{"id":5137,"date":"2026-07-29T08:35:58","date_gmt":"2026-07-29T08:35:58","guid":{"rendered":"https:\/\/flj-pcb.com\/?p=5137"},"modified":"2026-07-29T08:36:02","modified_gmt":"2026-07-29T08:36:02","slug":"optimizing-reflow-soldering-profiles-for-hdi-sensor-pcbs","status":"publish","type":"post","link":"https:\/\/flj-pcb.com\/vi\/optimizing-reflow-soldering-profiles-for-hdi-sensor-pcbs\/","title":{"rendered":"T\u1ed1i \u01b0u h\u00f3a c\u00e1c \u0111\u01b0\u1eddng cong h\u00e0n n\u00f3ng ch\u1ea3y cho b\u1ea3ng m\u1ea1ch in c\u1ea3m bi\u1ebfn HDI"},"content":{"rendered":"<style>\n\n       .article-container h1 {\n            font-size: 2.4rem;\n            font-weight: 700;\n            color: #1a202c;\n            line-height: 1.25;\n            border-left: 5px solid #FE5D00;\n            padding-left: 18px;\n            margin-bottom: 32px;\n        }\n\n      .article-container  h2 {\n            font-size: 1.75rem;\n            font-weight: 700;\n            color: #1a202c;\n            margin-top: 56px;\n            margin-bottom: 20px;\n            padding-bottom: 8px;\n            border-bottom: 3px solid #FE5D00;\n            display: inline-block;\n        }\n\n       .article-container h3 {\n            font-size: 1.25rem;\n            font-weight: 600;\n            color: #FE5D00;\n            margin-top: 28px;\n            margin-bottom: 12px;\n        }\n\n      .article-container  p {\n            margin-bottom: 16px;\n            color: #2d3748;\n        }\n\n      .article-container  strong {\n            color: #1a202c;\n            font-weight: 600;\n        }\n\n       .article-container ul {\n            margin-left: 28px;\n            margin-bottom: 16px;\n        }\n\n       .article-container li {\n            margin-bottom: 10px;\n        }\n\n       .article-container a {\n            color: #FE5D00;\n            text-decoration: none;\n            border-bottom: 1px solid transparent;\n            transition: border-color 0.2s ease;\n        }\n\n       .article-container a:hover {\n            border-bottom-color: #FE5D00;\n        }\n\n        \/* Full-width image placeholder, no fixed height *\/\n       .article-container .img-placeholder {\n            width: 100%;\n            background-color: #e9ecef;\n            border: 1px solid #dee2e6;\n            border-radius: 4px;\n            display: flex;\n            align-items: center;\n            justify-content: center;\n            color: #6c757d;\n            font-style: italic;\n            padding: 72px 20px;\n            margin: 28px 0;\n            font-size: 15px;\n        }\n\n        \/* Data table style *\/\n       .article-container .data-table {\n            width: 100%;\n            border-collapse: collapse;\n            margin: 24px 0;\n            font-size: 0.95rem;\n        }\n        .data-table th {\n            background-color: #FE5D00;\n            color: #ffffff;\n            padding: 12px 14px;\n            text-align: left;\n            font-weight: 600;\n        }\n        .data-table td {\n            padding: 12px 14px;\n            border-bottom: 1px solid #e2e8f0;\n            vertical-align: middle;\n        }\n        .data-table tr:nth-child(even) {\n            background-color: #f8fafc;\n        }\n        .data-table tr:hover {\n            background-color: #fff7f2;\n        }\n    <\/style>\n<div class=\"article-container\">\n\n    <p>Trong thi\u1ebft k\u1ebf \u0111i\u1ec7n t\u1eed cao c\u1ea5p, m\u1ed9t chip BGA c\u00f3 kho\u1ea3ng c\u00e1ch ch\u00e2n 0,4 mm, c\u00e1c \u0111i\u1ec7n tr\u1edf v\u00e0 t\u1ee5 \u0111i\u1ec7n si\u00eau nh\u1ecf lo\u1ea1i 0201, c\u00f9ng v\u1edbi m\u1ed9t c\u1ea3m bi\u1ebfn MEMS r\u1ea5t nh\u1ea1y c\u1ea3m v\u1edbi nhi\u1ec7t \u0111\u1ec1u \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed ch\u1eadt ch\u1ed9i tr\u00ean m\u1ed9t b\u1ea3ng m\u1ea1ch k\u1ebft n\u1ed1i m\u1eadt \u0111\u1ed9 cao (HDI). Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, quy tr\u00ecnh h\u00e0n l\u1ea1i ti\u00eau chu\u1ea9n c\u1ee7a IPC th\u01b0\u1eddng l\u00e0 nguy\u00ean nh\u00e2n d\u1eabn \u0111\u1ebfn th\u1ea3m h\u1ecda. Trong c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p <strong>S\u1ea3n xu\u1ea5t b\u1ea3ng m\u1ea1ch in (PCB)<\/strong>, vi\u1ec7c ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh \u0111\u1ed1i v\u1edbi n\u0103ng su\u1ea5t s\u1ea3n ph\u1ea9m v\u00e0 \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i.<\/p>\n\n    <p>Nhi\u1ec1u k\u1ef9 s\u01b0 ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 nh\u1eadp h\u1ed3 s\u01a1 ti\u00eau chu\u1ea9n t\u1eeb nh\u00e0 cung c\u1ea5p b\u1ed9t h\u00e0n v\u00e0o m\u00e1y \u0111\u1eb7t linh ki\u1ec7n. H\u1ecd b\u1ecf qua \u201ckho\u1ea3ng c\u00e1ch kh\u1ed1i l\u01b0\u1ee3ng nhi\u1ec7t\u201d v\u1ed1n l\u00e0 \u0111\u1eb7c th\u00f9 c\u1ee7a c\u00e1c b\u1ea3ng m\u1ea1ch c\u1ea3m bi\u1ebfn m\u1eadt \u0111\u1ed9 cao. C\u00e1c v\u00f9ng \u0111\u1ed3ng n\u1ed1i \u0111\u1ea5t r\u1ed9ng l\u1edbn h\u1ea5p th\u1ee5 nhi\u1ec7t c\u1ef1c m\u1ea1nh, nh\u01b0ng c\u00e1c ch\u00e2n c\u1ea3m bi\u1ebfn nh\u1ecf b\u00e9 l\u1ea1i \u0111\u00e3 g\u1ea7n \u0111\u1ea1t \u0111\u1ebfn gi\u1edbi h\u1ea1n h\u01b0 h\u1ecfng do nhi\u1ec7t. T\u00f4i l\u00e0 m\u1ed9t chuy\u00ean gia d\u00e0y d\u1eb7n kinh nghi\u1ec7m v\u1edbi h\u01a1n 20 n\u0103m l\u00e0m vi\u1ec7c tr\u1ef1c ti\u1ebfp trong l\u0129nh v\u1ef1c thi\u1ebft k\u1ebf v\u00e0 s\u1ea3n xu\u1ea5t PCB. T\u00f4i bi\u1ebft r\u00f5 \u0111i\u1ec1u n\u00e0y: m\u1ed9t h\u1ed3 s\u01a1 nung ch\u1ea3y ho\u00e0n h\u1ea3o kh\u00f4ng bao gi\u1edd ch\u1ec9 l\u00e0 m\u1ed9t b\u1ed9 s\u1ed1 li\u1ec7u nhi\u1ec7t \u0111\u1ed9 c\u1ed1 \u0111\u1ecbnh. \u0110\u00f3 l\u00e0 m\u1ed9t c\u00f4ng th\u1ee9c \u0111\u1ed9ng, \u0111\u01b0\u1ee3c t\u00f9y ch\u1ec9nh s\u00e2u s\u1eafc d\u1ef1a tr\u00ean c\u1ea5u tr\u00fac l\u1edbp c\u1ee7a b\u1ea3ng m\u1ea1ch, b\u1ed1 tr\u00ed linh ki\u1ec7n v\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc c\u1ee5 th\u1ec3.<\/p>\n\n    <p>B\u00e0i vi\u1ebft n\u00e0y s\u1ebd ph\u00e2n t\u00edch s\u00e2u v\u1ec1 nh\u1eefng th\u00e1ch th\u1ee9c v\u1ec1 nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc c\u1ee7a c\u00e1c b\u1ea3ng m\u1ea1ch c\u1ea3m bi\u1ebfn m\u1eadt \u0111\u1ed9 cao trong c\u00f4ng ngh\u1ec7 l\u1eafp r\u00e1p b\u1ec1 m\u1eb7t (SMT). B\u00e0i vi\u1ebft c\u0169ng s\u1ebd \u0111\u1ec1 xu\u1ea5t c\u00e1c chi\u1ebfn l\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a c\u1ea5u h\u00ecnh \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh hi\u1ec7u qu\u1ea3 tr\u00ean d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t.<\/p>\n\n\n    <h2>T\u1ea1i sao c\u00e1c b\u1ea3ng m\u1ea1ch c\u1ea3m bi\u1ebfn m\u1eadt \u0111\u1ed9 cao l\u1ea1i l\u00e0 \u201cc\u01a1n \u00e1c m\u1ed9ng nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc\u201d \u0111\u1ed1i v\u1edbi ng\u00e0nh s\u1ea3n xu\u1ea5t PCB<\/h2>\n\n    <p>Tr\u00ean m\u1ed9t b\u1ea3ng m\u1ea1ch \u0111\u01a1n l\u1edbp ti\u00eau chu\u1ea9n, s\u1ef1 truy\u1ec1n nhi\u1ec7t di\u1ec5n ra t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u1ed3ng \u0111\u1ec1u. Tuy nhi\u00ean, tr\u00ean m\u1ed9t b\u1ea3ng m\u1ea1ch c\u1ea3m bi\u1ebfn m\u1eadt \u0111\u1ed9 cao, s\u1ef1 ph\u00e2n b\u1ed1 nhi\u1ec7t dung l\u1ea1i c\u1ef1c k\u1ef3 m\u1ea5t c\u00e2n b\u1eb1ng.<\/p>\n\n    <ul>\n        <li>\n            <strong>S\u1ef1 ch\u00eanh l\u1ec7ch r\u1ea5t l\u1edbn v\u1ec1 kh\u1ed1i l\u01b0\u1ee3ng nhi\u1ec7t<\/strong>: C\u00e1c l\u1ed7 d\u1eabn nhi\u1ec7t nhi\u1ec1u l\u1edbp v\u00e0 c\u00e1c v\u00f9ng \u0111\u1ed3ng \u0111\u1ed5 d\u01b0\u1edbi chip qu\u1ea3n l\u00fd ngu\u1ed3n h\u1ea5p th\u1ee5 nhi\u1ec7t nhanh h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c \u0111\u1ea7u n\u1ed1i c\u00f3 kho\u1ea3ng c\u00e1ch ch\u00e2n nh\u1ecf \u1edf m\u00e9p bo m\u1ea1ch. N\u1ebfu nhi\u1ec7t \u0111\u1ed9 t\u0103ng qu\u00e1 nhanh, c\u00e1c linh ki\u1ec7n nh\u1ecf s\u1ebd b\u1ecb ch\u1ea3y trong khi c\u00e1c pad l\u1edbn v\u1eabn \u0111ang h\u1ea5p th\u1ee5 nhi\u1ec7t. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn c\u00e1c m\u1ed1i h\u00e0n l\u1ea1nh. N\u1ebfu nhi\u1ec7t \u0111\u1ed9 t\u0103ng qu\u00e1 ch\u1eadm, ch\u1ea5t tr\u1ee3 h\u00e0n s\u1ebd kh\u00f4 s\u1edbm, g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng th\u1ea5m \u01b0\u1edbt k\u00e9m.\n        <\/li>\n        <li>\n            <strong>\u0110\u1ed9 nh\u1ea1y nhi\u1ec7t c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn c\u1ea3m bi\u1ebfn<\/strong>: C\u00e1c c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t kh\u00f4ng kh\u00ed, quang h\u1ecdc ho\u1eb7c \u00e2m thanh th\u01b0\u1eddng c\u00f3 c\u00e1c c\u1ea5u tr\u00fac c\u01a1 h\u1ecdc ho\u1eb7c m\u1ea1ch hi\u1ec7u chu\u1ea9n c\u1ef1c k\u1ef3 nh\u1ecf b\u00ean trong. Th\u1eddi gian \u1edf tr\u00ean nhi\u1ec7t \u0111\u1ed9 l\u1ecfng (TAL) qu\u00e1 l\u00e2u ho\u1eb7c nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec9nh qu\u00e1 cao c\u00f3 th\u1ec3 g\u00e2y ra bi\u1ebfn d\u1ea1ng polymer b\u00ean trong ho\u1eb7c s\u1ef1 thay \u0111\u1ed5i v\u0129nh vi\u1ec5n c\u1ee7a c\u00e1c th\u00f4ng s\u1ed1.\n        <\/li>\n        <li>\n            <strong>Nh\u1eefng th\u00e1ch th\u1ee9c vi m\u00f4 c\u1ee7a c\u00e1c g\u00f3i linh ki\u1ec7n c\u00f3 kho\u1ea3ng c\u00e1ch ch\u00e2n c\u1eafm nh\u1ecf<\/strong>: Mi\u1ebfng \u0111\u1ec7m t\u1ea3n nhi\u1ec7t n\u1eb1m d\u01b0\u1edbi c\u00e1c linh ki\u1ec7n QFN (Quad Flat No-lead) v\u00e0 WLCSP (Wafer-Level Chip-Scale Package) c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng gi\u1eef l\u1ea1i kh\u00ed v\u00e0 t\u1ea1o ra c\u00e1c kho\u1ea3ng tr\u1ed1ng trong qu\u00e1 tr\u00ecnh tho\u00e1t kh\u00ed. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7t ra nh\u1eefng y\u00eau c\u1ea7u nghi\u00eam ng\u1eb7t \u0111\u1ed1i v\u1edbi v\u00f9ng ng\u00e2m trong \u0111\u01b0\u1eddng cong nhi\u1ec7t t\u00e1i ch\u1ea3y.\n        <\/li>\n    <\/ul>\n\n    <p>Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd n\u00e0y l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 ch\u00fang ta th\u1ef1c hi\u1ec7n c\u00e1c \u0111i\u1ec1u ch\u1ec9nh ch\u00ednh x\u00e1c trong <a href=\"https:\/\/flj-pcb.com\/vi\/smt-reflow-soldering-process-types-design-guide\/\"><strong>Thi\u1ebft k\u1ebf quy tr\u00ecnh h\u00e0n l\u1ea1i SMT<\/strong><\/a>.<\/p>\n\n    <h2>Ph\u00e2n t\u00edch v\u00e0 t\u00e1i c\u1ea5u tr\u00fac: T\u1ed1i \u01b0u h\u00f3a c\u1ea5u h\u00ecnh b\u1ed1n giai \u0111o\u1ea1n cho c\u00e1c thi\u1ebft k\u1ebf m\u1eadt \u0111\u1ed9 cao<\/h2>\n\n\n\n    <p>Ch\u00fang ta c\u1ea7n \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 th\u1ea5m h\u00e0n th\u00edch h\u1ee3p tr\u00ean c\u00e1c m\u1ed1i h\u00e0n c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng nhi\u1ec7t cao m\u00e0 kh\u00f4ng l\u00e0m h\u1ecfng c\u1ea3m bi\u1ebfn. \u0110\u1ec3 l\u00e0m \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y, ch\u00fang ta ph\u1ea3i ti\u1ebfn h\u00e0nh \u0111i\u1ec1u ch\u1ec9nh c\u1ef1c k\u1ef3 ch\u00ednh x\u00e1c theo t\u1eebng b\u01b0\u1edbc \u0111\u1ed1i v\u1edbi quy tr\u00ecnh h\u00e0n b\u1ed1n giai \u0111o\u1ea1n truy\u1ec1n th\u1ed1ng.<\/p>\n\n    <h3>1. Giai \u0111o\u1ea1n l\u00e0m n\u00f3ng tr\u01b0\u1edbc: \u0110i\u1ec1u ch\u1ec9nh t\u1ed1c \u0111\u1ed9 t\u0103ng nhi\u1ec7t \u0111\u1ec3 ng\u0103n ng\u1eeba s\u1ed1c nhi\u1ec7t<\/h3>\n    <p>M\u1ee5c \u0111\u00edch c\u1ee7a v\u00f9ng gia nhi\u1ec7t s\u01a1 b\u1ed9 l\u00e0 l\u00e0m n\u00f3ng to\u00e0n b\u1ed9 b\u1ea3ng m\u1ea1ch in (PCB) m\u1ed9t c\u00e1ch \u0111\u1ed3ng \u0111\u1ec1u \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 k\u00edch ho\u1ea1t ch\u1ea5t h\u00e0n, \u0111\u1ed3ng th\u1eddi tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng s\u1ed1c nhi\u1ec7t.<\/p>\n    <p><strong>Chi\u1ebfn l\u01b0\u1ee3c<\/strong>: Ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd t\u1ed1c \u0111\u1ed9 t\u0103ng gi\u1eefa <strong>1,0\u00b0C\/s v\u00e0 1,5\u00b0C\/s<\/strong>. \u0110\u1ed1i v\u1edbi c\u00e1c bo m\u1ea1ch c\u00f3 c\u1ea3m bi\u1ebfn nh\u1ea1y c\u1ea3m, t\u1ed1c \u0111\u1ed9 t\u0103ng nhi\u1ec7t qu\u00e1 nhanh (&gt;2,0\u00b0C\/s) kh\u00f4ng ch\u1ec9 g\u00e2y ra c\u00e1c v\u1ebft n\u1ee9t vi m\u00f4 tr\u00ean t\u1ee5 g\u1ed1m m\u00e0 c\u00f2n khi\u1ebfn dung m\u00f4i trong b\u1ed9t h\u00e0n s\u00f4i m\u1ea1nh v\u00e0 t\u1ea1o ra c\u00e1c h\u1ea1t h\u00e0n. Th\u00f4ng th\u01b0\u1eddng, ch\u00fang t\u00f4i k\u00e9o d\u00e0i th\u1eddi gian l\u00e0m n\u00f3ng tr\u01b0\u1edbc \u0111\u1ec3 nhi\u1ec7t c\u00f3 \u0111\u1ee7 th\u1eddi gian truy\u1ec1n qua l\u1edbp \u0111i\u1ec7n m\u00f4i FR4 \u0111\u1ebfn c\u00e1c v\u00f9ng \u0111\u1ed3ng b\u00ean trong.<\/p>\n\n    <h3>2. Giai \u0111o\u1ea1n ng\u00e2m: \u201cC\u01a1 h\u1ed9i v\u00e0ng\u201d \u0111\u1ec3 c\u00e2n b\u1eb1ng ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9<\/h3>\n    <p>\u0110\u00e2y l\u00e0 giai \u0111o\u1ea1n quan tr\u1ecdng nh\u1ea5t trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t b\u1ea3ng m\u1ea1ch m\u1eadt \u0111\u1ed9 cao, th\u01b0\u1eddng \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb 150\u00b0C \u0111\u1ebfn 200\u00b0C.<\/p>\n    <p><strong>Chi\u1ebfn l\u01b0\u1ee3c<\/strong>: K\u00e9o d\u00e0i th\u1eddi gian ng\u00e2m \u0111\u1ebfn <strong>T\u1eeb 90 \u0111\u1ebfn 120 gi\u00e2y<\/strong>. Kho\u1ea3ng th\u1eddi gian n\u00e0y gi\u00fap ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 (\u0394T) gi\u1eefa c\u00e1c v\u00f9ng \u0111\u1ed3ng c\u00f3 di\u1ec7n t\u00edch l\u1edbn v\u00e0 c\u00e1c linh ki\u1ec7n nh\u1ecf thu h\u1eb9p xu\u1ed1ng d\u01b0\u1edbi 5\u00b0C. Ngo\u00e0i ra, th\u1eddi gian ng\u00e2m \u0111\u1ee7 l\u00e2u s\u1ebd k\u00edch ho\u1ea1t ho\u00e0n to\u00e0n ch\u1ea5t tr\u1ee3 h\u00e0n trong b\u1ed9t h\u00e0n, l\u00e0m s\u1ea1ch c\u00e1c oxit tr\u00ean b\u1ec1 m\u1eb7t \u0111\u1ebf h\u00e0n v\u00e0 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho qu\u00e1 tr\u00ecnh tho\u00e1t kh\u00ed sau \u0111\u00f3. \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 gi\u1ea3m thi\u1ec3u c\u00e1c l\u1ed7 r\u1ed7ng d\u01b0\u1edbi c\u00e1c g\u00f3i QFN.<\/p>\n\n    <h3>3. Giai \u0111o\u1ea1n nung l\u1ea1i: Ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec9nh v\u00e0 TAL<\/h3>\n    <p>\u0110i\u1ec3m n\u00f3ng ch\u1ea3y c\u1ee7a ch\u1ea5t h\u00e0n kh\u00f4ng ch\u00ec (nh\u01b0 SAC305) l\u00e0 217\u00b0C. \u0110\u1ed1i v\u1edbi c\u00e1c bo m\u1ea1ch c\u1ea3m bi\u1ebfn c\u00f3 m\u1eadt \u0111\u1ed9 linh ki\u1ec7n cao, ch\u00fang t\u00f4i ph\u1ea3i c\u00e2n b\u1eb1ng gi\u1eefa vi\u1ec7c \u201ch\u00e0n xuy\u00ean qua\u201d v\u00e0 \u201ckh\u00f4ng l\u00e0m ch\u00e1y linh ki\u1ec7n\u201d.<\/p>\n    <p><strong>Chi\u1ebfn l\u01b0\u1ee3c<\/strong>: \u0110i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 c\u1ef1c \u0111\u1ea1i trong kho\u1ea3ng t\u1eeb <strong>235\u00b0C v\u00e0 242\u00b0C<\/strong> (th\u1ea5p h\u01a1n m\u1ed9t ch\u00fat so v\u1edbi m\u1ee9c ti\u00eau chu\u1ea9n 245\u00b0C \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u1ea3m bi\u1ebfn). Th\u1eddi gian \u1edf tr\u00ean nhi\u1ec7t \u0111\u1ed9 l\u1ecfng (TAL) n\u00ean l\u00e0 <strong>T\u1eeb 45 \u0111\u1ebfn 60 gi\u00e2y<\/strong>. Kho\u1ea3ng th\u1eddi gian n\u00e0y \u0111\u1ee7 \u0111\u1ec3 ch\u1ea5t h\u00e0n th\u1ea5m \u01b0\u1edbt ho\u00e0n to\u00e0n v\u00e0 t\u1ea1o th\u00e0nh m\u1ed9t h\u1ee3p ch\u1ea5t li\u00ean kim lo\u1ea1i (IMC) b\u1ec1n v\u1eefng. \u0110i\u1ec1u n\u00e0y c\u0169ng gi\u00fap gi\u1ea3m thi\u1ec3u th\u1eddi gian c\u1ea3m bi\u1ebfn ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec7t \u0111\u1ed9 cao.<\/p>\n\n    <h3>4. Giai \u0111o\u1ea1n l\u00e0m ngu\u1ed9i: Tinh ch\u1ec9nh c\u1ea5u tr\u00fac h\u1ea1t<\/h3>\n    <p>T\u1ed1c \u0111\u1ed9 l\u00e0m ngu\u1ed9i \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc c\u1ee7a c\u00e1c m\u1ed1i h\u00e0n.<\/p>\n    <p><strong>Chi\u1ebfn l\u01b0\u1ee3c<\/strong>: Duy tr\u00ec \u0111\u1ed9 d\u1ed1c l\u00e0m m\u00e1t \u1edf m\u1ee9c <strong>t\u1eeb 2,0\u00b0C\/s \u0111\u1ebfn 4,0\u00b0C\/s<\/strong>. N\u1ebfu t\u1ed1c \u0111\u1ed9 qu\u00e1 ch\u1eadm, c\u1ea5u tr\u00fac h\u1ea1t c\u1ee7a m\u1ed1i h\u00e0n s\u1ebd th\u00f4 v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ecfi nhi\u1ec7t s\u1ebd k\u00e9m. N\u1ebfu t\u1ed1c \u0111\u1ed9 qu\u00e1 nhanh, \u1ee9ng su\u1ea5t nhi\u1ec7t s\u1ebd t\u00edch t\u1ee5 qu\u00e1 m\u1ee9c gi\u1eefa c\u00e1c qu\u1ea3 c\u1ea7u BGA v\u00e0 c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac tr\u00ean b\u1ea3ng m\u1ea1ch in (PCB), d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng l\u00f5m \u0111i\u1ec3m ti\u1ebfp x\u00fac.<\/p>\n\n    <h2>C\u00e1c l\u1ed7i h\u00e0n m\u1eadt \u0111\u1ed9 cao th\u01b0\u1eddng g\u1eb7p v\u00e0 ph\u00e2n t\u00edch nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5<\/h2>\n\n    <img decoding=\"async\" class=\"img-placeholder\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/07\/Common-SMT-Soldering-Defects.webp\" alt=\"Common High Density Soldering Defects\">\n\n\n    <p>Ngay c\u1ea3 khi h\u1ed3 s\u01a1 l\u00fd thuy\u1ebft l\u00e0 ho\u00e0n h\u1ea3o, v\u1eabn c\u00f3 th\u1ec3 x\u1ea3y ra nh\u1eefng sai l\u1ec7ch trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t th\u1ef1c t\u1ebf. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 h\u01b0\u1edbng d\u1eabn kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 li\u00ean quan \u0111\u1ebfn c\u00e1c l\u1ed7i tr\u00ean b\u1ea3ng m\u1ea1ch m\u1eadt \u0111\u1ed9 cao tr\u00ean d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t:<\/p>\n\n    <table class=\"data-table\">\n        <thead>\n        <tr>\n            <th>L\u1ed7i<\/th>\n            <th>Ph\u00e2n t\u00edch nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5<\/th>\n            <th>\u0110i\u1ec1u ch\u1ec9nh c\u1ea5u h\u00ecnh &amp; Chi\u1ebfn l\u01b0\u1ee3c DFM<\/th>\n        <\/tr>\n        <\/thead>\n        <tbody>\n        <tr>\n            <td><strong>Ch\u00f4n c\u1ea5t<\/strong><\/td>\n            <td>Do kh\u1ed1i l\u01b0\u1ee3ng nhi\u1ec7t kh\u00e1c nhau \u1edf hai \u0111\u1ea7u c\u1ee7a m\u1ed9t chi ti\u1ebft n\u00ean m\u1ed9t \u0111\u1ea7u s\u1ebd n\u00f3ng ch\u1ea3y tr\u01b0\u1edbc. Sau \u0111\u00f3, l\u1ef1c c\u0103ng b\u1ec1 m\u1eb7t s\u1ebd k\u00e9o chi ti\u1ebft \u0111\u00f3 l\u00ean.<\/td>\n            <td>Gi\u1ea3m t\u1ed1c \u0111\u1ed9 t\u0103ng nhi\u1ec7t trong qu\u00e1 tr\u00ecnh l\u00e0m n\u00f3ng tr\u01b0\u1edbc. Ki\u1ec3m tra <a href=\"https:\/\/flj-pcb.com\/vi\/how-to-design-a-pcb-so-a-manufacturer-wont-reject-it\/\"><strong>Thi\u1ebft k\u1ebf b\u1ed1 tr\u00ed m\u1ea1ch in (PCB)<\/strong><\/a> v\u00e0 \u0111\u1ea3m b\u1ea3o c\u00e1c \u0111\u01b0\u1eddng m\u1ea1ch \u1edf c\u1ea3 hai \u0111\u1ea7u c\u1ee7a c\u00e1c linh ki\u1ec7n 0402\/0201 ph\u1ea3i \u0111\u1ed1i x\u1ee9ng. Tr\u00e1nh n\u1ed1i m\u1ed9t \u0111\u1ea7u v\u00e0o v\u00f9ng \u0111\u1ed3ng ph\u1ee7 l\u1edbn.<\/td>\n        <\/tr>\n        <tr>\n            <td><strong>T\u1ef7 l\u1ec7 l\u1ed7 r\u1ed7ng cao \u1edf c\u00e1c g\u00f3i BGA\/QFN<\/strong><\/td>\n            <td>Ch\u1ea5t h\u00e0n kh\u00f4ng tho\u00e1t ra k\u1ecbp th\u1eddi trong qu\u00e1 tr\u00ecnh nung l\u1ea1i v\u00e0 b\u1ecb k\u1eb9t l\u1ea1i trong h\u1ed7n h\u1ee3p h\u00e0n n\u00f3ng ch\u1ea3y.<\/td>\n            <td>K\u00e9o d\u00e0i th\u1eddi gian ng\u00e2m \u0111\u1ec3 ch\u1ea5t tr\u1ee3 h\u00e0n tho\u00e1t kh\u00ed ho\u00e0n to\u00e0n. \u0110\u1ea3m b\u1ea3o nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec9nh \u0111\u1ee7 cao \u0111\u1ec3 duy tr\u00ec \u0111\u1ed9 nh\u1edbt c\u1ee7a ch\u1ea5t h\u00e0n \u1edf m\u1ee9c th\u1ea5p, t\u1eeb \u0111\u00f3 kh\u00ed c\u00f3 th\u1ec3 tho\u00e1t ra ngo\u00e0i.<\/td>\n        <\/tr>\n        <tr>\n            <td><strong>S\u1ef1 l\u1ec7ch \/ s\u1ef1 c\u1ed1 t\u00edn hi\u1ec7u c\u1ea3m bi\u1ebfn<\/strong><\/td>\n            <td>Nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec9nh qu\u00e1 cao ho\u1eb7c th\u1eddi gian TAL qu\u00e1 d\u00e0i. \u0110i\u1ec1u n\u00e0y g\u00e2y ra h\u01b0 h\u1ecfng do nhi\u1ec7t \u0111\u1ed1i v\u1edbi c\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a c\u1ea3m bi\u1ebfn.<\/td>\n            <td>Gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec9nh xu\u1ed1ng 3\u20135\u00b0C. N\u1ebfu c\u00e1c mi\u1ebfng \u0111\u1ec7m v\u1eabn kh\u00f4ng b\u00e1m \u0111\u01b0\u1ee3c ch\u1ea5t h\u00e0n, h\u00e3y c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng b\u1ed9t h\u00e0n nhi\u1ec7t \u0111\u1ed9 th\u1ea5p (nh\u01b0 SnBiAg) ho\u1eb7c thi\u1ebft k\u1ebf khu\u00f4n in nhi\u1ec1u b\u01b0\u1edbc.<\/td>\n        <\/tr>\n        <tr>\n            <td><strong>H\u00e0n l\u1ea1nh<\/strong><\/td>\n            <td>C\u00e1c ch\u1ed1t ti\u1ebfp x\u00fac v\u1edbi m\u1eb7t \u0111\u1ea5t c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng nhi\u1ec7t cao \u0111\u00e3 kh\u00f4ng \u0111\u1ea1t \u0111\u1ebfn \u0111i\u1ec3m n\u00f3ng ch\u1ea3y. Ho\u1eb7c c\u00f3 th\u1ec3 do nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m \u0111\u1ed9t ng\u1ed9t n\u00ean qu\u00e1 tr\u00ecnh h\u00ecnh th\u00e0nh IMC ch\u01b0a \u0111\u1ee7.<\/td>\n            <td>Th\u00eam thi\u1ebft k\u1ebf t\u1ea3n nhi\u1ec7t v\u1edbi c\u00e1c l\u1ed7 d\u1eabn nhi\u1ec7t cho c\u00e1c v\u00f9ng pad c\u00f3 di\u1ec7n t\u00edch l\u1edbn. Th\u00eam m\u1ed9t l\u1edbp \u0111\u1ec7m gi\u1eef nhi\u1ec7t tr\u01b0\u1edbc v\u00f9ng l\u00e0m m\u00e1t.<\/td>\n        <\/tr>\n        <\/tbody>\n    <\/table>\n\n    <h2>Th\u1ef1c hi\u1ec7n ch\u00ednh x\u00e1c: T\u1ea1i sao n\u00ean ch\u1ecdn Philifast \u0111\u1ec3 s\u1ea3n xu\u1ea5t PCB cho b\u1ea3ng m\u1ea1ch c\u1ea3m bi\u1ebfn m\u1eadt \u0111\u1ed9 cao<\/h2>\n\n    <img decoding=\"async\" class=\"img-placeholder\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/04\/smt-2.webp\" alt=\"SMT Line\">\n\n\n    <p>Vi\u1ec7c \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee9c \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 tin c\u1eady n\u00e0y kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 l\u00fd thuy\u1ebft tr\u00ean gi\u1ea5y. \u0110i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi m\u1ed9t \u0111\u1ed1i t\u00e1c s\u1ea3n xu\u1ea5t th\u1ef1c s\u1ef1 th\u1ea5u hi\u1ec3u s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a quy tr\u00ecnh s\u1ea3n xu\u1ea5t m\u1eadt \u0111\u1ed9 cao v\u00e0 s\u1edf h\u1eefu h\u1ec7 th\u1ed1ng thi\u1ebft b\u1ecb h\u1ed7 tr\u1ee3 \u0111\u1eb3ng c\u1ea5p h\u00e0ng \u0111\u1ea7u. \u0110\u00e2y ch\u00ednh l\u00e0 th\u1ebf m\u1ea1nh c\u1ed1t l\u00f5i c\u1ee7a <strong>Philifast<\/strong>.<\/p>\n\n    <p>Khi x\u1eed l\u00fd c\u00e1c b\u1ea3ng m\u1ea1ch c\u1ea3m bi\u1ebfn m\u1eadt \u0111\u1ed9 cao v\u1edbi c\u00e1c g\u00f3i linh ki\u1ec7n x\u1ebfp ch\u1ed3ng ph\u1ee9c t\u1ea1p, \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng ch\u00ednh l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh gi\u1edbi h\u1ea1n t\u1ed1i \u0111a c\u1ee7a quy tr\u00ecnh. D\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t c\u1ee7a Philifast c\u00f3 m\u1ed9t <strong>L\u00f2 nung l\u1ea1i 10 v\u00f9ng<\/strong> v\u00e0 m\u1ed9t d\u00e2y chuy\u1ec1n SMT ho\u00e0n to\u00e0n t\u1ef1 \u0111\u1ed9ng. V\u1edbi m\u01b0\u1eddi v\u00f9ng nhi\u1ec7t \u0111\u1ed9 \u0111\u1ed9c l\u1eadp, ch\u00fang t\u00f4i c\u00f3 th\u1ec3 t\u1ea1o ra m\u1ed9t \u0111\u1ed9 d\u1ed1c nhi\u1ec7t \u0111\u1ed9 r\u1ea5t nh\u1eb9 nh\u00e0ng v\u00e0 \u0111\u01b0\u1ee3c t\u00f9y ch\u1ec9nh cao, t\u1eeb \u0111\u00f3 gi\u1ea3i quy\u1ebft tri\u1ec7t \u0111\u1ec3 \u201ckho\u1ea3ng tr\u1ed1ng kh\u1ed1i l\u01b0\u1ee3ng nhi\u1ec7t\u201d \u0111\u00e3 \u0111\u1ec1 c\u1eadp tr\u01b0\u1edbc \u0111\u00f3.<\/p>\n\n    <p>\u0110\u1ed1i v\u1edbi c\u00e1c linh ki\u1ec7n nh\u1ecf v\u00e0 ph\u1ee9c t\u1ea1p nh\u01b0 BGA, WLCSP, QFN v\u00e0 POP (Package on Package), ch\u00fang t\u00f4i nh\u1eadn th\u1ee9c r\u00f5 nh\u1eefng r\u1ee7i ro khi h\u00e0n m\u00f9. V\u00ec v\u1eady, Philifast s\u1eed d\u1ee5ng <strong>Ki\u1ec3m tra quang h\u1ecdc t\u1ef1 \u0111\u1ed9ng (AOI) v\u00e0 ki\u1ec3m tra b\u1eb1ng tia X<\/strong> v\u1edbi c\u00f4ng ngh\u1ec7 100%. Tia X c\u00f3 th\u1ec3 xuy\u00ean qua v\u1ecf bao b\u00ec v\u00e0 \u0111o l\u01b0\u1eddng ch\u00ednh x\u00e1c t\u1ef7 l\u1ec7 l\u1ed7 r\u1ed7ng v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng c\u1ea7u n\u1ed1i tr\u00ean BGA. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 khuy\u1ebft t\u1eadt b\u00ean trong n\u00e0o kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c l\u1ecdt qua sang c\u00f4ng \u0111o\u1ea1n ti\u1ebfp theo.<\/p>\n\n    <p>B\u00ean c\u1ea1nh c\u00e1c quy tr\u00ecnh l\u1eafp r\u00e1p xu\u1ea5t s\u1eafc, c\u00e1c bo m\u1ea1ch c\u1ea3m bi\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng cao c\u00f2n c\u1ea7n m\u1ed9t chu\u1ed7i cung \u1ee9ng v\u1eefng ch\u1eafc. M\u1ea1ng l\u01b0\u1edbi thu mua linh ki\u1ec7n c\u1ee7a Philifast k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c nh\u00e0 ph\u00e2n ph\u1ed1i \u1ee7y quy\u1ec1n nh\u01b0 <strong>Digi-Key, Mouser v\u00e0 RS<\/strong>. \u0110i\u1ec1u n\u00e0y gi\u00fap ng\u0103n ch\u1eb7n c\u00e1c linh ki\u1ec7n gi\u1ea3 m\u1ea1o ngay t\u1eeb ngu\u1ed3n v\u00e0 \u0111\u1ea3m b\u1ea3o c\u00e1c c\u1ea3m bi\u1ebfn c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao c\u1ee7a qu\u00fd v\u1ecb c\u00f3 \u0111\u1ea7y \u0111\u1ee7 kh\u1ea3 n\u0103ng truy xu\u1ea5t ngu\u1ed3n g\u1ed1c ch\u00ednh h\u00e3ng.<\/p>\n\n    <p>Khi d\u1ef1 \u00e1n c\u1ee7a qu\u00fd kh\u00e1ch chuy\u1ec3n t\u1eeb giai \u0111o\u1ea1n nguy\u00ean m\u1eabu sang s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t, Philifast kh\u00f4ng ch\u1ec9 cung c\u1ea5p d\u1ecbch v\u1ee5 h\u00e0n. Ch\u00fang t\u00f4i cung c\u1ea5p c\u00e1c d\u1ecbch v\u1ee5 tr\u1ecdn g\u00f3i ngay t\u1eeb giai \u0111o\u1ea1n \u0111\u1ea7u <strong>Ph\u00e2n t\u00edch DFM (Thi\u1ebft k\u1ebf \u0111\u1ec3 d\u1ec5 s\u1ea3n xu\u1ea5t)<\/strong> \u0111\u1ec3 sau <strong>L\u1eadp tr\u00ecnh IC, ki\u1ec3m tra ch\u1ee9c n\u0103ng<\/strong>, v\u00e0 th\u1eadm ch\u00ed <strong>l\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7<\/strong>. Nh\u01b0 \u0111\u00e3 nh\u1ea5n m\u1ea1nh trong <a href=\"https:\/\/flj-pcb.com\/vi\/pcba-manufacturer-selection-guide\/\"><strong>L\u1ef1a ch\u1ecdn nh\u00e0 s\u1ea3n xu\u1ea5t PCBA \u0111\u00e1ng tin c\u1eady<\/strong><\/a>, vi\u1ec7c h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt to\u00e0n di\u1ec7n t\u1eeb \u0111\u1ea7u \u0111\u1ebfn cu\u1ed1i l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro d\u1ef1 \u00e1n.<\/p>\n\n    <h2>K\u1ebft lu\u1eadn<\/h2>\n    <p>Vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a \u0111\u01b0\u1eddng cong nhi\u1ec7t h\u00e0n l\u1ea1i cho c\u00e1c bo m\u1ea1ch c\u1ea3m bi\u1ebfn m\u1eadt \u0111\u1ed9 cao v\u1ec1 b\u1ea3n ch\u1ea5t l\u00e0 m\u1ed9t \u201ctr\u00f2 ch\u01a1i\u201d nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc trong th\u1ebf gi\u1edbi vi m\u00f4. T\u1eeb vi\u1ec7c ki\u1ec3m so\u00e1t t\u1ed1c \u0111\u1ed9 t\u0103ng nhi\u1ec7t \u0111\u1ec3 ng\u0103n hi\u1ec7n t\u01b0\u1ee3ng \"tombstoning\", \u0111\u1ebfn vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh ch\u00ednh x\u00e1c nhi\u1ec7t \u0111\u1ed9 t\u1ea1i \u0111i\u1ec3m h\u00e0n (TAL) \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c linh ki\u1ec7n nh\u1ea1y c\u1ea3m, m\u1ed7i b\u01b0\u1edbc \u0111\u1ec1u \u0111\u00f2i h\u1ecfi kinh nghi\u1ec7m k\u1ef9 thu\u1eadt s\u00e2u r\u1ed9ng v\u00e0 thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t ch\u00ednh x\u00e1c. Ch\u1ec9 khi k\u1ebft h\u1ee3p m\u1ed9t c\u00e1ch li\u1ec1n m\u1ea1ch c\u00e1c quy t\u1eafc thi\u1ebft k\u1ebf nghi\u00eam ng\u1eb7t v\u1edbi quy tr\u00ecnh SMT h\u00e0ng \u0111\u1ea7u, ch\u00fang ta m\u1edbi c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c s\u1ea3n ph\u1ea9m \u0111i\u1ec7n t\u1eed ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh trong m\u1ecdi \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/p>\n\n    <p>N\u1ebfu qu\u00fd v\u1ecb \u0111ang ph\u00e1t tri\u1ec3n c\u00e1c thi\u1ebft b\u1ecb c\u1ea3m bi\u1ebfn m\u1eadt \u0111\u1ed9 cao th\u1ebf h\u1ec7 m\u1edbi v\u00e0 c\u1ea7n m\u1ed9t \u0111\u1ed1i t\u00e1c s\u1ea3n xu\u1ea5t c\u00f3 kh\u1ea3 n\u0103ng bi\u1ebfn c\u00e1c \u0111\u01b0\u1eddng cong nhi\u1ec7t \u0111\u1ed9 ph\u1ee9c t\u1ea1p th\u00e0nh c\u00e1c m\u1ed1i h\u00e0n ho\u00e0n h\u1ea3o, h\u00e3y \u0111\u1ec3 \u0111\u1ed9i ng\u0169 chuy\u00ean nghi\u1ec7p c\u1ee7a ch\u00fang t\u00f4i lo li\u1ec7u vi\u1ec7c n\u00e0y cho qu\u00fd v\u1ecb.<\/p>\n\n    <p><a href=\"https:\/\/flj-pcb.com\/vi\/\"><strong>H\u00e3y nh\u1eadn b\u00e1o gi\u00e1 s\u1ea3n xu\u1ea5t v\u00e0 l\u1eafp r\u00e1p PCB ngay h\u00f4m nay. H\u00e3y \u0111\u1ec3 \u0111\u1ed9i ng\u0169 k\u1ef9 s\u01b0 c\u1ee7a ch\u00fang t\u00f4i th\u1ef1c hi\u1ec7n ph\u00e2n t\u00edch DFM mi\u1ec5n ph\u00ed cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n.<\/strong><\/a><\/p>\n\n<\/div>","protected":false},"excerpt":{"rendered":"<p>In high-end electronic design, a 0.4 mm pitch BGA chip, tiny 0201 resistors and capacitors, and a MEMS sensor that 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