{"id":4952,"date":"2026-05-19T08:48:28","date_gmt":"2026-05-19T08:48:28","guid":{"rendered":"https:\/\/flj-pcb.com\/?page_id=4952"},"modified":"2026-05-19T09:02:57","modified_gmt":"2026-05-19T09:02:57","slug":"lead-free-pcb-assembly-rohs-guide","status":"publish","type":"page","link":"https:\/\/flj-pcb.com\/vi\/lead-free-pcb-assembly-rohs-guide\/","title":{"rendered":"L\u1eafp r\u00e1p b\u1ea3ng m\u1ea1ch in kh\u00f4ng ch\u00ec: H\u01b0\u1edbng d\u1eabn s\u1ea3n xu\u1ea5t tu\u00e2n th\u1ee7 RoHS"},"content":{"rendered":"<p><strong>Gi\u1edbi thi\u1ec7u<\/strong><br>L\u1eafp r\u00e1p PCB kh\u00f4ng ch\u00ec kh\u00f4ng c\u00f2n l\u00e0 s\u1ef1 l\u1ef1a ch\u1ecdn n\u1eefa \u2014 \u0111\u00f3 \u0111\u00e3 tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n c\u1ee7a ng\u00e0nh. Ch\u1ec9 th\u1ecb RoHS c\u1ee7a EU nghi\u00eam ng\u1eb7t gi\u1edbi h\u1ea1n h\u00e0m l\u01b0\u1ee3ng ch\u00ec d\u01b0\u1edbi 0,11% theo tr\u1ecdng l\u01b0\u1ee3ng trong m\u1ed7i v\u1eadt li\u1ec7u \u0111\u1ed3ng nh\u1ea5t, v\u00e0 c\u00e1c quy \u0111\u1ecbnh t\u01b0\u01a1ng t\u1ef1 hi\u1ec7n \u0111\u00e3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. \u0110\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 ph\u1ea7n c\u1ee9ng v\u00e0 \u0111\u1ed9i ng\u0169 mua s\u1eafm, vi\u1ec7c n\u1eafm v\u1eefng c\u00e1c quy tr\u00ecnh kh\u00f4ng ch\u00ec c\u00f3 ngh\u0129a l\u00e0 b\u1ea1n c\u00f3 th\u1ec3 xu\u1ea5t kh\u1ea9u s\u1ea3n ph\u1ea9m ra to\u00e0n c\u1ea7u m\u00e0 kh\u00f4ng g\u1eb7p tr\u1edf ng\u1ea1i v\u1ec1 tu\u00e2n th\u1ee7. Tuy nhi\u00ean, l\u1eafp r\u00e1p kh\u00f4ng ch\u00ec mang l\u1ea1i nh\u1eefng th\u00e1ch th\u1ee9c k\u1ef9 thu\u1eadt th\u1ef1c s\u1ef1: nhi\u1ec7t \u0111\u1ed9 h\u00e0n cao h\u01a1n, h\u00e0nh vi th\u1ea5m \u01b0\u1edbt c\u1ee7a h\u1ee3p kim kh\u00e1c nhau v\u00e0 y\u00eau c\u1ea7u l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u1ea9n th\u1eadn.<\/p>\n\n\n\n<p>\u0110\u1ed9i ng\u0169 c\u1ee7a ch\u00fang t\u00f4i c\u00f3 h\u01a1n 15 n\u0103m kinh nghi\u1ec7m th\u1ef1c ti\u1ec5n trong l\u0129nh v\u1ef1c s\u1ea3n xu\u1ea5t kh\u00f4ng ch\u00ec. Ch\u00fang t\u00f4i s\u1edf h\u1eefu <a href=\"https:\/\/www.iso.org\/standard\/62085.html\" target=\"_blank\" rel=\"noopener\">ISO 9001 <\/a>c\u00f9ng c\u00e1c ch\u1ee9ng nh\u1eadn UL, v\u00e0 ch\u00fang t\u00f4i \u0111\u00e3 th\u1ef1c hi\u1ec7n h\u00e0ng ngh\u00ecn d\u1ef1 \u00e1n s\u1ea3n xu\u1ea5t tu\u00e2n th\u1ee7 RoHS \u2014 t\u1eeb c\u00e1c m\u1eabu th\u1eed nghi\u1ec7m s\u1ea3n xu\u1ea5t nhanh \u0111\u1ebfn c\u00e1c l\u00f4 s\u1ea3n ph\u1ea9m \u00f4 t\u00f4 quy m\u00f4 l\u1edbn. Trong h\u01b0\u1edbng d\u1eabn n\u00e0y, b\u1ea1n s\u1ebd t\u00ecm hi\u1ec3u nh\u1eefng ki\u1ebfn th\u1ee9c m\u00e0 m\u1ecdi nh\u00e0 thi\u1ebft k\u1ebf PCB v\u00e0 k\u1ef9 s\u01b0 quy tr\u00ecnh c\u1ea7n n\u1eafm v\u1eefng v\u1ec1 l\u1eafp r\u00e1p kh\u00f4ng ch\u00ec: c\u00e1c quy tr\u00ecnh h\u00e0n ch\u00ednh, l\u1ef1a ch\u1ecdn h\u1ee3p kim, s\u1ef1 c\u00e2n nh\u1eafc gi\u1eefa c\u00e1c lo\u1ea1i b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n, quy t\u1eafc thi\u1ebft k\u1ebf v\u00e0 ph\u01b0\u01a1ng ph\u00e1p kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1. B\u1ea1n c\u0169ng s\u1ebd t\u00ecm th\u1ea5y d\u1eef li\u1ec7u chi ph\u00ed th\u1ef1c t\u1ebf v\u00e0 c\u00e1c ti\u00eau ch\u00ed ki\u1ec3m tra d\u1ef1a tr\u00ean ti\u00eau chu\u1ea9n IPC m\u00e0 kh\u00f4ng b\u00e0i vi\u1ebft n\u00e0o c\u1ee7a \u0111\u1ed1i th\u1ee7 c\u1ea1nh tranh \u0111\u1ec1 c\u1eadp \u0111\u1ebfn. H\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-a89b3969 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button spectra-popup-trigger-4901\"><a class=\"wp-block-button__link wp-element-button\">Nh\u1eadn b\u00e1o gi\u00e1 PCBA tr\u1ecdn g\u00f3i nhanh ch\u00f3ng<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">L\u1eafp r\u00e1p PCB kh\u00f4ng ch\u00ec l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p>L\u1eafp r\u00e1p PCB kh\u00f4ng ch\u00ec c\u00f3 ngh\u0129a l\u00e0 ch\u1ebf t\u1ea1o b\u1ea3ng m\u1ea1ch in b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c h\u1ee3p kim h\u00e0n kh\u00f4ng ch\u1ee9a ch\u00ec. Trong h\u1ee3p kim h\u00e0n truy\u1ec1n th\u1ed1ng Sn63\/Pb37, \u0111i\u1ec3m n\u00f3ng ch\u1ea3y eutectic l\u00e0 183\u00b0C. C\u00e1c l\u1ef1a ch\u1ecdn kh\u00f4ng ch\u00ec, ch\u1ee7 y\u1ebfu d\u1ef1a tr\u00ean thi\u1ebfc, b\u1ea1c v\u00e0 \u0111\u1ed3ng (SAC), c\u00f3 nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y cao h\u01a1n nhi\u1ec1u \u2014 kho\u1ea3ng 217\u2013221\u00b0C. \u0110i\u1ec1u n\u00e0y bu\u1ed9c to\u00e0n b\u1ed9 quy tr\u00ecnh l\u1eafp r\u00e1p ph\u1ea3i di\u1ec5n ra \u1edf nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n 30\u201340\u00b0C so v\u1edbi h\u1ed3 s\u01a1 nhi\u1ec7t \u0111\u1ed9 h\u00e0n l\u1ea1i ch\u00ec c\u0169.<\/p>\n\n\n\n<p>Quy tr\u00ecnh l\u1eafp r\u00e1p v\u1eabn t\u01b0\u01a1ng t\u1ef1 nh\u01b0 tr\u01b0\u1edbc: in keo h\u00e0n, \u0111\u1eb7t linh ki\u1ec7n, h\u00e0n n\u00f3ng ch\u1ea3y (ho\u1eb7c h\u00e0n s\u00f3ng \u0111\u1ed1i v\u1edbi c\u00e1c linh ki\u1ec7n l\u1ed7 xuy\u00ean), v\u00e0 ki\u1ec3m tra quang h\u1ecdc t\u1ef1 \u0111\u1ed9ng (AOI) k\u1ebft h\u1ee3p v\u1edbi tia X \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c m\u1ed1i h\u00e0n \u1ea9n. Nh\u1eefng thay \u0111\u1ed5i ch\u1ee7 y\u1ebfu n\u1eb1m \u1edf ng\u00e2n s\u00e1ch nhi\u1ec7t, th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1eadt li\u1ec7u v\u00e0 y\u00eau c\u1ea7u ki\u1ec3m so\u00e1t quy tr\u00ecnh ch\u1eb7t ch\u1ebd h\u01a1n. Ngay c\u1ea3 vi\u1ec7c duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 tr\u00ean \u0111i\u1ec3m n\u00f3ng ch\u1ea3y th\u00eam 5 gi\u00e2y c\u0169ng c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c h\u1ee3p ch\u1ea5t kim lo\u1ea1i gi\u00f2n v\u00e0 l\u00e0m gi\u1ea3m \u0111\u1ed9 tin c\u1eady c\u1ee7a m\u1ed1i h\u00e0n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c tu\u00e2n th\u1ee7 RoHS trong l\u1eafp r\u00e1p kh\u00f4ng ch\u00ec<\/h2>\n\n\n\n<p>Ch\u1ec9 th\u1ecb RoHS (H\u1ea1n ch\u1ebf s\u1eed d\u1ee5ng c\u00e1c ch\u1ea5t \u0111\u1ed9c h\u1ea1i) c\u00f3 hi\u1ec7u l\u1ef1c t\u1eeb n\u0103m 2006 v\u00e0 hi\u1ec7n nay \u00e1p d\u1ee5ng cho g\u1ea7n nh\u01b0 to\u00e0n b\u1ed9 c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng v\u00e0 c\u00f4ng nghi\u1ec7p. Ch\u1ec9 th\u1ecb n\u00e0y quy \u0111\u1ecbnh h\u00e0m l\u01b0\u1ee3ng ch\u00ec t\u1ed1i \u0111a l\u00e0 1000 ppm (0,11%) v\u00e0 c\u0169ng h\u1ea1n ch\u1ebf vi\u1ec7c s\u1eed d\u1ee5ng th\u1ee7y ng\u00e2n, cadmium, crom h\u00f3a tr\u1ecb s\u00e1u, c\u00f9ng hai nh\u00f3m ch\u1ea5t ch\u1ed1ng ch\u00e1y. C\u00e1c s\u1ea3n ph\u1ea9m kh\u00f4ng tu\u00e2n th\u1ee7 s\u1ebd ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi c\u00e1c h\u00ecnh th\u1ee9c x\u1eed ph\u1ea1t, b\u1ecb t\u1eeb ch\u1ed1i nh\u1eadp kh\u1ea9u v\u00e0 c\u1ea5m l\u01b0u h\u00e0nh tr\u00ean th\u1ecb tr\u01b0\u1eddng.<\/p>\n\n\n\n<p>Tuy nhi\u00ean, vi\u1ec7c tu\u00e2n th\u1ee7 RoHS kh\u00f4ng ch\u1ec9 nh\u1eb1m m\u1ee5c \u0111\u00edch tr\u00e1nh b\u1ecb ph\u1ea1t. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng gi\u00fap c\u1ea3i thi\u1ec7n chu\u1ed7i cung \u1ee9ng c\u1ee7a b\u1ea1n: hi\u1ec7n nay, nhi\u1ec1u nh\u00e0 cung c\u1ea5p linh ki\u1ec7n ch\u1ec9 cung c\u1ea5p c\u00e1c b\u1ed9 ph\u1eadn \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn RoHS. N\u1ebfu b\u1ea1n v\u1eabn s\u1eed d\u1ee5ng xen k\u1ebd c\u00e1c qu\u1ea3 c\u1ea7u BGA ch\u1ee9a ch\u00ec v\u00e0 kh\u00f4ng ch\u1ee9a ch\u00ec, b\u1ea1n s\u1ebd \u0111\u1ed1i m\u1eb7t v\u1edbi nguy c\u01a1 x\u1ea3y ra s\u1ef1 kh\u00f4ng t\u01b0\u01a1ng th\u00edch d\u1eabn \u0111\u1ebfn l\u1ed7i s\u1ea3n ph\u1ea9m v\u00e0 h\u1ecfng h\u00f3c trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng. Vi\u1ec7c tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh v\u1ec1 v\u1eadt li\u1ec7u m\u1ed9t c\u00e1ch \u0111\u00fang \u0111\u1eafn b\u1eaft \u0111\u1ea7u t\u1eeb c\u00e1c t\u1ec7p thi\u1ebft k\u1ebf v\u00e0 k\u1ebft th\u00fac b\u1eb1ng vi\u1ec7c ki\u1ec3m tra b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p hu\u1ef3nh quang tia X (XRF) \u0111\u1ed1i v\u1edbi t\u1eebng l\u00f4 h\u00e0ng nh\u1eadp v\u1ec1. <a href=\"https:\/\/flj-pcb.com\/vi\/about\/\" data-type=\"link\" data-id=\"https:\/\/flj-pcb.com\/about\/\">Nh\u00e0 m\u00e1y c\u1ee7a ch\u00fang t\u00f4i <\/a>s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 XRF \u0111\u1ec3 x\u00e1c minh r\u1eb1ng c\u00e1c \u0111\u1ea7u n\u1ed1i linh ki\u1ec7n v\u00e0 b\u1ea3ng m\u1ea1ch in tr\u1ea7n \u0111\u00e1p \u1ee9ng gi\u1edbi h\u1ea1n &lt;0,11 TP3T tr\u01b0\u1edbc l\u1ea7n in b\u1ed9t h\u00e0n \u0111\u1ea7u ti\u00ean.<\/p>\n\n\n\n<p>M\u1ed9t b\u01b0\u1edbc ki\u1ec3m tra n\u1ed9i b\u1ed9 h\u1eefu \u00edch: h\u00e3y y\u00eau c\u1ea7u nh\u00e0 cung c\u1ea5p PCB cung c\u1ea5p Gi\u1ea5y ch\u1ee9ng nh\u1eadn tu\u00e2n th\u1ee7 (CoC) v\u00e0 b\u1ea3n k\u00ea khai v\u1eadt li\u1ec7u \u0111\u1ea7y \u0111\u1ee7 (FMD) cho v\u1eadt li\u1ec7u n\u1ec1n, l\u1edbp ph\u1ee7 ch\u1ed1ng h\u00e0n v\u00e0 l\u1edbp ho\u00e0n thi\u1ec7n cu\u1ed1i c\u00f9ng. \u0110\u1eebng ch\u1ec9 d\u1ef1a v\u00e0o c\u00e1c nh\u00e3n \u201cTu\u00e2n th\u1ee7 RoHS\u201d.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">N\u1eafm v\u1eefng quy tr\u00ecnh HASL kh\u00f4ng ch\u00ec: Ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 quy tr\u00ecnh<\/h2>\n\n\n\n<p>Ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 \u0111\u1ed3ng b\u1eb1ng kh\u00ed n\u00f3ng (HASL) s\u1eed d\u1ee5ng h\u1ee3p kim kh\u00f4ng ch\u00ec v\u1eabn l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t ph\u1ed5 bi\u1ebfn v\u00e0 chi ph\u00ed th\u1ea5p. Tuy nhi\u00ean, quy tr\u00ecnh n\u00e0y \u0111\u00f2i h\u1ecfi s\u1ef1 ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c v\u00ec h\u1ee3p kim SAC n\u00f3ng ch\u1ea3y duy tr\u00ec \u1edf nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n nhi\u1ec1u so v\u1edbi 260\u00b0C. Ngay c\u1ea3 vi\u1ec7c nhi\u1ec7t \u0111\u1ed9 v\u01b0\u1ee3t qu\u00e1 m\u1ee9c cho ph\u00e9p trong th\u1eddi gian ng\u1eafn c\u0169ng c\u00f3 th\u1ec3 g\u00e2y h\u01b0 h\u1ecfng cho t\u1ea5m n\u1ec1n PCB. C\u00e1c b\u01b0\u1edbc ch\u00ednh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>V\u1ec7 sinh:<\/strong>\u00a0Lo\u1ea1i b\u1ecf h\u1ebft c\u00e1c oxit v\u00e0 t\u1ea1p ch\u1ea5t tr\u00ean b\u1ec1 m\u1eb7t \u0111\u1ed3ng. Ph\u01b0\u01a1ng ph\u00e1p th\u00f4ng th\u01b0\u1eddng l\u00e0 s\u1eed d\u1ee5ng dung d\u1ecbch natri persulfat ho\u1eb7c peroxit sunfuric \u0111\u1ec3 \u0103n m\u00f2n vi m\u00f4. B\u1ec1 m\u1eb7t s\u1ea1ch s\u1ebd \u0111\u1ea3m b\u1ea3o l\u1edbp h\u00e0n \u0111\u01b0\u1ee3c ph\u1ee7 \u0111\u1ec1u.<\/li>\n\n\n\n<li><strong>\u1ee8ng d\u1ee5ng Flux:<\/strong>\u00a0S\u1eed d\u1ee5ng ch\u1ea5t tr\u1ee3 h\u00e0n kh\u00f4ng c\u1ea7n r\u1eeda ho\u1eb7c h\u00f2a tan trong n\u01b0\u1edbc, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u00e0nh ri\u00eang cho h\u1ee3p kim kh\u00f4ng ch\u00ec. C\u00e1c lo\u1ea1i ch\u1ea5t tr\u1ee3 h\u00e0n n\u00e0y c\u00f3 nhi\u1ec7t \u0111\u1ed9 k\u00edch ho\u1ea1t cao h\u01a1n \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n c\u1ee7a b\u1ec3 h\u00e0n. Vi\u1ec7c ph\u1ee7 \u0111\u1ec1u ch\u1ea5t tr\u1ee3 h\u00e0n gi\u00fap ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng t\u00e1ch \u01b0\u1edbt v\u00e0 h\u00ecnh th\u00e0nh c\u00e1c h\u1ea1t h\u00e0n.<\/li>\n\n\n\n<li><strong>Nh\u00fang h\u00e0n:<\/strong>\u00a0B\u1ea3ng m\u1ea1ch \u0111\u01b0\u1ee3c nh\u00fang th\u1eb3ng \u0111\u1ee9ng v\u00e0o b\u1ec3 ch\u1ee9a h\u1ee3p kim kh\u00f4ng ch\u00ec n\u00f3ng ch\u1ea3y, th\u01b0\u1eddng l\u00e0 SAC305 ho\u1eb7c SnCu0.7Ni. Th\u1eddi gian nh\u00fang l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh: 2\u20134 gi\u00e2y \u1edf nhi\u1ec7t \u0111\u1ed9 260\u2013270\u00b0C \u0111\u1ed1i v\u1edbi SAC305. Th\u1eddi gian ti\u1ebfp x\u00fac k\u00e9o d\u00e0i s\u1ebd l\u00e0m t\u0103ng nguy c\u01a1 xu\u1ea5t hi\u1ec7n v\u1ebft s\u1ea7n v\u00e0 bong tr\u00f3c l\u1edbp, \u0111\u1eb7c bi\u1ec7t l\u00e0 tr\u00ean v\u1eadt li\u1ec7u FR-4 ti\u00eau chu\u1ea9n.<\/li>\n\n\n\n<li><strong>L\u00e0m ph\u1eb3ng b\u1eb1ng kh\u00ed n\u00f3ng<\/strong>: C\u00e1c l\u01b0\u1ee1i dao kh\u00ed n\u00f3ng \u00e1p su\u1ea5t cao th\u1ed5i bay l\u01b0\u1ee3ng h\u00e0n th\u1eeba kh\u1ecfi c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac, t\u1ea1o ra b\u1ec1 m\u1eb7t ph\u1eb3ng. \u0110\u1ed1i v\u1edbi l\u1edbp m\u1ea1 HASL kh\u00f4ng ch\u00ec, nhi\u1ec7t \u0111\u1ed9 c\u1ee7a l\u01b0\u1ee1i dao kh\u00ed ph\u1ea3i duy tr\u00ec \u1edf m\u1ee9c cao h\u01a1n \u0111i\u1ec3m n\u00f3ng ch\u1ea3y c\u1ee7a h\u1ee3p kim \u0111\u1ec3 tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng k\u1ebft t\u1ee7a tr\u00ean l\u01b0\u1ee1i dao. \u0110\u1ed9 d\u00e0y dao \u0111\u1ed9ng th\u00f4ng th\u01b0\u1eddng l\u00e0 20\u201330 \u00b5m. M\u1ee9c \u0111\u1ed9 ph\u1eb3ng n\u00e0y l\u00e0 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ed1i v\u1edbi kho\u1ea3ng c\u00e1ch ch\u00e2n c\u1eafm \u22650,65 mm; \u0111\u1ed1i v\u1edbi c\u00e1c kho\u1ea3ng c\u00e1ch ch\u00e2n c\u1eafm nh\u1ecf h\u01a1n, ch\u00fang t\u00f4i khuy\u1ebfn ngh\u1ecb s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb m\u1ea1 HASL theo ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p ho\u00e0n thi\u1ec7n kh\u00e1c.<\/li>\n\n\n\n<li><strong>L\u00e0m m\u00e1t v\u00e0 ki\u1ec3m tra:<\/strong>\u00a0Qu\u00e1 tr\u00ecnh l\u00e0m m\u00e1t nhanh nh\u01b0ng c\u00f3 ki\u1ec3m so\u00e1t (2\u20134\u00b0C\/s) gi\u00fap ng\u0103n ng\u1eeba s\u1ef1 h\u00ecnh th\u00e0nh c\u00e1c h\u1ea1t IMC l\u1edbn. Ki\u1ec3m tra cu\u1ed1i c\u00f9ng bao g\u1ed3m \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 ph\u1eb3ng c\u1ee7a t\u1ea5m m\u1ea1ch, \u0111\u1ed9 ph\u1ee7 c\u1ee7a ch\u1ea5t h\u00e0n, c\u0169ng nh\u01b0 vi\u1ec7c kh\u00f4ng c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng \u201cb\u0103ng nh\u1ecdn\u201d hay ch\u1eadp m\u1ea1ch. Ch\u00fang t\u00f4i s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng AOI 100% sau qu\u00e1 tr\u00ecnh HASL v\u00e0 ti\u1ebfp t\u1ee5c s\u1eed d\u1ee5ng sau khi l\u1eafp \u0111\u1eb7t linh ki\u1ec7n.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"750\" height=\"562\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/05\/Lead\u2011Free-HASL-Process.webp\" alt=\"Lead\u2011Free HASL Process\" class=\"wp-image-4953\" srcset=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/05\/Lead\u2011Free-HASL-Process.webp 750w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/05\/Lead\u2011Free-HASL-Process-300x225.webp 300w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/05\/Lead\u2011Free-HASL-Process-16x12.webp 16w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">H\u1ee3p kim h\u00e0n kh\u00f4ng ch\u00ec: V\u01b0\u1ee3t xa ti\u00eau chu\u1ea9n SAC305<\/h2>\n\n\n\n<p>SAC305 (Sn96,5\/Ag3,0\/Cu0,5) l\u00e0 h\u1ee3p kim \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t, nh\u01b0ng kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t nh\u1ea5t. B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y t\u00f3m t\u1eaft c\u00e1c h\u1ee3p kim kh\u00f4ng ch\u00ec th\u00f4ng d\u1ee5ng v\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a ch\u00fang.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>H\u1ee3p kim<\/th><th>Ph\u1ea1m vi n\u00f3ng ch\u1ea3y<\/th><th>Thu\u1ed9c t\u00ednh ch\u00ednh<\/th><th>\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/th><\/tr><\/thead><tbody><tr><td>SAC305 (SnAg\u2083Cu\u2080,\u2085)<\/td><td>217\u2013220\u00b0C<\/td><td>\u0110\u1ed9 b\u1ec1n t\u1ed1t, gi\u00e1 c\u1ea3 h\u1ee3p l\u00fd<\/td><td>SMT t\u1ed5ng qu\u00e1t, h\u00e0n n\u00f3ng ch\u1ea3y<\/td><\/tr><tr><td>SAC387 (Sn95,5Ag3,8Cu0,7)<\/td><td>217\u2013219\u00b0C<\/td><td>T\u1ef7 l\u1ec7 \u0111i ti\u1ec3u gi\u1ea3m \u1edf c\u00e1c \u0111\u01a1n v\u1ecb h\u00e0nh ch\u00ednh c\u1ea5p huy\u1ec7n (LGA), chi ph\u00ed t\u0103ng cao<\/td><td>M\u00f4-\u0111un ngu\u1ed3n cho \u00f4 t\u00f4<\/td><\/tr><tr><td>SnCu0,7Ni<\/td><td>227\u2013230\u00b0C<\/td><td>Kh\u00f4ng ch\u1ee9a b\u1ea1c, chi ph\u00ed th\u1ea5p, th\u00edch h\u1ee3p cho h\u00e0n s\u00f3ng<\/td><td>L\u1ed7 xuy\u00ean, thi\u1ebft b\u1ecb ti\u00eau d\u00f9ng<\/td><\/tr><tr><td>SnBi\u2085\u2088 (Thi\u1ebfc-Bismut)<\/td><td>\u0110i\u1ec3m eutectic 138\u00b0C<\/td><td>Quy tr\u00ecnh nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, gi\u00fap tr\u00e1nh g\u00e2y \u1ee9ng su\u1ea5t nhi\u1ec7t cho c\u00e1c linh ki\u1ec7n nh\u1ea1y c\u1ea3m<\/td><td>M\u1ea1ch in d\u1ebbo, h\u00e0n t\u1eebng b\u01b0\u1edbc<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>SnBi \u0111ang thu h\u00fat s\u1ef1 quan t\u00e2m trong c\u00e1c c\u1ee5m linh ki\u1ec7n nh\u1ea1y c\u1ea3m v\u1edbi nhi\u1ec7t \u0111\u1ed9, nh\u01b0ng v\u1eadt li\u1ec7u n\u00e0y ph\u1ea3i \u0111\u01b0\u1ee3c t\u00e1ch bi\u1ec7t kh\u1ecfi c\u00e1c b\u1ed9 ph\u1eadn b\u1ecb nhi\u1ec5m ch\u00ec \u0111\u1ec3 tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng chuy\u1ec3n pha eutectic nguy hi\u1ec3m \u1edf 96\u00b0C.<\/p>\n\n\n\n<p>Lu\u00f4n ch\u1ecdn h\u1ee3p kim ph\u00f9 h\u1ee3p v\u1edbi quy tr\u00ecnh h\u00e0n c\u1ee7a b\u1ea1n. \u0110\u1ed1i v\u1edbi ph\u01b0\u01a1ng ph\u00e1p h\u00e0n t\u00e1i ch\u1ea3y, h\u1ee3p kim SAC305 k\u1ebft h\u1ee3p v\u1edbi b\u1ed9t lo\u1ea1i 4 (20\u201338 \u00b5m) cho k\u1ebft qu\u1ea3 in t\u1ed1t ngay c\u1ea3 v\u1edbi kho\u1ea3ng c\u00e1ch ch\u00e2n h\u00e0n 0,4 mm. \u0110\u1ed1i v\u1edbi ph\u01b0\u01a1ng ph\u00e1p h\u00e0n s\u00f3ng, h\u1ee3p kim SnCu0.7Ni mang l\u1ea1i hi\u1ec7u qu\u1ea3 t\u1ed1t <a href=\"https:\/\/flj-pcb.com\/vi\/about\/\" data-type=\"link\" data-id=\"https:\/\/flj-pcb.com\/about\/\">l\u1ed7 xuy\u00ean<\/a> \u0111\u1ed9 l\u1ea5p \u0111\u1ea7y cao h\u01a1n v\u00e0 chi ph\u00ed nguy\u00ean li\u1ec7u th\u1ea5p h\u01a1n \u2014 th\u01b0\u1eddng r\u1ebb h\u01a1n 15\u201320% so v\u1edbi SAC305.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c ph\u01b0\u01a1ng \u00e1n ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t cho b\u1ea3ng m\u1ea1ch in kh\u00f4ng ch\u00ec<\/h2>\n\n\n\n<p>L\u1edbp m\u1ea1 HASL kh\u00f4ng ch\u1ee9a ch\u00ec c\u00f3 chi ph\u00ed h\u1ee3p l\u00fd nh\u01b0ng kh\u00f4ng ph\u1ea3i l\u00e0 l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho m\u1ecdi thi\u1ebft k\u1ebf. C\u00e1c lo\u1ea1i l\u1edbp m\u1ea1 sau \u0111\u00e2y tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n RoHS v\u00e0 \u0111\u01b0\u1ee3c cung c\u1ea5p r\u1ed9ng r\u00e3i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>ENIG (M\u1ea1 niken kh\u00f4ng \u0111i\u1ec7n v\u00e0 m\u1ea1 v\u00e0ng nh\u00fang):<\/strong>\u00a0Ni 3\u20136 \u00b5m, Au 0,05\u20130,12 \u00b5m. \u0110\u1ed9 ph\u1eb3ng tuy\u1ec7t v\u1eddi (\u0111\u1ed9 l\u1ec7ch &lt;1,5 \u00b5m), l\u00fd t\u01b0\u1edfng cho c\u00e1c BGA c\u00f3 kho\u1ea3ng c\u00e1ch ch\u00e2n nh\u1ecf v\u00e0 b\u1ea3ng m\u1ea1ch t\u1ea7n s\u1ed1 cao. Th\u1eddi h\u1ea1n s\u1eed d\u1ee5ng 12 th\u00e1ng. Chi ph\u00ed: cao h\u01a1n HASL $0,50\u20131,50 m\u1ed7i dm\u00b2. C\u1ea7n l\u01b0u \u00fd hi\u1ec7n t\u01b0\u1ee3ng \u201c\u0111\u1ec7m \u0111en\u201d n\u1ebfu l\u1edbp niken thi\u1ebfu ph\u1ed1t pho. Quy tr\u00ecnh ENIG c\u1ee7a ch\u00fang t\u00f4i duy tr\u00ec h\u00e0m l\u01b0\u1ee3ng ph\u1ed1t pho \u1edf m\u1ee9c 7\u20139 wt% \u0111\u1ec3 tr\u00e1nh r\u1ee7i ro n\u00e0y.<\/li>\n\n\n\n<li><strong>Th\u00f9ng thi\u1ebfc ng\u00e2m:<\/strong>\u00a0L\u1edbp m\u1ea1 thi\u1ebfc ph\u1eb3ng, nguy\u00ean ch\u1ea5t, d\u00e0y 0,8\u20131,2 \u00b5m. Ph\u00f9 h\u1ee3p cho ph\u01b0\u01a1ng ph\u00e1p l\u1eafp gh\u00e9p \u00e9p v\u00e0 \u1ee9ng d\u1ee5ng t\u1ea7n s\u1ed1 cao (kh\u00f4ng b\u1ecb m\u1ea5t niken). Th\u1eddi h\u1ea1n s\u1eed d\u1ee5ng 6 th\u00e1ng; d\u1ec5 b\u1ecb h\u00ecnh th\u00e0nh s\u1ee3i thi\u1ebfc. Ch\u00fang t\u00f4i gi\u1ea3m thi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng h\u00ecnh th\u00e0nh s\u1ee3i thi\u1ebfc b\u1eb1ng c\u00e1ch \u1ee7 nhi\u1ec7t sau x\u1eed l\u00fd (150\u00b0C trong 1 gi\u1edd) v\u00e0 khuy\u1ebfn ngh\u1ecb ph\u1ee7 l\u1edbp b\u1ea3o v\u1ec7 trong m\u00f4i tr\u01b0\u1eddng c\u00f3 \u0111\u1ed9 \u1ea9m cao.<\/li>\n\n\n\n<li><strong>B\u1ea1c ng\u00e2m:<\/strong>\u00a0\u0110\u1ed9 d\u00e0y 0,2\u20130,5 \u00b5m. M\u1ea5t t\u00edn hi\u1ec7u th\u1ea5p nh\u1ea5t \u0111\u1ed1i v\u1edbi c\u00e1c b\u1ea3ng m\u1ea1ch RF t\u1ea7n s\u1ed1 tr\u00ean 5 GHz. Th\u1eddi h\u1ea1n s\u1eed d\u1ee5ng 6\u201312 th\u00e1ng n\u1ebfu \u0111\u01b0\u1ee3c b\u1ea3o qu\u1ea3n trong bao b\u00ec kh\u00f4ng ch\u1ee9a l\u01b0u hu\u1ef3nh. Kh\u00f4ng khuy\u1ebfn ngh\u1ecb s\u1eed d\u1ee5ng cho c\u00e1c h\u1ec7 th\u1ed1ng ti\u1ebfp x\u00fac v\u1edbi kh\u00ed \u0103n m\u00f2n n\u1ebfu kh\u00f4ng c\u00f3 l\u1edbp ph\u1ee7.<\/li>\n\n\n\n<li><strong>OSP (Ch\u1ea5t b\u1ea3o qu\u1ea3n kh\u1ea3 n\u0103ng h\u00e0n h\u1eefu c\u01a1):<\/strong>\u00a0L\u1edbp ph\u1ee7 m\u1ecfng nh\u1ea5t, kh\u00f4ng ch\u1ee9a kim lo\u1ea1i. Chi ph\u00ed th\u1ea5p, th\u00edch h\u1ee3p cho h\u00e0n kh\u00f4ng ch\u00ec. Ch\u1ec9 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c trong 2\u20133 chu k\u1ef3 nung l\u1ea1i; th\u1eddi h\u1ea1n s\u1eed d\u1ee5ng 6\u201312 th\u00e1ng khi b\u1ea3o qu\u1ea3n trong t\u00fai k\u00edn. Kh\u00f4ng s\u1eed d\u1ee5ng OSP tr\u00ean c\u00e1c \u0111\u1ea7u n\u1ed1i c\u1ea1nh ho\u1eb7c \u0111i\u1ec3m ki\u1ec3m tra c\u1ea7n ki\u1ec3m tra nhi\u1ec1u l\u1ea7n.<\/li>\n<\/ul>\n\n\n\n<p>K\u1ebft qu\u1ea3 ho\u00e0n thi\u1ec7n t\u1ed1t nh\u1ea5t ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 d\u1ed1c, t\u1ea7n s\u1ed1 v\u00e0 m\u00f4i tr\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ea3ng m\u1ea1ch. H\u00e3y tham kh\u1ea3o b\u1ea3ng tr\u00ean \u0111\u1ec3 b\u1eaft \u0111\u1ea7u, nh\u01b0ng lu\u00f4n th\u1ef1c hi\u1ec7n ki\u1ec3m tra kh\u1ea3 n\u0103ng h\u00e0n theo ti\u00eau chu\u1ea9n IPC-J-STD-003 tr\u01b0\u1edbc khi \u0111\u01b0a v\u00e0o s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">H\u01b0\u1edbng d\u1eabn DFM cho vi\u1ec7c l\u1eafp r\u00e1p b\u1ea3ng m\u1ea1ch in kh\u00f4ng ch\u00ec<\/h2>\n\n\n\n<p>Vi\u1ec7c chuy\u1ec3n sang h\u00e0n kh\u00f4ng ch\u00ec s\u1ebd thay \u0111\u1ed5i c\u00e1ch b\u1ea1n thi\u1ebft k\u1ebf b\u1ea3ng m\u1ea1ch in (PCB). D\u01b0\u1edbi \u0111\u00e2y l\u00e0 n\u0103m nguy\u00ean t\u1eafc m\u00e0 ch\u00fang t\u00f4i \u0111\u00e3 ki\u1ec3m ch\u1ee9ng qua h\u00e0ng ngh\u00ecn d\u1ef1 \u00e1n \u2014 ch\u00fang gi\u00fap gi\u1ea3m tr\u1ef1c ti\u1ebfp s\u1ed1 l\u1ea7n s\u1eeda ch\u1eefa l\u1ea1i v\u00e0 c\u00e1c s\u1ef1 c\u1ed1 trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Gi\u1ea3m gi\u00e1 mi\u1ebfng l\u00f3t v\u00e0 kh\u1ea9u trang:<\/strong>\u00a0D\u00e0nh cho s\u1ea3n ph\u1ea9m kh\u00f4ng ch\u1ee9a ch\u00ec <a href=\"https:\/\/flj-pcb.com\/vi\/pcb-manufacturer\/hasl-pcb\/\" data-type=\"page\" data-id=\"2392\">HASL<\/a>, h\u00e3y \u0111\u1ea3m b\u1ea3o kho\u1ea3ng tr\u1ed1ng t\u1ed1i thi\u1ec3u 50 \u00b5m c\u1ee7a l\u1edbp ph\u1ee7 h\u00e0n xung quanh c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac. \u0110i\u1ec1u n\u00e0y gi\u00fap ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng ng\u1eafn m\u1ea1ch do b\u1ec1 m\u1eb7t HASL h\u01a1i kh\u00f4ng b\u1eb1ng ph\u1eb3ng. \u0110\u1ed1i v\u1edbi <a href=\"https:\/\/flj-pcb.com\/vi\/pcb-manufacturer\/enig-pcb\/\" data-type=\"page\" data-id=\"2398\">ENIG<\/a> \u0110\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i QFN c\u00f3 kho\u1ea3ng c\u00e1ch ch\u00e2n nh\u1ecf, \u0111\u1ed9 d\u00e0y l\u1edbp ph\u1ee7 75 \u00b5m s\u1ebd an to\u00e0n h\u01a1n.<\/li>\n\n\n\n<li><strong>Gi\u1ea3i ph\u00e1p t\u1ea3n nhi\u1ec7t tr\u00ean c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac l\u1ed7 xuy\u00ean:<\/strong>\u00a0Trong qu\u00e1 tr\u00ecnh h\u00e0n s\u00f3ng b\u1eb1ng h\u1ee3p kim kh\u00f4ng ch\u00ec, c\u00e1c l\u1edbp \u0111\u1ed3ng \u0111\u1eb7c s\u1ebd h\u00fat nhi\u1ec7t ra kh\u1ecfi b\u1ec3 h\u00e0n v\u00e0 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng l\u1ea5p \u0111\u1ea7y l\u1ed7 kh\u00f4ng \u0111\u1ee7. Lu\u00f4n th\u00eam c\u00e1c thanh d\u1eabn nhi\u1ec7t (m\u1eabu 4 thanh, chi\u1ec1u r\u1ed9ng thanh 0,3 mm) \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t h\u00e0n tr\u00e0n l\u00ean \u0111\u1ebfn \u0111\u1ec9nh.<\/li>\n\n\n\n<li><strong>Y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi v\u00f2ng \u0111\u1ec7m:<\/strong>\u00a0N\u00ean s\u1eed d\u1ee5ng v\u00f2ng \u0111\u1ec7m c\u00f3 \u0111\u01b0\u1eddng k\u00ednh t\u1ed1i thi\u1ec3u 250 \u00b5m tr\u00ean c\u00e1c l\u1ed7 xuy\u00ean m\u1ea1. S\u1ef1 ch\u00eanh l\u1ec7ch h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t (CTE) l\u1edbn h\u01a1n so v\u1edbi h\u1ee3p kim SAC s\u1ebd g\u00e2y ra \u00e1p l\u1ef1c l\u1edbn h\u01a1n l\u00ean th\u00e2n \u1ed1ng \u0111\u1ed3ng trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m nhi\u1ec7t, v\u00e0 c\u00e1c v\u00f2ng \u0111\u1ec7m c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n d\u1ec5 b\u1ecb n\u1ee9t \u1edf c\u00e1c g\u00f3c. Ch\u1ec9 ri\u00eang quy t\u1eafc n\u00e0y \u0111\u00e3 gi\u00fap ng\u0103n ng\u1eeba 70% c\u00e1c tr\u01b0\u1eddng h\u1ee3p n\u1ee9t th\u00e2n \u1ed1ng m\u00e0 ch\u00fang ta th\u01b0\u1eddng th\u1ea5y trong ph\u00e2n t\u00edch h\u01b0 h\u1ecfng.<\/li>\n\n\n\n<li><strong>V\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t linh ki\u1ec7n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e2n b\u1eb1ng nhi\u1ec7t:<\/strong>\u00a0Kh\u00f4ng n\u00ean \u0111\u1eb7t c\u00e1c linh ki\u1ec7n th\u1ee5 \u0111\u1ed9ng k\u00edch th\u01b0\u1edbc nh\u1ecf 0201 ho\u1eb7c 0402 ngay ph\u00eda sau m\u1ed9t BGA l\u1edbn theo h\u01b0\u1edbng h\u00e0n l\u1ea1i. BGA ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t b\u1ed9 t\u1ea3n nhi\u1ec7t v\u00e0 c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng gia nhi\u1ec7t kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u, d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng \u201ctombstoning\u201d. H\u00e3y gi\u1eef c\u00e1c linh ki\u1ec7n nh\u1ecf n\u00e0y c\u00e1ch m\u00e9p b\u1ea3ng m\u1ea1ch v\u00e0 c\u00e1c m\u00e9p t\u00e1ch r\u1eddi \u00edt nh\u1ea5t 2 mm.<\/li>\n\n\n\n<li><strong>Y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi Via-in-Pad:<\/strong>\u00a0M\u1ecdi l\u1ed7 via \u0111\u01b0\u1ee3c \u0111\u1eb7t b\u00ean trong pad SMT ph\u1ea3i \u0111\u01b0\u1ee3c l\u1ea5p \u0111\u1ea7y b\u1eb1ng epoxy kh\u00f4ng d\u1eabn \u0111i\u1ec7n v\u00e0 ph\u1ee7 m\u1ed9t l\u1edbp m\u1ea1 \u0111\u1ed3ng. N\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ecbt k\u00edn, b\u1ed9t h\u00e0n s\u1ebd th\u1ea5m v\u00e0o l\u1ed7 via trong qu\u00e1 tr\u00ecnh h\u00e0n l\u1ea1i kh\u00f4ng ch\u00ec, khi\u1ebfn pad b\u1ecb thi\u1ebfu h\u00e0n v\u00e0 d\u1eabn \u0111\u1ebfn c\u00e1c m\u1ed1i h\u00e0n b\u1ecb h\u1edf. H\u1ec7 th\u1ed1ng ki\u1ec3m tra DFM c\u1ee7a ch\u00fang t\u00f4i s\u1ebd t\u1ef1 \u0111\u1ed9ng ph\u00e1t hi\u1ec7n v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c ph\u01b0\u01a1ng ph\u00e1p hay nh\u1ea5t trong ki\u1ec3m so\u00e1t quy tr\u00ecnh l\u1eafp r\u00e1p kh\u00f4ng ch\u00ec<\/h2>\n\n\n\n<p>Vi\u1ec7c l\u1eafp r\u00e1p kh\u00f4ng ch\u00ec \u0111\u00f2i h\u1ecfi s\u1ef1 ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd h\u01a1n so v\u1edbi SnPb. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c th\u00f4ng s\u1ed1 quan tr\u1ecdng m\u00e0 ch\u00fang t\u00f4i theo d\u00f5i trong m\u1ed7i l\u1ea7n s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>In m\u1ef1c h\u00e0n:<\/strong>\u00a0S\u1eed d\u1ee5ng khu\u00f4n in b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 c\u00e1c l\u1ed7 c\u1eaft b\u1eb1ng laser v\u00e0 l\u1edbp ph\u1ee7 nano \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ed9t h\u00e0n \u0111\u01b0\u1ee3c ph\u00e2n ph\u1ed1i \u0111\u1ec1u. \u0110\u1ed1i v\u1edbi b\u1ed9t h\u00e0n SAC305 (Lo\u1ea1i 4), ch\u00fang t\u00f4i thi\u1ebft l\u1eadp chi\u1ec1u r\u1ed9ng l\u1ed7 b\u1eb1ng chi\u1ec1u r\u1ed9ng \u0111i\u1ec3m ti\u1ebfp x\u00fac tr\u1eeb \u0111i 10 \u00b5m, v\u00e0 t\u1ef7 l\u1ec7 di\u1ec7n t\u00edch \u22650,66. T\u1ed1c \u0111\u1ed9 in 25\u201350 mm\/s, \u00e1p l\u1ef1c g\u1ea1t 100\u2013150 N, v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng \u1edf 22\u00b12\u00b0C v\u00e0 40\u201360% RH. Ch\u00fang t\u00f4i ki\u1ec3m tra th\u1ec3 t\u00edch ch\u1ea5t h\u00e0n b\u1eb1ng m\u00e1y SPI (ki\u1ec3m tra ch\u1ea5t h\u00e0n) \u0111\u1ec3 duy tr\u00ec CpK \u22651,33.<\/li>\n\n\n\n<li><strong>N\u1eafm v\u1eefng h\u1ed3 s\u01a1 h\u00e0n l\u1ea1i:<\/strong>\u00a0\u0110\u01b0\u1eddng cong nhi\u1ec7t \u0111\u1ed9 l\u00fd t\u01b0\u1edfng cho SAC305: t\u0103ng d\u1ea7n l\u00ean 150\u2013180\u00b0C v\u1edbi t\u1ed1c \u0111\u1ed9 1,5\u20132,5\u00b0C\/s, duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 trong 60\u2013120 gi\u00e2y, sau \u0111\u00f3 t\u0103ng l\u00ean nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec9nh 235\u2013245\u00b0C v\u1edbi th\u1eddi gian duy tr\u00ec tr\u00ean nhi\u1ec7t \u0111\u1ed9 l\u1ecfng (TAL) l\u00e0 60\u201390 gi\u00e2y. Nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec9nh kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 245\u00b0C \u0111\u1ed1i v\u1edbi FR\u20114 ti\u00eau chu\u1ea9n; ch\u1ec9 c\u00e1c b\u1ea3ng m\u1ea1ch \u0111\u1ed3ng d\u00e0y ho\u1eb7c g\u1ed1m m\u1edbi c\u1ea7n 260\u00b0C. Ch\u00fang t\u00f4i ghi l\u1ea1i h\u1ed3 s\u01a1 nhi\u1ec7t \u0111\u1ed9 c\u1ee7a t\u1eebng b\u1ea3ng m\u1ea1ch \u0111\u00e3 l\u1eafp r\u00e1p v\u00e0 ki\u1ec3m tra xem ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 (delta\u2011T) tr\u00ean to\u00e0n b\u1ed9 PCB c\u00f3 n\u1eb1m trong kho\u1ea3ng \u00b13\u00b0C hay kh\u00f4ng.<\/li>\n\n\n\n<li><strong>Ki\u1ec3m tra v\u00e0 th\u1eed nghi\u1ec7m:<\/strong>\u00a0Ngay sau khi ho\u00e0n t\u1ea5t qu\u00e1 tr\u00ecnh h\u00e0n l\u1ea1i, c\u00e1c b\u1ea3ng m\u1ea1ch s\u1ebd \u0111\u01b0\u1ee3c \u0111\u01b0a qua h\u1ec7 th\u1ed1ng ki\u1ec3m tra h\u00ecnh \u1ea3nh t\u1ef1 \u0111\u1ed9ng (AOI) \u0111\u1ec3 ph\u00e1t hi\u1ec7n hi\u1ec7n t\u01b0\u1ee3ng c\u1ea7u ch\u00ec, linh ki\u1ec7n thi\u1ebfu s\u00f3t v\u00e0 c\u1ef1c t\u00ednh v\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i 15 \u00b5m. \u0110\u1ed1i v\u1edbi c\u00e1c linh ki\u1ec7n BGA, QFN v\u00e0 b\u1ea5t k\u1ef3 m\u1ed1i h\u00e0n \u1ea9n n\u00e0o, ch\u00fang t\u00f4i s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 ch\u1ee5p X-quang 2D v\u1edbi ti\u00eau chu\u1ea9n l\u1ed7 r\u1ed7ng IPC-7095 Lo\u1ea1i A (k\u00edch th\u01b0\u1edbc l\u1ed7 r\u1ed7ng &lt;25% so v\u1edbi \u0111\u01b0\u1eddng k\u00ednh b\u00f3ng h\u00e0n \u0111\u1ed1i v\u1edbi Lo\u1ea1i 2). C\u00e1c th\u1eed nghi\u1ec7m \u0111\u1ed9 tin c\u1eady ti\u1ebfp theo c\u00f3 th\u1ec3 bao g\u1ed3m chu k\u1ef3 nhi\u1ec7t IPC-9701 (\u221240 \u0111\u1ebfn +125\u00b0C, 1000 chu k\u1ef3) v\u00e0 x\u00e1c minh kh\u1ea3 n\u0103ng h\u00e0n theo ti\u00eau chu\u1ea9n IPC-J-STD-003.<\/li>\n<\/ul>\n\n\n\n<p>M\u1ed9t quy tr\u00ecnh \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd mang l\u1ea1i hi\u1ec7u su\u1ea5t s\u1ea3n xu\u1ea5t ngay t\u1eeb l\u1ea7n \u0111\u1ea7u ti\u00ean v\u01b0\u1ee3t qu\u00e1 98% cho c\u00e1c l\u00f4 s\u1ea3n xu\u1ea5t \u0111a d\u1ea1ng m\u1eabu m\u00e3, kh\u1ed1i l\u01b0\u1ee3ng trung b\u00ecnh \u2014 v\u00e0 \u0111\u00f3 ch\u00ednh l\u00e0 k\u1ebft qu\u1ea3 m\u00e0 ch\u00fang t\u00f4i lu\u00f4n \u0111\u1ea1t \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Nh\u1eefng th\u00e1ch th\u1ee9c th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch gi\u1ea3i quy\u1ebft<\/h2>\n\n\n\n<p><strong>Nhi\u1ec7t \u0111\u1ed9 h\u00e0n cao h\u01a1n<\/strong>&nbsp;l\u00e0 nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 c\u1ee7a nhi\u1ec1u v\u1ea5n \u0111\u1ec1. Vi\u1ec7c s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u FR-4 ti\u00eau chu\u1ea9n c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha (Tg) t\u1eeb 130\u2013140\u00b0C c\u00f3 nguy c\u01a1 g\u00e2y cong v\u00eanh v\u00e0 bong tr\u00f3c l\u1edbp. Lu\u00f4n y\u00eau c\u1ea7u s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u FR-4 c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (Tg 170\u2013180\u00b0C) cho c\u00e1c b\u1ea3ng m\u1ea1ch kh\u00f4ng ch\u00ec. Nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n c\u0169ng l\u00e0m \u0111\u1ed3ng b\u1ecb oxy h\u00f3a nhanh h\u01a1n; vi\u1ec7c k\u00edch ho\u1ea1t ch\u1ea5t tr\u1ee3 h\u00e0n hi\u1ec7u qu\u1ea3 v\u00e0 ki\u1ec3m so\u00e1t t\u1ed1c \u0111\u1ed9 t\u0103ng nhi\u1ec7t gi\u00fap ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng kh\u00f4ng b\u00e1m h\u00e0n. L\u00f2 nung c\u1ee7a ch\u00fang t\u00f4i duy tr\u00ec m\u1ee9c oxy d\u01b0\u1edbi 1000 ppm, v\u00e0 \u0111\u1ed1i v\u1edbi c\u00e1c b\u1ea3ng m\u1ea1ch RF quan tr\u1ecdng, ch\u00fang t\u00f4i s\u1eed d\u1ee5ng qu\u00e1 tr\u00ecnh nung l\u1ea1i b\u1eb1ng nit\u01a1 (&lt;100 ppm O\u2082) \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng h\u00e0n ho\u00e0n h\u1ea3o.<\/p>\n\n\n\n<p><strong>\u0110\u1ed9 tin c\u1eady c\u1ee7a m\u1ed1i h\u00e0n<\/strong>&nbsp;l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 lu\u00f4n \u0111\u01b0\u1ee3c quan t\u00e2m v\u00ec c\u00e1c h\u1ee3p kim SAC t\u1ea1o th\u00e0nh c\u00e1c h\u1ee3p ch\u1ea5t kim lo\u1ea1i c\u00f3 th\u1ec3 tr\u1edf n\u00ean gi\u00f2n. L\u1edbp IMC (Cu\u2086Sn\u2085) ph\u1ea3i c\u00f3 \u0111\u1ed9 d\u00e0y d\u01b0\u1edbi 2 \u00b5m. \u0110i\u1ec1u n\u00e0y \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch gi\u1edbi h\u1ea1n th\u1eddi gian TAL trong kho\u1ea3ng 60\u201390 gi\u00e2y v\u00e0 l\u00e0m ngu\u1ed9i v\u1edbi t\u1ed1c \u0111\u1ed9 \u22122 \u0111\u1ebfn \u22124\u00b0C\/s. \u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m ph\u1ea3i ch\u1ecbu rung \u0111\u1ed9ng ho\u1eb7c chu k\u1ef3 nhi\u1ec7t, ch\u00fang t\u00f4i th\u01b0\u1eddng th\u00eam qu\u00e1 tr\u00ecnh \u1ee7 sau khi nung ch\u1ea3y: 100\u00b0C trong 1 gi\u1edd \u0111\u1ec3 \u1ed5n \u0111\u1ecbnh c\u1ea5u tr\u00fac h\u1ea1t.<\/p>\n\n\n\n<p><strong>S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c s\u1ee3i kim lo\u1ea1i<\/strong>&nbsp;tr\u00ean b\u1ec1 m\u1eb7t m\u1ea1 thi\u1ebfc nguy\u00ean ch\u1ea5t c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng ch\u1eadp \u0111i\u1ec7n. Ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 thi\u1ebfc ng\u00e2m l\u00e0 nguy\u00ean nh\u00e2n ch\u00ednh, nh\u01b0ng r\u1ee7i ro n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t b\u1eb1ng c\u00e1ch nung \u1edf nhi\u1ec7t \u0111\u1ed9 150\u00b0C ho\u1eb7c s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c m\u1ea1 thi\u1ebfc m\u1edd. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 an to\u00e0n cao, l\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7 s\u1ebd ng\u0103n ch\u1eb7n s\u1ef1 lan r\u1ed9ng c\u1ee7a c\u00e1c s\u1ee3i thi\u1ebfc.<\/p>\n\n\n\n<p><strong>S\u1eeda ch\u1eefa kh\u00f4ng ch\u1ee9a ch\u00ec<\/strong>&nbsp;khi\u1ebfn nhi\u1ec1u k\u1ef9 s\u01b0 e ng\u1ea1i, nh\u01b0ng n\u1ebfu \u00e1p d\u1ee5ng \u0111\u00fang k\u1ef9 thu\u1eadt th\u00ec qu\u00e1 tr\u00ecnh n\u00e0y s\u1ebd an to\u00e0n. S\u1eed d\u1ee5ng b\u1ed9 gia nhi\u1ec7t \u0111\u00e1y \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t \u1edf 150\u00b0C \u0111\u1ec3 gi\u1ea3m \u0111\u1ed9 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9. V\u00f2i phun kh\u00ed n\u00f3ng n\u00ean \u0111\u1ea1t 245\u00b0C, kh\u00f4ng bao gi\u1edd duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 tr\u00ean 260\u00b0C qu\u00e1 10 gi\u00e2y tr\u00ean m\u1ed9t linh ki\u1ec7n duy nh\u1ea5t. \u0110\u1ed1i v\u1edbi vi\u1ec7c th\u00e1o g\u1ee1 QFN, ch\u1ea5t h\u00e0n c\u00f3 h\u00e0m l\u01b0\u1ee3ng nh\u1ef1a th\u00f4ng ~15% gi\u00fap c\u1ea3i thi\u1ec7n truy\u1ec1n nhi\u1ec7t v\u00e0 gi\u1ea3m hi\u1ec7n t\u01b0\u1ee3ng bong pad. Tr\u1ea1m s\u1eeda ch\u1eefa c\u1ee7a ch\u00fang t\u00f4i ghi l\u1ea1i h\u1ed3 s\u01a1 nhi\u1ec7t \u0111\u1ec3 ch\u1ee9ng minh kh\u00f4ng c\u00f3 h\u01b0 h\u1ecfng n\u00e0o x\u1ea3y ra.<\/p>\n\n\n\n<p><strong>Qu\u00e1 tr\u00ecnh oxy h\u00f3a sau khi l\u1eafp r\u00e1p<\/strong>&nbsp;c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng h\u00e0n trong qu\u00e1 tr\u00ecnh b\u1ea3o qu\u1ea3n. Ch\u00fang t\u00f4i \u0111\u00f3ng g\u00f3i ch\u00e2n kh\u00f4ng c\u00e1c b\u1ea3ng m\u1ea1ch tr\u1ea7n c\u00f9ng v\u1edbi ch\u1ea5t h\u00fat \u1ea9m v\u00e0 th\u1ebb ch\u1ec9 th\u1ecb \u0111\u1ed9 \u1ea9m (&lt;51% RH). C\u00e1c b\u1ea3ng m\u1ea1ch \u0111\u00e3 l\u1eafp r\u00e1p \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i trong t\u00fai ch\u1ed1ng \u1ea9m v\u1edbi quy tr\u00ecnh t\u01b0\u01a1ng t\u1ef1. Th\u1eddi h\u1ea1n s\u1eed d\u1ee5ng c\u1ee7a b\u1ea3ng m\u1ea1ch HASL l\u00e0 12 th\u00e1ng; b\u1ea3ng m\u1ea1ch ENIG c\u0169ng l\u00e0 12 th\u00e1ng, nh\u01b0ng lu\u00f4n ki\u1ec3m tra th\u1ebb ch\u1ec9 th\u1ecb \u0111\u1ed9 \u1ea9m tr\u01b0\u1edbc khi m\u1edf bao b\u00ec.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"446\" height=\"334\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/05\/Lead\u2011Free-PCB.webp\" alt=\"Lead\u2011Free PCB\" class=\"wp-image-4955\" srcset=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/05\/Lead\u2011Free-PCB.webp 446w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/05\/Lead\u2011Free-PCB-300x225.webp 300w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/05\/Lead\u2011Free-PCB-16x12.webp 16w\" sizes=\"(max-width: 446px) 100vw, 446px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Ph\u00e2n t\u00edch chi ph\u00ed: L\u1eafp r\u00e1p kh\u00f4ng ch\u00ec m\u00e0 kh\u00f4ng g\u1eb7p ph\u1ea3i nh\u1eefng chi ph\u00ed ph\u00e1t sinh ngo\u00e0i d\u1ef1 ki\u1ebfn<\/h2>\n\n\n\n<p>M\u1ed1i lo ng\u1ea1i v\u1ec1 chi ph\u00ed th\u01b0\u1eddng l\u00e0 nguy\u00ean nh\u00e2n d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u1ea3n \u0111\u1ed1i \u0111\u1ed1i v\u1edbi v\u1eadt li\u1ec7u kh\u00f4ng ch\u00ec, nh\u01b0ng c\u00e1c con s\u1ed1 l\u1ea1i cho th\u1ea5y m\u1ed9t b\u1ee9c tranh r\u00f5 r\u00e0ng h\u01a1n. Gi\u00e1 b\u1ed9t h\u00e0n SAC305 hi\u1ec7n nay g\u1ea7n nh\u01b0 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi b\u1ed9t h\u00e0n SnPb \u2014 ch\u00eanh l\u1ec7ch ch\u1ec9 d\u01b0\u1edbi 5% \u1edf m\u1ee9c s\u1ea3n l\u01b0\u1ee3ng ti\u00eau chu\u1ea9n. C\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn chi ph\u00ed bao g\u1ed3m v\u1eadt li\u1ec7u n\u1ec1n (v\u1eadt li\u1ec7u FR-4 c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao l\u00e0m t\u0103ng gi\u00e1 b\u1ea3n m\u1ea1ch tr\u1ea7n th\u00eam 10\u201315%), l\u1ef1a ch\u1ecdn l\u1edbp ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t v\u00e0 c\u00e1c y\u00eau c\u1ea7u ki\u1ec3m so\u00e1t quy tr\u00ecnh b\u1ed5 sung.<\/p>\n\n\n\n<p>B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y tr\u00ecnh b\u00e0y m\u1ee9c ch\u00eanh l\u1ec7ch chi ph\u00ed \u0111i\u1ec3n h\u00ecnh tr\u00ean m\u1ed7i dm\u00b2 \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i l\u1edbp ho\u00e0n thi\u1ec7n ph\u1ed5 bi\u1ebfn (chi ph\u00ed ho\u00e0n thi\u1ec7n t\u1ea5m tr\u1ea7n, so v\u1edbi HASL):<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>HASL kh\u00f4ng ch\u00ec: m\u1ee9c c\u01a1 b\u1ea3n<\/li>\n\n\n\n<li>ENIG: t\u1eeb +$0,50 \u0111\u1ebfn $1,00<\/li>\n\n\n\n<li>B\u1ea1c ng\u00e2m: +$0,20 \u0111\u1ebfn $0,40<\/li>\n\n\n\n<li>OSP: -$0.10 \u0111\u1ebfn $0.10 (t\u1ed1i thi\u1ec3u)<\/li>\n<\/ul>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi m\u1ed9t b\u1ea3ng m\u1ea1ch c\u00f3 k\u00edch th\u01b0\u1edbc 100 mm \u00d7 150 mm (1,5 dm\u00b2), vi\u1ec7c chuy\u1ec3n t\u1eeb c\u00f4ng ngh\u1ec7 HASL sang ENIG s\u1ebd l\u00e0m t\u0103ng chi ph\u00ed b\u1ea3ng m\u1ea1ch tr\u1ea7n th\u00eam kho\u1ea3ng $0,75 \u0111\u1ebfn $1,50. Tuy nhi\u00ean, \u0111\u1ed9 ph\u1eb3ng ho\u00e0n h\u1ea3o c\u1ee7a ENIG gi\u00fap gi\u1ea3m thi\u1ec3u c\u00e1c l\u1ed7i l\u1eafp r\u00e1p tr\u00ean c\u00e1c BGA c\u00f3 kho\u1ea3ng c\u00e1ch ch\u00e2n nh\u1ecf, \u01b0\u1edbc t\u00ednh gi\u1ea3m 0,5\u20131,0% t\u1ed5n th\u1ea5t n\u0103ng su\u1ea5t, ti\u1ebft ki\u1ec7m chi ph\u00ed s\u1eeda ch\u1eefa \u0111\u00e1ng k\u1ec3 \u2014 \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi l\u00f4 s\u1ea3n xu\u1ea5t 1.000 \u0111\u01a1n v\u1ecb. T\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu th\u01b0\u1eddng nghi\u00eang v\u1ec1 ph\u00eda ENIG khi c\u00f3 s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a BGA.<\/p>\n\n\n\n<p>Chi ph\u00ed NRE cho c\u00e1c l\u00f4 s\u1ea3n ph\u1ea9m m\u1eabu (5\u201350 chi\u1ebfc) khi s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 kh\u00f4ng ch\u00ec th\u01b0\u1eddng th\u1ea5p h\u01a1n so v\u1edbi d\u1ef1 ki\u1ebfn: chi ph\u00ed khu\u00f4n in n\u1eb1m trong kho\u1ea3ng 1.400\u20131.500\u20132.000, chi ph\u00ed thi\u1ebft l\u1eadp kho\u1ea3ng 1.400\u20132.000\u20133.000, v\u00e0 chi ph\u00ed l\u1eadp tr\u00ecnh th\u01b0\u1eddng mi\u1ec5n ph\u00ed. Th\u1eddi gian l\u1eafp r\u00e1p nhanh kh\u00f4ng ch\u00ec l\u00e0 24\u201348 gi\u1edd \u0111\u1ed1i v\u1edbi c\u00e1c bo m\u1ea1ch \u0111\u01a1n gi\u1ea3n v\u00e0 5\u20137 ng\u00e0y \u0111\u1ed1i v\u1edbi c\u00e1c BGA ph\u1ee9c t\u1ea1p. Vui l\u00f2ng li\u00ean h\u1ec7 v\u1edbi \u0111\u1ed9i ng\u0169 c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ec3 nh\u1eadn b\u00e1o gi\u00e1 chi ti\u1ebft.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p<\/h2>\n\n\n\n<p>L\u1eafp r\u00e1p b\u1ea3ng m\u1ea1ch in kh\u00f4ng ch\u00ec (PCB) l\u00e0 ngu\u1ed3n \u0111\u1ed9ng l\u1ef1c cho c\u00e1c s\u1ea3n ph\u1ea9m trong m\u1ecdi l\u0129nh v\u1ef1c:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0110i\u1ec7n t\u1eed \u00f4 t\u00f4:<\/strong>\u00a0C\u00e1c m\u00f4-\u0111un d\u01b0\u1edbi n\u1eafp ca-p\u00f4 ph\u1ea3i ch\u1ecbu \u0111\u01b0\u1ee3c c\u00e1c chu k\u1ef3 nhi\u1ec7t t\u1eeb \u221240\u00b0C \u0111\u1ebfn +125\u00b0C v\u00e0 \u0111\u1ed9 rung cao. C\u00e1c m\u1ed1i h\u00e0n SAC305 ch\u1ec9 v\u01b0\u1ee3t qua \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m s\u1ed1c nhi\u1ec7t 1.000 chu k\u1ef3 khi s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u laminate c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-Tg) v\u00e0 t\u1ed1c \u0111\u1ed9 l\u00e0m m\u00e1t \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a. Ch\u00fang t\u00f4i \u0111\u00e3 cung c\u1ea5p h\u01a1n 500.000 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u00f4 t\u00f4 kh\u00f4ng ch\u1ee9a ch\u00ec, t\u1ea5t c\u1ea3 \u0111\u1ec1u \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 tin c\u1eady theo ti\u00eau chu\u1ea9n AEC-Q100.<\/li>\n\n\n\n<li><strong>Thi\u1ebft b\u1ecb y t\u1ebf:<\/strong>\u00a0Thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i v\u1edbi b\u1ec7nh nh\u00e2n \u0111\u00f2i h\u1ecfi kh\u00f4ng \u0111\u01b0\u1ee3c x\u1ea3y ra s\u1ef1 c\u1ed1 n\u00e0o trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng. L\u1edbp ph\u1ee7 Immersion Silver ho\u1eb7c ENIG \u0111\u1ea3m b\u1ea3o c\u00e1c m\u1ed1i h\u00e0n \u1ed5n \u0111\u1ecbnh sau nhi\u1ec1u chu k\u1ef3 ti\u1ec7t tr\u00f9ng, v\u00e0 vi\u1ec7c ghi ch\u00e9p quy tr\u00ecnh nghi\u00eam ng\u1eb7t h\u1ed7 tr\u1ee3 vi\u1ec7c theo d\u00f5i ki\u1ec3m to\u00e1n c\u1ee7a FDA.<\/li>\n\n\n\n<li><strong>H\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 &amp; Qu\u1ed1c ph\u00f2ng:<\/strong>\u00a0M\u1eb7c d\u00f9 c\u00f3 c\u00e1c tr\u01b0\u1eddng h\u1ee3p mi\u1ec5n tr\u1eeb, nhi\u1ec1u ch\u01b0\u01a1ng tr\u00ecnh hi\u1ec7n nay v\u1eabn y\u00eau c\u1ea7u s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u kh\u00f4ng ch\u1ee9a ch\u00ec cho c\u00e1c thi\u1ebft k\u1ebf m\u1edbi. D\u00e2y chuy\u1ec1n l\u1eafp r\u00e1p c\u1ee7a ch\u00fang t\u00f4i h\u1ed7 tr\u1ee3 quy tr\u00ecnh ki\u1ec3m tra Lo\u1ea1i 3 theo ti\u00eau chu\u1ea9n IPC-A-610, v\u1edbi gi\u1edbi h\u1ea1n l\u1ed7 r\u1ed7ng khi ki\u1ec3m tra tia X d\u01b0\u1edbi 10% \u0111\u1ed1i v\u1edbi c\u00e1c chip BGA d\u00f9ng trong ng\u00e0nh h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/li>\n\n\n\n<li><strong>Ti\u00eau d\u00f9ng &amp; C\u00f4ng nghi\u1ec7p:<\/strong>\u00a0C\u00e1c s\u1ea3n ph\u1ea9m s\u1ea3n xu\u1ea5t v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn r\u1ea5t ph\u00f9 h\u1ee3p v\u1edbi ph\u01b0\u01a1ng ph\u00e1p h\u00e0n s\u00f3ng kh\u00f4ng ch\u00ec s\u1eed d\u1ee5ng h\u1ee3p kim SnCu0.7Ni, gi\u00fap gi\u1ea3m chi ph\u00ed nguy\u00ean v\u1eadt li\u1ec7u m\u00e0 v\u1eabn \u0111\u1ea3m b\u1ea3o n\u0103ng su\u1ea5t.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa l\u1eafp r\u00e1p PCB kh\u00f4ng ch\u00ec v\u00e0 c\u00f3 ch\u00ec l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p>H\u1ee3p kim h\u00e0n v\u00e0 nhi\u1ec7t \u0111\u1ed9 qu\u00e1 tr\u00ecnh. C\u00e1c h\u1ee3p kim kh\u00f4ng ch\u00ec n\u00f3ng ch\u1ea3y \u1edf kho\u1ea3ng 217\u00b0C, trong khi h\u1ee3p kim SnPb truy\u1ec1n th\u1ed1ng n\u00f3ng ch\u1ea3y \u1edf 183\u00b0C. \u0110i\u1ec1u n\u00e0y \u0111\u1ea9y nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec9nh c\u1ee7a qu\u00e1 tr\u00ecnh h\u00e0n l\u1ea1i l\u00ean 235\u2013245\u00b0C v\u00e0 \u0111\u00f2i h\u1ecfi v\u1eadt li\u1ec7u PCB ph\u1ea3i c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha th\u1ee7y tinh cao h\u01a1n (Tg \u2265170\u00b0C) \u0111\u1ec3 tr\u00e1nh h\u01b0 h\u1ecfng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">L\u1edbp m\u1ea1 HASL kh\u00f4ng ch\u00ec c\u00f3 \u0111\u00e1ng tin c\u1eady nh\u01b0 l\u1edbp m\u1ea1 HASL c\u00f3 ch\u00ec kh\u00f4ng?<\/h3>\n\n\n\n<p>\u0110\u00fang v\u1eady, n\u1ebfu \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u00fang c\u00e1ch. C\u00f4ng ngh\u1ec7 HASL kh\u00f4ng ch\u00ec s\u1eed d\u1ee5ng c\u00e1c h\u1ee3p kim SAC c\u00f3 kh\u1ea3 n\u0103ng b\u00e1m d\u00ednh v\u00e0 \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc tuy\u1ec7t v\u1eddi. Nguy c\u01a1 ch\u00ednh v\u1ec1 \u0111\u1ed9 tin c\u1eady xu\u1ea5t ph\u00e1t t\u1eeb s\u1ef1 h\u00ecnh th\u00e0nh l\u1edbp IMC n\u1ebfu qu\u00e1 tr\u00ecnh gia nhi\u1ec7t di\u1ec5n ra \u1edf nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao ho\u1eb7c qu\u00e1 ch\u1eadm. V\u1edbi t\u1ed1c \u0111\u1ed9 l\u00e0m m\u00e1t \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t \u1edf m\u1ee9c l\u00ean \u0111\u1ebfn 4\u00b0C\/s, c\u00e1c m\u1ed1i h\u00e0n HASL kh\u00f4ng ch\u00ec th\u01b0\u1eddng cho hi\u1ec7u su\u1ea5t t\u1ed1t h\u01a1n so v\u1edbi c\u00e1c m\u1ed1i h\u00e0n c\u00f3 ch\u00ec trong \u0111i\u1ec1u ki\u1ec7n th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9 cao.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Lo\u1ea1i b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n n\u00e0o l\u00e0 ph\u00f9 h\u1ee3p nh\u1ea5t cho vi\u1ec7c l\u1eafp r\u00e1p BGA c\u00f3 kho\u1ea3ng c\u00e1ch ch\u00e2n nh\u1ecf?<\/h3>\n\n\n\n<p>ENIG l\u00e0 l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u trong ng\u00e0nh v\u00ec \u0111\u1ed9 ph\u1eb3ng g\u1ea7n nh\u01b0 ho\u00e0n h\u1ea3o (&lt;1,5 \u00b5m) c\u1ee7a n\u00f3 h\u1ed7 tr\u1ee3 c\u00e1c m\u1ea1ch BGA c\u00f3 kho\u1ea3ng c\u00e1ch ch\u00e2n 0,4 mm. L\u1edbp m\u1ea1 b\u1ea1c ng\u00e2m (Immersion Silver) \u0111\u1ee9ng th\u1ee9 hai trong c\u00e1c thi\u1ebft k\u1ebf RF, n\u01a1i t\u1ed5n th\u1ea5t t\u1eeb t\u00ednh c\u1ee7a niken l\u00e0 kh\u00f4ng th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c. L\u1edbp m\u1ea1 HASL kh\u00f4ng ch\u00ec kh\u00f4ng \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb cho c\u00e1c kho\u1ea3ng c\u00e1ch ch\u00e2n d\u01b0\u1edbi 0,65 mm do s\u1ef1 ch\u00eanh l\u1ec7ch v\u1ec1 \u0111\u1ed9 d\u00e0y.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng r\u1ed7ng BGA trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p kh\u00f4ng ch\u00ec?<\/h3>\n\n\n\n<p>S\u1eed d\u1ee5ng keo SAC305 k\u1ebft h\u1ee3p v\u1edbi b\u1ed9t lo\u1ea1i 4 v\u00e0 \u0111i\u1ec1u ch\u1ec9nh t\u1ed1c \u0111\u1ed9 t\u0103ng nhi\u1ec7t trong qu\u00e1 tr\u00ecnh h\u00e0n l\u1ea1i kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 1,5\u00b0C\/s t\u1ea1i v\u00f9ng gi\u1eef nhi\u1ec7t. Duy tr\u00ec th\u1eddi gian \u1edf tr\u00ean nhi\u1ec7t \u0111\u1ed9 l\u1ecfng trong kho\u1ea3ng 60\u201390 gi\u00e2y, v\u00e0 n\u1ebfu c\u00f3 th\u1ec3, n\u00ean s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p h\u00e0n l\u1ea1i c\u00f3 h\u1ed7 tr\u1ee3 ch\u00e2n kh\u00f4ng. Ch\u00fang t\u00f4i th\u01b0\u1eddng xuy\u00ean \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ef7 l\u1ec7 l\u1ed7 r\u1ed7ng d\u01b0\u1edbi 10% ngay c\u1ea3 \u0111\u1ed1i v\u1edbi c\u00e1c BGA c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn (\u226525 mm).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Vi\u1ec7c h\u00e0n kh\u00f4ng ch\u00ec c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u kh\u00f4ng?<\/h3>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c t\u00edn hi\u1ec7u s\u1ed1 c\u00f3 t\u1ea7n s\u1ed1 d\u01b0\u1edbi 5 GHz, t\u00e1c \u0111\u1ed9ng n\u00e0y l\u00e0 kh\u00f4ng \u0111\u00e1ng k\u1ec3. \u1ede c\u00e1c t\u1ea7n s\u1ed1 cao h\u01a1n, vi\u1ec7c l\u1ef1a ch\u1ecdn l\u1edbp ph\u1ee7 b\u1ec1 m\u1eb7t tr\u1edf n\u00ean quan tr\u1ecdng h\u01a1n. C\u00f4ng ngh\u1ec7 m\u1ea1 b\u1ea1c ng\u00e2m (Immersion Silver) v\u00e0 OSP mang l\u1ea1i m\u1ee9c t\u1ed5n th\u1ea5t ch\u00e8n th\u1ea5p h\u01a1n m\u1ed9t ch\u00fat so v\u1edbi ENIG do tr\u00e1nh \u0111\u01b0\u1ee3c hi\u1ec7u \u1ee9ng da c\u1ee7a niken. C\u00e1c k\u1ebft qu\u1ea3 \u0111o l\u01b0\u1eddng th\u00f4ng s\u1ed1 S n\u1ed9i b\u1ed9 c\u1ee7a ch\u00fang t\u00f4i cho th\u1ea5y m\u1ee9c c\u1ea3i thi\u1ec7n t\u1eeb 0,15\u20130,25 dB tr\u00ean m\u1ed7i inch \u1edf t\u1ea7n s\u1ed1 10 GHz khi s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 m\u1ea1 b\u1ea1c ng\u00e2m.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00f3 ng\u00e0nh n\u00e0o v\u1eabn \u0111\u01b0\u1ee3c mi\u1ec5n tr\u1eeb kh\u1ecfi c\u00e1c y\u00eau c\u1ea7u v\u1ec1 s\u1ea3n ph\u1ea9m kh\u00f4ng ch\u1ee9a ch\u00ec theo RoHS kh\u00f4ng?<\/h3>\n\n\n\n<p>\u0110\u00fang v\u1eady. Thi\u1ebft b\u1ecb qu\u00e2n s\u1ef1 v\u00e0 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, m\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb y t\u1ebf, c\u00f9ng v\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u00e1y ch\u1ee7 quy m\u00f4 l\u1edbn v\u1eabn c\u00f2n \u0111\u01b0\u1ee3c mi\u1ec5n tr\u1eeb, nh\u01b0ng c\u00e1c quy \u0111\u1ecbnh mi\u1ec5n tr\u1eeb n\u00e0y \u0111ang d\u1ea7n \u0111\u01b0\u1ee3c b\u00e3i b\u1ecf. Ngay c\u1ea3 c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1ee3c mi\u1ec5n tr\u1eeb hi\u1ec7n nay c\u0169ng th\u01b0\u1eddng l\u1ef1a ch\u1ecdn s\u1eed d\u1ee5ng ch\u00ec kh\u00f4ng ch\u1ee9a ch\u00ec \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh b\u1ec1n v\u1eefng cho chu\u1ed7i cung \u1ee9ng trong t\u01b0\u01a1ng lai v\u00e0 t\u1eadn d\u1ee5ng ngu\u1ed3n cung linh ki\u1ec7n d\u1ed3i d\u00e0o h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha cao (High-Tg) ph\u00f9 h\u1ee3p cho thi\u1ebft k\u1ebf kh\u00f4ng ch\u00ec c\u1ee7a t\u00f4i?<\/h3>\n\n\n\n<p>H\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi v\u1eadt li\u1ec7u FR-4 ti\u00eau chu\u1ea9n c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha (Tg) l\u00e0 170\u00b0C. N\u1ebfu b\u1ea3ng m\u1ea1ch c\u1ee7a b\u1ea1n s\u1eed d\u1ee5ng l\u1edbp \u0111\u1ed3ng d\u00e0y (&gt;3 oz), c\u00f3 \u0111\u1ed9 d\u00e0y tr\u00ean 2,4 mm ho\u1eb7c ph\u1ea3i tr\u1ea3i qua h\u00e0ng ngh\u00ecn chu k\u1ef3 nhi\u1ec7t, h\u00e3y c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng polyimide ho\u1eb7c v\u1eadt li\u1ec7u laminate c\u00f3 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t (CTE) th\u1ea5p. H\u00e3y cung c\u1ea5p c\u00e1c y\u00eau c\u1ea7u v\u1ec1 chu k\u1ef3 nhi\u1ec7t cho nh\u00e0 s\u1ea3n xu\u1ea5t PCB, v\u00e0 h\u1ecd s\u1ebd \u0111\u1ec1 xu\u1ea5t lo\u1ea1i v\u1eadt li\u1ec7u c\u00f3 ch\u1ec9 s\u1ed1 gi\u00e3n n\u1edf theo tr\u1ee5c Z ph\u00f9 h\u1ee3p.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">B\u1ea1n \u0111\u00e3 s\u1eb5n s\u00e0ng t\u1ef1 tin s\u1ea3n xu\u1ea5t c\u00e1c b\u1ea3ng m\u1ea1ch in kh\u00f4ng ch\u1ee9a ch\u00ec ch\u01b0a?<\/h2>\n\n\n\n<p>L\u1eafp r\u00e1p b\u1ea3ng m\u1ea1ch in kh\u00f4ng ch\u00ec l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n ho\u00e0n thi\u1ec7n v\u00e0 ch\u1ee9ng minh hi\u1ec7u qu\u1ea3 khi k\u1ebft h\u1ee3p \u0111\u00fang v\u1eadt li\u1ec7u, quy tr\u00ecnh ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c c\u00f9ng ph\u00e2n t\u00edch thi\u1ebft k\u1ebf h\u01b0\u1edbng t\u1edbi s\u1ea3n xu\u1ea5t chuy\u00ean s\u00e2u. V\u1edbi h\u01a1n 15 n\u0103m kinh nghi\u1ec7m s\u1ea3n xu\u1ea5t tu\u00e2n th\u1ee7 RoHS v\u00e0 c\u00e1c ch\u1ee9ng nh\u1eadn nh\u01b0 ISO 9001 v\u00e0 UL, ch\u00fang t\u00f4i h\u1ed7 tr\u1ee3 c\u00e1c k\u1ef9 s\u01b0 chuy\u1ec3n \u0111\u1ed5i su\u00f4n s\u1ebb t\u1eeb giai \u0111o\u1ea1n m\u1eabu th\u1eed sang s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-a89b3969 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button spectra-popup-trigger-4901\"><a class=\"wp-block-button__link wp-element-button\">Nh\u1eadn b\u00e1o gi\u00e1 PCBA tr\u1ecdn g\u00f3i nhanh ch\u00f3ng<\/a><\/div>\n<\/div>\n\n\n\n<p>H\u00e3y g\u1eedi c\u00e1c t\u1ec7p thi\u1ebft k\u1ebf v\u00e0 y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 tin c\u1eady c\u1ee7a qu\u00fd kh\u00e1ch \u0111\u1ebfn \u0111\u1ed9i ng\u0169 c\u1ee7a ch\u00fang t\u00f4i. Ch\u00fang t\u00f4i s\u1ebd xem x\u00e9t c\u1ea5u tr\u00fac l\u1edbp c\u1ee7a qu\u00fd kh\u00e1ch, \u0111\u1ec1 xu\u1ea5t ph\u01b0\u01a1ng ph\u00e1p ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t t\u1ed1i \u01b0u cho nhu c\u1ea7u t\u00edn hi\u1ec7u c\u1ee7a qu\u00fd kh\u00e1ch, v\u00e0 cung c\u1ea5p b\u00e1o gi\u00e1 mi\u1ec5n ph\u00ed \u2014 th\u01b0\u1eddng trong v\u00f2ng 4 gi\u1edd. H\u00e3y c\u00f9ng nhau t\u1ea1o ra nh\u1eefng s\u1ea3n ph\u1ea9m \u0111\u00e1ng tin c\u1eady v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>IntroductionLead\u2011free PCB assembly is no longer optional\u2014it is the industry standard. The EU\u2019s RoHS directive strictly limits lead to less 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