{"id":4848,"date":"2026-04-09T07:06:22","date_gmt":"2026-04-09T07:06:22","guid":{"rendered":"https:\/\/flj-pcb.com\/?p=4848"},"modified":"2026-04-09T07:06:25","modified_gmt":"2026-04-09T07:06:25","slug":"high-tg-pcb-buying-guide","status":"publish","type":"post","link":"https:\/\/flj-pcb.com\/vi\/high-tg-pcb-buying-guide\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn mua PCB c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"introduction-the-high-tg-pcb-strategic-imperative\"><strong>Gi\u1edbi thi\u1ec7u: Y\u00eau c\u1ea7u chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ed1i v\u1edbi PCB c\u00f3 ch\u1ec9 s\u1ed1 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha (TG) cao<\/strong><\/h2>\n\n\n\n<p>\u0110\u1ed9 tin c\u1eady c\u1ee7a s\u1ea3n ph\u1ea9m c\u00f3 th\u1ec3 ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ed9t con s\u1ed1 duy nh\u1ea5t, th\u01b0\u1eddng \u00edt \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn: Nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha th\u1ee7y tinh (Tg).<\/p>\n\n\n\n<p>N\u1ebfu con s\u1ed1 n\u00e0y kh\u00f4ng ch\u00ednh x\u00e1c, bo m\u1ea1ch c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 b\u1ecb h\u1ecfng. N\u00f3 c\u00f3 th\u1ec3 b\u1ecb bong l\u1edbp trong qu\u00e1 tr\u00ecnh h\u00e0n. N\u00f3 c\u00f3 th\u1ec3 b\u1ecb n\u1ee9t do s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 li\u00ean t\u1ee5c trong \u0111\u1ed9ng c\u01a1 \u00f4 t\u00f4. T\u1ec7 h\u01a1n n\u1eefa, n\u00f3 c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng tr\u00ean b\u00e0n th\u1eed nghi\u1ec7m nh\u01b0ng l\u1ea1i h\u1ecfng h\u00f3c khi \u0111\u01b0a v\u00e0o s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf sau m\u1ed9t n\u0103m.<\/p>\n\n\n\n<p>H\u1ea7u h\u1ebft c\u00e1c b\u00e0i vi\u1ebft \u0111\u1ec1u \u0111\u1ecbnh ngh\u0129a PCB c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-TG) \u0111\u01a1n gi\u1ea3n l\u00e0 nh\u1eefng v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha (Tg) tr\u00ean 170\u00b0C ho\u1eb7c 180\u00b0C. \u0110i\u1ec1u n\u00e0y \u0111\u00fang nh\u01b0ng ch\u01b0a \u0111\u1ea7y \u0111\u1ee7. H\u1ecd ch\u1ec9 coi \u0111\u00f3 l\u00e0 m\u1ed9t lo\u1ea1i v\u1eadt li\u1ec7u \u201ct\u1ed1t h\u01a1n\u201d. \u0110i\u1ec1u n\u00e0y \u0111\u00e3 b\u1ecf qua \u0111i\u1ec3m m\u1ea5u ch\u1ed1t mang t\u00ednh chi\u1ebfn l\u01b0\u1ee3c.<\/p>\n\n\n\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1ea3ng m\u1ea1ch in (PCB) c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-TG) l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh quan tr\u1ecdng c\u1ea3 v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt l\u1eabn kinh doanh. \u0110i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a s\u1ea3n ph\u1ea9m, chi ph\u00ed s\u1ea3n xu\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng c\u1ee7a s\u1ea3n ph\u1ea9m trong c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t. L\u1ef1a ch\u1ecdn sai l\u1ea7m s\u1ebd d\u1eabn \u0111\u1ebfn c\u00e1c s\u1ef1 c\u1ed1 trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf v\u00e0 chi ph\u00ed b\u1ea3o h\u00e0nh cao. Ng\u01b0\u1ee3c l\u1ea1i, l\u1ef1a ch\u1ecdn \u0111\u00fang \u0111\u1eafn s\u1ebd gi\u00fap x\u00e2y d\u1ef1ng uy t\u00edn v\u1ec1 \u0111\u1ed9 tin c\u1eady.<\/p>\n\n\n\n<p><strong>V\u1eady, y\u00eau c\u1ea7u chi\u1ebfn l\u01b0\u1ee3c th\u1ef1c s\u1ef1 l\u00e0 g\u00ec?<\/strong><\/p>\n\n\n\n<p>Th\u1ee9 nh\u1ea5t, c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed hi\u1ec7n \u0111\u1ea1i t\u1ecfa nhi\u1ec7t nhi\u1ec1u h\u01a1n. Qu\u00e1 tr\u00ecnh h\u00e0n kh\u00f4ng ch\u00ec \u0111\u00f2i h\u1ecfi nhi\u1ec7t \u0111\u1ed9 nung ch\u1ea3y cao h\u01a1n (th\u01b0\u1eddng l\u00e0 260\u00b0C). C\u00e1c b\u1ea3ng m\u1ea1ch d\u00e0y \u0111\u1eb7c, nhi\u1ec1u l\u1edbp t\u1ea1o ra nhi\u1ec1u nhi\u1ec7t h\u01a1n. C\u00e1c h\u1ec7 th\u1ed1ng \u00f4 t\u00f4 v\u00e0 c\u00f4ng nghi\u1ec7p ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t. V\u1eadt li\u1ec7u FR-4 ti\u00eau chu\u1ea9n, v\u1edbi nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha th\u1ee7y tinh (Tg) t\u1eeb 130\u2013150\u00b0C, th\u01b0\u1eddng kh\u00f4ng th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c n\u00e0y. L\u00f5i c\u1ee7a n\u00f3 b\u1eaft \u0111\u1ea7u m\u1ec1m ra v\u00e0 gi\u00e3n n\u1edf, \u0111e d\u1ecda \u0111\u1ebfn c\u00e1c l\u1ed7 m\u1ea1 v\u00e0 c\u00e1c m\u1ea1ch \u0111i\u1ec7n nh\u1ea1y c\u1ea3m.<\/p>\n\n\n\n<p>Th\u1ee9 hai, \u0111\u1ed9 tin c\u1eady kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t t\u1eeb ng\u1eef su\u00f4ng. \u0110\u1ed1i v\u1edbi m\u1ed9t chuy\u00ean gia nh\u00e0 m\u00e1y, \u0111\u1ed9 tin c\u1eady \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 th\u00f4ng qua c\u00e1c b\u00e0i ki\u1ec3m tra c\u1ee5 th\u1ec3. Ch\u00fang t\u00f4i xem x\u00e9t&nbsp;<strong>T260<\/strong>&nbsp;v\u00e0&nbsp;<strong>T288<\/strong>&nbsp;th\u1eddi gian (th\u1eddi gian v\u1eadt li\u1ec7u ch\u1ed1ng l\u1ea1i hi\u1ec7n t\u01b0\u1ee3ng bong tr\u00f3c \u1edf c\u00e1c nhi\u1ec7t \u0111\u1ed9 \u0111\u00f3). Ch\u00fang t\u00f4i \u0111o&nbsp;<strong>H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t theo tr\u1ee5c Z<\/strong>&nbsp;(m\u1ee9c \u0111\u1ed9 gi\u00e3n n\u1edf theo chi\u1ec1u d\u1ecdc c\u1ee7a b\u1ea3ng m\u1ea1ch khi \u0111\u01b0\u1ee3c gia nhi\u1ec7t, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0m v\u1ee1 c\u00e1c \u1ed1ng \u0111\u1ed3ng trong c\u00e1c l\u1ed7 vias). C\u00e1c v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (TG) cho k\u1ebft qu\u1ea3 t\u1ed1t h\u01a1n \u0111\u00e1ng k\u1ec3 trong c\u00e1c th\u1eed nghi\u1ec7m n\u00e0y. \u0110\u00e2y ch\u00ednh l\u00e0 \u201cl\u1ee3i \u00edch th\u00f4ng tin\u201d c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u00e0 c\u00e1c b\u00e0i b\u00e1o chung chung th\u01b0\u1eddng thi\u1ebfu s\u00f3t.<\/p>\n\n\n\n<p>Cu\u1ed1i c\u00f9ng, s\u1ef1 l\u1ef1a ch\u1ecdn n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 mi\u1ec5n ph\u00ed. C\u00f3 nh\u1eefng s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i. Vi\u1ec7c chuy\u1ec3n t\u1eeb FR-4 ti\u00eau chu\u1ea9n (TG150) sang FR-4 hi\u1ec7u su\u1ea5t cao (nh\u01b0 IT-180A v\u1edbi TG180) c\u00f3 th\u1ec3 l\u00e0m t\u0103ng chi ph\u00ed v\u1eadt li\u1ec7u t\u1eeb 20-40%. C\u00e1c v\u1eadt li\u1ec7u c\u00f3 Tg r\u1ea5t cao c\u00f3 th\u1ec3 d\u1ec5 v\u1ee1 h\u01a1n, \u0111\u00f2i h\u1ecfi ph\u1ea3i x\u1eed l\u00fd c\u1ea9n th\u1eadn. Ch\u00fang c\u0169ng l\u00e0m m\u00f2n m\u0169i khoan nhanh h\u01a1n v\u00e0 c\u1ea7n chu k\u1ef3 \u00e9p l\u1edbp d\u00e0i h\u01a1n. B\u1ea1n ph\u1ea3i c\u00e2n nh\u1eafc nh\u1eefng chi ph\u00ed n\u00e0y so v\u1edbi r\u1ee7i ro h\u1ecfng h\u00f3c.<\/p>\n\n\n\n<p>H\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd \u0111i s\u00e2u h\u01a1n nh\u1eefng \u0111\u1ecbnh ngh\u0129a \u0111\u01a1n thu\u1ea7n. Ch\u00fang t\u00f4i s\u1ebd cung c\u1ea5p cho b\u1ea1n nh\u1eefng ki\u1ebfn th\u1ee9c th\u1ef1c ti\u1ec5n \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 \u0111\u01b0a ra l\u1ef1a ch\u1ecdn t\u1ed1i \u01b0u. B\u1ea1n s\u1ebd kh\u00f4ng ch\u1ec9 h\u1ecdc \u0111\u01b0\u1ee3c&nbsp;<em>khi<\/em>&nbsp;\u0111\u1ec3 ch\u1ec9 \u0111\u1ecbnh m\u1ed9t b\u1ea3ng m\u1ea1ch in c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-TG), nh\u01b0ng&nbsp;<em>l\u1edbp m\u1ea5y<\/em>&nbsp;\u0111\u1ec3 ch\u1ecdn v\u00e0&nbsp;<em>nh\u01b0 th\u1ebf n\u00e0o<\/em>&nbsp;h\u1ee3p t\u00e1c v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t c\u1ee7a b\u1ea1n \u0111\u1ec3 hi\u1ec7n th\u1ef1c h\u00f3a d\u1ef1 \u00e1n n\u00e0y. M\u1ee5c ti\u00eau l\u00e0 bi\u1ebfn c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt th\u00e0nh l\u1ee3i th\u1ebf chi\u1ebfn l\u01b0\u1ee3c cho s\u1ea3n ph\u1ea9m c\u1ee7a b\u1ea1n. H\u00e3y b\u1eaft \u0111\u1ea7u n\u00e0o.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"material-science-and-performance-trade-offs\">Khoa h\u1ecdc v\u1eadt li\u1ec7u v\u00e0 s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa c\u00e1c y\u1ebfu t\u1ed1 hi\u1ec7u su\u1ea5t<\/h2>\n\n\n\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn PCB c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-TG) l\u00e0 m\u1ed9t s\u1ef1 c\u00e2n b\u1eb1ng. B\u1ea1n s\u1ebd \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t quan tr\u1ecdng nh\u01b0ng \u0111\u1ed3ng th\u1eddi ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi nh\u1eefng th\u00e1ch th\u1ee9c m\u1edbi. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 ba s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i ch\u00ednh m\u00e0 c\u00e1c k\u1ef9 s\u01b0 ph\u1ea3i \u0111\u1ed1i m\u1eb7t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-thermal-reliability-vs-material-cost\">1. \u0110\u1ed9 tin c\u1eady nhi\u1ec7t so v\u1edbi chi ph\u00ed v\u1eadt li\u1ec7u<\/h3>\n\n\n\n<p>L\u00fd do ch\u00ednh \u0111\u1ec3 s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha th\u1ee7y tinh (Tg) cao l\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t. FR-4 ti\u00eau chu\u1ea9n c\u00f3 nhi\u1ec7t \u0111\u1ed9 Tg kho\u1ea3ng 140\u00b0C. FR-4 c\u00f3 nhi\u1ec7t \u0111\u1ed9 Tg cao b\u1eaft \u0111\u1ea7u t\u1eeb 170\u00b0C v\u00e0 c\u00f3 th\u1ec3 v\u01b0\u1ee3t qu\u00e1 200\u00b0C. Nhi\u1ec7t \u0111\u1ed9 Tg cao h\u01a1n n\u00e0y gi\u00fap b\u1ea3ng m\u1ea1ch gi\u1eef \u0111\u01b0\u1ee3c \u0111\u1ed9 c\u1ee9ng ngay c\u1ea3 \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/p>\n\n\n\n<p>Tuy nhi\u00ean, hi\u1ec7u su\u1ea5t t\u1ea3n nhi\u1ec7t cao \u0111\u1ed3ng ngh\u0129a v\u1edbi chi ph\u00ed cao h\u01a1n. V\u1eadt li\u1ec7u TG170 c\u00f3 th\u1ec3 \u0111\u1eaft h\u01a1n FR-4 ti\u00eau chu\u1ea9n t\u1eeb 20\u201330%%. C\u00e1c lo\u1ea1i TG180 ho\u1eb7c TG200 c\u00f3 th\u1ec3 \u0111\u1eaft h\u01a1n t\u1eeb 50\u2013100%%. B\u1ea1n ph\u1ea3i ch\u1ee9ng minh r\u1eb1ng chi ph\u00ed n\u00e0y l\u00e0 h\u1ee3p l\u00fd d\u1ef1a tr\u00ean nhu c\u1ea7u t\u1ea3n nhi\u1ec7t th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<p><strong>Nh\u1eadn \u0111\u1ecbnh c\u1ee7a chuy\u00ean gia: B\u1ed9 ba Tg-Td.<\/strong>&nbsp;\u0110\u1eebng ch\u1ec9 nh\u00ecn v\u00e0o gi\u00e1 tr\u1ecb Tg. B\u1ea1n c\u0169ng c\u1ea7n ki\u1ec3m tra gi\u00e1 tr\u1ecb Td (Nhi\u1ec7t \u0111\u1ed9 ph\u00e2n h\u1ee7y). Td l\u00e0 nhi\u1ec7t \u0111\u1ed9 m\u00e0 t\u1ea1i \u0111\u00f3 v\u1eadt li\u1ec7u b\u1eaft \u0111\u1ea7u ph\u00e2n h\u1ee7y h\u00f3a h\u1ecdc. M\u1ed9t v\u1eadt li\u1ec7u c\u00f3 gi\u00e1 tr\u1ecb Tg cao t\u1ed1t c\u1ea7n c\u00f3 gi\u00e1 tr\u1ecb Td tr\u00ean 320\u00b0C. \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec1u chu k\u1ef3 h\u00e0n l\u1ea1i kh\u00f4ng ch\u00ec. Lu\u00f4n y\u00eau c\u1ea7u nh\u00e0 cung c\u1ea5p cung c\u1ea5p gi\u00e1 tr\u1ecb Td t\u1eeb b\u1ea3ng d\u1eef li\u1ec7u IPC-4101.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-mechanical-stability-vs-manufacturability\">2. \u0110\u1ed9 \u1ed5n \u0111\u1ecbnh c\u01a1 h\u1ecdc so v\u1edbi kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t<\/h3>\n\n\n\n<p>C\u00e1c v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-TG) \u1ed5n \u0111\u1ecbnh h\u01a1n. Ch\u00fang c\u00f3 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t (CTE) theo tr\u1ee5c Z th\u1ea5p h\u01a1n. FR-4 ti\u00eau chu\u1ea9n gi\u00e3n n\u1edf r\u1ea5t nhi\u1ec1u khi n\u00f3ng. FR-4 c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao gi\u00e3n n\u1edf \u00edt h\u01a1n nhi\u1ec1u. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea3o v\u1ec7 c\u00e1c l\u1ed7 m\u1ea1 tr\u00ean b\u1ea3ng m\u1ea1ch \u0111a l\u1edbp kh\u1ecfi b\u1ecb n\u1ee9t do \u1ee9ng su\u1ea5t.<\/p>\n\n\n\n<p>Tuy nhi\u00ean, t\u00ednh \u1ed5n \u0111\u1ecbnh n\u00e0y khi\u1ebfn v\u1eadt li\u1ec7u tr\u1edf n\u00ean c\u1ee9ng h\u01a1n. \u0110i\u1ec1u n\u00e0y g\u00e2y ra hai v\u1ea5n \u0111\u1ec1 trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t. Th\u1ee9 nh\u1ea5t, m\u0169i khoan b\u1ecb m\u00f2n nhanh h\u01a1n kho\u1ea3ng 20%. \u0110i\u1ec1u n\u00e0y l\u00e0m t\u0103ng chi ph\u00ed d\u1ee5ng c\u1ee5. Th\u1ee9 hai, v\u1eadt li\u1ec7u c\u1ea7n c\u00e1c chu k\u1ef3 \u00e9p l\u1edbp d\u00e0i h\u01a1n d\u01b0\u1edbi \u00e1p su\u1ea5t cao h\u01a1n. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0m ch\u1eadm ti\u1ebfn \u0111\u1ed9 s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<p><strong>Nh\u1eadn \u0111\u1ecbnh c\u1ee7a chuy\u00ean gia: Ma tr\u1eadn r\u1ee7i ro CAF.<\/strong>&nbsp;\u0110\u1ed1i v\u1edbi c\u00e1c b\u1ea3ng m\u1ea1ch d\u00e0y v\u00e0 c\u00f3 s\u1ed1 l\u1edbp cao, v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-TG) l\u00e0 y\u1ebfu t\u1ed1 b\u1eaft bu\u1ed9c. \u0110\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 h\u1ec7 th\u1ed1ng nh\u1ef1a c\u1ee7a ch\u00fang gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i hi\u1ec7n t\u01b0\u1ee3ng CAF (S\u1ee3i d\u1eabn \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng). \u0110i\u1ec1u n\u00e0y gi\u00fap ng\u0103n ch\u1eb7n hi\u1ec7n t\u01b0\u1ee3ng ch\u1eadp \u0111i\u1ec7n gi\u1eefa c\u00e1c l\u1ed7 khi g\u1eb7p \u0111i\u1ec1u ki\u1ec7n \u0111i\u1ec7n \u00e1p cao v\u00e0 \u0111\u1ed9 \u1ea9m cao. N\u1ebfu thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n c\u00f3 t\u1eeb 8 l\u1edbp tr\u1edf l\u00ean ho\u1eb7c c\u00e1c \u0111\u01b0\u1eddng d\u1eabn m\u1ea1ch m\u1ea3nh, vi\u1ec7c l\u1ef1a ch\u1ecdn n\u00e0y l\u00e0 kh\u00f4ng th\u1ec3 th\u1ecfa hi\u1ec7p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-chemical--electrical-performance-vs-process-complexity\">3. Hi\u1ec7u su\u1ea5t h\u00f3a h\u1ecdc v\u00e0 \u0111i\u1ec7n so v\u1edbi \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a quy tr\u00ecnh<\/h3>\n\n\n\n<p>C\u00e1c v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-TG) h\u1ea5p th\u1ee5 \u00edt \u0111\u1ed9 \u1ea9m h\u01a1n. Ch\u00fang c\u0169ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng h\u00f3a ch\u1ea5t t\u1ed1t h\u01a1n. \u0110i\u1ec1u n\u00e0y gi\u00fap \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i trong c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t. \u0110\u1ed1i v\u1edbi c\u00e1c thi\u1ebft k\u1ebf t\u1ed1c \u0111\u1ed9 cao, m\u1ed9t s\u1ed1 lo\u1ea1i v\u1eadt li\u1ec7u High-TG (nh\u01b0 Rogers 4350B) c\u00f2n c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n<p>\u0110i\u1ec3m c\u1ea7n c\u00e2n nh\u1eafc l\u00e0 vi\u1ec7c ki\u1ec3m so\u00e1t quy tr\u00ecnh. Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c l\u1edbp ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t \u0111\u1ec1u ho\u1ea1t \u0111\u1ed9ng gi\u1ed1ng nhau. V\u00ed d\u1ee5, l\u1edbp ho\u00e0n thi\u1ec7n ENEPIG c\u00f3 th\u1ec3 ph\u1ea3n \u1ee9ng kh\u00e1c bi\u1ec7t tr\u00ean ch\u1ea5t n\u1ec1n c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-TG) trong qu\u00e1 tr\u00ecnh thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 l\u1eb7p \u0111i l\u1eb7p l\u1ea1i. Nh\u00e0 s\u1ea3n xu\u1ea5t c\u1ee7a b\u1ea1n ph\u1ea3i \u0111i\u1ec1u ch\u1ec9nh c\u00e1c quy tr\u00ecnh h\u00f3a h\u1ecdc v\u00e0 nhi\u1ec7t c\u1ee7a h\u1ecd. \u0110i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi ki\u1ebfn th\u1ee9c chuy\u00ean m\u00f4n.<\/p>\n\n\n\n<p><strong>Nh\u1eadn \u0111\u1ecbnh c\u1ee7a chuy\u00ean gia: Khung l\u1ef1a ch\u1ecdn theo c\u1ea5p \u0111\u1ed9.<\/strong>&nbsp;\u0110\u1eebng \u0111\u01b0a ra qu\u00e1 nhi\u1ec1u y\u00eau c\u1ea7u. H\u00e3y tham kh\u1ea3o h\u01b0\u1edbng d\u1eabn \u0111\u01a1n gi\u1ea3n sau \u0111\u00e2y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>TG150:<\/strong>\u00a0Ph\u00f9 h\u1ee3p v\u1edbi h\u1ea7u h\u1ebft c\u00e1c m\u1eb7t h\u00e0ng ti\u00eau d\u00f9ng kh\u00f4ng ch\u1ee9a ch\u00ec.<\/li>\n\n\n\n<li><strong>TG170:<\/strong>\u00a0C\u1ea7n thi\u1ebft cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed d\u01b0\u1edbi n\u1eafp ca-p\u00f4 \u00f4 t\u00f4 ho\u1eb7c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p.<\/li>\n\n\n\n<li><strong>TG180+ ho\u1eb7c lo\u1ea1i Rogers:<\/strong>\u00a0D\u00e0nh ri\u00eang cho c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, m\u1ea1ch RF ho\u1eb7c l\u0129nh v\u1ef1c qu\u00e2n s\u1ef1\/h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 (Lo\u1ea1i 3 theo ti\u00eau chu\u1ea9n IPC).<\/li>\n<\/ul>\n\n\n\n<p>H\u00e3y lu\u00f4n th\u1ea3o lu\u1eadn v\u1ec1 l\u1ef1a ch\u1ecdn c\u1ee7a b\u1ea1n v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t t\u1eeb s\u1edbm. H\u1ecd c\u00f3 th\u1ec3 c\u1ea3nh b\u00e1o b\u1ea1n v\u1ec1 kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t v\u00e0 \u0111\u01b0a ra con s\u1ed1 chi ph\u00ed th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"design-manufacturing-and-reliability-integration\">Thi\u1ebft k\u1ebf, s\u1ea3n xu\u1ea5t v\u00e0 t\u00edch h\u1ee3p \u0111\u1ed9 tin c\u1eady<\/h2>\n\n\n\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn PCB c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-Tg) kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 v\u1ea5n \u0111\u1ec1 ch\u1ecdn v\u1eadt li\u1ec7u. \u0110\u00f3 l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh mang t\u00ednh h\u1ec7 th\u1ed1ng. B\u1ea1n c\u1ea7n ph\u1ea3i k\u1ebft h\u1ee3p h\u00e0i h\u00f2a gi\u1eefa m\u1ee5c ti\u00eau thi\u1ebft k\u1ebf, th\u1ef1c t\u1ebf s\u1ea3n xu\u1ea5t v\u00e0 y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 tin c\u1eady. Ph\u1ea7n n\u00e0y s\u1ebd gi\u1ea3i th\u00edch c\u00e1ch k\u1ebft n\u1ed1i ba y\u1ebfu t\u1ed1 n\u00e0y v\u1edbi nhau.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"the-core-design-rule-beyond-just-tg\">Nguy\u00ean t\u1eafc thi\u1ebft k\u1ebf c\u1ed1t l\u00f5i: Kh\u00f4ng ch\u1ec9 d\u1eebng l\u1ea1i \u1edf Tg<\/h3>\n\n\n\n<p>Tr\u01b0\u1edbc h\u1ebft, nguy\u00ean t\u1eafc thi\u1ebft k\u1ebf ch\u00ednh r\u1ea5t \u0111\u01a1n gi\u1ea3n. Nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha (Tg) c\u1ee7a v\u1eadt li\u1ec7u PCB ph\u1ea3i cao h\u01a1n nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng. M\u1ed9t nguy\u00ean t\u1eafc ph\u1ed5 bi\u1ebfn l\u00e0 n\u00ean ch\u1eeba m\u1ed9t bi\u00ean \u0111\u1ed9 an to\u00e0n t\u1eeb 20\u201325\u00b0C. V\u00ed d\u1ee5, n\u1ebfu thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng \u1edf 150\u00b0C, h\u00e3y s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u c\u00f3 Tg \u00edt nh\u1ea5t l\u00e0 170\u2013175\u00b0C.<\/p>\n\n\n\n<p>Nh\u01b0ng quy t\u1eafc n\u00e0y v\u1eabn ch\u01b0a \u0111\u1ee7. B\u1ea1n c\u0169ng ph\u1ea3i ki\u1ec3m tra&nbsp;<strong>Td<\/strong>, hay c\u00f2n g\u1ecdi l\u00e0 nhi\u1ec7t \u0111\u1ed9 ph\u00e2n h\u1ee7y. Tg l\u00e0 nhi\u1ec7t \u0111\u1ed9 m\u00e0 t\u1ea1i \u0111\u00f3 v\u1eadt li\u1ec7u b\u1eaft \u0111\u1ea7u m\u1ec1m ra. Td l\u00e0 nhi\u1ec7t \u0111\u1ed9 m\u00e0 t\u1ea1i \u0111\u00f3 v\u1eadt li\u1ec7u b\u1eaft \u0111\u1ea7u ch\u00e1y v\u00e0 ph\u00e2n h\u1ee7y h\u00f3a h\u1ecdc. \u0110\u1ed1i v\u1edbi h\u00e0n kh\u00f4ng ch\u00ec, b\u1ea3ng m\u1ea1ch c\u1ee7a b\u1ea1n s\u1ebd ph\u1ea3i ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 h\u00e0n l\u1ea1i tr\u00ean 260\u00b0C. Tg cao l\u00e0 t\u1ed1t, nh\u01b0ng Td th\u1ea5p l\u1ea1i r\u1ea5t nguy hi\u1ec3m. Lu\u00f4n \u0111\u1ea3m b\u1ea3o r\u1eb1ng Td c\u1ee7a v\u1eadt li\u1ec7u ph\u1ea3i cao h\u01a1n 320\u00b0C. \u0110\u00e2y l\u00e0 m\u1ed9t l\u1ed7 h\u1ed5ng quan tr\u1ecdng trong h\u1ea7u h\u1ebft c\u00e1c h\u01b0\u1edbng d\u1eabn.<\/p>\n\n\n\n<p><strong>Nh\u1eadn \u0111\u1ecbnh c\u1ee7a chuy\u00ean gia:<\/strong>&nbsp;\u0110\u1eebng ch\u1ec9 nh\u00ecn v\u00e0o ch\u1ec9 s\u1ed1 Tg. H\u00e3y y\u00eau c\u1ea7u nh\u00e0 s\u1ea3n xu\u1ea5t cung c\u1ea5p b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1eadt li\u1ec7u. Ki\u1ec3m tra c\u1ea3&nbsp;<strong>Tg v\u00e0 Td<\/strong>. M\u1ed9t lo\u1ea1i FR-4 c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (Tg) t\u1ed1t n\u00ean c\u00f3 nhi\u1ec7t \u0111\u1ed9 ph\u00e2n h\u1ee7y (Td) l\u1edbn h\u01a1n 320\u00b0C. \u0110i\u1ec1u n\u00e0y gi\u00fap ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng ti\u1ec1m \u1ea9n trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p nhi\u1ec1u l\u1ea7n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"selecting-the-right-material-tier\">L\u1ef1a ch\u1ecdn c\u1ea5p \u0111\u1ed9 v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p<\/h3>\n\n\n\n<p>Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (Tg) \u0111\u1ec1u gi\u1ed1ng nhau. Ch\u00fang t\u00f4i ph\u00e2n lo\u1ea1i ch\u00fang th\u00e0nh c\u00e1c nh\u00f3m theo m\u1ee9c \u0111\u1ed9 hi\u1ec7u qu\u1ea3 chi ph\u00ed. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea1n t\u1ed1i \u01b0u h\u00f3a ng\u00e2n s\u00e1ch c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>C\u1ea5p 1: TG150-TG170 FR-4.<\/strong>\u00a0\u0110\u00e2y l\u00e0 lo\u1ea1i v\u1eadt li\u1ec7u \u201ckh\u00f4ng ch\u1ee9a ch\u00ec\u201d ti\u00eau chu\u1ea9n. S\u1ea3n ph\u1ea9m n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi h\u1ea7u h\u1ebft c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c qu\u00e1 tr\u00ecnh h\u00e0n n\u00f3ng ch\u1ea3y kh\u00f4ng ch\u00ec r\u1ea5t t\u1ed1t. \u0110\u00e2y l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn n\u00e2ng c\u1ea5p v\u1edbi chi ph\u00ed th\u1ea5p so v\u1edbi lo\u1ea1i FR-4 c\u01a1 b\u1ea3n.<\/li>\n\n\n\n<li><strong>C\u1ea5p 2: TG170-TG180 FR-4 (v\u00ed d\u1ee5: Isola FR370HR, IT-180A).<\/strong>\u00a0S\u1ea3n ph\u1ea9m n\u00e0y d\u00e0nh cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi kh\u1eaft khe. S\u1eed d\u1ee5ng s\u1ea3n ph\u1ea9m n\u00e0y cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed d\u01b0\u1edbi n\u1eafp ca-p\u00f4 \u00f4 t\u00f4 ho\u1eb7c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p. S\u1ea3n ph\u1ea9m mang l\u1ea1i \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t v\u00e0 c\u01a1 h\u1ecdc cao h\u01a1n. Gi\u00e1 th\u00e0nh d\u1ef1 ki\u1ebfn s\u1ebd cao h\u01a1n 15-30% so v\u1edbi FR-4 ti\u00eau chu\u1ea9n.<\/li>\n\n\n\n<li><strong>C\u1ea5p 3: TG200+ v\u00e0 c\u00e1c v\u1eadt li\u1ec7u chuy\u00ean d\u1ee5ng (v\u00ed d\u1ee5: Rogers 4350B).<\/strong>\u00a0Ch\u1ec9 n\u00ean s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i n\u00e0y trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p \u0111\u1eb7c bi\u1ec7t. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m c\u00e1c thi\u1ebft k\u1ebf t\u1ea7n s\u1ed1 v\u00f4 tuy\u1ebfn (RF) ho\u1eb7c t\u1ed1c \u0111\u1ed9 cao, ho\u1eb7c c\u00e1c m\u00f4i tr\u01b0\u1eddng c\u00f3 chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i m\u1ea1nh. Chi ph\u00ed c\u00f3 th\u1ec3 cao g\u1ea5p 2-5 l\u1ea7n so v\u1edbi FR-4 ti\u00eau chu\u1ea9n.<\/li>\n<\/ul>\n\n\n\n<p><strong>Nh\u1eadn \u0111\u1ecbnh c\u1ee7a chuy\u00ean gia:<\/strong>&nbsp;\u0110\u1eebng ch\u1ecdn th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt qu\u00e1 cao. Vi\u1ec7c s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u TG200 cho m\u1ed9t b\u1ed9 ngu\u1ed3n \u0111\u01a1n gi\u1ea3n l\u00e0 l\u00e3ng ph\u00ed. H\u00e3y b\u1eaft \u0111\u1ea7u t\u1eeb C\u1ea5p 1. Ch\u1ec9 chuy\u1ec3n sang C\u1ea5p 2 n\u1ebfu b\u1ea1n c\u1ea7n \u0111\u1ed9 tin c\u1eady cao h\u01a1n cho c\u00e1c b\u1ea3ng m\u1ea1ch nhi\u1ec1u l\u1edbp ho\u1eb7c trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 cao. C\u00e1ch ti\u1ebfp c\u1eadn theo c\u1ea5p \u0111\u1ed9 n\u00e0y gi\u00fap ki\u1ec3m so\u00e1t chi ph\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"manufacturing-adjustments-and-challenges\">Nh\u1eefng \u0111i\u1ec1u ch\u1ec9nh v\u00e0 th\u00e1ch th\u1ee9c trong l\u0129nh v\u1ef1c s\u1ea3n xu\u1ea5t<\/h3>\n\n\n\n<p>C\u00e1c v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (Tg) l\u00e0m thay \u0111\u1ed5i quy tr\u00ecnh s\u1ea3n xu\u1ea5t. Hi\u1ec3u r\u00f5 \u0111i\u1ec1u n\u00e0y s\u1ebd gi\u00fap b\u1ea1n l\u1eadp k\u1ebf ho\u1ea1ch v\u00e0 tr\u00e1nh \u0111\u01b0\u1ee3c s\u1ef1 ch\u1eadm tr\u1ec5.<\/p>\n\n\n\n<p>Ch\u1ea5t nh\u1ef1a trong c\u00e1c t\u1ea5m laminate c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (Tg) c\u1ee9ng h\u01a1n. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn hai v\u1ea5n \u0111\u1ec1 ch\u00ednh:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>M\u00f2n m\u0169i khoan:<\/strong>\u00a0Ch\u1ea5t li\u1ec7u th\u1ee7y tinh m\u00e0i m\u00f2n v\u00e0 nh\u1ef1a c\u1ee9ng khi\u1ebfn m\u0169i khoan b\u1ecb m\u00f2n nhanh h\u01a1n. \u0110\u1ed1i v\u1edbi v\u1eadt li\u1ec7u TG180+, m\u1ee9c \u0111\u1ed9 m\u00f2n c\u1ee7a m\u0169i khoan s\u1ebd cao h\u01a1n 15-20% so v\u1edbi v\u1eadt li\u1ec7u FR-4 ti\u00eau chu\u1ea9n. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng l\u1ed7 khoan v\u00e0 chi ph\u00ed.<\/li>\n\n\n\n<li><strong>Chu k\u1ef3 \u00e9p m\u00e0ng d\u00e0i h\u01a1n:<\/strong>\u00a0C\u00e1c v\u1eadt li\u1ec7u n\u00e0y c\u1ea7n nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t cao h\u01a1n \u0111\u1ec3 li\u00ean k\u1ebft. Chu k\u1ef3 \u00e9p trong m\u00e1y \u00e9p c\u00f3 th\u1ec3 k\u00e9o d\u00e0i th\u00eam 20\u201330 ph\u00fat. \u0110i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn l\u1ecbch tr\u00ecnh s\u1ea3n xu\u1ea5t.<\/li>\n<\/ol>\n\n\n\n<p><strong>Nh\u1eadn \u0111\u1ecbnh c\u1ee7a chuy\u00ean gia:<\/strong>&nbsp;H\u00e3y trao \u0111\u1ed5i v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t PCB c\u1ee7a b\u1ea1n ngay t\u1eeb s\u1edbm. Khi b\u1ea1n ch\u1ec9 \u0111\u1ecbnh m\u1ed9t lo\u1ea1i v\u1eadt li\u1ec7u nh\u01b0 IT-180A, h\u00e3y h\u1ecfi: \u201cC\u00f3 c\u1ea7n \u0111i\u1ec1u ch\u1ec9nh t\u1ed1c \u0111\u1ed9 khoan ho\u1eb7c th\u00f4ng s\u1ed1 \u00e9p l\u1edbp kh\u00f4ng?\u201d \u0110i\u1ec1u n\u00e0y cho th\u1ea5y b\u1ea1n hi\u1ec3u r\u00f5 v\u1ec1 DFM (Thi\u1ebft k\u1ebf cho S\u1ea3n xu\u1ea5t). \u0110i\u1ec1u n\u00e0y gi\u00fap x\u00e2y d\u1ef1ng m\u1ed1i quan h\u1ec7 h\u1ee3p t\u00e1c t\u1ed1t h\u01a1n v\u00e0 tr\u00e1nh nh\u1eefng b\u1ea5t ng\u1edd kh\u00f4ng mong mu\u1ed1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"proving-reliability-the-tests-that-matter\">Ch\u1ee9ng minh \u0111\u1ed9 tin c\u1eady: Nh\u1eefng b\u00e0i ki\u1ec3m tra quan tr\u1ecdng<\/h3>\n\n\n\n<p>Ai c\u0169ng c\u00f3 th\u1ec3 kh\u1eb3ng \u0111\u1ecbnh m\u1ed9t b\u1ea3ng m\u1ea1ch l\u00e0 \u0111\u00e1ng tin c\u1eady. B\u1ea1n c\u1ea7n b\u1eb1ng ch\u1ee9ng. H\u00e3y ch\u1ec9 \u0111\u1ecbnh c\u00e1c b\u00e0i ki\u1ec3m tra quan tr\u1ecdng n\u00e0y cho c\u00e1c b\u1ea3ng m\u1ea1ch in (PCB) c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (Tg) c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Th\u1eed nghi\u1ec7m T260\/T288:<\/strong>\u00a0Th\u1eed nghi\u1ec7m n\u00e0y \u0111o \u201cTh\u1eddi gian bong tr\u00f3c\u201d \u1edf nhi\u1ec7t \u0111\u1ed9 260\u00b0C ho\u1eb7c 288\u00b0C. K\u1ebft qu\u1ea3 cho th\u1ea5y v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 h\u00e0n trong bao l\u00e2u. V\u1eadt li\u1ec7u c\u00f3 Tg cao t\u1ed1t ph\u1ea3i ch\u1ecbu \u0111\u01b0\u1ee3c &gt;60 ph\u00fat trong th\u1eed nghi\u1ec7m T288.<\/li>\n\n\n\n<li><strong>Th\u1eed nghi\u1ec7m kh\u00e1ng thu\u1ed1c CAF:<\/strong>\u00a0S\u1ef1 h\u00ecnh th\u00e0nh s\u1ee3i d\u1eabn \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng (CAF) l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng h\u1ecfng h\u00f3c th\u01b0\u1eddng x\u1ea3y ra trong \u0111i\u1ec1u ki\u1ec7n \u1ea9m \u01b0\u1edbt v\u00e0 \u0111i\u1ec7n \u00e1p cao. C\u00e1c v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha th\u1ee7y tinh (Tg) cao c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i hi\u1ec7n t\u01b0\u1ee3ng CAF t\u1ed1t h\u01a1n. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c b\u1ea3ng m\u1ea1ch d\u00e0y \u0111\u1eb7c, nhi\u1ec1u l\u1edbp.<\/li>\n\n\n\n<li><strong>Th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t (IPC-9701):<\/strong>\u00a0\u0110i\u1ec1u n\u00e0y m\u00f4 ph\u1ecfng s\u1ef1 dao \u0111\u1ed9ng nhi\u1ec7t \u0111\u1ed9 trong th\u1ef1c t\u1ebf. Qu\u00e1 tr\u00ecnh n\u00e0y ki\u1ec3m tra c\u00e1c l\u1ed7 xuy\u00ean m\u1ea1 xem c\u00f3 v\u1ebft n\u1ee9t hay kh\u00f4ng.<\/li>\n<\/ul>\n\n\n\n<p><strong>Nh\u1eadn \u0111\u1ecbnh c\u1ee7a chuy\u00ean gia:<\/strong>&nbsp;\u0110\u1eebng ch\u1ec9 d\u1ef1a v\u00e0o ch\u1ee9ng ch\u1ec9. \u0110\u1ed1i v\u1edbi c\u00e1c d\u1ef1 \u00e1n quan tr\u1ecdng (lo\u1ea1i IPC 3), h\u00e3y y\u00eau c\u1ea7u c\u00e1c b\u00e1o c\u00e1o th\u1eed nghi\u1ec7m th\u1ef1c t\u1ebf. H\u00e3y y\u00eau c\u1ea7u d\u1eef li\u1ec7u th\u1eed nghi\u1ec7m T288 v\u00e0 CAF cho l\u00f4 v\u1eadt li\u1ec7u c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n. \u0110\u00e2y l\u00e0 c\u00e1ch \u0111\u1ec3 b\u1ea1n \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady th\u1ef1c s\u1ef1 cho c\u00e1c h\u1ec7 th\u1ed1ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, y t\u1ebf ho\u1eb7c \u00f4 t\u00f4.<\/p>\n\n\n\n<p>Cu\u1ed1i c\u00f9ng, h\u00e3y lu\u00f4n k\u1ebft h\u1ee3p c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y v\u1edbi nhau. Thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n x\u00e1c \u0111\u1ecbnh y\u00eau c\u1ea7u (nhi\u1ec7t \u0111\u1ed9 cao). Quy tr\u00ecnh s\u1ea3n xu\u1ea5t ph\u1ea3i \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh cho ph\u00f9 h\u1ee3p v\u1edbi v\u1eadt li\u1ec7u. V\u00e0 \u0111\u1ed9 tin c\u1eady \u0111\u01b0\u1ee3c ch\u1ee9ng minh th\u00f4ng qua c\u00e1c th\u1eed nghi\u1ec7m c\u1ee5 th\u1ec3. H\u00e3y k\u1ebft h\u1ee3p ba y\u1ebfu t\u1ed1 n\u00e0y \u0111\u1ec3 th\u1ef1c hi\u1ec7n th\u00e0nh c\u00f4ng d\u1ef1 \u00e1n PCB c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha (Tg) cao.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"testing-protocols-and-ipc-standards-compliance\"><strong>C\u00e1c quy tr\u00ecnh ki\u1ec3m tra v\u00e0 vi\u1ec7c tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n IPC<\/strong><\/h2>\n\n\n\n<p>C\u00e1c v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (TG) c\u00f3 gi\u00e1 th\u00e0nh cao h\u01a1n. Do \u0111\u00f3, b\u1ea1n ph\u1ea3i ch\u1ee9ng minh r\u1eb1ng ch\u00fang ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3. C\u00e1c th\u1eed nghi\u1ec7m v\u00e0 ti\u00eau chu\u1ea9n IPC ch\u00ednh l\u00e0 b\u1eb1ng ch\u1ee9ng c\u1ee7a b\u1ea1n. Ch\u00fang gi\u00fap bi\u1ebfn quy\u1ebft \u0111\u1ecbnh t\u1eeb ph\u1ecfng \u0111o\u00e1n th\u00e0nh s\u1ef1 th\u1eadt.<\/p>\n\n\n\n<p><strong>Tr\u01b0\u1edbc ti\u00ean, b\u1ea1n c\u1ea7n ki\u1ec3m tra ch\u1ea5t li\u1ec7u c\u1ee7a s\u1ea3n ph\u1ea9m.<\/strong>&nbsp;Gi\u1ea5y ch\u1ee9ng nh\u1eadn v\u1eadt li\u1ec7u c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t (\u201cMill Cert\u201d) l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng. T\u1edd gi\u1ea5y n\u00e0y ph\u1ea3i ch\u1ee9ng minh r\u1eb1ng v\u1eadt li\u1ec7u \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n IPC-4101 cho lo\u1ea1i v\u1eadt li\u1ec7u m\u00e0 b\u1ea1n \u0111\u00e3 ch\u1ecdn. H\u00e3y ch\u00fa \u00fd \u0111\u1ebfn ba con s\u1ed1 quan tr\u1ecdng sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Tg (Nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha th\u1ee7y tinh):<\/strong>\u00a0\u0110\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh theo ti\u00eau chu\u1ea9n IPC TM-650 2.4.24.1 (ph\u01b0\u01a1ng ph\u00e1p DSC). \u0110\u1ed1i v\u1edbi \u201cHigh-TG\u201d, gi\u00e1 tr\u1ecb n\u00e0y ph\u1ea3i \u2265170\u00b0C.<\/li>\n\n\n\n<li><strong>Td (Nhi\u1ec7t \u0111\u1ed9 ph\u00e2n h\u1ee7y):<\/strong>\u00a0\u0110\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng theo ti\u00eau chu\u1ea9n IPC TM-650 2.4.24.6. Th\u00f4ng s\u1ed1 n\u00e0y th\u01b0\u1eddng quan tr\u1ecdng h\u01a1n nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha th\u1ee7y tinh (Tg). M\u1ed9t gi\u00e1 tr\u1ecb Td t\u1ed1t ph\u1ea3i l\u1edbn h\u01a1n 320\u00b0C. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y nh\u1ef1a s\u1ebd kh\u00f4ng b\u1ecb ph\u00e2n h\u1ee7y h\u00f3a h\u1ecdc trong qu\u00e1 tr\u00ecnh h\u00e0n kh\u00f4ng ch\u00ec nhi\u1ec1u l\u1ea7n.<\/li>\n\n\n\n<li><strong>Z-CTE (H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t theo tr\u1ee5c Z):<\/strong>\u00a0Th\u00f4ng s\u1ed1 n\u00e0y \u0111\u01b0\u1ee3c \u0111o \u1edf nhi\u1ec7t \u0111\u1ed9 d\u01b0\u1edbi v\u00e0 tr\u00ean Tg. H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t theo tr\u1ee5c Z (Z-CTE) th\u1ea5p h\u01a1n (v\u00ed d\u1ee5: &lt;3,0%) l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi \u0111\u1ed9 tin c\u1eady c\u1ee7a m\u1ea1ch \u0111a l\u1edbp. N\u00f3 gi\u00fap gi\u1ea3m \u1ee9ng su\u1ea5t l\u00ean c\u00e1c l\u1ed7 xuy\u00ean m\u1ea1.<\/li>\n<\/ul>\n\n\n\n<p><strong>Ti\u1ebfp theo, qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m m\u00f4 ph\u1ecfng c\u00e1c \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t trong th\u1ef1c t\u1ebf.<\/strong>&nbsp;Vi\u1ec7c \u201cki\u1ec3m tra b\u1eb1ng m\u1eaft th\u01b0\u1eddng\u201d c\u01a1 b\u1ea3n l\u00e0 kh\u00f4ng \u0111\u1ee7 \u0111\u1ed1i v\u1edbi c\u00e1c b\u1ea3ng m\u1ea1ch c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-TG). B\u1ea1n c\u1ea7n ph\u1ea3i th\u1ef1c hi\u1ec7n c\u00e1c th\u1eed nghi\u1ec7m \u1ee9ng su\u1ea5t nhi\u1ec7t.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>C\u00e1c b\u00e0i ki\u1ec3m tra T260 v\u00e0 T288:<\/strong>\u00a0\u0110\u00e2y l\u00e0 c\u00e1c th\u1eed nghi\u1ec7m \u201cth\u1eddi gian t\u00e1ch l\u1edbp\u201d. T\u1ea5m v\u00e1n \u0111\u01b0\u1ee3c \u0111\u1eb7t n\u1ed5i tr\u00ean ch\u1ea5t h\u00e0n ho\u1eb7c d\u1ea7u \u1edf nhi\u1ec7t \u0111\u1ed9 260\u00b0C ho\u1eb7c 288\u00b0C. V\u1eadt li\u1ec7u FR-4 ti\u00eau chu\u1ea9n c\u00f3 th\u1ec3 b\u1ecb t\u00e1ch l\u1edbp trong v\u00f2ng d\u01b0\u1edbi 20 ph\u00fat. M\u1ed9t v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-TG) ph\u00f9 h\u1ee3p (v\u00ed d\u1ee5: IT-180A, FR370HR) ph\u1ea3i ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 260\u00b0C trong h\u01a1n 60 ph\u00fat. H\u00e3y y\u00eau c\u1ea7u nh\u00e0 s\u1ea3n xu\u1ea5t cung c\u1ea5p b\u00e1o c\u00e1o th\u1eed nghi\u1ec7m n\u00e0y.<\/li>\n\n\n\n<li><strong>S\u1ed1c nhi\u1ec7t\/Chu k\u1ef3 nhi\u1ec7t:<\/strong>\u00a0Theo ti\u00eau chu\u1ea9n IPC-9701, th\u1eed nghi\u1ec7m n\u00e0y m\u00f4 ph\u1ecfng c\u00e1c chu k\u1ef3 b\u1eadt\/t\u1eaft ngu\u1ed3n. C\u00e1c bo m\u1ea1ch \u0111\u01b0\u1ee3c di chuy\u1ec3n qua l\u1ea1i gi\u1eefa c\u00e1c bu\u1ed3ng nhi\u1ec7t \u0111\u1ed9 c\u1ef1c cao v\u00e0 c\u1ef1c th\u1ea5p. C\u00e1c v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (TG) v\u00e0 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t theo tr\u1ee5c Z (Z-CTE) \u1ed5n \u0111\u1ecbnh cho k\u1ebft qu\u1ea3 t\u1ed1t h\u01a1n h\u1eb3n trong th\u1eed nghi\u1ec7m n\u00e0y. \u0110i\u1ec1u n\u00e0y c\u00f3 \u00fd ngh\u0129a quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng trong ng\u00e0nh \u00f4 t\u00f4 v\u00e0 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/li>\n\n\n\n<li><strong>Th\u1eed nghi\u1ec7m CAF (S\u1ee3i c\u1ef1c d\u01b0\u01a1ng d\u1eabn \u0111i\u1ec7n):<\/strong>\u00a0\u0110\u1ed1i v\u1edbi c\u00e1c m\u00f4i tr\u01b0\u1eddng c\u00f3 \u0111i\u1ec7n \u00e1p cao ho\u1eb7c \u0111\u1ed9 \u1ea9m cao, th\u1eed nghi\u1ec7m n\u00e0y l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng. Th\u1eed nghi\u1ec7m n\u00e0y nh\u1eb1m ki\u1ec3m tra s\u1ef1 h\u00ecnh th\u00e0nh c\u00e1c mu\u1ed1i \u0111\u1ed3ng gi\u1eefa c\u00e1c d\u00e2y d\u1eabn. C\u00e1c v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (TG) s\u1edf h\u1eefu h\u1ec7 th\u1ed1ng nh\u1ef1a c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i hi\u1ec7n t\u01b0\u1ee3ng CAF t\u1ed1t h\u01a1n. \u0110\u00e2y l\u00e0 y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c \u0111\u1ed1i v\u1edbi c\u00e1c b\u1ed9 ngu\u1ed3n ho\u1eb7c h\u1ea1 t\u1ea7ng vi\u1ec5n th\u00f4ng.<\/li>\n<\/ul>\n\n\n\n<p><strong>Cu\u1ed1i c\u00f9ng, h\u00e3y xem x\u00e9t ch\u1ea5t l\u01b0\u1ee3ng li\u00ean k\u1ebft d\u1ef1a tr\u00ean m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng cu\u1ed1i c\u00f9ng.<\/strong>&nbsp;H\u1ec7 th\u1ed1ng ph\u00e2n lo\u1ea1i IPC quy \u0111\u1ecbnh \u0111i\u1ec1u n\u00e0y.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Lo\u1ea1i 2 theo ti\u00eau chu\u1ea9n IPC (S\u1ea3n ph\u1ea9m \u0111i\u1ec7n t\u1eed th\u00f4ng th\u01b0\u1eddng):<\/strong>\u00a0H\u1ea7u h\u1ebft c\u00e1c m\u1eb7t h\u00e0ng ti\u00eau d\u00f9ng \u0111\u1ec1u thu\u1ed9c nh\u00f3m n\u00e0y. C\u00e1c y\u00eau c\u1ea7u v\u1ec1 th\u1eed nghi\u1ec7m nhi\u1ec7t c\u00f3 th\u1ec3 kh\u00f4ng kh\u1eaft khe b\u1eb1ng. Tuy nhi\u00ean, vi\u1ec7c s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-TG) cho c\u00e1c m\u1ea1ch in kh\u00f4ng ch\u1ee9a ch\u00ec v\u1eabn l\u00e0 l\u1ef1a ch\u1ecdn h\u1ee3p l\u00fd \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady c\u1ea5p 2.<\/li>\n\n\n\n<li><strong>Lo\u1ea1i 3 theo ti\u00eau chu\u1ea9n IPC (Thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed c\u00f3 \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t cao):<\/strong>\u00a0\u0110i\u1ec1u n\u00e0y \u00e1p d\u1ee5ng cho c\u00e1c h\u1ec7 th\u1ed1ng \u00f4 t\u00f4, h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, y t\u1ebf v\u00e0 qu\u00e2n s\u1ef1. Lo\u1ea1i 3 c\u00f3 c\u00e1c quy \u0111\u1ecbnh nghi\u00eam ng\u1eb7t v\u1ec1 vi\u1ec7c ki\u1ec3m tra v\u1eadt li\u1ec7u, \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 v\u00e0 m\u1ee9c \u0111\u1ed9 ch\u1ea5p nh\u1eadn khuy\u1ebft t\u1eadt. Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-TG) th\u01b0\u1eddng l\u00e0 m\u1ed9t\u00a0<em>y\u00eau c\u1ea7u<\/em>\u00a0\u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n v\u1ec1 hi\u1ec7u su\u1ea5t nhi\u1ec7t v\u00e0 c\u01a1 h\u1ecdc theo Lo\u1ea1i 3. Lu\u00f4n n\u00eau r\u00f5 Lo\u1ea1i IPC c\u1ee7a b\u1ea1n cho nh\u00e0 s\u1ea3n xu\u1ea5t.<\/li>\n<\/ul>\n\n\n\n<p><strong>Nh\u1eadn \u0111\u1ecbnh c\u1ee7a chuy\u00ean gia: \u201cB\u1eb1ng ch\u1ee9ng\u201d m\u00e0 b\u1ea1n nh\u1ea5t \u0111\u1ecbnh ph\u1ea3i y\u00eau c\u1ea7u.<\/strong>&nbsp;\u0110\u1eebng ch\u1ec9 tin v\u00e0o b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt. Tr\u01b0\u1edbc khi s\u1ea3n xu\u1ea5t, h\u00e3y y\u00eau c\u1ea7u nh\u00e0 s\u1ea3n xu\u1ea5t PCB cung c\u1ea5p ba t\u00e0i li\u1ec7u sau:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>The\u00a0<strong>Ch\u1ee9ng nh\u1eadn v\u1eadt li\u1ec7u<\/strong>\u00a0\u0111\u1ed1i v\u1edbi l\u00f4 s\u1ea3n ph\u1ea9m c\u1ee5 th\u1ec3 c\u1ee7a qu\u00fd v\u1ecb, hi\u1ec3n th\u1ecb c\u00e1c gi\u00e1 tr\u1ecb Tg\/Td th\u1ef1c t\u1ebf.<\/li>\n\n\n\n<li><strong>K\u1ebft qu\u1ea3 ki\u1ec3m tra T260\/T288<\/strong>\u00a0tr\u00ean m\u1ed9t m\u1eabu l\u1ea5y t\u1eeb b\u1ea3ng s\u1ea3n xu\u1ea5t c\u1ee7a h\u1ecd.<\/li>\n\n\n\n<li>\u0110\u1ed1i v\u1edbi c\u00e1c thi\u1ebft k\u1ebf quan tr\u1ecdng \u0111\u1ed1i v\u1edbi ho\u1ea1t \u0111\u1ed9ng, b\u1ea3n t\u00f3m t\u1eaft v\u1ec1\u00a0<strong>CAF ho\u1eb7c ki\u1ec3m \u0111\u1ecbnh chu tr\u00ecnh nhi\u1ec7t<\/strong>\u00a0\u0111\u1ed1i v\u1edbi v\u1eadt li\u1ec7u \u0111\u00e3 ch\u1ecdn. D\u1eef li\u1ec7u n\u00e0y gi\u00fap chuy\u1ec3n r\u1ee7i ro t\u1eeb ph\u00eda b\u1ea1n sang kh\u1ea3 n\u0103ng \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh c\u1ee7a v\u1eadt li\u1ec7u v\u00e0 quy tr\u00ecnh. \u0110i\u1ec1u n\u00e0y bi\u1ebfn chi ph\u00ed cao h\u01a1n th\u00e0nh m\u1ed9t kho\u1ea3n \u0111\u1ea7u t\u01b0 h\u1ee3p l\u00fd nh\u1eb1m \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"total-cost-of-ownership-and-procurement-strategy\"><strong>T\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu v\u00e0 chi\u1ebfn l\u01b0\u1ee3c mua s\u1eafm<\/strong><\/h2>\n\n\n\n<p>Vi\u1ec7c mua PCB c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-TG) kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 xem x\u00e9t b\u00e1o gi\u00e1. B\u1ea1n c\u1ea7n t\u00ednh \u0111\u1ebfn t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m t\u1ea5t c\u1ea3 c\u00e1c chi ph\u00ed t\u1eeb kh\u00e2u thi\u1ebft k\u1ebf cho \u0111\u1ebfn l\u1eafp r\u00e1p ho\u00e0n thi\u1ec7n. M\u1ed9t chi\u1ebfn l\u01b0\u1ee3c h\u1ee3p l\u00fd s\u1ebd gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 tr\u00e1nh \u0111\u01b0\u1ee3c s\u1ef1 ch\u1eadm tr\u1ec5.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"the-real-cost-breakdown\"><strong>Ph\u00e2n t\u00edch chi ti\u1ebft chi ph\u00ed th\u1ef1c t\u1ebf<\/strong><\/h3>\n\n\n\n<p>Tr\u01b0\u1edbc h\u1ebft, h\u00e3y hi\u1ec3u r\u00f5 m\u00ecnh \u0111ang tr\u1ea3 ti\u1ec1n cho \u0111i\u1ec1u g\u00ec. Gi\u00e1 \u0111\u01a1n v\u1ecb ch\u1ec9 l\u00e0 m\u1ed9t ph\u1ea7n trong \u0111\u00f3.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Ph\u1ee5 ph\u00ed chi ph\u00ed nguy\u00ean v\u1eadt li\u1ec7u:<\/strong>\u00a0C\u00e1c v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha (Tg) cao c\u00f3 gi\u00e1 th\u00e0nh cao h\u01a1n. FR-4 ti\u00eau chu\u1ea9n (Tg 140\u00b0C) l\u00e0 m\u1ee9c c\u01a1 b\u1ea3n. Vi\u1ec7c chuy\u1ec3n sang v\u1eadt li\u1ec7u c\u00f3 Tg 170\u00b0C c\u00f3 th\u1ec3 l\u00e0m t\u0103ng chi ph\u00ed t\u1ea5m laminate th\u00eam 20\u201330%. C\u00e1c v\u1eadt li\u1ec7u c\u00f3 Tg 180\u00b0C tr\u1edf l\u00ean nh\u01b0 IT-180A c\u00f3 th\u1ec3 l\u00e0m t\u0103ng th\u00eam 40\u201360%. C\u00e1c v\u1eadt li\u1ec7u chuy\u00ean d\u1ee5ng nh\u01b0 Rogers c\u00f2n \u0111\u1eaft h\u01a1n n\u1eefa. \u0110\u00e2y l\u00e0 m\u1ee9c t\u0103ng chi ph\u00ed \u0111\u1ea7u ti\u00ean c\u1ee7a b\u1ea1n.<\/li>\n\n\n\n<li><strong>Chi ph\u00ed quy tr\u00ecnh s\u1ea3n xu\u1ea5t:<\/strong>\u00a0C\u00e1c v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-TG) kh\u00f3 gia c\u00f4ng h\u01a1n. Ch\u00fang \u0111\u00f2i h\u1ecfi nhi\u1ec7t \u0111\u1ed9 \u00e9p cao h\u01a1n v\u00e0 chu k\u1ef3 \u00e9p d\u00e0i h\u01a1n. \u0110i\u1ec1u n\u00e0y ti\u00eau t\u1ed1n nhi\u1ec1u n\u0103ng l\u01b0\u1ee3ng v\u00e0 th\u1eddi gian s\u1ea3n xu\u1ea5t h\u01a1n. Ngo\u00e0i ra, c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 FR-4 High Tg r\u1ea5t c\u1ee9ng, d\u1eabn \u0111\u1ebfn m\u00e0i m\u00f2n m\u0169i khoan nhi\u1ec1u h\u01a1n. Nh\u00e0 s\u1ea3n xu\u1ea5t c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 t\u00ednh th\u00eam ph\u00ed t\u1eeb 10\u201315% \u0111\u1ec3 b\u00f9 \u0111\u1eafp cho vi\u1ec7c ph\u1ea3i thay m\u0169i khoan th\u01b0\u1eddng xuy\u00ean h\u01a1n v\u00e0 t\u1ed1c \u0111\u1ed9 khoan ch\u1eadm h\u01a1n.<\/li>\n\n\n\n<li><strong>Ki\u1ec3m th\u1eed v\u00e0 B\u1ea3o hi\u1ec3m \u0111\u1ed9 tin c\u1eady:<\/strong>\u00a0\u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng, b\u1ea1n c\u1ea7n c\u00f3 b\u1eb1ng ch\u1ee9ng v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng. C\u00e1c th\u1eed nghi\u1ec7m nh\u01b0 T260 (th\u1eddi gian t\u00e1ch l\u1edbp \u1edf 260\u00b0C) ho\u1eb7c kh\u1ea3 n\u0103ng ch\u1ed1ng CAF kh\u00f4ng ph\u1ea3i l\u00e0 mi\u1ec5n ph\u00ed. Vi\u1ec7c y\u00eau c\u1ea7u \u0111\u1ea1t ti\u00eau chu\u1ea9n IPC Class 3 (\u0111\u1ed9 tin c\u1eady cao) s\u1ebd l\u00e0m t\u0103ng chi ph\u00ed. Tuy nhi\u00ean, \u0111i\u1ec1u n\u00e0y gi\u00fap ng\u0103n ng\u1eeba c\u00e1c s\u1ef1 c\u1ed1 x\u1ea3y ra trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf. Chi ph\u00ed ph\u00e1t sinh t\u1eeb m\u1ed9t s\u1ef1 c\u1ed1 trong s\u1ea3n ph\u1ea9m \u00f4 t\u00f4 ho\u1eb7c h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 s\u1ebd cao h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi chi ph\u00ed c\u1ee7a th\u1eed nghi\u1ec7m n\u00e0y.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"smart-procurement-a-tiered-strategy\"><strong>Mua s\u1eafm th\u00f4ng minh: Chi\u1ebfn l\u01b0\u1ee3c theo t\u1eebng c\u1ea5p \u0111\u1ed9<\/strong><\/h3>\n\n\n\n<p>\u0110\u1eebng ch\u1ec9 \u0111\u01a1n thu\u1ea7n y\u00eau c\u1ea7u \u201cTG cao\u201d. H\u00e3y \u00e1p d\u1ee5ng chi\u1ebfn l\u01b0\u1ee3c theo t\u1eebng c\u1ea5p \u0111\u1ed9 \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u v\u00e0 ng\u00e2n s\u00e1ch c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>C\u1ea5p 1: Nhi\u1ec7t \u0111\u1ed9 150\u2013170\u00b0C d\u00e0nh cho s\u1ea3n ph\u1ea9m kh\u00f4ng ch\u1ee9a ch\u00ec d\u00f9ng trong ti\u00eau d\u00f9ng v\u00e0 c\u00f4ng nghi\u1ec7p.<\/strong>\u00a0S\u1ea3n ph\u1ea9m n\u00e0y ph\u00f9 h\u1ee3p cho c\u00e1c b\u1ea3ng m\u1ea1ch \u0111a l\u1edbp ti\u00eau chu\u1ea9n c\u1ea7n l\u1eafp r\u00e1p kh\u00f4ng ch\u00ec (RoHS). S\u1ea3n ph\u1ea9m ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec9nh trong qu\u00e1 tr\u00ecnh h\u00e0n n\u00f3ng ch\u1ea3y kho\u1ea3ng 260\u00b0C. S\u1ea3n ph\u1ea9m mang l\u1ea1i \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh cao h\u01a1n so v\u1edbi FR-4 ti\u00eau chu\u1ea9n m\u00e0 kh\u00f4ng l\u00e0m t\u0103ng chi ph\u00ed \u0111\u00e1ng k\u1ec3. \u0110\u00e2y l\u00e0 s\u1ea3n ph\u1ea9m ch\u1ee7 l\u1ef1c ti\u1ebft ki\u1ec7m chi ph\u00ed d\u00e0nh cho b\u1ea1n.<\/li>\n\n\n\n<li><strong>C\u1ea5p 2: Nhi\u1ec7t \u0111\u1ed9 170\u2013180\u00b0C d\u00e0nh cho ng\u00e0nh \u00f4 t\u00f4 v\u00e0 v\u1eadt li\u1ec7u m\u1eadt \u0111\u1ed9 cao.<\/strong>\u00a0H\u00e3y l\u1ef1a ch\u1ecdn s\u1ea3n ph\u1ea9m n\u00e0y cho c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m c\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1 ho\u1eb7c c\u00e1c thi\u1ebft k\u1ebf HDI t\u1eeb 8 l\u1edbp tr\u1edf l\u00ean. Gi\u00e1 tr\u1ecb Tg cao h\u01a1n gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t theo tr\u1ee5c Z. \u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1ea3m \u00e1p l\u1ef1c l\u00ean c\u00e1c l\u1ed7 m\u1ea1 tr\u00ean b\u1ea3ng m\u1ea1ch nhi\u1ec1u l\u1edbp. \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i trong \u0111i\u1ec1u ki\u1ec7n thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 li\u00ean t\u1ee5c. Gi\u00e1 th\u00e0nh c\u1ee7a s\u1ea3n ph\u1ea9m n\u00e0y s\u1ebd cao h\u01a1n \u0111\u00e1ng k\u1ec3.<\/li>\n\n\n\n<li><strong>C\u1ea5p 3: Nhi\u1ec7t \u0111\u1ed9 l\u00e0m vi\u1ec7c 180\u00b0C tr\u1edf l\u00ean \/ Chuy\u00ean d\u1ee5ng cho \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c kh\u1eafc nghi\u1ec7t.<\/strong>\u00a0H\u00e3y d\u00e0nh lo\u1ea1i v\u1eadt li\u1ec7u n\u00e0y cho nh\u1eefng c\u00f4ng vi\u1ec7c \u0111\u00f2i h\u1ecfi kh\u1eaft khe nh\u1ea5t. V\u00ed d\u1ee5 nh\u01b0 c\u00e1c b\u1ea3ng m\u1ea1ch RF ho\u1eb7c t\u1ed1c \u0111\u1ed9 cao c\u1ea7n ch\u1ec9 s\u1ed1 Dk\/Df \u1ed5n \u0111\u1ecbnh, ho\u1eb7c c\u00e1c \u1ee9ng d\u1ee5ng trong ng\u00e0nh h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u1edbi chu k\u1ef3 ho\u1ea1t \u0111\u1ed9ng kh\u1eafc nghi\u1ec7t. C\u00e1c v\u1eadt li\u1ec7u nh\u01b0 Rogers 4350B ho\u1eb7c Isola P95 thu\u1ed9c nh\u00f3m n\u00e0y. M\u1eb7c d\u00f9 chi ph\u00ed cao, nh\u01b0ng \u0111\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn duy nh\u1ea5t cho nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0y.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"expert-procurement-steps\"><strong>C\u00e1c b\u01b0\u1edbc mua s\u1eafm chuy\u00ean nghi\u1ec7p<\/strong><\/h3>\n\n\n\n<p>H\u00e3y l\u00e0m theo c\u00e1c b\u01b0\u1edbc sau \u0111\u1ec3 mua s\u1eafm th\u00f4ng minh.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Chia s\u1ebb th\u00f4ng tin chi ti\u1ebft ngay t\u1eeb s\u1edbm:<\/strong>\u00a0H\u00e3y cung c\u1ea5p cho nh\u00e0 s\u1ea3n xu\u1ea5t th\u00f4ng tin \u0111\u1ea7y \u0111\u1ee7. H\u00e3y chia s\u1ebb s\u1ed1 l\u1edbp, \u0111\u1ed9 d\u00e0y m\u1ee5c ti\u00eau, nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng v\u00e0 h\u1ed3 s\u01a1 nhi\u1ec7t \u0111\u1ed9 nung l\u1ea1i trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p. \u0110i\u1ec1u n\u00e0y gi\u00fap h\u1ecd \u0111\u1ec1 xu\u1ea5t lo\u1ea1i v\u1eadt li\u1ec7u c\u00f3 hi\u1ec7u qu\u1ea3 chi ph\u00ed cao nh\u1ea5t. M\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t gi\u1ecfi th\u01b0\u1eddng c\u00f3 th\u1ec3 t\u00ecm ra gi\u1ea3i ph\u00e1p c\u00f3 Tg 170 trong khi b\u1ea1n c\u00f3 th\u1ec3 y\u00eau c\u1ea7u lo\u1ea1i Tg 180 \u0111\u1eaft ti\u1ec1n h\u01a1n.<\/li>\n\n\n\n<li><strong>Y\u00eau c\u1ea7u cung c\u1ea5p d\u1eef li\u1ec7u quan tr\u1ecdng:<\/strong>\u00a0Y\u00eau c\u1ea7u b\u1eb1ng ch\u1ee9ng. \u0110\u1eebng ch\u1ec9 tin v\u00e0o t\u00ean c\u1ee7a v\u1eadt li\u1ec7u. H\u00e3y y\u00eau c\u1ea7u\u00a0<strong>B\u1ea3ng d\u1eef li\u1ec7u v\u1eadt li\u1ec7u IPC-4101<\/strong>\u00a0t\u1eeb nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e1n \u00e9p. Tr\u00ean \u0111\u00f3 ph\u1ea3i ghi r\u00f5\u00a0<strong>Tg, Td (Nhi\u1ec7t \u0111\u1ed9 ph\u00e2n h\u1ee7y) v\u00e0 CTE<\/strong>. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady, h\u00e3y y\u00eau c\u1ea7u\u00a0<strong>K\u1ebft qu\u1ea3 ki\u1ec3m tra T260\/T288<\/strong>\u00a0v\u00e0\u00a0<strong>D\u1eef li\u1ec7u v\u1ec1 t\u00ednh kh\u00e1ng thu\u1ed1c c\u1ee7a CAF<\/strong>. D\u1eef li\u1ec7u n\u00e0y ch\u00ednh l\u00e0 b\u1ea3o \u0111\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng cho b\u1ea1n.<\/li>\n\n\n\n<li><strong>Thi\u1ebft k\u1ebf h\u01b0\u1edbng t\u1edbi s\u1ea3n xu\u1ea5t (DFM):<\/strong>\u00a0Nh\u1eefng l\u1ef1a ch\u1ecdn thi\u1ebft k\u1ebf nh\u1ecf c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn chi ph\u00ed. V\u1edbi v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-TG), n\u1ebfu c\u00f3 th\u1ec3, h\u00e3y tr\u00e1nh s\u1eed d\u1ee5ng c\u00e1c l\u1ed7 c\u00f3 k\u00edch th\u01b0\u1edbc qu\u00e1 nh\u1ecf. Ch\u00fang l\u00e0m t\u0103ng m\u1ee9c \u0111\u1ed9 m\u00e0i m\u00f2n c\u1ee7a m\u0169i khoan. H\u00e3y l\u00ean k\u1ebf ho\u1ea1ch c\u1ea5u tr\u00fac l\u1edbp v\u1eadt li\u1ec7u c\u00f9ng v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t. M\u1ed9t c\u1ea5u tr\u00fac l\u1edbp \u0111\u1ed1i x\u1ee9ng v\u00e0 c\u00e2n b\u1eb1ng s\u1ebd d\u1ec5 d\u00e0ng h\u01a1n trong qu\u00e1 tr\u00ecnh \u00e9p l\u1edbp. \u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1ea3m nguy c\u01a1 cong v\u00eanh v\u00e0 xo\u1eafn, t\u1eeb \u0111\u00f3 ti\u1ebft ki\u1ec7m chi ph\u00ed do s\u1ea3n ph\u1ea9m b\u1ecb lo\u1ea1i.<\/li>\n<\/ol>\n\n\n\n<p>Cu\u1ed1i c\u00f9ng, h\u00e3y nh\u1edb r\u1eb1ng chi ph\u00ed l\u1edbn nh\u1ea5t ch\u00ednh l\u00e0 s\u1ef1 th\u1ea5t b\u1ea1i. M\u1ea1ch in (PCB) c\u00f3 ch\u1ec9 s\u1ed1 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha (TG) cao ph\u00f9 h\u1ee3p s\u1ebd c\u00f3 gi\u00e1 cao h\u01a1n ban \u0111\u1ea7u. Tuy nhi\u00ean, n\u00f3 gi\u00fap ng\u0103n ng\u1eeba c\u00e1c s\u1ef1 c\u1ed1 trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng, vi\u1ec7c tr\u1ea3 h\u00e0ng b\u1ea3o h\u00e0nh v\u00e0 t\u1ed5n h\u1ea1i \u0111\u1ebfn th\u01b0\u01a1ng hi\u1ec7u. Chi\u1ebfn l\u01b0\u1ee3c mua s\u1eafm c\u1ee7a b\u1ea1n ph\u1ea3i c\u00e2n b\u1eb1ng gi\u1eefa gi\u00e1 ban \u0111\u1ea7u v\u1edbi t\u1ed5ng chi ph\u00ed v\u00f2ng \u0111\u1eddi v\u00e0 r\u1ee7i ro.<\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction: The High-TG PCB Strategic Imperative Your product&#8217;s reliability can depend on a single,&nbsp;hidden number:&nbsp;the Glass Transition Temperature&nbsp;(Tg). If this 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