed7 tr\u1ee3 t\u1ea3n nhi\u1ec7t tr\u00ean to\u00e0n b\u1ed9 b\u1ea3ng m\u1ea1ch.<\/li>\n<\/ul>\n\n\n\n<p>Vi\u1ec7c t\u0103ng \u0111\u1ed9 d\u00e0y l\u1edbp \u0111\u1ed3ng s\u1ebd l\u00e0m t\u0103ng chi ph\u00ed v\u1eadt li\u1ec7u v\u00e0 c\u00f3 th\u1ec3 \u0111\u00f2i h\u1ecfi ph\u1ea3i s\u1eed d\u1ee5ng m\u0169i khoan c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n cho c\u00e1c l\u1ed7 vias, t\u1eeb \u0111\u00f3 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c b\u1ea3n thi\u1ebft k\u1ebf c\u00f3 m\u1eadt \u0111\u1ed9 cao. C\u00e1c nh\u00e0 thi\u1ebft k\u1ebf th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u v\u1edbi l\u1edbp \u0111\u1ed3ng d\u00e0y 1 oz v\u00e0 ch\u1ec9 chuy\u1ec3n sang l\u1edbp \u0111\u1ed3ng d\u00e0y h\u01a1n sau khi ph\u00e2n t\u00edch d\u00f2ng \u0111i\u1ec7n x\u00e1c nh\u1eadn s\u1ef1 c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">L\u1edbp ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t<\/h3>\n\n\n\n<p>L\u1edbp ph\u1ee7 cu\u1ed1i c\u00f9ng bao ph\u1ee7 b\u1ec1 m\u1eb7t \u0111\u1ed3ng l\u1ed9 ra ngo\u00e0i c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng h\u00e0n, th\u1eddi h\u1ea1n s\u1eed d\u1ee5ng v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n. C\u00e1c lo\u1ea1i l\u1edbp ph\u1ee7 ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>HASL (L\u00e0m ph\u1eb3ng m\u1ed1i h\u00e0n b\u1eb1ng kh\u00ed n\u00f3ng)<\/strong> \u2013 M\u1ed9t ph\u01b0\u01a1ng \u00e1n chi ph\u00ed th\u1ea5p, t\u1ea1o ra b\u1ec1 m\u1eb7t s\u1eb5n s\u00e0ng \u0111\u1ec3 h\u00e0n nh\u01b0ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u1ed9 d\u00e0y kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u.<\/li>\n\n\n\n<li><strong>ENIG (M\u1ea1 niken kh\u00f4ng \u0111i\u1ec7n v\u00e0 m\u1ea1 v\u00e0ng ng\u00e2m)<\/strong> \u2013 Mang l\u1ea1i b\u1ec1 m\u1eb7t ph\u1eb3ng v\u00e0 b\u1ec1n b\u1ec9, ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c linh ki\u1ec7n c\u00f3 kho\u1ea3ng c\u00e1ch ch\u00e2n c\u1eafm nh\u1ecf v\u00e0 b\u1ea3o qu\u1ea3n l\u00e2u d\u00e0i, m\u1eb7c d\u00f9 gi\u00e1 th\u00e0nh cao h\u01a1n.<\/li>\n\n\n\n<li><strong>M\u1ea1 k\u1ebdm ho\u1eb7c b\u1ea1c<\/strong> \u2013 C\u00f3 kh\u1ea3 n\u0103ng th\u1ea5m \u01b0\u1edbt t\u1ed1t v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n kh\u00f4ng ch\u1ee9a ch\u00ec.<\/li>\n<\/ul>\n\n\n\n<p>L\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p ho\u00e0n thi\u1ec7n c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t l\u1eafp r\u00e1p, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi c\u00e1c linh ki\u1ec7n c\u00f3 kho\u1ea3ng c\u00e1ch ch\u00e2n c\u1eafm r\u1ea5t nh\u1ecf. \u0110\u1ed1i v\u1edbi l\u00f4 s\u1ea3n xu\u1ea5t th\u1eed nghi\u1ec7m, ph\u01b0\u01a1ng ph\u00e1p HASL c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn; c\u00f2n \u0111\u1ed1i v\u1edbi thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t c\u00f3 dung sai ch\u1eb7t ch\u1ebd, ph\u01b0\u01a1ng ph\u00e1p ENIG th\u01b0\u1eddng l\u00e0 l\u1ef1a ch\u1ecdn an to\u00e0n h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Nh\u1eefng l\u1ef1a ch\u1ecdn n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n nh\u01b0 th\u1ebf n\u00e0o<\/h3>\n\n\n\n<p>M\u1ed7i quy\u1ebft \u0111\u1ecbnh \u0111\u1ec1u t\u1ea1o ra nh\u1eefng t\u00e1c \u0111\u1ed9ng lan t\u1ecfa trong to\u00e0n b\u1ed9 quy tr\u00ecnh thi\u1ebft k\u1ebf. Vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1ea3ng m\u1ea1ch nhi\u1ec1u l\u1edbp v\u1edbi ch\u1ea5t n\u1ec1n t\u1ea7n s\u1ed1 cao c\u00f3 th\u1ec3 mang l\u1ea1i hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i, nh\u01b0ng c\u0169ng \u0111\u00f2i h\u1ecfi c\u00e1c quy t\u1eafc thi\u1ebft k\u1ebf nghi\u00eam ng\u1eb7t h\u01a1n v\u00e0 ng\u00e2n s\u00e1ch l\u1edbn h\u01a1n. Ng\u01b0\u1ee3c l\u1ea1i, vi\u1ec7c ch\u1ecdn b\u1ea3ng m\u1ea1ch FR-4 m\u1ed9t m\u1eb7t gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c b\u1ed1 tr\u00ed v\u00e0 gi\u1ea3m chi ph\u00ed, nh\u01b0ng c\u00f3 th\u1ec3 bu\u1ed9c ph\u1ea3i ch\u1ea5p nh\u1eadn nh\u1eefng th\u1ecfa hi\u1ec7p v\u1ec1 v\u1ecb tr\u00ed \u0111\u1eb7t linh ki\u1ec7n ho\u1eb7c t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u.<\/p>\n\n\n\n<p>M\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn th\u1ef1c ti\u1ec5n l\u00e0 b\u1eaft \u0111\u1ea7u v\u1edbi c\u1ea5u h\u00ecnh t\u1ed1i thi\u1ec3u kh\u1ea3 thi \u2014 th\u01b0\u1eddng l\u00e0 m\u1ed9t b\u1ea3ng m\u1ea1ch FR-4 hai m\u1eb7t v\u1edbi l\u1edbp \u0111\u1ed3ng d\u00e0y 1 oz v\u00e0 l\u1edbp ho\u00e0n thi\u1ec7n HASL ti\u00eau chu\u1ea9n \u2014 sau \u0111\u00f3 \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t so v\u1edbi c\u00e1c m\u1ee5c ti\u00eau c\u1ee7a d\u1ef1 \u00e1n. N\u1ebfu thi\u1ebft b\u1ecb b\u1ecb qu\u00e1 nhi\u1ec7t, ph\u00e1t ra nhi\u1ec5u qu\u00e1 m\u1ee9c ho\u1eb7c kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c y\u00eau c\u1ea7u v\u1ec1 th\u1eddi gian, nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 n\u00e2ng c\u1ea5p t\u1eebng thu\u1ed9c t\u00ednh m\u1ed9t c\u00e1ch l\u1eb7p \u0111i l\u1eb7p l\u1ea1i, ch\u1eb3ng h\u1ea1n nh\u01b0 chuy\u1ec3n sang l\u1edbp \u0111\u1ed3ng d\u00e0y h\u01a1n ho\u1eb7c th\u00eam m\u1ed9t m\u1eb7t ph\u1eb3ng n\u1ed1i \u0111\u1ea5t chuy\u00ean d\u1ee5ng tr\u00ean m\u1ed9t l\u1edbp b\u1ed5 sung.<\/p>\n\n\n\n<p>B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 m\u1ed1i quan h\u1ec7 gi\u1eefa lo\u1ea1i b\u1ea3ng m\u1ea1ch, v\u1eadt li\u1ec7u v\u00e0 l\u1edbp ho\u00e0n thi\u1ec7n, c\u00e1c k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 \u0111\u01b0a ra nh\u1eefng quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t, c\u00e2n b\u1eb1ng gi\u1eefa chi ph\u00ed, \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t, t\u1eeb \u0111\u00f3 t\u1ea1o n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc cho c\u00e1c b\u01b0\u1edbc ti\u1ebfp theo trong quy tr\u00ecnh l\u1ef1a ch\u1ecdn PCB.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">X\u00e1c \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u c\u1ee7a d\u1ef1 \u00e1n: C\u00f4ng su\u1ea5t, k\u00edch th\u01b0\u1edbc, t\u1ea7n s\u1ed1 v\u00e0 c\u00e1c h\u1ea1n ch\u1ebf v\u1ec1 m\u00f4i tr\u01b0\u1eddng<\/h2>\n\n\n\n<p>Khi m\u1ed9t nh\u00e0 thi\u1ebft k\u1ebf chuy\u1ec3n t\u1eeb nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 c\u00f4ng ngh\u1ec7 PCB sang giai \u0111o\u1ea1n th\u1ef1c ti\u1ec5n c\u1ee7a m\u1ed9t s\u1ea3n ph\u1ea9m m\u1edbi, b\u01b0\u1edbc c\u1ee5 th\u1ec3 \u0111\u1ea7u ti\u00ean l\u00e0 chuy\u1ec3n \u0111\u1ed5i c\u00e1c nhu c\u1ea7u c\u1ee7a h\u1ec7 th\u1ed1ng th\u00e0nh c\u00e1c y\u00eau c\u1ea7u c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng \u0111\u01b0\u1ee3c. Kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i \u0111i\u1ec7n, di\u1ec7n t\u00edch bo m\u1ea1ch, t\u1ea7n s\u1ed1 t\u00edn hi\u1ec7u v\u00e0 m\u00f4i tr\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a bo m\u1ea1ch l\u00e0 b\u1ed1n y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ecbnh h\u00ecnh m\u1ecdi quy\u1ebft \u0111\u1ecbnh ti\u1ebfp theo.<\/p>\n\n\n\n<p><strong>C\u00f4ng su\u1ea5t<\/strong> quy \u0111\u1ecbnh kh\u00f4ng ch\u1ec9 \u0111\u1ed9 d\u00e0y c\u1ee7a \u0111\u1ed3ng m\u00e0 c\u00f2n c\u1ea3 kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng d\u1eabn v\u00e0 vi\u1ec7c l\u1ef1a ch\u1ecdn l\u1edbp ph\u1ee7 ch\u1ed1ng h\u00e0n. M\u1ed9t m\u1ea1ch \u0111i\u1ec7n d\u00f2ng cao \u2014 ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1 ho\u1eb7c m\u00f4-\u0111un ph\u00e2n ph\u1ed1i \u0111i\u1ec7n \u2014 c\u00f3 th\u1ec3 y\u00eau c\u1ea7u 2 oz\/ft\u00b2 \u0111\u1ed3ng ho\u1eb7c h\u01a1n, trong khi giao di\u1ec7n c\u1ea3m bi\u1ebfn c\u00f4ng su\u1ea5t th\u1ea5p th\u01b0\u1eddng ch\u1ec9 c\u1ea7n 1 oz\/ft\u00b2. C\u00e1c nh\u00e0 thi\u1ebft k\u1ebf n\u00ean t\u00ednh to\u00e1n d\u00f2ng \u0111i\u1ec7n t\u1ed1i \u0111a tr\u00ean m\u1ed7i \u0111\u01b0\u1eddng d\u1eabn theo ti\u00eau chu\u1ea9n IPC-2221, sau \u0111\u00f3 th\u00eam m\u1ed9t bi\u00ean \u0111\u1ed9 an to\u00e0n \u00edt nh\u1ea5t l\u00e0 20\u202f% \u0111\u1ec3 \u1ee9ng ph\u00f3 v\u1edbi c\u00e1c \u0111\u1ec9nh nhi\u1ec7t \u0111\u1ed9. Tr\u00ean th\u1ef1c t\u1ebf, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y gi\u00fap ng\u0103n ng\u1eeba qu\u00e1 nhi\u1ec7t v\u00e0 \u0111\u1ea3m b\u1ea3o c\u00e1c m\u1ed1i h\u00e0n \u0111\u00e1ng tin c\u1eady trong su\u1ed1t v\u00f2ng \u0111\u1eddi c\u1ee7a s\u1ea3n ph\u1ea9m.<\/p>\n\n\n\n<p><strong>K\u00edch th\u01b0\u1edbc<\/strong> C\u00e1c y\u1ebfu t\u1ed1 n\u00e0y \u0111\u1ec1u c\u00f3 t\u1ea7m quan tr\u1ecdng nh\u01b0 nhau. K\u00edch th\u01b0\u1edbc b\u00ean ngo\u00e0i c\u1ee7a v\u1ecf thi\u1ebft b\u1ecb \u0111\u1eb7t ra gi\u1edbi h\u1ea1n c\u1ee9ng v\u1ec1 di\u1ec7n t\u00edch chi\u1ebfm d\u1ee5ng c\u1ee7a b\u1ea3ng m\u1ea1ch in (PCB), v\u00e0 c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t th\u01b0\u1eddng \u0111\u01b0a ra m\u1ee9c gi\u00e1 tr\u00ean m\u1ed7i inch vu\u00f4ng, m\u1ee9c gi\u00e1 n\u00e0y s\u1ebd gi\u1ea3m m\u1ea1nh khi k\u00edch th\u01b0\u1edbc b\u1ea3ng m\u1ea1ch t\u0103ng l\u00ean. M\u1ed9t s\u1ef1 c\u00e2n b\u1eb1ng ph\u1ed5 bi\u1ebfn l\u00e0 ph\u1ea3i \u0111i\u1ec1u ch\u1ec9nh m\u1eadt \u0111\u1ed9 linh ki\u1ec7n sao cho ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a \u0111\u01b0\u1eddng d\u1eabn. \u0110\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb nh\u1ecf g\u1ecdn, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 \u0111\u1eb7t c\u00e1c linh ki\u1ec7n \u1edf c\u1ea3 hai m\u1eb7t c\u1ee7a b\u1ea3ng m\u1ea1ch, s\u1eed d\u1ee5ng c\u00e1c g\u00f3i c\u00f3 kho\u1ea3ng c\u00e1ch ch\u00e2n nh\u1ecf ho\u1eb7c s\u1eed d\u1ee5ng s\u1ed1 l\u1edbp cao h\u01a1n \u0111\u1ec3 gi\u1eef cho chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng d\u1eabn ng\u1eafn. Ng\u01b0\u1ee3c l\u1ea1i, m\u1ed9t b\u1ea3ng m\u1ea1ch l\u1edbn h\u01a1n c\u00f3 th\u1ec3 c\u00f3 c\u00e1c \u0111\u01b0\u1eddng d\u1eabn r\u1ed9ng h\u01a1n v\u00e0 kho\u1ea3ng c\u00e1ch tho\u1ea3i m\u00e1i h\u01a1n, gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c l\u1eafp r\u00e1p v\u00e0 gi\u1ea3m r\u1ee7i ro ng\u1eafn m\u1ea1ch.<\/p>\n\n\n\n<p><strong>T\u1ea7n s\u1ed1<\/strong> \u0111\u1eb7t ra m\u1ed9t lo\u1ea1t c\u00e1c y\u00eau c\u1ea7u m\u1edbi. Khi t\u1ed1c \u0111\u1ed9 thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i c\u1ee7a t\u00edn hi\u1ec7u t\u0103ng l\u00ean, b\u1ea3ng m\u1ea1ch s\u1ebd ho\u1ea1t \u0111\u1ed9ng gi\u1ed1ng nh\u01b0 m\u1ed9t \u0111\u01b0\u1eddng truy\u1ec1n, v\u00e0 vi\u1ec7c ki\u1ec3m so\u00e1t tr\u1edf kh\u00e1ng tr\u1edf n\u00ean v\u00f4 c\u00f9ng quan tr\u1ecdng. \u0110\u1ed1i v\u1edbi c\u00e1c t\u1ea7n s\u1ed1 d\u01b0\u1edbi v\u00e0i megahertz, vi\u1ec7c b\u1ed1 tr\u00ed m\u1ea1ch microstrip \u0111\u01a1n gi\u1ea3n v\u1edbi \u0111\u1ed9 r\u1ed9ng \u0111\u01b0\u1eddng d\u1eabn ti\u00eau chu\u1ea9n th\u01b0\u1eddng l\u00e0 \u0111\u1ee7. Trong kho\u1ea3ng t\u1eeb 100 MHz \u0111\u1ebfn v\u00e0i gigahertz, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf ph\u1ea3i xem x\u00e9t t\u1ed5n th\u1ea5t \u0111i\u1ec7n m\u00f4i, h\u00ecnh d\u1ea1ng \u0111\u01b0\u1eddng d\u1eabn v\u00e0 v\u1ecb tr\u00ed c\u00e1c l\u1ed7 via \u0111\u1ec3 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u. Trong c\u00e1c d\u1ea3i t\u1ea7n s\u1ed1 n\u00e0y, ch\u1ea5t n\u1ec1n c\u00f3 t\u1ed5n th\u1ea5t th\u1ea5p (ch\u1eb3ng h\u1ea1n nh\u01b0 FR-4 v\u1edbi ch\u1ec9 s\u1ed1 Tg cao h\u01a1n) v\u00e0 \u0111\u01b0\u1eddng d\u1eabn c\u00f3 tr\u1edf kh\u00e1ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t (th\u01b0\u1eddng l\u00e0 50 \u03a9) th\u01b0\u1eddng \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb. M\u1ed9t quy t\u1eafc nhanh: n\u1ebfu th\u1eddi gian t\u0103ng d\u01b0\u1edbi 1 ns, chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng d\u1eabn kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 m\u1ed9t ph\u1ea7n m\u01b0\u1eddi b\u01b0\u1edbc s\u00f3ng \u1edf t\u1ea7n s\u1ed1 m\u1ee5c ti\u00eau.<\/p>\n\n\n\n<p><strong>Nh\u1eefng h\u1ea1n ch\u1ebf v\u1ec1 m\u00f4i tr\u01b0\u1eddng<\/strong> bao g\u1ed3m c\u00e1c d\u1ea3i nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m, \u1ee9ng su\u1ea5t c\u01a1 h\u1ecdc v\u00e0 ti\u1ebfp x\u00fac v\u1edbi h\u00f3a ch\u1ea5t ho\u1eb7c b\u1ee9c x\u1ea1. V\u00ed d\u1ee5, m\u1ed9t b\u1ea3ng m\u1ea1ch \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t trong khoang \u0111\u1ed9ng c\u01a1 \u00f4 t\u00f4 ph\u1ea3i ch\u1ecbu \u0111\u01b0\u1ee3c c\u00e1c chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9 t\u1eeb \u201340\u00b0C \u0111\u1ebfn +125\u00b0C v\u00e0 ch\u1ed1ng ch\u1ecdi v\u1edbi rung \u0111\u1ed9ng. Vi\u1ec7c l\u1ef1a ch\u1ecdn ch\u1ea5t n\u1ec1n c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha th\u1ee7y tinh (Tg) cao h\u01a1n v\u00e0 s\u1eed d\u1ee5ng l\u1edbp ph\u1ee7 h\u00e0n ch\u1eafc ch\u1eafn c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng bong tr\u00f3c v\u00e0 h\u1ecfng h\u00f3c do cu\u1ed9n d\u00e2y v\u1ee1 v\u1ee5n. Ng\u01b0\u1ee3c l\u1ea1i, m\u1ed9t thi\u1ebft b\u1ecb trong nh\u00e0 d\u00e0nh cho ng\u01b0\u1eddi ti\u00eau d\u00f9ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng b\u1ea3ng m\u1ea1ch FR-4 ti\u00eau chu\u1ea9n v\u00e0 l\u1edbp ph\u1ee7 h\u00e0n th\u00f4ng th\u01b0\u1eddng, nh\u01b0ng v\u1eabn s\u1ebd c\u00f3 l\u1ee3i n\u1ebfu \u0111\u01b0\u1ee3c ph\u1ee7 l\u1edbp ch\u1ed1ng \u1ea9m n\u1ebfu v\u1ecf thi\u1ebft b\u1ecb kh\u00f4ng \u0111\u01b0\u1ee3c ni\u00eam phong.<\/p>\n\n\n\n<p>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o quy tr\u00ecnh thi\u1ebft k\u1ebf \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c m\u1ed9t c\u00e1ch khoa h\u1ecdc, nhi\u1ec1u k\u1ef9 s\u01b0 th\u01b0\u1eddng l\u1eadp m\u1ed9t b\u1ea3ng ma tr\u1eadn y\u00eau c\u1ea7u, trong \u0111\u00f3 c\u00e1c h\u00e0ng t\u01b0\u01a1ng \u1ee9ng v\u1edbi t\u1eebng kh\u1ed1i ch\u1ee9c n\u0103ng v\u00e0 c\u00e1c c\u1ed9t t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 nh\u01b0 c\u00f4ng su\u1ea5t, k\u00edch th\u01b0\u1edbc, t\u1ea7n s\u1ed1 v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng. B\u1ea3ng ma tr\u1eadn n\u00e0y gi\u00fap d\u1ec5 d\u00e0ng ph\u00e1t hi\u1ec7n c\u00e1c xung \u0111\u1ed9t \u2014 ch\u1eb3ng h\u1ea1n nh\u01b0 ph\u1ea7n \u0111\u1ea7u v\u00e0o RF t\u1ea7n s\u1ed1 cao c\u0169ng ph\u1ea3i x\u1eed l\u00fd d\u00f2ng \u0111i\u1ec7n l\u1edbn \u2014 v\u00e0 x\u00e1c \u0111\u1ecbnh th\u1ee9 t\u1ef1 \u01b0u ti\u00ean cho c\u00e1c bi\u1ec7n ph\u00e1p kh\u1eafc ph\u1ee5c.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><em>\u201cM\u1ed9t b\u1ed9 y\u00eau c\u1ea7u \u0111\u1ecbnh l\u01b0\u1ee3ng r\u00f5 r\u00e0ng l\u00e0 c\u00f4ng c\u1ee5 hi\u1ec7u qu\u1ea3 nh\u1ea5t \u0111\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c ph\u1ea3i thi\u1ebft k\u1ebf l\u1ea1i t\u1ed1n k\u00e9m \u1edf giai \u0111o\u1ea1n sau c\u1ee7a v\u00f2ng \u0111\u1eddi s\u1ea3n ph\u1ea9m.\u201d<\/em> \u2013 Chuy\u00ean gia t\u01b0 v\u1ea5n thi\u1ebft k\u1ebf PCB c\u1ea5p cao<\/p>\n<\/blockquote>\n\n\n\n<p>B\u01b0\u1edbc ti\u1ebfp theo h\u1ee3p l\u00fd l\u00e0 chuy\u1ec3n t\u1eeb c\u00e1c r\u00e0ng bu\u1ed9c c\u1ea5p cao n\u00e0y sang c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt chi ti\u1ebft c\u1ee7a b\u1ea3ng m\u1ea1ch in (PCB). Ph\u1ea7n ti\u1ebfp theo s\u1ebd ph\u00e2n t\u00edch c\u00e1ch c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ngu\u1ed3n \u0111i\u1ec7n, chi\u1ec1u r\u1ed9ng \u0111\u01b0\u1eddng d\u1eabn v\u00e0 c\u00e1c y\u00eau c\u1ea7u kh\u00e1c \u0111\u01b0\u1ee3c ph\u1ea3n \u00e1nh v\u00e0o s\u1ed1 l\u1edbp, dung sai gia c\u00f4ng v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 s\u1ea3n xu\u1ea5t kh\u00e1c, nh\u1eb1m \u0111\u1ea3m b\u1ea3o b\u1ea3ng m\u1ea1ch c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o m\u00e0 kh\u00f4ng l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u00fd \u0111\u1ed3 thi\u1ebft k\u1ebf ban \u0111\u1ea7u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0110\u1ed1i chi\u1ebfu c\u00e1c y\u00eau c\u1ea7u v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt PCB: S\u1ed1 l\u1edbp, chi\u1ec1u r\u1ed9ng \u0111\u01b0\u1eddng d\u1eabn v\u00e0 dung sai gia c\u00f4ng<\/h2>\n\n\n\n<p>Vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i c\u00e1c m\u1ee5c ti\u00eau ch\u1ee9c n\u0103ng c\u1ee7a d\u1ef1 \u00e1n th\u00e0nh c\u00e1c th\u00f4ng s\u1ed1 PCB c\u1ee5 th\u1ec3 l\u00e0 m\u1ed9t b\u01b0\u1edbc quan tr\u1ecdng gi\u00fap k\u1ebft n\u1ed1i \u00fd t\u01b0\u1edfng thi\u1ebft k\u1ebf v\u1edbi kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t. Khi ph\u1ea7n tr\u01b0\u1edbc \u0111\u00e3 l\u00e0m r\u00f5 c\u00e1c h\u1ea1n ch\u1ebf v\u1ec1 c\u00f4ng su\u1ea5t, k\u00edch th\u01b0\u1edbc, t\u1ea7n s\u1ed1 v\u00e0 m\u00f4i tr\u01b0\u1eddng, c\u00e2u h\u1ecfi ti\u1ebfp theo l\u00e0: nh\u1eefng h\u1ea1n ch\u1ebf \u0111\u00f3 \u1ea3nh h\u01b0\u1edfng nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ebfn c\u1ea5u tr\u00fac l\u1edbp c\u1ee7a b\u1ea3ng m\u1ea1ch, chi\u1ec1u r\u1ed9ng c\u1ee7a c\u00e1c \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ed3ng v\u00e0 c\u00e1c dung sai m\u00e0 nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t ph\u1ea3i \u0111\u00e1p \u1ee9ng? C\u00e2u tr\u1ea3 l\u1eddi n\u1eb1m \u1edf s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa l\u00fd thuy\u1ebft \u0111i\u1ec7n, th\u1ef1c t\u1ebf c\u01a1 kh\u00ed v\u00e0 c\u00e1c gi\u1edbi h\u1ea1n th\u1ef1c ti\u1ec5n trong s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1ed1 l\u1edbp \u2013 C\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ed9 ph\u1ee9c t\u1ea1p v\u00e0 chi ph\u00ed<\/h3>\n\n\n\n<p>M\u1ed9t b\u1ea3ng m\u1ea1ch m\u1ed9t m\u1eb7t c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n r\u1ea5t \u0111\u01a1n gi\u1ea3n, nh\u01b0ng h\u1ea7u h\u1ebft c\u00e1c d\u1ef1 \u00e1n hi\u1ec7n \u0111\u1ea1i \u0111\u1ec1u y\u00eau c\u1ea7u \u00edt nh\u1ea5t hai l\u1edbp \u0111\u1ec3 t\u00e1ch bi\u1ec7t h\u1ec7 th\u1ed1ng ph\u00e2n ph\u1ed1i \u0111i\u1ec7n kh\u1ecfi h\u1ec7 th\u1ed1ng d\u1eabn t\u00edn hi\u1ec7u. Vi\u1ec7c th\u00eam c\u00e1c l\u1edbp gi\u00fap t\u1ea1o ra c\u00e1c m\u1eb7t ph\u1eb3ng chuy\u00ean d\u1ee5ng cho m\u1eb7t \u0111\u1ea5t v\u00e0 ngu\u1ed3n \u0111i\u1ec7n, t\u1eeb \u0111\u00f3 gi\u1ea3m dao \u0111\u1ed9ng \u0111i\u1ec7n \u00e1p v\u00e0 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n t\u1eeb (EMC). V\u00ed d\u1ee5, m\u1ed9t c\u1ea5u tr\u00fac b\u1ed1n l\u1edbp th\u01b0\u1eddng d\u00e0nh c\u00e1c l\u1edbp b\u00ean trong l\u00e0m m\u1eb7t ph\u1eb3ng m\u1eb7t \u0111\u1ea5t v\u00e0 ngu\u1ed3n \u0111i\u1ec7n li\u1ec1n m\u1ea1ch, trong khi c\u00e1c l\u1edbp b\u00ean ngo\u00e0i \u0111\u1ea3m nhi\u1ec7m vi\u1ec7c b\u1ed1 tr\u00ed linh ki\u1ec7n v\u00e0 c\u00e1c \u0111\u01b0\u1eddng d\u1eabn t\u00edn hi\u1ec7u t\u1ed1c \u0111\u1ed9 cao.<\/p>\n\n\n\n<p>Khi thi\u1ebft k\u1ebf li\u00ean quan \u0111\u1ebfn t\u00edn hi\u1ec7u t\u1ea7n s\u1ed1 cao \u2014 ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c t\u00edn hi\u1ec7u tr\u00ean 1 GHz \u2014 ho\u1eb7c c\u00e1c m\u1ea1ch ti\u1ec1n x\u1eed l\u00fd analog d\u00e0y \u0111\u1eb7c, c\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i s\u1eed d\u1ee5ng b\u1ea3ng m\u1ea1ch s\u00e1u l\u1edbp ho\u1eb7c th\u1eadm ch\u00ed t\u00e1m l\u1edbp. C\u00e1c l\u1edbp b\u1ed5 sung cho ph\u00e9p ki\u1ec3m so\u00e1t tr\u1edf kh\u00e1ng ch\u1eb7t ch\u1ebd h\u01a1n v\u00e0 t\u1ea1o ra c\u00e1c \u0111\u01b0\u1eddng d\u1eabn tr\u1edf l\u1ea1i ng\u1eafn h\u01a1n, t\u1eeb \u0111\u00f3 gi\u00fap gi\u1ea3m t\u1ed5n th\u1ea5t t\u00edn hi\u1ec7u v\u00e0 nhi\u1ec5u ch\u00e9o. Tuy nhi\u00ean, m\u1ed7i l\u1edbp b\u1ed5 sung s\u1ebd l\u00e0m t\u0103ng l\u01b0\u1ee3ng v\u1eadt li\u1ec7u \u0111i\u1ec7n m\u00f4i, chi ph\u00ed s\u1ea3n xu\u1ea5t v\u00e0 th\u1eddi gian s\u1ea3n xu\u1ea5t. C\u00e1c nh\u00e0 thi\u1ebft k\u1ebf th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u v\u1edbi m\u1ed9t b\u1ea3n thi\u1ebft k\u1ebf c\u01a1 s\u1edf hai ho\u1eb7c b\u1ed1n l\u1edbp v\u00e0 ch\u1ec9 t\u0103ng s\u1ed1 l\u1edbp n\u1ebfu qu\u00e1 tr\u00ecnh m\u00f4 ph\u1ecfng ho\u1eb7c th\u1eed nghi\u1ec7m nguy\u00ean m\u1eabu cho th\u1ea5y hi\u1ec7u su\u1ea5t kh\u00f4ng \u0111\u1ea1t y\u00eau c\u1ea7u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Chi\u1ec1u r\u1ed9ng \u0111\u01b0\u1eddng d\u1eabn \u2013 T\u1eeb kh\u1ea3 n\u0103ng ch\u1ecbu d\u00f2ng \u0111i\u1ec7n \u0111\u1ebfn t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/h3>\n\n\n\n<p>Chi\u1ec1u r\u1ed9ng \u0111\u01b0\u1eddng d\u1eabn kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh v\u1ec1 kho\u1ea3ng c\u00e1ch; n\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn kh\u1ea3 n\u0103ng d\u1eabn d\u00f2ng \u0111i\u1ec7n, s\u1ee5t \u00e1p v\u00e0 kh\u1ea3 n\u0103ng duy tr\u00ec tr\u1edf kh\u00e1ng \u0111\u1eb7c tr\u01b0ng. M\u1ed9t nguy\u00ean t\u1eafc chung th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho c\u00e1c \u0111\u01b0\u1eddng d\u1eabn \u0111i\u1ec7n l\u00e0 ti\u00eau chu\u1ea9n IPC-2221, li\u00ean quan \u0111\u1ebfn chi\u1ec1u r\u1ed9ng, \u0111\u1ed9 d\u00e0y \u0111\u1ed3ng v\u00e0 m\u1ee9c t\u0103ng nhi\u1ec7t \u0111\u1ed9. \u0110\u1ed1i v\u1edbi l\u1edbp \u0111\u1ed3ng 1 oz\/ft\u00b2 (\u224835 \u00b5m), d\u00f2ng \u0111i\u1ec7n 10 A th\u01b0\u1eddng y\u00eau c\u1ea7u \u0111\u01b0\u1eddng d\u1eabn r\u1ed9ng kho\u1ea3ng 0,6 mm \u0111\u1ec3 gi\u1eef m\u1ee9c t\u0103ng nhi\u1ec7t \u0111\u1ed9 d\u01b0\u1edbi 10 \u00b0C.<\/p>\n\n\n\n<p>C\u00e1c \u0111\u01b0\u1eddng d\u1eabn t\u00edn hi\u1ec7u, \u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng \u0111\u01b0\u1eddng d\u1eabn truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao, b\u1ecb chi ph\u1ed1i b\u1edfi tr\u1edf kh\u00e1ng nhi\u1ec1u h\u01a1n l\u00e0 d\u00f2ng \u0111i\u1ec7n. Chi\u1ec1u r\u1ed9ng, kho\u1ea3ng c\u00e1ch v\u00e0 \u0111\u1ed9 d\u00e0y l\u1edbp \u0111i\u1ec7n m\u00f4i c\u00f9ng quy\u1ebft \u0111\u1ecbnh tr\u1edf kh\u00e1ng \u0111\u1eb7c tr\u01b0ng c\u1ee7a \u0111\u01b0\u1eddng d\u1eabn (th\u01b0\u1eddng l\u00e0 50 \u03a9 ho\u1eb7c 100 \u03a9 \u0111\u1ed1i x\u1ee9ng). M\u1ed9t v\u00ed d\u1ee5 th\u1ef1c t\u1ebf: tr\u00ean m\u1ed9t ch\u1ea5t n\u1ec1n FR\u20114 ti\u00eau chu\u1ea9n c\u00f3 chi\u1ec1u cao \u0111i\u1ec7n m\u00f4i 0,6\u202fmm, m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn 0,3\u202fmm c\u00e1ch m\u1eb7t ph\u1eb3ng tr\u1edf l\u1ea1i 0,15\u202fmm s\u1ebd cho ra gi\u00e1 tr\u1ecb g\u1ea7n 50\u202f\u03a9. Vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh c\u00e1c k\u00edch th\u01b0\u1edbc n\u00e0y tr\u1edf n\u00ean thi\u1ebft y\u1ebfu khi b\u1ea3ng m\u1ea1ch ph\u1ea3i \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u th\u1eddi gian nghi\u00eam ng\u1eb7t ho\u1eb7c khi thi\u1ebft k\u1ebf bao g\u1ed3m c\u00e1c \u0111\u01b0\u1eddng truy\u1ec1n c\u00f3 tr\u1edf kh\u00e1ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t.<\/p>\n\n\n\n<p>C\u00e1c c\u00f4ng c\u1ee5 thi\u1ebft k\u1ebf hi\u1ec7n nay \u0111\u00e3 t\u1ef1 \u0111\u1ed9ng h\u00f3a ph\u1ea7n l\u1edbn c\u00f4ng vi\u1ec7c n\u00e0y, \u0111\u01b0a ra c\u00e1c \u0111\u1ec1 xu\u1ea5t v\u1ec1 chi\u1ec1u r\u1ed9ng d\u1ef1a tr\u00ean c\u00e1c gi\u1edbi h\u1ea1n do ng\u01b0\u1eddi d\u00f9ng nh\u1eadp v\u00e0o. Tuy nhi\u00ean, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf v\u1eabn n\u00ean ki\u1ec3m tra k\u1ebft qu\u1ea3 \u0111\u1ea7u ra \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c chi\u1ec1u r\u1ed9ng \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t kh\u00f4ng vi ph\u1ea1m c\u00e1c quy t\u1eafc v\u1ec1 kho\u1ea3ng c\u00e1ch ho\u1eb7c g\u00e2y ra t\u00ecnh tr\u1ea1ng t\u1eafc ngh\u1ebdn \u0111\u01b0\u1eddng d\u1eabn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Dung sai gia c\u00f4ng \u2013 \u0110\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m ho\u00e0n thi\u1ec7n \u0111\u00fang nh\u01b0 thi\u1ebft k\u1ebf<\/h3>\n\n\n\n<p>Ngay c\u1ea3 chi\u1ec1u r\u1ed9ng \u0111\u01b0\u1eddng d\u1eabn \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n k\u1ef9 l\u01b0\u1ee1ng nh\u1ea5t c\u0169ng c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng n\u1ebfu nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c dung sai y\u00eau c\u1ea7u. C\u00e1c dung sai ti\u00eau bi\u1ec3u cho chi\u1ec1u r\u1ed9ng v\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng d\u1eabn dao \u0111\u1ed9ng t\u1eeb \u00b110\u202f% \u0111\u1ed1i v\u1edbi c\u00e1c l\u00f4 s\u1ea3n xu\u1ea5t th\u01b0\u01a1ng m\u1ea1i ti\u00eau chu\u1ea9n \u0111\u1ebfn \u00b15\u202f% \u0111\u1ed1i v\u1edbi c\u00e1c m\u1eabu th\u1eed nghi\u1ec7m c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng t\u1ea7n s\u1ed1 cao, c\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd h\u01a1n \u2014 \u0111\u00f4i khi l\u00e0 \u00b12\u202f% \u2014 \u0111\u1ec3 duy tr\u00ec tr\u1edf kh\u00e1ng.<\/p>\n\n\n\n<p>T\u01b0\u01a1ng t\u1ef1, \u0111\u1ed9 d\u00e0y t\u1ed5ng th\u1ec3 c\u1ee7a b\u1ea3ng m\u1ea1ch, \u0111\u1ed9 ch\u00ednh x\u00e1c khi khoan l\u1ed7 v\u00e0 \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 \u0111\u1ed3ng c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t. S\u1ef1 sai l\u1ec7ch ch\u1ec9 v\u00e0i micron trong tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ed3ng c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i \u0111i\u1ec7n tr\u1edf c\u1ee7a m\u1ea1ng ngu\u1ed3n, trong khi c\u00e1c l\u1ed7 vias kh\u00f4ng th\u1eb3ng h\u00e0ng c\u00f3 th\u1ec3 g\u00e2y ra \u0111\u1ed9 t\u1ef1 c\u1ea3m kh\u00f4ng mong mu\u1ed1n. Khi x\u00e1c \u0111\u1ecbnh dung sai, vi\u1ec7c \u01b0u ti\u00ean c\u00e1c th\u00f4ng s\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ec9 s\u1ed1 hi\u1ec7u su\u1ea5t quan tr\u1ecdng nh\u1ea5t l\u00e0 r\u1ea5t h\u1eefu \u00edch. V\u00ed d\u1ee5, m\u1ed9t nh\u00e0 thi\u1ebft k\u1ebf t\u1eadp trung v\u00e0o m\u1ea1ch analog \u00edt nhi\u1ec5u c\u00f3 th\u1ec3 y\u00eau c\u1ea7u dung sai chi\u1ec1u r\u1ed9ng \u0111\u01b0\u1eddng d\u1eabn ch\u1eb7t ch\u1ebd h\u01a1n, trong khi thi\u1ebft k\u1ebf chuy\u1ec3n m\u1ea1ch ngu\u1ed3n c\u00f3 th\u1ec3 nh\u1ea5n m\u1ea1nh v\u00e0o t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ed3ng.<\/p>\n\n\n\n<p>H\u1ea7u h\u1ebft c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t uy t\u00edn \u0111\u1ec1u n\u00eau r\u00f5 kh\u1ea3 n\u0103ng \u0111\u00e1p \u1ee9ng dung sai ti\u00eau chu\u1ea9n trong b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a h\u1ecd. N\u1ebfu thi\u1ebft k\u1ebf v\u01b0\u1ee3t qu\u00e1 c\u00e1c gi\u1edbi h\u1ea1n n\u00e0y, nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 cung c\u1ea5p d\u1ecbch v\u1ee5 \u201cdung sai ch\u1eb7t ch\u1ebd\u201d v\u1edbi m\u1ee9c ph\u00ed b\u1ed5 sung. Vi\u1ec7c li\u00ean h\u1ec7 v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t t\u1eeb s\u1edbm \u2014 b\u1eb1ng c\u00e1ch chia s\u1ebb c\u00e1c t\u1ec7p c\u1ea5u tr\u00fac l\u1edbp v\u00e0 y\u00eau c\u1ea7u v\u1ec1 dung sai \u2014 s\u1ebd gi\u00fap tr\u00e1nh \u0111\u01b0\u1ee3c nh\u1eefng l\u1ea7n thi\u1ebft k\u1ebf l\u1ea1i t\u1ed1n k\u00e9m \u1edf c\u00e1c giai \u0111o\u1ea1n sau c\u1ee7a quy tr\u00ecnh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Nh\u1eefng l\u1eddi khuy\u00ean thi\u1ebft th\u1ef1c \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh c\u00e1c y\u00eau c\u1ea7u cho ph\u00f9 h\u1ee3p v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>H\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi m\u1ed9t b\u1ea3n thi\u1ebft k\u1ebf m\u1eb7t b\u1eb1ng th\u1ef1c t\u1ebf.<\/strong> D\u1ef1a v\u00e0o t\u1ea7n s\u1ed1 v\u00e0 nhu c\u1ea7u c\u00f4ng su\u1ea5t c\u1ee7a d\u1ef1 \u00e1n \u0111\u1ec3 ch\u1ecdn m\u1ed9t c\u1ea5u h\u00ecnh c\u01a1 s\u1edf, sau \u0111\u00f3 ch\u1ec9 ti\u1ebfn h\u00e0nh \u0111i\u1ec1u ch\u1ec9nh n\u1ebfu c\u00e1c m\u00f4 ph\u1ecfng cho th\u1ea5y c\u00f3 v\u1ea5n \u0111\u1ec1.<\/li>\n\n\n\n<li><strong>\u00c1p d\u1ee5ng c\u00e1c h\u01b0\u1edbng d\u1eabn c\u1ee7a IPC.<\/strong> \u00c1p d\u1ee5ng ti\u00eau chu\u1ea9n IPC\u20112221 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1eddng d\u1eabn ngu\u1ed3n v\u00e0 ti\u00eau chu\u1ea9n IPC\u20112141 \u0111\u1ec3 t\u00ednh to\u00e1n tr\u1edf kh\u00e1ng \u0111\u01b0\u1eddng d\u1eabn t\u1ed1c \u0111\u1ed9 cao nh\u1eb1m thi\u1ebft l\u1eadp c\u00e1c m\u1ee5c ti\u00eau chi\u1ec1u r\u1ed9ng h\u1ee3p l\u00fd.<\/li>\n\n\n\n<li><strong>X\u00e1c \u0111\u1ecbnh th\u1ee9 t\u1ef1 \u01b0u ti\u00ean v\u1ec1 dung sai.<\/strong> H\u00e3y n\u00eau r\u00f5 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00e0o (chi\u1ec1u r\u1ed9ng \u0111\u01b0\u1eddng m\u1ea1ch, kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng m\u1ea1ch, \u0111\u1ed9 d\u00e0y \u0111\u1ed3ng) c\u1ea7n \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd h\u01a1n, v\u00e0 th\u00f4ng b\u00e1o nh\u1eefng y\u00eau c\u1ea7u n\u00e0y cho nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t.<\/li>\n\n\n\n<li><strong>L\u00e0m m\u1eabu th\u1eed tr\u01b0\u1edbc khi s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t.<\/strong> M\u1ed9t l\u00f4 nh\u1ecf c\u00e1c b\u1ea3ng m\u1ea1ch nguy\u00ean m\u1eabu c\u00f3 th\u1ec3 cho bi\u1ebft li\u1ec7u c\u00e1c dung sai \u0111\u00e3 ch\u1ecdn c\u00f3 \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c trong \u0111i\u1ec1u ki\u1ec7n s\u1ea3n xu\u1ea5t th\u1ef1c t\u1ebf hay kh\u00f4ng.<\/li>\n\n\n\n<li><strong>Li\u00ean h\u1ec7 th\u01b0\u1eddng xuy\u00ean v\u1edbi nh\u00e0 cung c\u1ea5p.<\/strong> Y\u00eau c\u1ea7u b\u1ea3n b\u00e1o c\u00e1o x\u00e1c nh\u1eadn nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t (fab-validation report) \u0111\u1ec3 x\u00e1c nh\u1eadn r\u1eb1ng bo m\u1ea1ch \u0111\u00e1p \u1ee9ng c\u00e1c dung sai quy \u0111\u1ecbnh, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi c\u00e1c thi\u1ebft k\u1ebf t\u1ea7n s\u1ed1 cao ho\u1eb7c d\u00f2ng \u0111i\u1ec7n cao.<\/li>\n<\/ul>\n\n\n\n<p>B\u1eb1ng c\u00e1ch ph\u00e2n t\u00edch k\u1ef9 l\u01b0\u1ee1ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 c\u00f4ng su\u1ea5t, t\u00edn hi\u1ec7u v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh s\u1ed1 l\u1edbp, h\u00ecnh d\u1ea1ng \u0111\u01b0\u1eddng d\u1eabn v\u00e0 dung sai gia c\u00f4ng, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf \u0111\u00e3 t\u1ea1o ra m\u1ed9t n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc cho vi\u1ec7c s\u1ea3n xu\u1ea5t c\u00e1c b\u1ea3ng m\u1ea1ch in (PCB) \u0111\u00e1ng tin c\u1eady v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed. Ph\u1ea7n ti\u1ebfp theo s\u1ebd d\u1ef1a tr\u00ean n\u1ec1n t\u1ea3ng n\u00e0y \u0111\u1ec3 t\u00ecm hi\u1ec3u c\u00e1ch th\u1ee9c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n v\u00e0 \u0111\u1ed9 d\u00e0y \u0111\u1ed3ng ti\u1ebfp t\u1ee5c t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady v\u00e0 t\u1ed5ng chi ph\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u1ef1a ch\u1ecdn ch\u1ea5t n\u1ec1n v\u00e0 \u0111\u1ed9 d\u00e0y \u0111\u1ed3ng ph\u00f9 h\u1ee3p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u qu\u1ea3 chi ph\u00ed<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/eageycejtjewikfgmnzy.supabase.co\/storage\/v1\/object\/public\/article\/81bbc959-d0a3-4da2-b4b5-0b99a934a98c\/a382d29d-6497-4f33-a538-cadf6f6a5bbc.png\" alt=\"Choosing the Right Substrate and Copper Weight for\"\/><\/figure>\n\n\n\n<p>Khi cu\u1ed9c th\u1ea3o lu\u1eadn tr\u01b0\u1edbc \u0111\u00f3 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn s\u1ed1 l\u1edbp v\u00e0 \u0111\u1ed9 r\u1ed9ng \u0111\u01b0\u1eddng d\u1eabn, c\u00e2u h\u1ecfi ti\u1ebfp theo t\u1ea5t y\u1ebfu l\u00e0 v\u1eadt li\u1ec7u n\u00e0o n\u1eb1m d\u01b0\u1edbi c\u00e1c \u0111\u01b0\u1eddng d\u1eabn \u0111\u00f3 s\u1ebd gi\u00fap bo m\u1ea1ch \u1ed5n \u0111\u1ecbnh m\u00e0 kh\u00f4ng l\u00e0m t\u0103ng chi ph\u00ed. Ch\u1ea5t n\u1ec1n \u2014 th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ch\u1ea5t \u0111i\u1ec7n m\u00f4i \u2014 cung c\u1ea5p kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 c\u01a1 h\u1ecdc, c\u00e1ch ly \u0111i\u1ec7n v\u00e0 qu\u1ea3n l\u00fd nhi\u1ec7t. Tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ed3ng, \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng ounce tr\u00ean m\u1ed7i foot vu\u00f4ng, quy\u1ebft \u0111\u1ecbnh l\u01b0\u1ee3ng d\u00f2ng \u0111i\u1ec7n m\u00e0 m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn c\u00f3 th\u1ec3 ch\u1ecbu t\u1ea3i v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng s\u1ef1 dao \u0111\u1ed9ng nhi\u1ec7t \u0111\u1ed9 c\u1ee7a bo m\u1ea1ch. C\u1ea3 hai y\u1ebfu t\u1ed1 n\u00e0y c\u00f9ng nhau t\u1ea1o n\u00ean n\u1ec1n t\u1ea3ng cho \u0111\u1ed9 tin c\u1eady v\u00e0 chi ph\u00ed.<\/p>\n\n\n\n<p><strong>Ch\u1ee9c n\u0103ng c\u1ee7a ch\u1ea5t n\u1ec1n l\u00e0 g\u00ec<\/strong> H\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i (Dk) c\u1ee7a ch\u1ea5t n\u1ec1n \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u00edn hi\u1ec7u, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi c\u00e1c thi\u1ebft k\u1ebf k\u1ef9 thu\u1eadt s\u1ed1 t\u1ea7n s\u1ed1 cao ho\u1eb7c t\u1ed1c \u0111\u1ed9 cao. C\u00e1c v\u1eadt li\u1ec7u c\u00f3 Dk th\u1ea5p nh\u01b0 PTFE (Teflon) ho\u1eb7c c\u00e1c lo\u1ea1i laminate hydrocacbon chuy\u00ean d\u1ee5ng gi\u00fap gi\u1ea3m thi\u1ec3u t\u1ed5n th\u1ea5t t\u00edn hi\u1ec7u, nh\u01b0ng gi\u00e1 th\u00e0nh c\u1ee7a ch\u00fang l\u1ea1i kh\u00e1 cao. \u0110\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c d\u1ef1 \u00e1n c\u1ee7a ng\u01b0\u1eddi \u0111am m\u00ea ho\u1eb7c c\u00e1c d\u1ef1 \u00e1n t\u1ed1c \u0111\u1ed9 trung b\u00ecnh, t\u1ea5m laminate FR-4 ti\u00eau chu\u1ea9n \u2014 epoxy gia c\u1ed1 b\u1eb1ng th\u1ee7y tinh \u2014 mang l\u1ea1i s\u1ef1 c\u00e2n b\u1eb1ng t\u1ed1t: Dk kho\u1ea3ng 4,5, kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t ph\u00f9 h\u1ee3p v\u00e0 d\u1ec5 t\u00ecm mua v\u1edbi chi ph\u00ed th\u1ea5p.<\/p>\n\n\n\n<p><strong>Khi n\u00e0o n\u00ean xem x\u00e9t c\u00e1c ph\u01b0\u01a1ng \u00e1n thay th\u1ebf<\/strong> N\u1ebfu thi\u1ebft k\u1ebf ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ea7n s\u1ed1 tr\u00ean v\u00e0i tr\u0103m megahertz, ho\u1eb7c n\u1ebfu b\u1ea3ng m\u1ea1ch ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t (\u0111\u1ed9 \u1ea9m cao, h\u00f3a ch\u1ea5t ho\u1eb7c nhi\u1ec7t \u0111\u1ed9 c\u1ef1c \u0111oan), vi\u1ec7c s\u1eed d\u1ee5ng ch\u1ea5t n\u1ec1n cao c\u1ea5p h\u01a1n s\u1ebd mang l\u1ea1i l\u1ee3i \u00edch \u0111\u00e1ng k\u1ec3. C\u00e1c v\u1eadt li\u1ec7u nh\u01b0 d\u00f2ng Rogers RO4000 ho\u1eb7c polyimide cung c\u1ea5p \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t v\u01b0\u1ee3t tr\u1ed9i v\u00e0 t\u1ed5n th\u1ea5t th\u1ea5p h\u01a1n, nh\u01b0ng ch\u00fang c\u0169ng l\u00e0m t\u0103ng chi ph\u00ed tr\u00ean m\u1ed7i inch vu\u00f4ng l\u00ean 30\u201350\u202f% so v\u1edbi FR-4. M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn l\u00e0 d\u00e0nh c\u00e1c lo\u1ea1i laminate cao c\u1ea5p n\u00e0y cho c\u00e1c l\u1edbp quan tr\u1ecdng\u2014ch\u1eb3ng h\u1ea1n nh\u01b0 l\u1edbp t\u00edn hi\u1ec7u mang c\u00e1c c\u1ea1nh nhanh nh\u1ea5t\u2014trong khi gi\u1eef c\u00e1c l\u1edbp c\u00f2n l\u1ea1i tr\u00ean FR-4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ed3ng: c\u00e2n b\u1eb1ng gi\u1eefa c\u00f4ng su\u1ea5t d\u00f2ng \u0111i\u1ec7n v\u00e0 chi ph\u00ed<\/h3>\n\n\n\n<p>Tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ed3ng \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111i\u1ec7n tr\u1edf c\u1ee7a \u0111\u01b0\u1eddng d\u1eabn. Theo kinh nghi\u1ec7m, m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ed3ng c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng 1 oz\/ft\u00b2 (d\u00e0y 35 \u00b5m) c\u00f3 th\u1ec3 d\u1eabn an to\u00e0n kho\u1ea3ng 0,5 A tr\u00ean m\u1ed7i mil chi\u1ec1u r\u1ed9ng \u1edf nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng th\u00f4ng th\u01b0\u1eddng. T\u0103ng g\u1ea5p \u0111\u00f4i l\u01b0\u1ee3ng \u0111\u1ed3ng l\u00ean 2 oz s\u1ebd l\u00e0m gi\u1ea3m \u0111i\u1ec7n tr\u1edf kho\u1ea3ng m\u1ed9t n\u1eeda, cho ph\u00e9p s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng d\u1eabn h\u1eb9p h\u01a1n cho c\u00f9ng m\u1ed9t d\u00f2ng \u0111i\u1ec7n, nh\u01b0ng chi ph\u00ed s\u1ebd t\u0103ng t\u01b0\u01a1ng \u1ee9ng v\u00ec l\u00e1 \u0111\u1ed3ng d\u00e0y h\u01a1n v\u00e0 qu\u00e1 tr\u00ecnh \u0103n m\u00f2n tr\u1edf n\u00ean ch\u1eadm h\u01a1n.<\/p>\n\n\n\n<p><strong>H\u01b0\u1edbng d\u1eabn th\u1ef1c h\u00e0nh<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>B\u1ea3ng m\u1ea1ch ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p (&lt;1 A t\u1ed5ng c\u1ed9ng)<\/strong> \u2013 Th\u00f4ng th\u01b0\u1eddng, 1 oz \u0111\u1ed3ng l\u00e0 \u0111\u1ee7. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea3ng m\u1ea1ch m\u1ecfng h\u01a1n, gi\u1ea3m thi\u1ec3u l\u00e3ng ph\u00ed v\u1eadt li\u1ec7u v\u00e0 gi\u1eef gi\u00e1 th\u00e0nh \u1edf m\u1ee9c th\u1ea5p.<\/li>\n\n\n\n<li><strong>M\u1ea1ng l\u01b0\u1edbi ph\u00e2n ph\u1ed1i \u0111i\u1ec7n ho\u1eb7c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1<\/strong> \u2013 2 oz \u0111\u1ed3ng l\u00e0 l\u1ef1a ch\u1ecdn an to\u00e0n, \u0111\u1eb7c bi\u1ec7t khi c\u00e1c \u0111\u01b0\u1eddng m\u1ea1ch ph\u1ea3i c\u1ea5p ngu\u1ed3n cho c\u00e1c b\u1ed9 \u0111i\u1ec1u ch\u1ec9nh ho\u1eb7c \u0111\u1ea7u n\u1ed1i ch\u1ecbu d\u00f2ng \u0111i\u1ec7n v\u00e0i ampe.<\/li>\n\n\n\n<li><strong>C\u00e1c \u0111o\u1ea1n c\u00f3 d\u00f2ng \u0111i\u1ec7n cao ho\u1eb7c nh\u1ea1y c\u1ea3m v\u1edbi nhi\u1ec7t<\/strong> \u2013 H\u00e3y xem x\u00e9t c\u00e1c c\u1ee5m linh ki\u1ec7n \u201cheavy-copper\u201d c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng 3 oz ho\u1eb7c ch\u1ee9a nhi\u1ec1u \u0111\u1ed3ng. Lo\u1ea1i linh ki\u1ec7n n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u00e8n LED ho\u1eb7c b\u1ea3ng m\u1ea1ch qu\u1ea3n l\u00fd pin, n\u01a1i vi\u1ec7c t\u1ea3n nhi\u1ec7t l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 quan tr\u1ecdng.<\/li>\n<\/ul>\n\n\n\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn l\u1edbp \u0111\u1ed3ng d\u00e0y h\u01a1n c\u0169ng gi\u00fap c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng t\u1ea3n nhi\u1ec7t c\u1ee7a b\u1ea3ng m\u1ea1ch, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 r\u1ea5t quan tr\u1ecdng khi c\u00e1c linh ki\u1ec7n t\u1ea1o ra c\u00e1c \u0111i\u1ec3m n\u00f3ng c\u1ee5c b\u1ed9. Tuy nhi\u00ean, l\u1edbp \u0111\u1ed3ng d\u00e0y h\u01a1n s\u1ebd khi\u1ebfn vi\u1ec7c khoan c\u00e1c l\u1ed7 vias nh\u1ecf h\u01a1n tr\u1edf n\u00ean kh\u00f3 kh\u0103n h\u01a1n, t\u1eeb \u0111\u00f3 c\u00f3 th\u1ec3 l\u00e0m t\u0103ng chi ph\u00ed s\u1ea3n xu\u1ea5t ho\u1eb7c h\u1ea1n ch\u1ebf k\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u c\u1ee7a l\u1ed7 vias.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i v\u00e0 t\u00e1c \u0111\u1ed9ng v\u1ec1 chi ph\u00ed<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><\/td><td><\/td><td>T\u00f9y ch\u1ecdn nh\u1eb9 (1 oz, FR-4) T\u00f9y ch\u1ecdn n\u1eb7ng (2 oz tr\u1edf l\u00ean ho\u1eb7c ch\u1ea5t n\u1ec1n cao c\u1ea5p)<\/td><\/tr><tr><td><strong>Chi ph\u00ed nguy\u00ean v\u1eadt li\u1ec7u ban \u0111\u1ea7u<\/strong><\/td><td>Th\u1ea5p<\/td><td>Trung b\u00ecnh \u0111\u1ebfn cao<\/td><\/tr><tr><td><strong>\u0110\u1ed9 ph\u1ee9c t\u1ea1p trong s\u1ea3n xu\u1ea5t<\/strong><\/td><td>G\u1ecdt kh\u1eafc \u0111\u01a1n gi\u1ea3n, nhanh ch\u00f3ng<\/td><td>Qu\u00e1 tr\u00ecnh \u0103n m\u00f2n ch\u1eadm h\u01a1n, dung sai khoan ch\u1eb7t ch\u1ebd h\u01a1n<\/td><\/tr><tr><td><strong>C\u00f4ng su\u1ea5t hi\u1ec7n t\u1ea1i<\/strong><\/td><td>H\u1ea1n ch\u1ebf; c\u1ea7n c\u00e1c \u0111\u01b0\u1eddng d\u1eabn r\u1ed9ng h\u01a1n<\/td><td>C\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c c\u00e1c \u0111\u01b0\u1eddng v\u1ea1ch cao h\u01a1n v\u00e0 h\u1eb9p h\u01a1n<\/td><\/tr><tr><td><strong>Hi\u1ec7u su\u1ea5t nhi\u1ec7t<\/strong><\/td><td>Ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c thi\u1ebft k\u1ebf ho\u1ea1t \u0111\u1ed9ng \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p<\/td><td>T\u1ea3n nhi\u1ec7t t\u1ed1t h\u01a1n, nhi\u1ec7t \u0111\u1ed9 t\u0103ng th\u1ea5p h\u01a1n<\/td><\/tr><tr><td><strong>T\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u \u1edf t\u1ed1c \u0111\u1ed9 cao<\/strong><\/td><td>\u0110\u1ee7 cho t\u1ea7n s\u1ed1 d\u01b0\u1edbi 500 MHz<\/td><td>Hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i \u1edf t\u1ea7n s\u1ed1 tr\u00ean 1 GHz, t\u1ed5n th\u1ea5t th\u1ea5p h\u01a1n<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>M\u1ed9t sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p l\u00e0 quy \u0111\u1ecbnh tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ed3ng qu\u00e1 cao nh\u1eb1m thu h\u1eb9p chi\u1ec1u r\u1ed9ng \u0111\u01b0\u1eddng m\u1ea1ch, ch\u1ec9 \u0111\u1ec3 r\u1ed3i ph\u00e1t hi\u1ec7n ra r\u1eb1ng nh\u00e0 s\u1ea3n xu\u1ea5t b\u1ea3ng m\u1ea1ch t\u00ednh th\u00eam ph\u00ed cho c\u00e1c dung sai ch\u1eb7t ch\u1ebd h\u01a1n v\u00e0 l\u1ee3i th\u1ebf v\u1ec1 chi ph\u00ed c\u0169ng bi\u1ebfn m\u1ea5t. Tr\u00ean th\u1ef1c t\u1ebf, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf th\u01b0\u1eddng t\u00ecm \u0111\u01b0\u1ee3c \u0111i\u1ec3m c\u00e2n b\u1eb1ng l\u00fd t\u01b0\u1edfng b\u1eb1ng c\u00e1ch t\u0103ng nh\u1eb9 l\u01b0\u1ee3ng \u0111\u1ed3ng (l\u00ean 1,5 oz n\u1ebfu nh\u00e0 s\u1ea3n xu\u1ea5t cung c\u1ea5p t\u00f9y ch\u1ecdn n\u00e0y) v\u00e0 duy tr\u00ec b\u1ed1 c\u1ee5c hi\u1ec7u qu\u1ea3, thay v\u00ec v\u1ed9i v\u00e0ng t\u0103ng l\u00ean 2 oz ho\u1eb7c h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Danh s\u00e1ch ki\u1ec3m tra cho qu\u00e1 tr\u00ecnh ra quy\u1ebft \u0111\u1ecbnh<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>X\u00e1c \u0111\u1ecbnh d\u00f2ng \u0111i\u1ec7n t\u1ed1i \u0111a cho m\u1ed7i l\u01b0\u1edbi<\/strong> \u2013 t\u00ednh to\u00e1n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng b\u1ea3ng IPC\u20112221 ho\u1eb7c c\u00f4ng c\u1ee5 t\u00ednh chi\u1ec1u r\u1ed9ng \u0111\u01b0\u1eddng d\u1eabn tr\u1ef1c tuy\u1ebfn.<\/li>\n\n\n\n<li><strong>X\u00e1c \u0111\u1ecbnh c\u00e1c t\u00edn hi\u1ec7u t\u1ea7n s\u1ed1 cao<\/strong> \u2013 n\u1ebfu b\u1ea5t k\u1ef3 \u0111\u01b0\u1eddng d\u1eabn n\u00e0o v\u01b0\u1ee3t qu\u00e1 v\u00e0i tr\u0103m megahertz, h\u00e3y \u01b0u ti\u00ean s\u1eed d\u1ee5ng ch\u1ea5t n\u1ec1n c\u00f3 \u0111\u1ed9 suy hao th\u1ea5p cho l\u1edbp \u0111\u00f3.<\/li>\n\n\n\n<li><strong>Xem x\u00e9t \u1ee9ng su\u1ea5t c\u01a1 h\u1ecdc<\/strong> \u2013 C\u00e1c b\u1ea3ng m\u1ea1ch s\u1ebd b\u1ecb u\u1ed1n cong ho\u1eb7c l\u1eafp \u0111\u1eb7t trong c\u00e1c khoang k\u00edn n\u00ean s\u1eed d\u1ee5ng lo\u1ea1i FR-4 c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha th\u1ee7y tinh (Tg) cao h\u01a1n.<\/li>\n\n\n\n<li><strong>Ki\u1ec3m tra kh\u1ea3 n\u0103ng c\u1ee7a nh\u00e0 m\u00e1y<\/strong> \u2013 Nhi\u1ec1u nh\u00e0 s\u1ea3n xu\u1ea5t thu\u1ed9c ph\u00e2n kh\u00fac t\u1ea7m trung th\u01b0\u1eddng cung c\u1ea5p ti\u00eau chu\u1ea9n l\u00e0 t\u1ea5m FR-4 1 oz, k\u00e8m theo t\u00f9y ch\u1ecdn 2 oz v\u00e0 m\u1ed9t s\u1ed1 lo\u1ea1i t\u1ea5m cao c\u1ea5p h\u1ea1n ch\u1ebf. H\u00e3y \u0111i\u1ec1u ch\u1ec9nh thi\u1ebft k\u1ebf sao cho ph\u00f9 h\u1ee3p v\u1edbi nh\u1eefng g\u00ec nh\u00e0 m\u00e1y c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t m\u00e0 kh\u00f4ng c\u1ea7n d\u1ee5ng c\u1ee5 gia c\u00f4ng \u0111\u1eb7c bi\u1ec7t.<\/li>\n\n\n\n<li><strong>H\u1ea1n ch\u1ebf v\u1ec1 ng\u00e2n s\u00e1ch<\/strong> \u2013 Ch\u1ec9 n\u00ean chi th\u00eam chi ph\u00ed khi th\u1ef1c s\u1ef1 mang l\u1ea1i l\u1ee3i \u00edch v\u1ec1 \u0111\u1ed9 tin c\u1eady ho\u1eb7c hi\u1ec7u su\u1ea5t; n\u1ebfu kh\u00f4ng, h\u00e3y gi\u1eef nguy\u00ean c\u1ea5u tr\u00fac m\u1eb7c \u0111\u1ecbnh.<\/li>\n<\/ul>\n\n\n\n<p>B\u1eb1ng c\u00e1ch tu\u00e2n theo quy tr\u00ecnh n\u00e0y, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf ch\u1ec9 n\u00ean l\u1ef1a ch\u1ecdn ch\u1ea5t n\u1ec1n ho\u1eb7c l\u01b0\u1ee3ng \u0111\u1ed3ng c\u00f3 chi ph\u00ed cao h\u01a1n khi nh\u1eefng l\u1ee3i \u00edch v\u1ec1 hi\u1ec7u su\u1ea5t ho\u1eb7c \u0111\u1ed9 tin c\u1eady v\u01b0\u1ee3t tr\u1ed9i h\u01a1n so v\u1edbi chi ph\u00ed ph\u00e1t sinh. B\u01b0\u1edbc ti\u1ebfp theo s\u1ebd ph\u00e2n t\u00edch c\u00e1ch m\u1eadt \u0111\u1ed9 linh ki\u1ec7n v\u00e0 v\u1ecb tr\u00ed b\u1ed1 tr\u00ed t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u00e0y \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c m\u1ee5c ti\u00eau hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0110\u00e1nh gi\u00e1 m\u1eadt \u0111\u1ed9 linh ki\u1ec7n v\u00e0 c\u00e1c chi\u1ebfn l\u01b0\u1ee3c b\u1ed1 tr\u00ed \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c m\u1ee5c ti\u00eau hi\u1ec7u su\u1ea5t<\/h2>\n\n\n\n<p>Ti\u1ebfp n\u1ed1i ph\u1ea7n th\u1ea3o lu\u1eadn v\u1ec1 ch\u1ea5t n\u1ec1n v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ed3ng, c\u00e1ch b\u1ed1 tr\u00ed v\u00e0 s\u1eafp x\u1ebfp c\u00e1c linh ki\u1ec7n tr\u00ean b\u1ea3ng m\u1ea1ch tr\u1edf th\u00e0nh y\u1ebfu t\u1ed1 then ch\u1ed1t ti\u1ebfp theo \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t \u0111i\u1ec7n nh\u01b0 mong mu\u1ed1n. B\u1ed1 c\u1ee5c m\u1eadt \u0111\u1ed9 cao c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m k\u00edch th\u01b0\u1edbc b\u1ea3ng m\u1ea1ch v\u00e0 chi ph\u00ed v\u1eadt li\u1ec7u, song song \u0111\u00f3 c\u0169ng g\u00e2y ra nh\u1eefng th\u00e1ch th\u1ee9c nh\u01b0 t\u0103ng \u0111i\u1ec7n dung k\u00fd sinh, nhi\u1ec5u t\u00edn hi\u1ec7u ch\u00e9o v\u00e0 t\u1eafc ngh\u1ebdn nhi\u1ec7t. Hi\u1ec3u r\u00f5 nh\u1eefng s\u1ef1 c\u00e2n b\u1eb1ng n\u00e0y s\u1ebd gi\u00fap c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf l\u1ef1a ch\u1ecdn chi\u1ebfn l\u01b0\u1ee3c b\u1ed1 tr\u00ed ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c m\u1ee5c ti\u00eau v\u1ec1 t\u1ed1c \u0111\u1ed9, c\u00f4ng su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a d\u1ef1 \u00e1n.<\/p>\n\n\n\n<p><strong>M\u1eadt \u0111\u1ed9 linh ki\u1ec7n<\/strong> th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng s\u1ed1 l\u01b0\u1ee3ng linh ki\u1ec7n tr\u00ean m\u1ed9t \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch (v\u00ed d\u1ee5: s\u1ed1 linh ki\u1ec7n tr\u00ean m\u1ed7i inch vu\u00f4ng). S\u1ef1 b\u1ed1 tr\u00ed d\u00e0y \u0111\u1eb7c r\u1ea5t h\u1ea5p d\u1eabn \u0111\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb c\u1ea7m tay, thi\u1ebft b\u1ecb \u0111eo \u0111\u01b0\u1ee3c ho\u1eb7c b\u1ea5t k\u1ef3 s\u1ea3n ph\u1ea9m n\u00e0o m\u00e0 di\u1ec7n t\u00edch b\u1ea3ng m\u1ea1ch l\u00e0 r\u1ea5t qu\u00fd gi\u00e1. Tuy nhi\u00ean, khi kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng d\u1eabn thu h\u1eb9p l\u1ea1i, s\u1ef1 gh\u00e9p n\u1ed1i c\u1ea3m \u1ee9ng v\u00e0 \u0111i\u1ec7n dung gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng t\u00edn hi\u1ec7u li\u1ec1n k\u1ec1 s\u1ebd t\u0103ng l\u00ean. Trong th\u1ef1c t\u1ebf, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0m suy gi\u1ea3m t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u t\u1ea7n s\u1ed1 cao, g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng dao \u0111\u1ed9ng th\u1eddi gian ho\u1eb7c th\u1eadm ch\u00ed k\u00edch ho\u1ea1t c\u00e1c dao \u0111\u1ed9ng kh\u00f4ng mong mu\u1ed1n trong c\u00e1c m\u1ea1ch t\u01b0\u01a1ng t\u1ef1.<\/p>\n\n\n\n<p>M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn \u0111\u1ec3 gi\u1ea3m thi\u1ec3u nh\u1eefng t\u00e1c \u0111\u1ed9ng n\u00e0y l\u00e0 ph\u00e2n nh\u00f3m c\u00e1c linh ki\u1ec7n theo ch\u1ee9c n\u0103ng v\u00e0 d\u1ea3i t\u1ea7n s\u1ed1. V\u00ed d\u1ee5, vi\u1ec7c \u0111\u1eb7t t\u1ea5t c\u1ea3 c\u00e1c m\u1ea1ch t\u00edch h\u1ee3p k\u1ef9 thu\u1eadt s\u1ed1 t\u1ed1c \u0111\u1ed9 cao l\u1ea1i g\u1ea7n nhau, \u0111\u1ed3ng th\u1eddi c\u00e1ch ly c\u00e1c linh ki\u1ec7n chuy\u1ec3n m\u1ea1ch ngu\u1ed3n g\u00e2y nhi\u1ec5u kh\u1ecfi c\u00e1c kh\u1ed1i m\u1ea1ch t\u01b0\u01a1ng t\u1ef1 nh\u1ea1y c\u1ea3m, s\u1ebd gi\u00fap gi\u1ea3m thi\u1ec3u kh\u1ea3 n\u0103ng x\u1ea3y ra nhi\u1ec5u ch\u00e9o. Ngo\u00e0i ra, vi\u1ec7c b\u1ed1 tr\u00ed c\u00e1c \u0111\u01b0\u1eddng d\u1eabn t\u1ea7n s\u1ed1 cao quan tr\u1ecdng tr\u00ean c\u00e1c l\u1edbp b\u00ean trong c\u00f9ng v\u1edbi c\u00e1c m\u1eb7t \u0111\u1ea5t chuy\u00ean d\u1ee5ng s\u1ebd t\u1ea1o ra m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn h\u1ed3i \u1ed5n \u0111\u1ecbnh v\u00e0 h\u1ea1n ch\u1ebf s\u1ef1 ph\u00e1t x\u1ea1 \u0111i\u1ec7n t\u1eeb.<\/p>\n\n\n\n<p>Khi m\u1eadt \u0111\u1ed9 tr\u1edf th\u00e0nh m\u1ed9t y\u1ebfu t\u1ed1 h\u1ea1n ch\u1ebf, <strong>thi\u1ebft k\u1ebf x\u1ebfp ch\u1ed3ng<\/strong> mang l\u1ea1i m\u1ed9t gi\u1ea3i ph\u00e1p h\u1eefu \u00edch. B\u1eb1ng c\u00e1ch th\u00eam c\u00e1c l\u1edbp \u0111i\u1ec7n m\u00f4i b\u1ed5 sung, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 b\u1ed1 tr\u00ed c\u00e1c nh\u00f3m t\u00edn hi\u1ec7u c\u1ee5 th\u1ec3 tr\u00ean c\u00e1c l\u1edbp ri\u00eang bi\u1ec7t, t\u1eeb \u0111\u00f3 t\u00e1ch bi\u1ec7t ch\u00fang m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 m\u00e0 kh\u00f4ng l\u00e0m t\u0103ng di\u1ec7n t\u00edch b\u1ea3ng m\u1ea1ch. K\u1ef9 thu\u1eadt n\u00e0y c\u0169ng cho ph\u00e9p s\u1eed d\u1ee5ng chi\u1ec1u r\u1ed9ng \u0111\u01b0\u1eddng d\u1eabn h\u1eb9p h\u01a1n v\u00ec \u0111\u1ed9 d\u00e0y l\u1edbp \u0111i\u1ec7n m\u00f4i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3m b\u1edbt \u1edf c\u00e1c l\u1edbp b\u00ean trong, gi\u00fap h\u1ea1 th\u1ea5p tr\u1edf kh\u00e1ng c\u1ee7a c\u00e1c \u0111\u01b0\u1eddng d\u1eabn c\u00f3 tr\u1edf kh\u00e1ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t. \u0110\u1ed5i l\u1ea1i, \u0111i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn vi\u1ec7c t\u0103ng chi ph\u00ed s\u1ea3n xu\u1ea5t v\u00e0 qu\u00e1 tr\u00ecnh \u0111\u00e1nh gi\u00e1 DFM (thi\u1ebft k\u1ebf h\u01b0\u1edbng t\u1edbi kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t) tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p h\u01a1n.<\/p>\n\n\n\n<p>C\u00e1c y\u1ebfu t\u1ed1 nhi\u1ec7t l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh kh\u00e1c. C\u00e1c m\u00f4-\u0111un c\u00f3 m\u1eadt \u0111\u1ed9 c\u00f4ng su\u1ea5t cao nh\u01b0 b\u1ed9 \u0111i\u1ec1u ch\u1ec9nh \u0111i\u1ec7n \u00e1p, b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1 ho\u1eb7c b\u1ed9 khu\u1ebfch \u0111\u1ea1i c\u00f4ng su\u1ea5t RF t\u1ea1o ra l\u01b0\u1ee3ng nhi\u1ec7t \u0111\u00e1ng k\u1ec3. N\u1ebfu \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed qu\u00e1 g\u1ea7n nhau, s\u1ef1 t\u00edch t\u1ee5 nhi\u1ec7t c\u00f3 th\u1ec3 l\u00e0m nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3m n\u1ed1i v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n \u0111\u1ecbnh m\u1ee9c c\u1ee7a linh ki\u1ec7n, d\u1eabn \u0111\u1ebfn h\u1ecfng h\u00f3c s\u1edbm. M\u1ed9t nguy\u00ean t\u1eafc th\u1ef1c ti\u1ec5n l\u00e0 gi\u1eef kho\u1ea3ng c\u00e1ch \u00edt nh\u1ea5t t\u1eeb m\u1ed9t \u0111\u1ebfn hai milim\u00e9t gi\u1eefa c\u00e1c linh ki\u1ec7n c\u00f4ng su\u1ea5t cao v\u00e0 b\u1ed1 tr\u00ed c\u00e1c t\u1ea5m t\u1ea3n nhi\u1ec7t b\u1eb1ng \u0111\u1ed3ng ho\u1eb7c c\u00e1c l\u1ed7 d\u1eabn nhi\u1ec7t b\u00ean d\u01b0\u1edbi ch\u00fang. Trong th\u1ef1c t\u1ebf, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf th\u01b0\u1eddng s\u1eed d\u1ee5ng \u201cc\u00e1c \u0111\u1ea3o nhi\u1ec7t\u201d \u2013 c\u00e1c l\u1edbp \u0111\u1ed3ng chuy\u00ean d\u1ee5ng k\u1ebft n\u1ed1i v\u1edbi c\u00e1c m\u1eb7t ph\u1eb3ng b\u00ean trong b\u1ea3ng m\u1ea1ch \u2013 \u0111\u1ec3 t\u1ea3n nhi\u1ec7t ra kh\u1ecfi c\u00e1c \u0111i\u1ec3m n\u00f3ng.<\/p>\n\n\n\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 danh s\u00e1ch ki\u1ec3m tra gi\u00fap c\u00e2n b\u1eb1ng gi\u1eefa m\u1eadt \u0111\u1ed9 v\u00e0 hi\u1ec7u su\u1ea5t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ph\u00e2n c\u1ee5m theo ch\u1ee9c n\u0103ng:<\/strong> H\u00e3y nh\u00f3m c\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 t\u1ed1c \u0111\u1ed9 ho\u1eb7c \u0111\u1ed9 nh\u1ea1y t\u01b0\u01a1ng t\u1ef1 l\u1ea1i v\u1edbi nhau.<\/li>\n\n\n\n<li><strong>Ph\u00e2n c\u00f4ng l\u1edbp:<\/strong> D\u00e0nh c\u00e1c l\u1edbp b\u00ean trong cho c\u00e1c \u0111\u01b0\u1eddng d\u1eabn t\u1ed1c \u0111\u1ed9 cao quan tr\u1ecdng c\u00f3 m\u1eb7t ph\u1eb3ng n\u1ed1i \u0111\u1ea5t li\u00ean t\u1ee5c.<\/li>\n\n\n\n<li><strong>Quy t\u1eafc v\u1ec1 kho\u1ea3ng c\u00e1ch:<\/strong> \u00c1p d\u1ee5ng c\u00e1c ti\u00eau chu\u1ea9n c\u00e1ch ly nghi\u00eam ng\u1eb7t h\u01a1n \u0111\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb c\u00f4ng su\u1ea5t cao v\u00e0 c\u00e1c c\u1eb7p t\u00edn hi\u1ec7u t\u1ea7n s\u1ed1 cao.<\/li>\n\n\n\n<li><strong>Qu\u1ea3n l\u00fd nhi\u1ec7t:<\/strong> Th\u00eam c\u00e1c l\u1ed7 d\u1eabn nhi\u1ec7t, l\u1edbp \u0111\u1ed3ng ph\u1ee7 ho\u1eb7c b\u1ed9 t\u1ea3n nhi\u1ec7t \u1edf nh\u1eefng v\u1ecb tr\u00ed c\u1ea7n thi\u1ebft.<\/li>\n\n\n\n<li><strong>Ki\u1ec3m tra quy t\u1eafc thi\u1ebft k\u1ebf (DRC):<\/strong> Th\u1ef1c hi\u1ec7n c\u00e1c ki\u1ec3m tra t\u1ef1 \u0111\u1ed9ng v\u1ec1 nhi\u1ec5u ch\u00e9o, tr\u1edf kh\u00e1ng v\u00e0 c\u00e1c \u0111i\u1ec3m n\u00f3ng nhi\u1ec7t ngay t\u1eeb giai \u0111o\u1ea1n thi\u1ebft k\u1ebf s\u01a1 b\u1ed9.<\/li>\n<\/ul>\n\n\n\n<p>Ngo\u00e0i nh\u1eefng h\u01b0\u1edbng d\u1eabn n\u00e0y, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf n\u00ean \u0111\u00e1nh gi\u00e1 t\u00e1c \u0111\u1ed9ng c\u1ee7a <strong>h\u01b0\u1edbng c\u1ee7a linh ki\u1ec7n<\/strong>. Vi\u1ec7c xoay m\u1ed9t linh ki\u1ec7n ph\u00e2n c\u1ef1c (ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111i-\u1ed1t ho\u1eb7c tinh th\u1ec3) \u0111\u1ec3 c\u0103n ch\u1ec9nh c\u00e1c ch\u00e2n c\u1ee7a n\u00f3 theo h\u01b0\u1edbng \u0111\u01b0\u1eddng d\u1eabn ch\u00ednh c\u00f3 th\u1ec3 r\u00fat ng\u1eafn c\u00e1c \u0111\u01b0\u1eddng d\u1eabn quan tr\u1ecdng v\u00e0 gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng l\u1ed7 vias c\u1ea7n thi\u1ebft. S\u1ed1 l\u01b0\u1ee3ng l\u1ed7 vias \u00edt h\u01a1n \u0111\u1ed3ng ngh\u0129a v\u1edbi \u0111i\u1ec7n c\u1ea3m ph\u1ee5 th\u1ea5p h\u01a1n, \u0111i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t c\u00f3 l\u1ee3i cho c\u00e1c m\u1ea1ng ph\u00e2n ph\u1ed1i t\u00edn hi\u1ec7u \u0111\u1ed3ng h\u1ed3 t\u1ea7n s\u1ed1 cao.<\/p>\n\n\n\n<p>Trong nhi\u1ec1u d\u1ef1 \u00e1n, ph\u01b0\u01a1ng ph\u00e1p l\u1eb7p l\u1ea1i \u0111\u01b0\u1ee3c ch\u1ee9ng minh l\u00e0 hi\u1ec7u qu\u1ea3 nh\u1ea5t. B\u1ea3n b\u1ed1 tr\u00ed ban \u0111\u1ea7u c\u00f3 th\u1ec3 \u01b0u ti\u00ean gi\u1ea3m thi\u1ec3u k\u00edch th\u01b0\u1edbc b\u1ea3ng m\u1ea1ch, sau \u0111\u00f3 c\u00e1c c\u00f4ng c\u1ee5 m\u00f4 ph\u1ecfng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t nhi\u1ec7t. N\u1ebfu c\u00e1c m\u00f4 ph\u1ecfng ph\u00e1t hi\u1ec7n ra v\u1ea5n \u0111\u1ec1, b\u1ea3n b\u1ed1 tr\u00ed c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh b\u1eb1ng c\u00e1ch n\u1edbi l\u1ecfng kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c linh ki\u1ec7n ho\u1eb7c ph\u00e2n b\u1ed5 l\u1ea1i c\u00e1c l\u1edbp t\u00edn hi\u1ec7u. V\u00f2ng l\u1eb7p ph\u1ea3n h\u1ed3i n\u00e0y ti\u1ebfp t\u1ee5c cho \u0111\u1ebfn khi thi\u1ebft k\u1ebf \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u hi\u1ec7u su\u1ea5t \u0111\u00e3 \u0111\u1ec1 ra m\u00e0 kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n ng\u00e2n s\u00e1ch ho\u1eb7c kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<p>Nh\u00ecn v\u1ec1 ph\u00eda tr\u01b0\u1edbc, b\u01b0\u1edbc ti\u1ebfp theo h\u1ee3p l\u00fd l\u00e0 xem x\u00e9t c\u00e1ch th\u1ee9c m\u00e0 m\u1eadt \u0111\u1ed9 v\u00e0 chi\u1ebfn l\u01b0\u1ee3c b\u1ed1 tr\u00ed \u0111\u00e3 ch\u1ecdn \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn quy tr\u00ecnh l\u1eafp r\u00e1p. Vi\u1ec7c l\u1ef1a ch\u1ecdn l\u1edbp ph\u1ee7 ch\u1ed1ng h\u00e0n, l\u1edbp ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra ph\u00f9 h\u1ee3p s\u1ebd \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea3ng m\u1ea1ch c\u00f3 m\u1eadt \u0111\u1ed9 linh ki\u1ec7n cao c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t v\u00e0 ki\u1ec3m tra m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady. Ph\u1ea7n ti\u1ebfp theo s\u1ebd ph\u00e2n t\u00edch chi ti\u1ebft c\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n l\u01b0u \u00fd trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p n\u00e0y.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u1ef1a ch\u1ecdn quy tr\u00ecnh l\u1eafp r\u00e1p ph\u00f9 h\u1ee3p: L\u1edbp ph\u1ee7 ch\u1ed1ng h\u00e0n, x\u1eed l\u00fd b\u1ec1 m\u1eb7t v\u00e0 c\u00e1c ph\u01b0\u01a1ng \u00e1n ki\u1ec3m tra<\/h2>\n\n\n\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn quy tr\u00ecnh l\u1eafp r\u00e1p ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 quan tr\u1ecdng kh\u00f4ng k\u00e9m vi\u1ec7c ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n cho b\u1ea3ng m\u1ea1ch. L\u1edbp ph\u1ee7 ch\u1ed1ng h\u00e0n, l\u1edbp ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t v\u00e0 quy tr\u00ecnh ki\u1ec3m tra \u0111\u01b0\u1ee3c ph\u1ed1i h\u1ee3p h\u00e0i h\u00f2a s\u1ebd b\u1ea3o v\u1ec7 m\u1ea1ch \u0111i\u1ec7n, \u0111\u1ea3m b\u1ea3o c\u00e1c m\u1ed1i h\u00e0n ch\u1eafc ch\u1eafn v\u00e0 duy tr\u00ec hi\u1ec7u su\u1ea5t s\u1ea3n xu\u1ea5t cao. Ph\u1ea7n ph\u00e2n t\u00edch sau \u0111\u00e2y s\u1ebd \u0111i s\u00e2u v\u00e0o t\u1eebng y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh, n\u00eau b\u1eadt nh\u1eefng s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i th\u01b0\u1eddng g\u1eb7p v\u00e0 \u0111\u01b0a ra nh\u1eefng l\u1eddi khuy\u00ean thi\u1ebft th\u1ef1c d\u00e0nh cho c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf \u0111ang t\u00ecm ki\u1ebfm m\u1ed9t gi\u1ea3i ph\u00e1p v\u1eeba \u0111\u00e1ng tin c\u1eady v\u1eeba ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/p>\n\n\n\n<p><strong>L\u1ef1a ch\u1ecdn l\u1edbp ph\u1ee7 ch\u1ed1ng h\u00e0n<\/strong> L\u1edbp ph\u1ee7 ch\u1ed1ng h\u00e0n gi\u00fap b\u1ea3o v\u1ec7 c\u00e1c \u0111\u01b0\u1eddng m\u1ea1ch \u0111\u1ed3ng kh\u1ecfi qu\u00e1 tr\u00ecnh oxy h\u00f3a, ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng c\u1ea7u h\u00e0n v\u00e0 cung c\u1ea5p d\u1ea5u hi\u1ec7u tr\u1ef1c quan \u0111\u1ec3 \u0111\u1ecbnh v\u1ecb linh ki\u1ec7n. Hai lo\u1ea1i l\u1edbp ph\u1ee7 n\u00e0y \u0111ang chi\u1ebfm \u01b0u th\u1ebf tr\u00ean th\u1ecb tr\u01b0\u1eddng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>D\u1ea1ng epoxy (ch\u1ea5t l\u1ecfng c\u00f3 th\u1ec3 t\u1ea1o h\u00ecnh b\u1eb1ng \u00e1nh s\u00e1ng, LPI)<\/strong> \u2013 c\u00f3 \u0111\u1ed9 b\u00e1m d\u00ednh v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng h\u00f3a ch\u1ea5t tuy\u1ec7t v\u1eddi, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean cho h\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i b\u1ea3ng m\u1ea1ch c\u00f3 s\u1ea3n l\u01b0\u1ee3ng trung b\u00ecnh. S\u1ea3n ph\u1ea9m n\u00e0y ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 h\u00e0n l\u1ea1i ti\u00eau chu\u1ea9n v\u00e0 t\u01b0\u01a1ng th\u00edch v\u1edbi h\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i l\u1edbp ph\u1ee7 b\u1ec1 m\u1eb7t.<\/li>\n\n\n\n<li><strong>M\u00e0ng kh\u00f4 (d\u1ea1ng m\u00e0ng)<\/strong> \u2013 mang l\u1ea1i \u0111\u1ed9 ch\u00ednh x\u00e1c cao h\u01a1n trong vi\u1ec7c c\u0103n ch\u1ec9nh v\u00e0 c\u00e1c l\u1edbp m\u1ecfng h\u01a1n, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 mang l\u1ea1i l\u1ee3i th\u1ebf cho c\u00e1c linh ki\u1ec7n c\u00f3 kho\u1ea3ng c\u00e1ch ch\u00e2n r\u1ea5t nh\u1ecf ho\u1eb7c c\u00e1c thi\u1ebft k\u1ebf t\u1ea7n s\u1ed1 cao, n\u01a1i m\u00e0 t\u1ed5n th\u1ea5t \u0111i\u1ec7n m\u00f4i l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng. Nh\u01b0\u1ee3c \u0111i\u1ec3m l\u00e0 chi ph\u00ed v\u1eadt li\u1ec7u cao h\u01a1n v\u00e0 quy tr\u00ecnh x\u1eed l\u00fd ph\u1ee9c t\u1ea1p h\u01a1n.<\/li>\n<\/ul>\n\n\n\n<p>Khi thi\u1ebft k\u1ebf bao g\u1ed3m c\u00e1c m\u1ea3ng BGA (m\u1ea3ng b\u00f3ng l\u01b0\u1edbi) ho\u1eb7c m\u1ea3ng l\u1ed7 vi m\u1ea1ch \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed d\u00e0y \u0111\u1eb7c, vi\u1ec7c s\u1eed d\u1ee5ng m\u1eb7t n\u1ea1 m\u00e0ng kh\u00f4 th\u01b0\u1eddng gi\u00fap gi\u1ea3m thi\u1ec3u nguy c\u01a1 tr\u01b0\u1ee3t m\u1eb7t n\u1ea1 trong qu\u00e1 tr\u00ecnh h\u00e0n l\u1ea1i. \u0110\u1ed1i v\u1edbi c\u00e1c b\u1ea3ng m\u1ea1ch \u0111\u01a1n gi\u1ea3n h\u01a1n, c\u00f3 m\u1eadt \u0111\u1ed9 t\u1eeb th\u1ea5p \u0111\u1ebfn trung b\u00ecnh, m\u1eb7t n\u1ea1 LPI l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn \u0111\u00e1ng tin c\u1eady v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/p>\n\n\n\n<p><strong>C\u00e1c t\u00f9y ch\u1ecdn ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t<\/strong> L\u1edbp ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t quy\u1ebft \u0111\u1ecbnh kh\u1ea3 n\u0103ng ti\u1ebfp nh\u1eadn ch\u1ea5t h\u00e0n c\u1ee7a c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac \u0111\u1ed3ng tr\u00ean b\u1ea3ng m\u1ea1ch. C\u00f3 ba lo\u1ea1i l\u1edbp ho\u00e0n thi\u1ec7n th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh nh\u1ea5t:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>HASL (L\u00e0m ph\u1eb3ng m\u1ed1i h\u00e0n b\u1eb1ng kh\u00ed n\u00f3ng)<\/strong> \u2013 m\u1ed9t l\u1edbp thi\u1ebfc m\u1ecfng \u0111\u01b0\u1ee3c ph\u1ee7 l\u00ean b\u1eb1ng c\u00e1ch nh\u00fang b\u1ea3ng m\u1ea1ch v\u00e0o h\u1ee3p kim h\u00e0n n\u00f3ng ch\u1ea3y. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 chi ph\u00ed th\u1ea5p v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c linh ki\u1ec7n c\u00f3 ch\u00e2n ch\u00ec ti\u00eau chu\u1ea9n. Tuy nhi\u00ean, b\u1ec1 m\u1eb7t t\u01b0\u01a1ng \u0111\u1ed1i g\u1ed3 gh\u1ec1 c\u00f3 th\u1ec3 c\u1ea3n tr\u1edf kh\u1ea3 n\u0103ng h\u00e0n \u1edf kho\u1ea3ng c\u00e1ch ch\u00e2n h\u00e0n nh\u1ecf, v\u00e0 l\u1edbp ph\u1ee7 n\u00e0y c\u00f3 th\u1ec3 b\u1ecb ch\u1ea3y l\u1ea1i trong c\u00e1c quy tr\u00ecnh nhi\u1ec7t \u0111\u1ed9 cao, d\u1eabn \u0111\u1ebfn nguy c\u01a1 bi\u1ebfn d\u1ea1ng c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac.<\/li>\n\n\n\n<li><strong>ENIG (M\u1ea1 niken kh\u00f4ng \u0111i\u1ec7n v\u00e0 m\u1ea1 v\u00e0ng ng\u00e2m)<\/strong> \u2013 ph\u1ee7 m\u1ed9t l\u1edbp niken m\u1ecfng, sau \u0111\u00f3 ph\u1ee7 th\u00eam m\u1ed9t l\u1edbp v\u00e0ng b\u00ean ngo\u00e0i. C\u00f4ng ngh\u1ec7 ENIG t\u1ea1o ra b\u1ec1 m\u1eb7t ph\u1eb3ng, ch\u1ed1ng oxy h\u00f3a, r\u1ea5t l\u00fd t\u01b0\u1edfng cho c\u00e1c m\u1ea1ch in c\u00f3 kho\u1ea3ng c\u00e1ch ch\u00e2n c\u1eafm nh\u1ecf v\u00e0 c\u00e1c m\u1ea1ch kh\u00f4ng ch\u1ee9a ch\u00ec. L\u1edbp v\u00e0ng n\u00e0y c\u0169ng gi\u00fap k\u00e9o d\u00e0i th\u1eddi gian b\u1ea3o qu\u1ea3n. Tuy nhi\u00ean, nh\u01b0\u1ee3c \u0111i\u1ec3m l\u00e0 chi ph\u00ed v\u1eadt li\u1ec7u cao h\u01a1n v\u00e0 c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n khuy\u1ebft t\u1eadt \u201c\u0111\u1ec7m \u0111en\u201d n\u1ebfu qu\u00e1 tr\u00ecnh m\u1ea1 niken kh\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t \u0111\u00fang c\u00e1ch.<\/li>\n\n\n\n<li><strong>M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng\/M\u1ea1 b\u1ea1c nh\u00fang n\u00f3ng<\/strong> \u2013 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p n\u00e0y t\u1ea1o ra b\u1ec1 m\u1eb7t ph\u1eb3ng v\u1edbi chi ph\u00ed th\u1ea5p h\u01a1n so v\u1edbi ENIG. M\u1ea1 thi\u1ebfc ng\u00e2m d\u1ec5 s\u1eeda ch\u1eefa nh\u01b0ng c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n c\u00e1c s\u1ee3i kim lo\u1ea1i m\u1ea3nh theo th\u1eddi gian, trong khi m\u1ea1 b\u1ea1c ng\u00e2m c\u00f3 \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n t\u1ed1t nh\u01b0ng d\u1ec5 b\u1ecb x\u1ec9n m\u00e0u h\u01a1n trong m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt.<\/li>\n<\/ol>\n\n\n\n<p>M\u1ed9t nguy\u00ean t\u1eafc th\u1ef1c ti\u1ec5n: n\u00ean ch\u1ecdn c\u00f4ng ngh\u1ec7 ENIG khi thi\u1ebft k\u1ebf s\u1eed d\u1ee5ng c\u00e1c linh ki\u1ec7n c\u00f3 kho\u1ea3ng c\u00e1ch ch\u00e2n d\u01b0\u1edbi 0,5 mm ho\u1eb7c khi b\u1ea3ng m\u1ea1ch s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong th\u1eddi gian d\u00e0i. \u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u1ea7n \u0111\u1ed9 b\u1ec1n cao v\u00e0 ch\u00fa tr\u1ecdng \u0111\u1ebfn chi ph\u00ed, c\u00f3 k\u00edch th\u01b0\u1edbc ch\u00e2n m\u1ea1ch l\u1edbn h\u01a1n, c\u00f4ng ngh\u1ec7 HASL v\u1eabn l\u00e0 l\u1ef1a ch\u1ecdn \u0111\u00e1ng tin c\u1eady. C\u00f4ng ngh\u1ec7 m\u1ea1 ng\u00e2m (Immersion) ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c m\u1eabu th\u1eed nghi\u1ec7m s\u1ea3n xu\u1ea5t s\u1ed1 l\u01b0\u1ee3ng \u00edt, n\u01a1i th\u1eddi gian ho\u00e0n th\u00e0nh nhanh \u0111\u01b0\u1ee3c \u01b0u ti\u00ean h\u01a1n so v\u1edbi c\u00e1c lo ng\u1ea1i v\u1ec1 \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i.<\/p>\n\n\n\n<p><strong>C\u00e1c chi\u1ebfn l\u01b0\u1ee3c ki\u1ec3m th\u1eed<\/strong> Ngay c\u1ea3 khi \u0111\u00e3 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u m\u1ed9t c\u00e1ch ho\u00e0n h\u1ea3o, c\u00e1c khuy\u1ebft t\u1eadt v\u1eabn c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p. Vi\u1ec7c t\u00edch h\u1ee3p c\u00e1c b\u01b0\u1edbc ki\u1ec3m tra ph\u00f9 h\u1ee3p ngay t\u1eeb giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a quy tr\u00ecnh s\u1ea3n xu\u1ea5t s\u1ebd gi\u00fap ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 tr\u01b0\u1edbc khi ph\u1ea3i ti\u1ebfn h\u00e0nh s\u1eeda ch\u1eefa t\u1ed1n k\u00e9m. Th\u00f4ng th\u01b0\u1eddng, ng\u01b0\u1eddi ta \u00e1p d\u1ee5ng ba c\u1ea5p \u0111\u1ed9 ki\u1ec3m tra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ki\u1ec3m tra b\u1eb1ng m\u1eaft th\u01b0\u1eddng<\/strong> \u2013 m\u1ed9t b\u01b0\u1edbc ki\u1ec3m tra quang h\u1ecdc th\u1ee7 c\u00f4ng ho\u1eb7c t\u1ef1 \u0111\u1ed9ng (AOI) nh\u1eb1m x\u00e1c minh \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a l\u1edbp ph\u1ee7 ch\u1ed1ng h\u00e0n, v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t linh ki\u1ec7n v\u00e0 c\u00e1c khuy\u1ebft t\u1eadt h\u00e0n r\u00f5 r\u00e0ng. AOI \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch \u0111\u1ed1i v\u1edbi c\u00e1c b\u1ea3ng m\u1ea1ch c\u00f3 m\u1eadt \u0111\u1ed9 linh ki\u1ec7n cao, n\u01a1i m\u1eaft ng\u01b0\u1eddi c\u00f3 th\u1ec3 b\u1ecf s\u00f3t c\u00e1c \u0111i\u1ec3m h\u00e0n ch\u1eadp nh\u1ecf.<\/li>\n\n\n\n<li><strong>Ki\u1ec3m tra \u0111i\u1ec7n<\/strong> \u2013 bao g\u1ed3m ki\u1ec3m tra t\u00ednh li\u00ean t\u1ee5c, ph\u00e1t hi\u1ec7n ng\u1eafn m\u1ea1ch v\u1edbi \u0111\u1ea5t v\u00e0 c\u00e1c vect\u01a1 ki\u1ec3m tra ch\u1ee9c n\u0103ng. M\u00e1y ki\u1ec3m tra \u0111\u1ea7u d\u00f2 di \u0111\u1ed9ng r\u1ea5t linh ho\u1ea1t cho c\u00e1c \u0111\u1ee3t s\u1ea3n xu\u1ea5t s\u1ed1 l\u01b0\u1ee3ng \u00edt, trong khi gi\u00e1 \u0111\u1ee1 ki\u1ec3u \u201cbed-of-nails\u201d l\u1ea1i mang l\u1ea1i hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed cho c\u00e1c l\u00f4 s\u1ea3n xu\u1ea5t quy m\u00f4 l\u1edbn h\u01a1n.<\/li>\n\n\n\n<li><strong>Ki\u1ec3m tra b\u1eb1ng tia X<\/strong> \u2013 r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ed1i v\u1edbi c\u00e1c m\u1ed1i h\u00e0n \u1ea9n nh\u01b0 c\u00e1c h\u1ea1t h\u00e0n BGA, QFN ho\u1eb7c CSP (g\u00f3i chip quy m\u00f4 nh\u1ecf). Tia X gi\u00fap ph\u00e1t hi\u1ec7n c\u00e1c l\u1ed7 r\u1ed7ng, hi\u1ec7n t\u01b0\u1ee3ng th\u1ea5m h\u00e0n kh\u00f4ng \u0111\u1ee7 ho\u1eb7c sai l\u1ec7ch v\u1ecb tr\u00ed m\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra b\u1eb1ng m\u1eaft th\u01b0\u1eddng kh\u00f4ng th\u1ec3 ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c.<\/li>\n<\/ul>\n\n\n\n<p>C\u00e1c nh\u00e0 thi\u1ebft k\u1ebf n\u00ean \u0111i\u1ec1u ch\u1ec9nh m\u1ee9c \u0111\u1ed9 ki\u1ec3m tra cho ph\u00f9 h\u1ee3p v\u1edbi m\u1ee9c \u0111\u1ed9 r\u1ee7i ro c\u1ee7a bo m\u1ea1ch. M\u1ed9t nguy\u00ean m\u1eabu d\u00e0nh cho thi\u1ebft b\u1ecb ti\u00eau d\u00f9ng c\u00f3 th\u1ec3 ch\u1ec9 c\u1ea7n ki\u1ec3m tra b\u1eb1ng m\u1eaft th\u01b0\u1eddng v\u00e0 ki\u1ec3m tra t\u00ednh li\u00ean t\u1ee5c c\u01a1 b\u1ea3n, trong khi \u0111\u00f3, m\u1ed9t thi\u1ebft b\u1ecb y t\u1ebf ho\u1eb7c linh ki\u1ec7n h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch b\u1eb1ng tia X to\u00e0n di\u1ec7n v\u00e0 ki\u1ec3m tra ch\u1ee9c n\u0103ng.<\/p>\n\n\n\n<p><strong>T\u1ed5ng h\u1ee3p l\u1ea1i<\/strong> M\u1ed9t quy tr\u00ecnh ra quy\u1ebft \u0111\u1ecbnh \u0111i\u1ec3n h\u00ecnh c\u00f3 th\u1ec3 tr\u00f4ng nh\u01b0 sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0110\u00e1nh gi\u00e1 m\u1eadt \u0111\u1ed9 v\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c linh ki\u1ec7n<\/strong> \u2192 Ch\u1ecdn m\u1eb7t n\u1ea1 m\u00e0ng kh\u00f4 v\u00e0 ENIG n\u1ebfu c\u00f3 BGA kho\u1ea3ng c\u00e1ch ch\u00e2n nh\u1ecf; n\u1ebfu kh\u00f4ng, ch\u1ecdn m\u1eb7t n\u1ea1 LPI k\u1ebft h\u1ee3p v\u1edbi l\u1edbp ph\u1ee7 HASL ho\u1eb7c l\u1edbp ph\u1ee7 ng\u00e2m.<\/li>\n\n\n\n<li><strong>C\u00e2n nh\u1eafc \u0111\u1ebfn c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng<\/strong> \u2192 N\u1ebfu bo m\u1ea1ch c\u00f3 th\u1ec3 ti\u1ebfp x\u00fac v\u1edbi \u0111\u1ed9 \u1ea9m ho\u1eb7c \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong th\u1eddi gian d\u00e0i, n\u00ean s\u1eed d\u1ee5ng l\u1edbp m\u1ea1 ENIG ho\u1eb7c l\u1edbp m\u1ea1 b\u1ea1c ng\u00e2m \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd \u0111\u1ec3 tr\u00e1nh qu\u00e1 tr\u00ecnh oxy h\u00f3a.<\/li>\n\n\n\n<li><strong>X\u00e1c \u0111\u1ecbnh ng\u00e2n s\u00e1ch ki\u1ec3m th\u1eed v\u00e0 m\u1ee9c \u0111\u1ed9 quan tr\u1ecdng<\/strong> \u2192 Ph\u00e2n b\u1ed5 khu v\u1ef1c ki\u1ec3m tra (AOI) cho t\u1eebng bo m\u1ea1ch, s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra \u0111\u1ea7u d\u00f2 di \u0111\u1ed9ng (flying probe) cho c\u00e1c l\u00f4 s\u1ea3n xu\u1ea5t quy m\u00f4 trung b\u00ecnh v\u00e0 d\u00e0nh ph\u01b0\u01a1ng ph\u00e1p ch\u1ee5p X-quang cho c\u00e1c thi\u1ebft k\u1ebf c\u00f3 m\u1ed1i h\u00e0n \u1ea9n.<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><em>\u201cVi\u1ec7c l\u1ef1a ch\u1ecdn s\u1ef1 k\u1ebft h\u1ee3p ph\u00f9 h\u1ee3p gi\u1eefa l\u1edbp ph\u1ee7, l\u1edbp ho\u00e0n thi\u1ec7n v\u00e0 quy tr\u00ecnh ki\u1ec3m tra kh\u00f4ng ch\u1ec9 gi\u00fap n\u00e2ng cao hi\u1ec7u su\u1ea5t s\u1ea3n xu\u1ea5t ngay t\u1eeb l\u1ea7n \u0111\u1ea7u ti\u00ean m\u00e0 c\u00f2n gi\u1ea3m thi\u1ec3u c\u00e1c s\u1ef1 c\u1ed1 h\u1ecfng h\u00f3c trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng l\u00e2u d\u00e0i.\u201d<\/em> \u2013 m\u1ed9t k\u1ef9 s\u01b0 l\u1eafp r\u00e1p gi\u00e0u kinh nghi\u1ec7m<\/p>\n<\/blockquote>\n\n\n\n<p>B\u1eb1ng c\u00e1ch \u0111i\u1ec1u ch\u1ec9nh ba y\u1ebfu t\u1ed1 n\u00e0y sao cho ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c m\u1ee5c ti\u00eau v\u1ec1 hi\u1ec7u su\u1ea5t, \u0111\u1ed9 tin c\u1eady v\u00e0 chi ph\u00ed c\u1ee7a d\u1ef1 \u00e1n, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 t\u1ef1 tin chuy\u1ec3n t\u1eeb b\u1ea3n s\u01a1 \u0111\u1ed3 sang m\u1ed9t b\u1ea3ng m\u1ea1ch c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t \u0111\u01b0\u1ee3c, s\u1eb5n s\u00e0ng cho ph\u1ea7n ti\u1ebfp theo, n\u01a1i c\u00e1c chi\u1ebfn l\u01b0\u1ee3c l\u1eadp ng\u00e2n s\u00e1ch s\u1ebd \u0111\u01b0\u1ee3c xem x\u00e9t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e2n b\u1eb1ng gi\u1eefa chi ph\u00ed v\u00e0 hi\u1ec7u su\u1ea5t: C\u00e1ch s\u1eafp x\u1ebfp th\u1ee9 t\u1ef1 \u01b0u ti\u00ean c\u00e1c t\u00ednh n\u0103ng khi ng\u00e2n s\u00e1ch eo h\u1eb9p<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/eageycejtjewikfgmnzy.supabase.co\/storage\/v1\/object\/public\/article\/35c148ab-98b1-4286-8435-ff2c99848f71\/17ae62dc-8978-4986-8500-89761e0bb99b.png\" alt=\"Balancing Cost and Performance: How to Prioritize Features When Budget Is Tight\"\/><\/figure>\n\n\n\n<p>M\u1ed9t v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p trong c\u00e1c d\u1ef1 \u00e1n PCB l\u00e0 vi\u1ec7c quy\u1ebft \u0111\u1ecbnh nh\u1eefng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00e0o c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c n\u1edbi l\u1ecfng m\u00e0 kh\u00f4ng l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ee9c n\u0103ng c\u1ed1t l\u00f5i. Khi ng\u00e2n s\u00e1ch kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c s\u1ef1 k\u1ebft h\u1ee3p linh ki\u1ec7n, s\u1ed1 l\u1edbp ho\u1eb7c l\u1edbp ho\u00e0n thi\u1ec7n l\u00fd t\u01b0\u1edfng, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf ph\u1ea3i \u0111\u01b0a ra nh\u1eefng s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i c\u00f3 ch\u1ee7 \u0111\u00edch. Ph\u1ea7n n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn c\u00f3 h\u1ec7 th\u1ed1ng nh\u1eb1m c\u00e2n b\u1eb1ng gi\u1eefa c\u00e1c h\u1ea1n ch\u1ebf v\u1ec1 chi ph\u00ed v\u00e0 m\u1ee5c ti\u00eau hi\u1ec7u su\u1ea5t, \u0111\u1ea3m b\u1ea3o b\u1ea3ng m\u1ea1ch cu\u1ed1i c\u00f9ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c nh\u1eefng y\u00eau c\u1ea7u quan tr\u1ecdng nh\u1ea5t.<\/p>\n\n\n\n<p><strong>H\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi c\u00e1c y\u00eau c\u1ea7u then ch\u1ed1t<\/strong> X\u00e1c \u0111\u1ecbnh c\u00e1c t\u00ednh n\u0103ng c\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn m\u1ee5c \u0111\u00edch c\u1ee7a s\u1ea3n ph\u1ea9m. \u0110\u1ed1i v\u1edbi m\u1ed9t b\u1ed9 \u0111i\u1ec1u khi\u1ec3n c\u1ea3m bi\u1ebfn, t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111i\u1ec7n \u00e1p c\u00f3 th\u1ec3 l\u00e0 nh\u1eefng y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c, trong khi c\u00e1c y\u1ebfu t\u1ed1 th\u1ea9m m\u1ef9 nh\u01b0 m\u00e0u s\u1eafc bo m\u1ea1ch l\u1ea1i l\u00e0 t\u00f9y ch\u1ecdn. B\u1eb1ng c\u00e1ch \u0111\u00e1nh d\u1ea5u t\u1eebng y\u00eau c\u1ea7u l\u00e0 <em>kh\u00f4ng th\u1ec3 thi\u1ebfu<\/em>, <em>kh\u00f4ng b\u1eaft bu\u1ed9c<\/em>, ho\u1eb7c <em>t\u00f9y ch\u1ecdn<\/em>, c\u00e1c nh\u00f3m thi\u1ebft l\u1eadp m\u1ed9t h\u1ec7 th\u1ed1ng ph\u00e2n c\u1ea5p \u0111\u1ec3 l\u00e0m c\u01a1 s\u1edf cho c\u00e1c quy\u1ebft \u0111\u1ecbnh ti\u1ebfp theo.<\/p>\n\n\n\n<p><strong>\u0110\u00e1nh gi\u00e1 t\u00e1c \u0111\u1ed9ng v\u1ec1 chi ph\u00ed c\u1ee7a t\u1eebng c\u1ea5p \u0111\u1ed9<\/strong> C\u00e1c y\u1ebfu t\u1ed1 chi ph\u00ed \u0111i\u1ec3n h\u00ecnh bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>S\u1ed1 l\u1edbp \u0111\u1ed3ng (b\u1ea3ng m\u1ea1ch m\u1ed9t m\u1eb7t c\u00f3 gi\u00e1 r\u1ebb nh\u1ea5t; c\u00e1c b\u1ea3ng m\u1ea1ch nhi\u1ec1u l\u1edbp s\u1ebd l\u00e0m t\u0103ng chi ph\u00ed v\u1eadt li\u1ec7u v\u00e0 gia c\u00f4ng)<\/li>\n\n\n\n<li>Chi\u1ec1u r\u1ed9ng v\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng m\u1ea1ch (c\u00e1c c\u1ea5u tr\u00fac c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf \u0111\u00f2i h\u1ecfi qu\u00e1 tr\u00ecnh \u0103n m\u00f2n tinh vi h\u01a1n, d\u1eabn \u0111\u1ebfn chi ph\u00ed s\u1ea3n xu\u1ea5t t\u0103ng cao)<\/li>\n\n\n\n<li>B\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n (HASL c\u00f3 gi\u00e1 th\u00e0nh r\u1ebb, ENIG mang l\u1ea1i kh\u1ea3 n\u0103ng h\u00e0n t\u1ed1t h\u01a1n nh\u01b0ng gi\u00e1 th\u00e0nh cao h\u01a1n)<\/li>\n\n\n\n<li>M\u1eadt \u0111\u1ed9 linh ki\u1ec7n (m\u1eadt \u0111\u1ed9 cao c\u00f3 th\u1ec3 \u0111\u00f2i h\u1ecfi quy tr\u00ecnh l\u1eafp r\u00e1p ph\u1ee9c t\u1ea1p h\u01a1n, d\u1eabn \u0111\u1ebfn t\u0103ng chi ph\u00ed nh\u00e2n c\u00f4ng)<\/li>\n<\/ul>\n\n\n\n<p>Vi\u1ec7c \u0111\u1ecbnh l\u01b0\u1ee3ng c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y, d\u00f9 ch\u1ec9 \u1edf m\u1ee9c s\u01a1 b\u1ed9, c\u0169ng gi\u00fap x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c nh\u1eefng l\u0129nh v\u1ef1c c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m chi ph\u00ed nhi\u1ec1u nh\u1ea5t. V\u00ed d\u1ee5, vi\u1ec7c chuy\u1ec3n t\u1eeb b\u1ea3ng m\u1ea1ch 4 l\u1edbp sang b\u1ea3ng m\u1ea1ch 2 l\u1edbp c\u00f3 th\u1ec3 gi\u00fap c\u1eaft gi\u1ea3m chi ph\u00ed v\u1eadt li\u1ec7u t\u1eeb 20\u201330% trong khi v\u1eabn \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c y\u00eau c\u1ea7u v\u1ec1 t\u1ea7n s\u1ed1 th\u1ea5p.<\/p>\n\n\n\n<p><strong>\u0110i\u1ec1u ch\u1ec9nh m\u1ee9c gi\u1ea3m chi ph\u00ed cho ph\u00f9 h\u1ee3p v\u1edbi m\u1ee9c \u0111\u1ed9 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c v\u1ec1 hi\u1ec7u su\u1ea5t<\/strong> Kh\u00f4ng ph\u1ea3i m\u1ecdi s\u1ef1 c\u1eaft gi\u1ea3m \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t nh\u01b0 nhau. H\u00e3y xem x\u00e9t c\u00e1c t\u00ecnh hu\u1ed1ng sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><em>Gi\u1ea3m s\u1ed1 l\u1edbp<\/em>: N\u1ebfu m\u1ea1ch ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ea7n s\u1ed1 d\u01b0\u1edbi 100 MHz, m\u1ed9t b\u1ea3ng m\u1ea1ch 2 l\u1edbp th\u01b0\u1eddng l\u00e0 \u0111\u1ee7, nh\u01b0ng c\u00e1c t\u00edn hi\u1ec7u s\u1ed1 t\u1ed1c \u0111\u1ed9 cao c\u00f3 th\u1ec3 b\u1ecb nhi\u1ec5u ch\u00e9o gia t\u0103ng do s\u1ed1 l\u1edbp m\u1ea1ch \u00edt h\u01a1n.<\/li>\n\n\n\n<li><em>\u0110\u01b0\u1eddng v\u1ebft r\u1ed9ng h\u01a1n<\/em>: Vi\u1ec7c t\u0103ng chi\u1ec1u r\u1ed9ng \u0111\u01b0\u1eddng d\u1eabn gi\u00fap qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t d\u1ec5 d\u00e0ng h\u01a1n nh\u01b0ng l\u1ea1i l\u00e0m t\u0103ng t\u1ed5n th\u1ea5t \u0111\u1ed3ng, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn c\u00e1c \u0111\u01b0\u1eddng d\u1eabn c\u1ea5p ngu\u1ed3n.<\/li>\n\n\n\n<li><em>K\u1ebft th\u00fac \u0111\u01a1n gi\u1ea3n h\u01a1n<\/em>: Vi\u1ec7c chuy\u1ec3n t\u1eeb ENIG sang HASL c\u00f3 th\u1ec3 l\u00e0m t\u0103ng nguy c\u01a1 xu\u1ea5t hi\u1ec7n c\u00e1c m\u1ed1i h\u00e0n l\u1ea1nh, tuy nhi\u00ean, trong m\u1ed9t d\u1ef1 \u00e1n s\u1edf th\u00edch quy m\u00f4 nh\u1ecf, m\u1ee9c \u0111\u1ed9 r\u1ee7i ro n\u00e0y l\u00e0 c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c.<\/li>\n<\/ul>\n\n\n\n<p>B\u1eb1ng c\u00e1ch so s\u00e1nh t\u1eebng ph\u01b0\u01a1ng \u00e1n ti\u1ebft ki\u1ec7m chi ph\u00ed v\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a n\u00f3 \u0111\u1ed1i v\u1edbi hi\u1ec7u su\u1ea5t, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 lo\u1ea1i b\u1ecf nh\u1eefng l\u1ef1a ch\u1ecdn c\u00f3 th\u1ec3 l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c ch\u1ee9c n\u0103ng thi\u1ebft y\u1ebfu.<\/p>\n\n\n\n<p><strong>\u00c1p d\u1ee5ng m\u00f4 h\u00ecnh ch\u1ea5m \u0111i\u1ec3m c\u00f3 h\u1ec7 s\u1ed1<\/strong> M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u01a1n gi\u1ea3n l\u00e0 g\u00e1n \u0111i\u1ec3m cho t\u1eebng t\u00ednh n\u0103ng d\u1ef1a tr\u00ean m\u1ee9c \u0111\u1ed9 quan tr\u1ecdng (v\u00ed d\u1ee5: 5 \u0111i\u1ec3m cho t\u00ednh n\u0103ng b\u1eaft bu\u1ed9c, 3 \u0111i\u1ec3m cho t\u00ednh n\u0103ng n\u00ean c\u00f3, 1 \u0111i\u1ec3m cho t\u00ednh n\u0103ng t\u00f9y ch\u1ecdn). Sau \u0111\u00f3, ch\u1ea5m \u0111i\u1ec3m cho t\u1eebng ph\u01b0\u01a1ng \u00e1n thi\u1ebft k\u1ebf b\u1eb1ng c\u00e1ch c\u1ed9ng t\u1ed5ng s\u1ed1 \u0111i\u1ec3m c\u1ee7a c\u00e1c t\u00ednh n\u0103ng m\u00e0 ph\u01b0\u01a1ng \u00e1n \u0111\u00f3 gi\u1eef l\u1ea1i. Ph\u01b0\u01a1ng \u00e1n c\u00f3 \u0111i\u1ec3m s\u1ed1 cao nh\u1ea5t v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi ng\u00e2n s\u00e1ch s\u1ebd tr\u1edf th\u00e0nh gi\u1ea3i ph\u00e1p th\u1ecfa hi\u1ec7p \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t. C\u00e1ch ti\u1ebfp c\u1eadn \u0111\u1ecbnh l\u01b0\u1ee3ng n\u00e0y gi\u00fap gi\u1ea3m thi\u1ec3u s\u1ef1 thi\u00ean v\u1ecb v\u00e0 cung c\u1ea5p c\u01a1 s\u1edf l\u00fd lu\u1eadn r\u00f5 r\u00e0ng cho c\u00e1c b\u00ean li\u00ean quan.<\/p>\n\n\n\n<p><strong>T\u1eadn d\u1ee5ng c\u00e1c b\u1ed9 ph\u1eadn ti\u00eau chu\u1ea9n v\u00e0 c\u00e1c b\u1ea3n v\u1ebd hi\u1ec7n c\u00f3<\/strong> Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c linh ki\u1ec7n c\u00f3 s\u1eb5n tr\u00ean th\u1ecb tr\u01b0\u1eddng v\u1edbi k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 r\u1ed9ng r\u00e3i th\u01b0\u1eddng gi\u00fap gi\u1ea3m c\u1ea3 chi ph\u00ed linh ki\u1ec7n l\u1eabn c\u00f4ng s\u1ee9c thi\u1ebft k\u1ebf. Khi m\u1ed9t linh ki\u1ec7n \u0111\u1eb7t h\u00e0ng ri\u00eang c\u00f3 th\u1ec3 l\u00e0m t\u0103ng chi ph\u00ed th\u00eam $0.30 cho m\u1ed7i \u0111\u01a1n v\u1ecb, vi\u1ec7c thay th\u1ebf b\u1eb1ng m\u1ed9t m\u1ea1ch \u0111i\u1ec7n tr\u1edf ti\u00eau chu\u1ea9n c\u00f3 th\u1ec3 c\u1eaft gi\u1ea3m chi ph\u00ed \u0111\u00f3 m\u00e0 v\u1eabn \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111i\u1ec7n. H\u01a1n n\u1eefa, c\u00e1c linh ki\u1ec7n ti\u00eau chu\u1ea9n th\u01b0\u1eddng c\u00f3 t\u1ef7 l\u1ec7 thu h\u1ed3i cao h\u01a1n, t\u1eeb \u0111\u00f3 gi\u00e1n ti\u1ebfp ti\u1ebft ki\u1ec7m chi ph\u00ed cho vi\u1ec7c s\u1eeda ch\u1eefa l\u1ea1i.<\/p>\n\n\n\n<p><strong>H\u00e3y li\u00ean h\u1ec7 v\u1edbi c\u00e1c nh\u00e0 cung c\u1ea5p t\u1eeb s\u1edbm<\/strong> Vi\u1ec7c li\u00ean h\u1ec7 v\u1edbi nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t PCB ho\u1eb7c \u0111\u01a1n v\u1ecb l\u1eafp r\u00e1p trong qu\u00e1 tr\u00ecnh ph\u00e2n t\u00edch c\u00e2n nh\u1eafc c\u00e1c ph\u01b0\u01a1ng \u00e1n s\u1ebd gi\u00fap thu \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u chi ph\u00ed th\u1ef1c t\u1ebf. Nhi\u1ec1u nh\u00e0 cung c\u1ea5p cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5 t\u00ednh to\u00e1n chi ph\u00ed c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh gi\u00e1 d\u1ef1a tr\u00ean s\u1ed1 l\u1edbp, k\u00edch th\u01b0\u1edbc b\u1ea3ng m\u1ea1ch v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ho\u00e0n thi\u1ec7n. Vi\u1ec7c l\u1ea5y b\u00e1o gi\u00e1 s\u1edbm s\u1ebd gi\u00fap tr\u00e1nh nh\u1eefng b\u1ea5t ng\u1edd sau n\u00e0y v\u00e0 c\u00f3 th\u1ec3 gi\u00fap ph\u00e1t hi\u1ec7n c\u00e1c \u01b0u \u0111\u00e3i gi\u1ea3m gi\u00e1 theo s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 l\u1ef1a ch\u1ecdn c\u1ee5 th\u1ec3, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u1eb7t h\u00e0ng \u0111\u1ed3ng theo l\u00f4 l\u1edbn ho\u1eb7c ch\u1ecdn k\u00edch th\u01b0\u1edbc b\u1ea3ng m\u1ea1ch ti\u00eau chu\u1ea9n.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><em>\u201cM\u1ed9t ma tr\u1eadn chi ph\u00ed-hi\u1ec7u qu\u1ea3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng m\u1ed9t c\u00e1ch c\u00f3 h\u1ec7 th\u1ed1ng s\u1ebd bi\u1ebfn \u00e1p l\u1ef1c ng\u00e2n s\u00e1ch th\u00e0nh m\u1ed9t l\u1ee3i th\u1ebf trong thi\u1ebft k\u1ebf thay v\u00ec m\u1ed9t s\u1ef1 th\u1ecfa hi\u1ec7p,\u201d<\/em> m\u1ed9t chuy\u00ean gia t\u01b0 v\u1ea5n s\u1ea3n xu\u1ea5t gi\u00e0u kinh nghi\u1ec7m nh\u1eadn \u0111\u1ecbnh.<\/p>\n<\/blockquote>\n\n\n\n<p><strong>Danh s\u00e1ch ki\u1ec3m tra th\u1ef1c t\u1ebf d\u00e0nh cho nh\u1eefng ng\u01b0\u1eddi c\u00f3 ng\u00e2n s\u00e1ch eo h\u1eb9p<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ki\u1ec3m tra xem t\u1ea7n s\u1ed1 t\u00edn hi\u1ec7u c\u00f3 cho ph\u00e9p s\u1eed d\u1ee5ng \u00edt l\u1edbp h\u01a1n hay kh\u00f4ng.<\/li>\n\n\n\n<li>T\u1eadp trung c\u00e1c m\u1ea1ng d\u00e2y d\u1eabn \u0111\u1ec3 gi\u1ea3m y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 d\u00e0y c\u1ee7a \u0111\u1ed3ng.<\/li>\n\n\n\n<li>H\u00e3y ch\u1ecdn m\u1ed9t lo\u1ea1i b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 tin c\u1eady m\u00e0 kh\u00f4ng t\u1ed1n k\u00e9m qu\u00e1 m\u1ee9c.<\/li>\n\n\n\n<li>N\u1ebfu kh\u00f4ng gian cho ph\u00e9p, h\u00e3y ch\u1ecdn c\u00e1c linh ki\u1ec7n c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n \u0111\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p.<\/li>\n\n\n\n<li>C\u1ea7n xem x\u00e9t l\u1ea1i s\u1ef1 c\u1ea7n thi\u1ebft c\u1ee7a c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra n\u00e2ng cao (v\u00ed d\u1ee5: AOI) n\u1ebfu ki\u1ec3m tra ch\u1ee9c n\u0103ng \u0111\u00e3 \u0111\u1ee7.<\/li>\n\n\n\n<li>X\u00e1c nh\u1eadn r\u1eb1ng vi\u1ec7c gi\u1ea3m b\u1edbt \u0111\u00f3 kh\u00f4ng vi ph\u1ea1m c\u00e1c quy \u0111\u1ecbnh ho\u1eb7c ti\u00eau chu\u1ea9n an to\u00e0n.<\/li>\n<\/ul>\n\n\n\n<p><strong>Chu\u1ea9n b\u1ecb cho b\u01b0\u1edbc ti\u1ebfp theo<\/strong> Sau khi \u0111\u00e3 tinh gi\u1ea3n thi\u1ebft k\u1ebf xu\u1ed1ng m\u1ee9c t\u1ed1i \u01b0u v\u1ec1 chi ph\u00ed, d\u1ef1 \u00e1n \u0111\u00e3 s\u1eb5n s\u00e0ng t\u1eadp trung v\u00e0o kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t. Ph\u1ea7n ti\u1ebfp theo v\u1ec1 DFM (Thi\u1ebft k\u1ebf h\u01b0\u1edbng t\u1edbi kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t) s\u1ebd t\u00ecm hi\u1ec3u c\u00e1ch tinh ch\u1ec9nh c\u00e1c chi ti\u1ebft b\u1ed1 tr\u00ed \u2014 ch\u1eb3ng h\u1ea1n nh\u01b0 k\u00edch th\u01b0\u1edbc pad, v\u1ecb tr\u00ed l\u1ed7 via v\u00e0 h\u01b0\u1edbng \u0111\u1eb7t linh ki\u1ec7n \u2014 nh\u1eb1m gi\u1ea3m thi\u1ec3u r\u1ee7i ro v\u00e0 chi ph\u00ed tr\u01b0\u1edbc khi chuy\u1ec3n b\u1ea3n m\u1ea1ch cho nh\u00e0 cung c\u1ea5p.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf \u0111\u1ec3 thu\u1eadn ti\u1ec7n cho s\u1ea3n xu\u1ea5t: C\u00e1c ph\u01b0\u01a1ng ph\u00e1p hay nh\u1ea5t v\u1ec1 DFM v\u00e0 nh\u1eefng sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p c\u1ea7n tr\u00e1nh<\/h2>\n\n\n\n<p>Thi\u1ebft k\u1ebf h\u01b0\u1edbng t\u1edbi kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t (DFM) l\u00e0 c\u1ea7u n\u1ed1i gi\u1eefa m\u1ed9t s\u01a1 \u0111\u1ed3 m\u1ea1ch th\u00f4ng minh v\u00e0 m\u1ed9t b\u1ea3ng m\u1ea1ch \u0111\u00e1ng tin c\u1eady, ti\u1ebft ki\u1ec7m chi ph\u00ed. Ngay c\u1ea3 khi vi\u1ec7c l\u1ef1a ch\u1ecdn linh ki\u1ec7n, s\u1ed1 l\u1edbp v\u00e0 v\u1eadt li\u1ec7u n\u1ec1n \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh, nh\u1eefng quy\u1ebft \u0111\u1ecbnh b\u1ed1 tr\u00ed nh\u1ecf nh\u1eb7t c\u0169ng c\u00f3 th\u1ec3 bi\u1ebfn m\u1ed9t quy tr\u00ecnh s\u1ea3n xu\u1ea5t su\u00f4n s\u1ebb th\u00e0nh m\u1ed9t chu k\u1ef3 s\u1eeda ch\u1eefa t\u1ed1n k\u00e9m. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p sau \u0111\u00e2y gi\u00fap thi\u1ebft k\u1ebf ph\u00f9 h\u1ee3p v\u1edbi to\u00e0n b\u1ed9 chu\u1ed7i cung \u1ee9ng, \u0111\u1ed3ng th\u1eddi ch\u1ec9 ra nh\u1eefng sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p khi\u1ebfn c\u00e1c k\u1ef9 s\u01b0 b\u1ea5t ng\u1edd.<\/p>\n\n\n\n<p><strong>H\u00e3y b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c thi\u1ebft l\u1eadp c\u00e1c quy t\u1eafc thi\u1ebft k\u1ebf r\u00f5 r\u00e0ng ngay t\u1eeb \u0111\u1ea7u<\/strong> H\u1ea7u h\u1ebft c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t PCB \u0111\u1ec1u c\u00f4ng b\u1ed1 t\u1ec7p Ki\u1ec3m tra Quy t\u1eafc Thi\u1ebft k\u1ebf (DRC) \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh chi\u1ec1u r\u1ed9ng \u0111\u01b0\u1eddng d\u1eabn t\u1ed1i thi\u1ec3u, kho\u1ea3ng c\u00e1ch, v\u00f2ng tr\u00f2n \u0111\u1ed3ng t\u00e2m v\u00e0 dung sai khoan cho m\u1ed9t c\u1ea5u tr\u00fac l\u1edbp c\u1ee5 th\u1ec3. Vi\u1ec7c nh\u1eadp t\u1ec7p n\u00e0y v\u00e0o ph\u1ea7n m\u1ec1m CAD ngay t\u1eeb \u0111\u1ea7u s\u1ebd \u0111\u1ea3m b\u1ea3o b\u1ea3n v\u1ebd b\u1ed1 tr\u00ed n\u1eb1m ho\u00e0n to\u00e0n trong ph\u1ea1m vi c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t \u0111\u01b0\u1ee3c. Khi c\u00e1c quy t\u1eafc n\u00e0y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng ngay t\u1eeb l\u1ea7n \u0111\u1ed5 \u0111\u1ed3ng \u0111\u1ea7u ti\u00ean, nhu c\u1ea7u ch\u1ec9nh s\u1eeda sau n\u00e0y s\u1ebd gi\u1ea3m \u0111\u00e1ng k\u1ec3.<\/p>\n\n\n\n<p><strong>Duy tr\u00ec t\u1ef7 l\u1ec7 \u0111\u1ed3ng tr\u00ean pad \u1ed5n \u0111\u1ecbnh<\/strong> M\u1ed9t sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p l\u00e0 \u0111\u1eb7t c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac c\u00f3 k\u00edch th\u01b0\u1edbc qu\u00e1 nh\u1ecf so v\u1edbi chi\u1ec1u r\u1ed9ng c\u1ee7a \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ed3ng. N\u1ebfu m\u1ed9t \u0111i\u1ec3m ti\u1ebfp x\u00fac 0,3 mm \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn 0,2 mm, v\u00f2ng tr\u00f2n h\u00ecnh v\u00e0nh \u0111ai t\u1ea1o th\u00e0nh c\u00f3 th\u1ec3 nh\u1ecf h\u01a1n m\u1ee9c t\u1ed1i thi\u1ec3u th\u00f4ng th\u01b0\u1eddng l\u00e0 0,1 mm, l\u00e0m t\u0103ng nguy c\u01a1 xu\u1ea5t hi\u1ec7n c\u1ea7u h\u00e0n ho\u1eb7c \u0111\u1ee9t m\u1ea1ch trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p. M\u1ed9t nguy\u00ean t\u1eafc th\u1ef1c ti\u1ec5n l\u00e0 gi\u1eef cho \u0111\u01b0\u1eddng k\u00ednh pad \u00edt nh\u1ea5t g\u1ea5p \u0111\u00f4i chi\u1ec1u r\u1ed9ng \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ed3ng, \u0111i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t kho\u1ea3ng an to\u00e0n v\u1eeba \u0111\u1ee7 cho c\u1ea3 qu\u00e1 tr\u00ecnh khoan l\u1ed7 v\u00e0 d\u00f2ng ch\u1ea3y c\u1ee7a h\u00e0n.<\/p>\n\n\n\n<p><strong>Tr\u00e1nh c\u00e1c g\u00f3c nh\u1ecdn v\u00e0 m\u1eadt \u0111\u1ed9 l\u1ed7 d\u1eabn qu\u00e1 cao<\/strong> C\u00e1c g\u00f3c nh\u1ecdn 45 \u0111\u1ed9 l\u00e0m t\u1eadp trung d\u00f2ng \u0111i\u1ec7n v\u00e0 c\u00f3 th\u1ec3 g\u00e2y ra l\u1ed7i kh\u1eafc, \u0111\u1eb7c bi\u1ec7t l\u00e0 tr\u00ean c\u00e1c b\u1ea3ng m\u1ea1ch c\u00f3 \u0111\u01b0\u1eddng d\u00e2y m\u1ea3nh. Vi\u1ec7c bo tr\u00f2n c\u00e1c g\u00f3c kh\u00f4ng ch\u1ec9 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t \u0111i\u1ec7n m\u00e0 c\u00f2n gi\u00fap qu\u00e1 tr\u00ecnh m\u1ea1 di\u1ec5n ra thu\u1eadn l\u1ee3i h\u01a1n. T\u01b0\u01a1ng t\u1ef1, vi\u1ec7c b\u1ed1 tr\u00ed c\u00e1c l\u1ed7 vias qu\u00e1 s\u00e1t nhau c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng rung l\u1eafc khi khoan, bong tr\u00f3c l\u1edbp \u0111\u1ed3ng ho\u1eb7c d\u00f2ng ch\u1ea3y epoxy kh\u00f4ng \u0111\u1ee7. M\u1ed9t nguy\u00ean t\u1eafc chung l\u00e0 n\u00ean ch\u1eeba kho\u1ea3ng c\u00e1ch \u00edt nh\u1ea5t g\u1ea5p \u0111\u00f4i \u0111\u01b0\u1eddng k\u00ednh m\u0169i khoan gi\u1eefa c\u00e1c l\u1ed7 vias li\u1ec1n k\u1ec1; kho\u1ea3ng tr\u1ed1ng n\u00e0y c\u0169ng gi\u00fap \u0111\u1ed9i ng\u0169 s\u1ea3n xu\u1ea5t \u0111\u1eb7t l\u1edbp ph\u1ee7 ch\u1ed1ng h\u00e0n ch\u00ednh x\u00e1c h\u01a1n.<\/p>\n\n\n\n<p><strong>K\u1ebf ho\u1ea1ch gi\u1ea3m nhi\u1ec7t v\u00e0 t\u1ea3n nhi\u1ec7t<\/strong> C\u00e1c linh ki\u1ec7n t\u1ea3n nhi\u1ec7t \u2014 ch\u1eb3ng h\u1ea1n nh\u01b0 MOSFET c\u00f4ng su\u1ea5t ho\u1eb7c cu\u1ed9n c\u1ea3m d\u00f2ng cao \u2014 \u0111\u00f2i h\u1ecfi ph\u1ea3i c\u00f3 c\u00e1c v\u00f9ng \u0111\u1ed5 \u0111\u1ed3ng d\u00e0y d\u1eb7n k\u00e8m theo c\u00e1c m\u1eabu t\u1ea3n nhi\u1ec7t gi\u00fap c\u00e2n b\u1eb1ng gi\u1eefa \u0111i\u1ec7n tr\u1edf v\u00e0 kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t. Vi\u1ec7c c\u00e1ch ly qu\u00e1 m\u1ee9c m\u1ed9t pad b\u1eb1ng m\u1eabu nan m\u1ecfng c\u00f3 th\u1ec3 tr\u00f4ng g\u1ecdn g\u00e0ng tr\u00ean m\u00e0n h\u00ecnh nh\u01b0ng c\u00f3 th\u1ec3 khi\u1ebfn linh ki\u1ec7n qu\u00e1 nhi\u1ec7t trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng. C\u00e1c nh\u00e0 thi\u1ebft k\u1ebf n\u00ean \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u201cnan d\u00e0y\u201d: c\u00e1c nan r\u1ed9ng h\u01a1n (th\u01b0\u1eddng t\u1eeb 0,3 mm tr\u1edf l\u00ean) nh\u01b0ng v\u1eabn tu\u00e2n th\u1ee7 c\u00e1c quy t\u1eafc kho\u1ea3ng c\u00e1ch t\u1ed1i thi\u1ec3u c\u1ee7a nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<p><strong>\u0110\u01a1n gi\u1ea3n h\u00f3a b\u1ea3n in l\u1ee5a v\u00e0 l\u1edbp ch\u1ed1ng h\u00e0n<\/strong> M\u1ed9t b\u1ea3n in l\u1ee5a l\u1ed9n x\u1ed9n c\u00f3 th\u1ec3 c\u1ea3n tr\u1edf qu\u00e1 tr\u00ecnh ki\u1ec3m tra quang h\u1ecdc v\u00e0 che khu\u1ea5t c\u00e1c d\u1ea5u hi\u1ec7u quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p. H\u01a1n n\u1eefa, v\u0103n b\u1ea3n ho\u1eb7c h\u00ecnh \u1ea3nh \u0111\u01b0\u1ee3c \u0111\u1eb7t qu\u00e1 g\u1ea7n c\u00e1c m\u00e9p \u0111\u1ed3ng c\u00f3 th\u1ec3 g\u00e2y ra c\u00e1c l\u1ed7 h\u1edf kh\u00f4ng mong mu\u1ed1n tr\u00ean l\u1edbp ph\u1ee7 ch\u1ed1ng h\u00e0n. Vi\u1ec7c duy tr\u00ec kho\u1ea3ng c\u00e1ch t\u1ed1i thi\u1ec3u 0,2 mm gi\u1eefa c\u00e1c y\u1ebfu t\u1ed1 tr\u00ean b\u1ea3n in l\u1ee5a v\u00e0 b\u1ea5t k\u1ef3 chi ti\u1ebft \u0111\u1ed3ng n\u00e0o s\u1ebd gi\u00fap gi\u1ea3m thi\u1ec3u r\u1ee7i ro v\u00f4 t\u00ecnh l\u00e0m m\u1ea5t l\u1edbp ph\u1ee7 ch\u1ed1ng h\u00e0n. Nguy\u00ean t\u1eafc n\u00e0y c\u0169ng \u00e1p d\u1ee5ng cho c\u00e1c l\u1ed7 h\u1edf tr\u00ean l\u1edbp ph\u1ee7 ch\u1ed1ng h\u00e0n; ch\u1ec9 n\u00ean \u0111\u1ec3 l\u1ed9 c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac v\u00e0 c\u00e1c v\u00f9ng \u0111\u1ed3ng li\u00ean quan \u0111\u1ebfn \u0111i\u1ec3m ti\u1ebfp x\u00fac khi th\u1ef1c s\u1ef1 c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<p><strong>Ki\u1ec3m tra s\u1edbm xem c\u00f3 s\u1ef1 kh\u00f4ng kh\u1edbp gi\u1eefa linh ki\u1ec7n v\u00e0 v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t hay kh\u00f4ng<\/strong> C\u00e1c b\u1ea3n v\u1ebd ch\u00e2n linh ki\u1ec7n ti\u00eau chu\u1ea9n r\u1ea5t h\u1eefu \u00edch, nh\u01b0ng ch\u00fang kh\u00f4ng ph\u1ea3i l\u00e0 gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p cho m\u1ecdi tr\u01b0\u1eddng h\u1ee3p. M\u1ed9t sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p l\u00e0 s\u1eed d\u1ee5ng k\u00edch th\u01b0\u1edbc ch\u00e2n linh ki\u1ec7n chung chung cho m\u1ed9t linh ki\u1ec7n th\u1ef1c t\u1ebf c\u1ea7n di\u1ec7n t\u00edch \u0111\u1ed3ng l\u1edbn h\u01a1n ho\u1eb7c nh\u1ecf h\u01a1n. S\u1ef1 kh\u00f4ng kh\u1edbp n\u00e0y th\u01b0\u1eddng ch\u1ec9 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n sau khi nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t g\u1eedi th\u00f4ng b\u00e1o \u201cl\u1ed7i k\u00edch th\u01b0\u1edbc ch\u00e2n linh ki\u1ec7n\u201d, d\u1eabn \u0111\u1ebfn s\u1ef1 ch\u1eadm tr\u1ec5. Vi\u1ec7c \u0111\u1ed1i chi\u1ebfu b\u1ea3ng d\u1eef li\u1ec7u k\u1ef9 thu\u1eadt c\u1ee7a linh ki\u1ec7n v\u1edbi b\u1ea3n v\u1ebd ch\u00e2n linh ki\u1ec7n trong th\u01b0 vi\u1ec7n tr\u01b0\u1edbc khi b\u1ed1 tr\u00ed m\u1ea1ch s\u1ebd gi\u00fap tr\u00e1nh \u0111\u01b0\u1ee3c t\u00ecnh tr\u1ea1ng ph\u1ea3i g\u1ea5p r\u00fat kh\u1eafc ph\u1ee5c v\u00e0o ph\u00fat ch\u00f3t.<\/p>\n\n\n\n<p><strong>Ki\u1ec3m tra t\u00ednh kh\u1ea3 thi c\u1ee7a thi\u1ebft k\u1ebf d\u1ef1a tr\u00ean danh s\u00e1ch ki\u1ec3m tra DFM c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t<\/strong> Nhi\u1ec1u nh\u00e0 cung c\u1ea5p cung c\u1ea5p danh s\u00e1ch ki\u1ec3m tra DFM bao g\u1ed3m c\u00e1c v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p nh\u01b0\u202f<em>\u0111\u01b0\u1eddng k\u00ednh m\u0169i khoan t\u1ed1i thi\u1ec3u<\/em>,\u202f<em>qua l\u1ec1u<\/em>,\u202f<em>kho\u1ea3ng h\u1edf gi\u1eefa c\u00e1c b\u1ed9 ph\u1eadn<\/em>, v\u00e0\u202f<em>c\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 vi\u1ec7c chia th\u00e0nh c\u00e1c t\u1ea5m<\/em>. Vi\u1ec7c ki\u1ec3m tra danh s\u00e1ch n\u00e0y tr\u01b0\u1edbc khi \u0111\u1eb7t h\u00e0ng m\u1eabu th\u1eed s\u1ebd gi\u00fap ph\u00e1t hi\u1ec7n nh\u1eefng v\u1ea5n \u0111\u1ec1 m\u00e0 c\u00e1c c\u00f4ng c\u1ee5 DRC t\u1ef1 \u0111\u1ed9ng c\u00f3 th\u1ec3 b\u1ecf s\u00f3t, ch\u1eb3ng h\u1ea1n nh\u01b0 kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c b\u1ea3ng m\u1ea1ch trong quy tr\u00ecnh h\u00e0n s\u00f3ng so v\u1edbi quy tr\u00ecnh h\u00e0n ch\u1ecdn l\u1ecdc.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><em>\u201cM\u1ed9t cu\u1ed9c \u0111\u00e1nh gi\u00e1 DFM \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c b\u00e0i b\u1ea3n c\u00f3 gi\u00e1 tr\u1ecb h\u01a1n b\u1ea5t k\u1ef3 m\u00f4 ph\u1ecfng n\u00e0o; n\u00f3 gi\u00fap ph\u00e1t hi\u1ec7n nh\u1eefng v\u1ea5n \u0111\u1ec1 th\u1ef1c t\u1ebf m\u00e0 ph\u1ea7n m\u1ec1m kh\u00f4ng th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c.\u201d<\/em> \u2013 Qu\u1ea3n l\u00fd s\u1ea3n xu\u1ea5t PCB c\u00f3 kinh nghi\u1ec7m<\/p>\n<\/blockquote>\n\n\n\n<p><strong>Tr\u00e1nh ph\u1ea3i l\u00e0m l\u1ea1i: Chi ph\u00ed c\u1ee7a vi\u1ec7c b\u1ecf qua DFM<\/strong> Khi m\u1ed9t thi\u1ebft k\u1ebf vi ph\u1ea1m quy t\u1eafc s\u1ea3n xu\u1ea5t, nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 t\u1eeb ch\u1ed1i th\u1eb3ng th\u1eebng t\u1ec7p thi\u1ebft k\u1ebf ho\u1eb7c c\u1ed1 g\u1eafng t\u00ecm gi\u1ea3i ph\u00e1p thay th\u1ebf, \u0111i\u1ec1u n\u00e0y s\u1ebd l\u00e0m t\u0103ng th\u1eddi gian s\u1ea3n xu\u1ea5t v\u00e0 chi ph\u00ed. V\u00ed d\u1ee5, m\u1ed9t b\u1ea3ng m\u1ea1ch c\u00f3 kho\u1ea3ng c\u00e1ch 0,05 mm tr\u00ean c\u1ea5u tr\u00fac 4 l\u1edbp FR-4 c\u00f3 th\u1ec3 bu\u1ed9c nh\u00e0 m\u00e1y ph\u1ea3i chuy\u1ec3n sang quy tr\u00ecnh s\u1ea3n xu\u1ea5t c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao h\u01a1n, d\u1eabn \u0111\u1ebfn chi ph\u00ed ph\u00e1t sinh m\u00e0 l\u1ebd ra c\u00f3 th\u1ec3 tr\u00e1nh \u0111\u01b0\u1ee3c ch\u1ec9 b\u1eb1ng m\u1ed9t s\u1ef1 \u0111i\u1ec1u ch\u1ec9nh thi\u1ebft k\u1ebf nh\u1ecf. Tr\u00ean th\u1ef1c t\u1ebf, chi ph\u00ed ph\u00e1t sinh do thi\u1ebft k\u1ebf l\u1ea1i v\u00e0 th\u1eddi gian \u0111\u01b0a s\u1ea3n ph\u1ea9m ra th\u1ecb tr\u01b0\u1eddng b\u1ecb tr\u00ec ho\u00e3n v\u01b0\u1ee3t xa n\u1ed7 l\u1ef1c nh\u1ecf c\u1ea7n thi\u1ebft \u0111\u1ec3 tu\u00e2n th\u1ee7 c\u00e1c h\u01b0\u1edbng d\u1eabn DFM ngay t\u1eeb \u0111\u1ea7u.<\/p>\n\n\n\n<p><strong>Chuy\u1ec3n sang b\u01b0\u1edbc ti\u1ebfp theo<\/strong> Sau khi \u0111\u00e3 ho\u00e0n thi\u1ec7n b\u1ed1 c\u1ee5c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t, b\u1ea3n thi\u1ebft k\u1ebf hi\u1ec7n \u0111\u00e3 s\u1eb5n s\u00e0ng cho quy tr\u00ecnh l\u1ef1a ch\u1ecdn c\u00f3 h\u1ec7 th\u1ed1ng. Ph\u1ea7n ti\u1ebfp theo s\u1ebd h\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc c\u1ee5 th\u1ec3 \u2014 t\u1eeb vi\u1ec7c r\u00e0 so\u00e1t c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt cu\u1ed1i c\u00f9ng \u0111\u1ebfn vi\u1ec7c x\u00e1c nh\u1eadn n\u0103ng l\u1ef1c c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn \u2014 nh\u1eb1m \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea3n thi\u1ebft k\u1ebf \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a s\u1ebd mang l\u1ea1i m\u1ed9t qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t su\u00f4n s\u1ebb.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c1p d\u1ee5ng quy tr\u00ecnh l\u1ef1a ch\u1ecdn PCB t\u1eebng b\u01b0\u1edbc: T\u1eeb vi\u1ec7c r\u00e0 so\u00e1t th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111\u1ebfn x\u00e1c nh\u1eadn nh\u00e0 cung c\u1ea5p<\/h2>\n\n\n\n<p>M\u1ed9t quy tr\u00ecnh l\u00e0m vi\u1ec7c r\u00f5 r\u00e0ng v\u00e0 c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i s\u1ebd bi\u1ebfn m\u1ed9t b\u1ed9 y\u00eau c\u1ea7u m\u01a1 h\u1ed3 th\u00e0nh m\u1ed9t b\u1ea3ng m\u1ea1ch c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t \u0111\u01b0\u1ee3c, \u0111\u01b0\u1ee3c giao \u0111\u00fang h\u1ea1n v\u00e0 trong ph\u1ea1m vi ng\u00e2n s\u00e1ch. Sau khi ho\u00e0n thi\u1ec7n thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t, b\u01b0\u1edbc ti\u1ebfp theo h\u1ee3p l\u00fd l\u00e0 ch\u00ednh th\u1ee9c h\u00f3a quy tr\u00ecnh l\u1ef1a ch\u1ecdn. C\u00e1c b\u01b0\u1edbc sau \u0111\u00e2y s\u1ebd h\u01b0\u1edbng d\u1eabn c\u00e1c k\u1ef9 s\u01b0 t\u1eeb th\u1eddi \u0111i\u1ec3m xem x\u00e9t b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt cho \u0111\u1ebfn khi nh\u00e0 cung c\u1ea5p ch\u00ednh th\u1ee9c x\u00e1c nh\u1eadn \u0111\u01a1n h\u00e0ng.<\/p>\n\n\n\n<p><strong>1. Ki\u1ec3m tra danh s\u00e1ch ki\u1ec3m tra th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/strong> Tr\u01b0\u1edbc khi li\u00ean h\u1ec7 v\u1edbi b\u1ea5t k\u1ef3 nh\u00e0 cung c\u1ea5p n\u00e0o, h\u00e3y ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi th\u00f4ng s\u1ed1 thi\u1ebft k\u1ebf \u0111\u1ec1u c\u00f3 gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c ghi ch\u00e9p r\u00f5 r\u00e0ng: \u0111i\u1ec7n \u00e1p ho\u1ea1t \u0111\u1ed9ng, d\u00f2ng \u0111i\u1ec7n t\u1ed1i \u0111a, k\u00edch th\u01b0\u1edbc b\u1ea3ng m\u1ea1ch, s\u1ed1 l\u1edbp, tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ed3ng, b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n v\u00e0 c\u00e1c y\u00eau c\u1ea7u ki\u1ec3m tra. Vi\u1ec7c r\u00e0 so\u00e1t nhanh tr\u00ean b\u1ea3ng t\u00ednh s\u1ebd gi\u00fap ph\u00e1t hi\u1ec7n c\u00e1c m\u1ee5c c\u00f2n thi\u1ebfu, v\u1ed1n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 ch\u00eanh l\u1ec7ch trong b\u00e1o gi\u00e1 sau n\u00e0y.<\/p>\n\n\n\n<p><strong>2. Ph\u00f9 h\u1ee3p c\u00e1c y\u00eau c\u1ea7u v\u1edbi c\u00e1c d\u00f2ng s\u1ea3n ph\u1ea9m PCB ti\u00eau chu\u1ea9n<\/strong> H\u1ea7u h\u1ebft c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec1u ph\u00e2n lo\u1ea1i b\u1ea3ng m\u1ea1ch th\u00e0nh c\u00e1c nh\u00f3m nh\u01b0 \u201cFR-4 ti\u00eau chu\u1ea9n, \u0111\u1ed3ng 1 oz\u201d, \u201cRogers t\u1ea7n s\u1ed1 cao, \u0111\u1ed3ng 2 oz\u201d ho\u1eb7c \u201cpolyimide d\u1ebbo\u201d. H\u00e3y l\u1ef1a ch\u1ecdn nh\u00f3m s\u1ea3n ph\u1ea9m ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi y\u00eau c\u1ea7u c\u1ee7a d\u1ef1 \u00e1n \u0111\u1ec3 r\u00fat ng\u1eafn th\u1eddi gian s\u1ea3n xu\u1ea5t. V\u00ed d\u1ee5, n\u1ebfu thi\u1ebft k\u1ebf y\u00eau c\u1ea7u \u0111\u1ed9 d\u00e0y 0,5 mm v\u00e0 c\u1ea5u tr\u00fac 4 l\u1edbp, s\u1ea3n ph\u1ea9m FR-4 4 l\u1edbp ti\u00eau chu\u1ea9n th\u01b0\u1eddng s\u1ebd \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u n\u00e0y m\u00e0 kh\u00f4ng c\u1ea7n \u0111\u1eb7t h\u00e0ng \u0111\u1eb7c bi\u1ec7t.<\/p>\n\n\n\n<p><strong>3. L\u1eadp danh s\u00e1ch r\u00fat g\u1ecdn c\u00e1c nh\u00e0 cung c\u1ea5p \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n<\/strong> S\u1eed d\u1ee5ng c\u00e1c ti\u00eau ch\u00ed quan tr\u1ecdng \u0111\u1ed1i v\u1edbi d\u1ef1 \u00e1n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kh\u1ea3 n\u0103ng \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee7a d\u00f2ng PCB \u0111\u00e3 ch\u1ecdn (v\u00ed d\u1ee5: kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t \u0111\u01b0\u1eddng d\u1eabn\/kho\u1ea3ng c\u00e1ch 6 mil).<\/li>\n\n\n\n<li>C\u00f3 th\u00e0nh t\u00edch \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh trong vi\u1ec7c \u0111\u00e1p \u1ee9ng ph\u1ea1m vi kh\u1ed1i l\u01b0\u1ee3ng y\u00eau c\u1ea7u.<\/li>\n\n\n\n<li>V\u1ecb tr\u00ed \u0111\u1ecba l\u00fd so v\u1edbi nh\u00e0 m\u00e1y l\u1eafp r\u00e1p (\u0111\u1ec3 gi\u1ea3m thi\u1ec3u s\u1ef1 ch\u1eadm tr\u1ec5 trong v\u1eadn chuy\u1ec3n).<\/li>\n\n\n\n<li>C\u00f3 s\u1eb5n c\u00e1c c\u00f4ng c\u1ee5 b\u00e1o gi\u00e1 tr\u1ef1c tuy\u1ebfn \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c v\u00f2ng l\u1eb7p nhanh ch\u00f3ng.<\/li>\n<\/ul>\n\n\n\n<p>M\u1ed9t cu\u1ed9c t\u00ecm ki\u1ebfm nhanh tr\u00ean m\u1ea1ng k\u1ebft h\u1ee3p v\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u nh\u00e0 cung c\u1ea5p n\u1ed9i b\u1ed9 th\u01b0\u1eddng cho ra t\u1eeb ba \u0111\u1ebfn n\u0103m \u1ee9ng vi\u00ean ti\u1ec1m n\u0103ng.<\/p>\n\n\n\n<p><strong>4. Y\u00eau c\u1ea7u b\u00e1o gi\u00e1 chi ti\u1ebft<\/strong> Khi y\u00eau c\u1ea7u b\u00e1o gi\u00e1, vui l\u00f2ng \u0111\u00ednh k\u00e8m b\u1ea3n t\u00f3m t\u1eaft ng\u1eafn g\u1ecdn bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u00e1c t\u1ec7p Gerber (ho\u1eb7c g\u00f3i ODB++) v\u00e0 B\u1ea3ng danh m\u1ee5c v\u1eadt li\u1ec7u (BOM).<\/li>\n\n\n\n<li>Y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 v\u1ec1 b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n, m\u00e0u l\u1edbp ph\u1ee7 ch\u1ed1ng h\u00e0n v\u00e0 c\u00e1c y\u00eau c\u1ea7u ki\u1ec3m tra.<\/li>\n\n\n\n<li>Kho\u1ea3ng th\u1eddi gian giao h\u00e0ng mong mu\u1ed1n v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n tu\u00e2n th\u1ee7 (v\u00ed d\u1ee5: RoHS).<\/li>\n<\/ul>\n\n\n\n<p>Y\u00eau c\u1ea7u m\u1ed7i nh\u00e0 cung c\u1ea5p ph\u00e2n t\u00edch chi ti\u1ebft chi ph\u00ed th\u00e0nh c\u00e1c kho\u1ea3n: nguy\u00ean v\u1eadt li\u1ec7u, gia c\u00f4ng, ki\u1ec3m tra v\u00e0 d\u1ee5ng c\u1ee5. S\u1ef1 minh b\u1ea1ch n\u00e0y gi\u00fap vi\u1ec7c so s\u00e1nh c\u00e1c \u0111\u1ec1 xu\u1ea5t tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n, kh\u00f4ng ch\u1ec9 d\u1ef1a tr\u00ean m\u1ee9c gi\u00e1 ni\u00eam y\u1ebft.<\/p>\n\n\n\n<p><strong>5. \u0110\u00e1nh gi\u00e1 c\u00e1c b\u00e1o gi\u00e1 d\u1ef1a tr\u00ean ma tr\u1eadn ra quy\u1ebft \u0111\u1ecbnh<\/strong> T\u1ea1o m\u1ed9t ma tr\u1eadn \u0111\u01a1n gi\u1ea3n v\u1edbi c\u00e1c ti\u00eau ch\u00ed \u0111\u01b0\u1ee3c g\u00e1n tr\u1ecdng s\u1ed1 nh\u01b0 chi ph\u00ed (30\u202f%), th\u1eddi gian giao h\u00e0ng (25\u202f%), ch\u1ee9ng nh\u1eadn ch\u1ea5t l\u01b0\u1ee3ng (20\u202f%) v\u00e0 kh\u1ea3 n\u0103ng ph\u1ea3n h\u1ed3i trong giao ti\u1ebfp (15\u202f%). G\u00e1n \u0111i\u1ec3m cho t\u1eebng nh\u00e0 cung c\u1ea5p v\u00e0 t\u00ednh t\u1ed5ng \u0111i\u1ec3m. Ph\u01b0\u01a1ng ph\u00e1p ma tr\u1eadn gi\u00fap lo\u1ea1i b\u1ecf s\u1ef1 thi\u00ean v\u1ecb v\u00e0 \u0111\u01b0a ra l\u1ef1a ch\u1ecdn t\u1ed5ng th\u1ec3 t\u1ed1t nh\u1ea5t, ch\u1ee9 kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 l\u1ef1a ch\u1ecdn r\u1ebb nh\u1ea5t.<\/p>\n\n\n\n<p><strong>6. Th\u1ef1c hi\u1ec7n \u0111\u00e1nh gi\u00e1 r\u1ee7i ro<\/strong> Ngay c\u1ea3 nh\u00e0 cung c\u1ea5p c\u00f3 \u0111i\u1ec3m s\u1ed1 cao nh\u1ea5t c\u0169ng c\u00f3 th\u1ec3 ti\u1ec1m \u1ea9n nh\u1eefng r\u1ee7i ro. H\u00e3y xem x\u00e9t c\u00e1c \u0111i\u1ec3m sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nh\u1eefng h\u1ea1n ch\u1ebf v\u1ec1 n\u0103ng l\u1ef1c s\u1ea3n xu\u1ea5t g\u1ea7n \u0111\u00e2y ho\u1eb7c th\u00f4ng b\u00e1o v\u1ec1 \u0111\u01a1n h\u00e0ng b\u1ecb ho\u00e3n.<\/li>\n\n\n\n<li>L\u1ecbch s\u1eed c\u00e1c tr\u01b0\u1eddng h\u1ee3p kh\u00f4ng tu\u00e2n th\u1ee7 trong c\u00e1c d\u1ef1 \u00e1n t\u01b0\u01a1ng t\u1ef1.<\/li>\n\n\n\n<li>C\u00f3 s\u1eb5n m\u1ed9t l\u1ed9 tr\u00ecnh x\u1eed l\u00fd theo c\u1ea5p b\u1eadc r\u00f5 r\u00e0ng d\u00e0nh cho c\u00e1c v\u1ea5n \u0111\u1ec1 kh\u1ea9n c\u1ea5p.<\/li>\n<\/ul>\n\n\n\n<p>N\u1ebfu nh\u00e0 cung c\u1ea5p n\u00e0o c\u00f3 d\u1ea5u hi\u1ec7u \u0111\u00e1ng ng\u1edd, h\u00e3y xem x\u00e9t l\u1ef1a ch\u1ecdn m\u1ed9t nh\u00e0 cung c\u1ea5p d\u1ef1 ph\u00f2ng trong danh s\u00e1ch r\u00fat g\u1ecdn.<\/p>\n\n\n\n<p><strong>7. X\u00e1c nh\u1eadn g\u00f3i thi\u1ebft k\u1ebf cu\u1ed1i c\u00f9ng<\/strong> Tr\u01b0\u1edbc khi nh\u00e0 cung c\u1ea5p k\u00fd \u0111\u01a1n \u0111\u1eb7t h\u00e0ng s\u1ea3n xu\u1ea5t, h\u00e3y g\u1eedi b\u1ed9 t\u00e0i li\u1ec7u \u0111\u00e1nh gi\u00e1 \u201cthi\u1ebft k\u1ebf \u0111\u1ec3 s\u1ea3n xu\u1ea5t\u201d (DFM) cu\u1ed1i c\u00f9ng. Bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u00e3 c\u1eadp nh\u1eadt c\u00e1c t\u1ec7p Gerber v\u1edbi nh\u1eefng \u0111i\u1ec1u ch\u1ec9nh v\u00e0o ph\u00fat ch\u00f3t.<\/li>\n\n\n\n<li>B\u1ea3n v\u1ebd chi ti\u1ebft v\u1ec1 k\u00edch th\u01b0\u1edbc b\u1ea3ng m\u1ea1ch v\u00e0 c\u00e1c l\u1ed7 l\u1eafp \u0111\u1eb7t.<\/li>\n\n\n\n<li>M\u1ed9t danh s\u00e1ch ki\u1ec3m tra \u0111\u00e3 \u0111\u01b0\u1ee3c k\u00fd x\u00e1c nh\u1eadn r\u1eb1ng t\u1ea5t c\u1ea3 c\u00e1c gi\u1edbi h\u1ea1n dung sai, kho\u1ea3ng c\u00e1ch an to\u00e0n v\u00e0 y\u00eau c\u1ea7u ki\u1ec3m tra \u0111\u00e3 \u0111\u01b0\u1ee3c r\u00e0 so\u00e1t.<\/li>\n<\/ul>\n\n\n\n<p>M\u1ed9t cu\u1ed9c trao \u0111\u1ed5i email ng\u1eafn g\u1ecdn \u0111\u1ec3 x\u00e1c nh\u1eadn \u0111\u00e3 nh\u1eadn \u0111\u01b0\u1ee3c g\u00f3i h\u00e0ng v\u00e0 ng\u00e0y d\u1ef1 ki\u1ebfn b\u1eaft \u0111\u1ea7u s\u1ea3n xu\u1ea5t s\u1ebd ch\u00ednh th\u1ee9c ho\u00e0n t\u1ea5t th\u1ecfa thu\u1eadn.<\/p>\n\n\n\n<p><strong>8. \u0110\u1ea3m b\u1ea3o c\u00f3 \u0111\u01a1n \u0111\u1eb7t h\u00e0ng v\u00e0 theo d\u00f5i ti\u1ebfn \u0111\u1ed9<\/strong> T\u1ea1o \u0111\u01a1n \u0111\u1eb7t h\u00e0ng trong \u0111\u00f3 n\u00eau r\u00f5 gi\u00e1 \u0111\u00e3 b\u00e1o, th\u1eddi gian giao h\u00e0ng \u0111\u00e3 th\u1ecfa thu\u1eadn v\u00e0 b\u1ea5t k\u1ef3 h\u01b0\u1edbng d\u1eabn x\u1eed l\u00fd \u0111\u1eb7c bi\u1ec7t n\u00e0o. H\u1ea7u h\u1ebft c\u00e1c nh\u00e0 cung c\u1ea5p \u0111\u1ec1u cung c\u1ea5p m\u1ed9t c\u1ed5ng th\u00f4ng tin tr\u1ef1c tuy\u1ebfn \u0111\u1ec3 theo d\u00f5i t\u00ecnh tr\u1ea1ng \u0111\u01a1n h\u00e0ng. Vi\u1ec7c thi\u1ebft l\u1eadp c\u00e1c th\u00f4ng b\u00e1o t\u1ef1 \u0111\u1ed9ng cho c\u00e1c m\u1ed1c quan tr\u1ecdng \u2014 ch\u1eb3ng h\u1ea1n nh\u01b0 \u201cho\u00e0n th\u00e0nh gia c\u00f4ng\u201d ho\u1eb7c \u201c\u0111\u00e3 v\u01b0\u1ee3t qua l\u1ea7n ki\u1ec3m tra \u0111i\u1ec7n \u0111\u1ea7u ti\u00ean\u201d \u2014 s\u1ebd gi\u00fap ng\u01b0\u1eddi qu\u1ea3n l\u00fd d\u1ef1 \u00e1n ch\u1ee7 \u0111\u1ed9ng ph\u00f2ng ng\u1eeba c\u00e1c s\u1ef1 ch\u1eadm tr\u1ec5 c\u00f3 th\u1ec3 x\u1ea3y ra.<\/p>\n\n\n\n<p><strong>9. Ti\u1ebfn h\u00e0nh \u0111\u00e1nh gi\u00e1 nghi\u1ec7m thu cu\u1ed1i c\u00f9ng<\/strong> Khi c\u00e1c bo m\u1ea1ch \u0111\u01b0\u1ee3c giao \u0111\u1ebfn, h\u00e3y ti\u1ebfn h\u00e0nh ki\u1ec3m tra b\u1eb1ng m\u1eaft th\u01b0\u1eddng, x\u00e1c minh k\u00edch th\u01b0\u1edbc b\u1eb1ng th\u01b0\u1edbc k\u1eb9p v\u00e0 th\u1ef1c hi\u1ec7n ki\u1ec3m tra \u0111i\u1ec7n c\u01a1 b\u1ea3n (\u0111\u1ed9 li\u00ean t\u1ee5c, c\u00e1ch \u0111i\u1ec7n). Ghi ch\u00e9p l\u1ea1i m\u1ecdi sai l\u1ec7ch v\u00e0 li\u00ean h\u1ec7 ngay v\u1edbi nh\u00e0 cung c\u1ea5p. M\u1ed9t quy tr\u00ecnh l\u00e0m vi\u1ec7c \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c ch\u1eb7t ch\u1ebd s\u1ebd \u0111\u1ea3m b\u1ea3o m\u1ecdi v\u1ea5n \u0111\u1ec1 \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft tr\u01b0\u1edbc khi c\u00e1c bo m\u1ea1ch \u0111\u01b0\u1ee3c chuy\u1ec3n sang giai \u0111o\u1ea1n l\u1eafp r\u00e1p, t\u1eeb \u0111\u00f3 b\u1ea3o v\u1ec7 ti\u1ebfn \u0111\u1ed9 c\u1ee7a c\u00e1c c\u00f4ng \u0111o\u1ea1n ti\u1ebfp theo.<\/p>\n\n\n\n<p>B\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 ch\u00edn b\u01b0\u1edbc n\u00e0y, c\u00e1c k\u1ef9 s\u01b0 s\u1ebd bi\u1ebfn m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt th\u00e0nh m\u1ed9t quy tr\u00ecnh mua s\u1eafm \u0111\u00e1ng tin c\u1eady. Quy tr\u00ecnh l\u00e0m vi\u1ec7c n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap t\u0103ng c\u01b0\u1eddng s\u1ef1 tin t\u01b0\u1edfng v\u00e0o b\u1ea3ng m\u1ea1ch in (PCB) \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn m\u00e0 c\u00f2n x\u00e2y d\u1ef1ng m\u1ed1i quan h\u1ec7 b\u1ec1n v\u1eefng v\u1edbi c\u00e1c nh\u00e0 cung c\u1ea5p \u2014 t\u1ea1o ti\u1ec1n \u0111\u1ec1 cho vi\u1ec7c b\u00e0n giao c\u00f4ng vi\u1ec7c su\u00f4n s\u1ebb h\u01a1n trong c\u00e1c d\u1ef1 \u00e1n t\u01b0\u01a1ng lai.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>C\u00e1c lo\u1ea1i v\u00e0 v\u1eadt li\u1ec7u PCB ch\u00ednh l\u00e0 g\u00ec, v\u00e0 t\u1ea1i sao ch\u00fang l\u1ea1i quan tr\u1ecdng \u0111\u1ed1i v\u1edbi d\u1ef1 \u00e1n c\u1ee7a t\u00f4i?<\/strong>Nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 PCB bao g\u1ed3m c\u00e1c lo\u1ea1i (m\u1ed9t m\u1eb7t, hai m\u1eb7t, nhi\u1ec1u l\u1edbp), v\u1eadt li\u1ec7u n\u1ec1n (FR-4, Rogers, polyimide) v\u00e0 c\u00e1ch c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t \u0111i\u1ec7n v\u00e0 chi ph\u00ed.<\/li>\n\n\n\n<li><strong>C\u00e1c y\u1ebfu t\u1ed1 v\u1ec1 c\u00f4ng su\u1ea5t, k\u00edch th\u01b0\u1edbc v\u00e0 c\u00e1c h\u1ea1n ch\u1ebf v\u1ec1 m\u00f4i tr\u01b0\u1eddng c\u1ee7a t\u00f4i s\u1ebd \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n nh\u01b0 th\u1ebf n\u00e0o trong c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a b\u1ea3ng m\u1ea1ch in (PCB)?<\/strong>C\u00e1c y\u00eau c\u1ea7u c\u1ee7a d\u1ef1 \u00e1n nh\u01b0 c\u00f4ng su\u1ea5t, k\u00edch th\u01b0\u1edbc, t\u1ea7n s\u1ed1 v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng quy\u1ebft \u0111\u1ecbnh s\u1ed1 l\u1edbp, chi\u1ec1u r\u1ed9ng \u0111\u01b0\u1eddng d\u1eabn v\u00e0 l\u01b0\u1ee3ng \u0111\u1ed3ng, t\u1eeb \u0111\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady v\u00e0 chi ph\u00ed.<\/li>\n\n\n\n<li><strong>Khi n\u00e0o t\u00f4i n\u00ean ch\u1ecdn lo\u1ea1i ch\u1ea5t n\u1ec1n ho\u1eb7c \u0111\u1ed9 d\u00e0y \u0111\u1ed3ng c\u1ee5 th\u1ec3 cho thi\u1ebft k\u1ebf c\u1ee7a m\u00ecnh?<\/strong>Vi\u1ec7c l\u1ef1a ch\u1ecdn ch\u1ea5t n\u1ec1n v\u00e0 \u0111\u1ed9 d\u00e0y \u0111\u1ed3ng ph\u00f9 h\u1ee3p s\u1ebd gi\u00fap c\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ed9 b\u1ec1n v\u00e0 ng\u00e2n s\u00e1ch; \u0111\u1ed3ng d\u00e0y h\u01a1n gi\u00fap c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng d\u1eabn \u0111i\u1ec7n, trong khi ch\u1ea5t n\u1ec1n t\u1ea7n s\u1ed1 cao gi\u00fap gi\u1ea3m t\u1ed5n th\u1ea5t.<\/li>\n\n\n\n<li><strong>T\u00f4i n\u00ean \u00e1p d\u1ee5ng nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p hay nh\u1ea5t v\u1ec1 DFM n\u00e0o \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t PCB di\u1ec5n ra su\u00f4n s\u1ebb v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed?<\/strong>C\u00e1c ph\u01b0\u01a1ng ph\u00e1p thi\u1ebft k\u1ebf h\u01b0\u1edbng t\u1edbi kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t (DFM) nh\u01b0 kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng m\u1ea1ch ph\u00f9 h\u1ee3p, k\u00edch th\u01b0\u1edbc l\u1ed7 khoan ti\u00eau chu\u1ea9n v\u00e0 \u0111\u1ecbnh ngh\u0129a r\u00f5 r\u00e0ng v\u1ec1 l\u1edbp ph\u1ee7 ch\u1ed1ng h\u00e0n gi\u00fap tr\u00e1nh \u0111\u01b0\u1ee3c c\u00e1c c\u00f4ng \u0111o\u1ea1n s\u1eeda ch\u1eefa t\u1ed1n k\u00e9m v\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t s\u1ea3n xu\u1ea5t.<\/li>\n<\/ol>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Understanding PCB Basics: Types, Materials, and How They Impact Your Project When a designer first encounters printed circuit boards, the [&hellip;]<\/p>","protected":false},"author":1,"featured_media":4853,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4852","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"spectra_custom_meta":{"_edit_lock":["1776063843:1"],"rank_math_internal_links_processed":["1"],"rank_math_seo_score":["20"],"rank_math_description":["Choosing PCB for your project? 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