{"id":9385,"date":"2025-12-11T09:41:03","date_gmt":"2025-12-11T09:41:03","guid":{"rendered":"https:\/\/www.omch.com\/?p=9385"},"modified":"2025-12-11T09:41:04","modified_gmt":"2025-12-11T09:41:04","slug":"printed-circuit-board-assembly","status":"publish","type":"post","link":"https:\/\/www.omch.com\/vi\/printed-circuit-board-assembly\/","title":{"rendered":"L\u1eafp r\u00e1p b\u1ea3ng m\u1ea1ch in c\u00f4ng nghi\u1ec7p: H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 \u0111\u1ed9 tin c\u1eady"},"content":{"rendered":"<p>Khi n\u00f3i \u0111\u1ebfn t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p, M\u1ea1ch in l\u1eafp r\u00e1p (PCBA) ch\u00ednh l\u00e0 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n trung t\u00e2m c\u1ee7a m\u00e1y m\u00f3c v\u00e0 c\u00e1c c\u00f4ng tr\u00ecnh h\u1ea1 t\u1ea7ng quan tr\u1ecdng. Tuy nhi\u00ean, l\u0129nh v\u1ef1c c\u00f4ng nghi\u1ec7p l\u1ea1i kh\u00e1c bi\u1ec7t so v\u1edbi ng\u00e0nh \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng. Trong khi m\u00f4i tr\u01b0\u1eddng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd l\u00e0 ti\u00eau chu\u1ea9n trong ng\u00e0nh \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng, th\u00ec \u0111\u1ed1i v\u1edbi thi\u1ebft b\u1ecb v\u00e0 m\u00e1y m\u00f3c c\u00f4ng nghi\u1ec7p, ch\u00fang ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c kh\u1eafc nghi\u1ec7t v\u00e0 c\u1ef1c \u0111oan, n\u01a1i c\u00f3 d\u1ea3i nhi\u1ec7t \u0111\u1ed9 dao \u0111\u1ed9ng t\u1eeb r\u1ea5t cao \u0111\u1ebfn r\u1ea5t th\u1ea5p, c\u00f9ng v\u1edbi \u0111\u1ed9 rung v\u00e0 nhi\u1ec5u \u0111i\u1ec7n t\u1eeb c\u1ef1c m\u1ea1nh.<\/p>\n\n\n\n<p>Trong ng\u00e0nh n\u00e0y, nh\u1eefng r\u1ee7i ro li\u00ean quan \u0111\u1ebfn vi\u1ec7c m\u1ed9t linh ki\u1ec7n b\u1ecb h\u1ecfng l\u00e0 r\u1ea5t nghi\u00eam tr\u1ecdng. C\u00e1c h\u1eadu qu\u1ea3 bao g\u1ed3m, nh\u01b0ng kh\u00f4ng gi\u1edbi h\u1ea1n \u1edf, nh\u1eefng t\u1ed5n th\u1ea5t nghi\u00eam tr\u1ecdng v\u00e0 chi ph\u00ed s\u1ea3n xu\u1ea5t ph\u00e1t sinh do th\u1eddi gian ng\u1eebng s\u1ea3n xu\u1ea5t, r\u1ee7i ro an to\u00e0n, c\u0169ng nh\u01b0 chi ph\u00ed li\u00ean quan \u0111\u1ebfn s\u1ea3n l\u01b0\u1ee3ng b\u1ecb m\u1ea5t. Do \u0111\u00f3, y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt h\u00e0ng \u0111\u1ea7u l\u00e0 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady. H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 k\u1ef9 thu\u1eadt c\u1ee7a bo m\u1ea1ch in c\u00f4ng nghi\u1ec7p (PCBA), t\u1eadp trung v\u00e0o quy tr\u00ecnh l\u1eafp r\u00e1p, c\u00e1c ti\u00eau chu\u1ea9n s\u1ea3n xu\u1ea5t PCB thi\u1ebft y\u1ebfu, vi\u1ec7c l\u1ef1a ch\u1ecdn linh ki\u1ec7n v\u00e0 quy tr\u00ecnh ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng nghi\u00eam ng\u1eb7t nh\u1eb1m \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh trong th\u1eddi gian d\u00e0i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0110\u1ecbnh ngh\u0129a: PCBA l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p>Trong m\u1eaft m\u1ed9t ng\u01b0\u1eddi kh\u00f4ng c\u00f3 chuy\u00ean m\u00f4n, m\u1ed9t m\u1ea1ch \u0111i\u1ec7n ch\u1eb3ng qua ch\u1ec9 l\u00e0 m\u1ed9t t\u1ea5m b\u1ea3ng m\u00e0u xanh l\u00e1 c\u00e2y c\u00f3 v\u00e0i ch\u1ea5m m\u00e0u b\u1ea1c tr\u00ean \u0111\u00f3. Tuy nhi\u00ean, \u0111\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c \u00fd ngh\u0129a c\u1ee7a PCBA, ng\u01b0\u1eddi ta ph\u1ea3i th\u1ef1c s\u1ef1 ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c t\u1ea5m b\u1ea3ng v\u1edbi m\u1ea1ch \u0111i\u1ec7n.<\/p>\n\n\n\n<p><strong>A <\/strong><strong>PCB<\/strong><strong>, ho\u1eb7c <\/strong><strong>B\u1ea3ng m\u1ea1ch in<\/strong><strong> (<\/strong>(trong l\u1ecbch s\u1eed, \u0111\u00f4i khi c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u1ea3ng m\u1ea1ch in ho\u1eb7c b\u1ea3ng m\u1ea1ch)<strong>,<\/strong> \u0111\u00f3 ch\u00ednh l\u00e0 t\u1ea5m m\u1ea1ch tr\u1ea7n. N\u00f3 l\u00e0 ch\u1ea5t n\u1ec1n, \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb v\u1eadt li\u1ec7u s\u1ee3i th\u1ee7y tinh FR-4 c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i c\u1ee5 th\u1ec3, c\u00f9ng v\u1edbi c\u00e1c \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ed3ng \u0111\u00e3 \u0111\u01b0\u1ee3c \u0103n m\u00f2n \u0111\u1ec3 t\u1ea1o th\u00e0nh c\u00e1c \u0111\u01b0\u1eddng d\u1eabn \u0111i\u1ec7n, v\u00e0 n\u00f3 ch\u00ednh l\u00e0 ti\u1ec1m n\u0103ng ch\u1ec9 c\u1ea7n \u0111\u01b0\u1ee3c khai th\u00e1c.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img alt=\"\" fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.omch.com\/wp-content\/uploads\/2025\/12\/PCB-1.webp\" class=\"wp-image-9382\" style=\"object-fit:cover;width:512px;height:383px\" srcset=\"https:\/\/www.omch.com\/wp-content\/uploads\/2025\/12\/PCB-1.webp 1024w, https:\/\/www.omch.com\/wp-content\/uploads\/2025\/12\/PCB-1-300x225.webp 300w, https:\/\/www.omch.com\/wp-content\/uploads\/2025\/12\/PCB-1-768x576.webp 768w, https:\/\/www.omch.com\/wp-content\/uploads\/2025\/12\/PCB-1-16x12.webp 16w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>PCBA, hay <\/strong><strong>B\u1ea3ng m\u1ea1ch in<\/strong><strong> H\u1ed9i \u0111\u1ed3ng<\/strong>, ch\u00ednh l\u00e0 ti\u1ec1m n\u0103ng \u0111\u00e3 \u0111\u01b0\u1ee3c hi\u1ec7n th\u1ef1c h\u00f3a. \u0110\u00f3 l\u00e0 b\u1ea3ng m\u1ea1ch \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1eafp r\u00e1p, tr\u00ean \u0111\u00f3 c\u00f3 c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed nh\u01b0 t\u1ee5 \u0111i\u1ec7n, c\u00f4ng t\u1eafc, \u0111i\u1ec7n tr\u1edf v\u00e0 r\u01a1le \u0111\u00e3 \u0111\u01b0\u1ee3c h\u00e0n v\u00e0o b\u1ea3ng m\u1ea1ch. Qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i t\u1eeb c\u00e1c b\u1ea3ng m\u1ea1ch in (PCB) tr\u1ea7n sang m\u1ed9t m\u1ea1ch \u0111i\u1ec7n t\u1eed ho\u1ea1t \u0111\u1ed9ng ch\u00ednh l\u00e0 c\u1ed1t l\u00f5i c\u1ee7a ng\u00e0nh c\u00f4ng nghi\u1ec7p n\u00e0y.<\/p>\n\n\n\n<p>N\u00f3i r\u1eb1ng m\u1ed9t c\u00f4ng \u0111o\u1ea1n ph\u1ee9c t\u1ea1p nh\u01b0 l\u1eafp r\u00e1p b\u1ea3ng m\u1ea1ch in trong l\u0129nh v\u1ef1c \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 \u201cvi\u1ec7c h\u00e0n m\u1ed9t s\u1ed1 linh ki\u1ec7n l\u00ean b\u1ea3ng m\u1ea1ch\u201d l\u00e0 m\u1ed9t c\u00e1ch \u0111\u00e1nh gi\u00e1 qu\u00e1 th\u1ea5p. Trong l\u0129nh v\u1ef1c c\u00f4ng nghi\u1ec7p, l\u1eafp r\u00e1p PCB l\u00e0 m\u1ed9t ng\u00e0nh k\u1ef9 thu\u1eadt \u0111\u1ed9c l\u1eadp. N\u00f3 kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t c\u00f4ng \u0111o\u1ea1n trong quy tr\u00ecnh s\u1ea3n xu\u1ea5t, m\u00e0 c\u00f2n l\u00e0 m\u1ed9t tri\u1ebft l\u00fd t\u1ed5ng th\u1ec3 bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Qu\u1ea3n l\u00fd chu\u1ed7i cung \u1ee9ng:<\/strong> s\u1ef1 \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u1eebng \u0111i\u1ec7n tr\u1edf v\u00e0 chip \u0111\u1ec1u l\u00e0 h\u00e0ng ch\u00ednh h\u00e3ng v\u00e0 v\u1eabn \u0111\u01b0\u1ee3c l\u01b0u h\u00e0nh trong h\u00e0ng th\u1eadp k\u1ef7.<\/li>\n\n\n\n<li><strong>DFM<\/strong><strong> (Thi\u1ebft k\u1ebf \u0111\u1ec3 s\u1ea3n xu\u1ea5t):<\/strong> vi\u1ec7c b\u1ed1 tr\u00ed c\u00e1c linh ki\u1ec7n tr\u00ean b\u1ea3ng m\u1ea1ch \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1eeb r\u1ea5t l\u00e2u tr\u01b0\u1edbc khi b\u1ea3ng m\u1ea1ch \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t, nh\u1eb1m \u0111\u1ea3m b\u1ea3o b\u1ea3ng m\u1ea1ch c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t m\u1ed9t c\u00e1ch nhanh ch\u00f3ng v\u00e0 \u0111\u00e1ng tin c\u1eady b\u1eb1ng nhi\u1ec1u k\u1ef9 thu\u1eadt kh\u00e1c nhau.<\/li>\n\n\n\n<li><strong>V\u00f2ng \u0111\u1eddi <\/strong><strong>B\u1ea3o tr\u00ec<\/strong><strong>:<\/strong> kh\u1ea3 n\u0103ng thi\u1ebft k\u1ebf m\u1ed9t s\u1ea3n ph\u1ea9m ng\u00e0y nay v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng s\u1ea3n ph\u1ea9m \u0111\u00f3 v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c b\u1ea3o d\u01b0\u1ee1ng v\u00e0 s\u1eeda ch\u1eefa sau m\u01b0\u1eddi l\u0103m n\u0103m n\u1eefa.<\/li>\n<\/ul>\n\n\n\n<p>Khi th\u1ef1c hi\u1ec7n gia c\u00f4ng PCB c\u00f4ng nghi\u1ec7p (PCBA), ng\u01b0\u1eddi ta kh\u00f4ng n\u00ean ch\u1ec9 ch\u1ecdn m\u1ed9t \u201cx\u01b0\u1edfng gia c\u00f4ng\u201d ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u1eafp c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed l\u00ean b\u1ea3ng m\u1ea1ch. Thay v\u00e0o \u0111\u00f3, ng\u01b0\u1eddi ta \u0111ang x\u00e2y d\u1ef1ng n\u1ec1n t\u1ea3ng cho uy t\u00edn c\u1ee7a ch\u00ednh s\u1ea3n ph\u1ea9m \u0111\u00f3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PCBA c\u00f4ng nghi\u1ec7p so v\u1edbi PCBA ti\u00eau d\u00f9ng: Nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t quan tr\u1ecdng<\/h2>\n\n\n\n<p>C\u00f3 ph\u1ea3i v\u00ec c\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p c\u00f3 ki\u1ebfn tr\u00fac ph\u1ee9c t\u1ea1p h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi b\u1ed9 x\u1eed l\u00fd c\u1ee7a m\u1ed9t chi\u1ebfc m\u00e1y t\u00ednh b\u1ea3ng ti\u00eau d\u00f9ng? Kh\u00f4ng. \u0110\u00f3 l\u00e0 do chi ph\u00ed ph\u00e1t sinh khi x\u1ea3y ra s\u1ef1 c\u1ed1.<\/p>\n\n\n\n<p>Trong khi \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh ch\u1ec9 c\u1ea7n kh\u1edfi \u0111\u1ed9ng l\u1ea1i khi g\u1eb7p s\u1ef1 c\u1ed1, th\u00ec PLC \u0111i\u1ec1u khi\u1ec3n l\u00f2 cao l\u1ea1i l\u00e0 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p ho\u00e0n to\u00e0n kh\u00e1c. \u0110\u1ed1i v\u1edbi c\u00e1c bo m\u1ea1ch in c\u00f4ng nghi\u1ec7p (PCBA), \u0111\u1ed9 tin c\u1eady \u0111\u01b0\u1ee3c \u0111\u1eb7t l\u00ean h\u00e0ng \u0111\u1ea7u \u2013 m\u1ed9t y\u00eau c\u1ea7u m\u00e0 kh\u00f4ng thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed n\u00e0o d\u00f9ng trong m\u1ee5c \u0111\u00edch th\u01b0\u01a1ng m\u1ea1i ph\u1ea3i \u0111\u00e1p \u1ee9ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ti\u00eau chu\u1ea9n IPC Lo\u1ea1i 2 so v\u1edbi Lo\u1ea1i 3<\/h3>\n\n\n\n<p>C\u00e1c ti\u00eau chu\u1ea9n ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ed1i v\u1edbi qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p linh ki\u1ec7n \u0111i\u1ec7n t\u1eed ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh b\u1edfi ti\u00eau chu\u1ea9n IPC-A-610.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Lo\u1ea1i 2 (S\u1ea3n ph\u1ea9m \u0111i\u1ec7n t\u1eed d\u00e0nh ri\u00eang cho d\u1ecbch v\u1ee5):<\/strong> Lo\u1ea1i n\u00e0y bao g\u1ed3m h\u1ea7u h\u1ebft c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng nh\u01b0 m\u00e1y t\u00ednh x\u00e1ch tay v\u00e0 c\u00e1c thi\u1ebft b\u1ecb gia d\u1ee5ng. C\u00e1c m\u1ea1ch \u0111i\u1ec7n t\u1eed n\u00e0y \u0111\u01b0\u1ee3c k\u1ef3 v\u1ecdng s\u1ebd ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng v\u00e0 c\u00f3 tu\u1ed5i th\u1ecd cao, nh\u01b0ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ch\u00fang kh\u00f4ng ph\u1ea3i l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ed1i v\u1edbi ch\u1ee9c n\u0103ng c\u1ee7a thi\u1ebft b\u1ecb.<\/li>\n\n\n\n<li><strong>Lo\u1ea1i 3 (Hi\u1ec7u su\u1ea5t cao\/\u0110i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t) <\/strong><strong>M\u00f4i tr\u01b0\u1eddng<\/strong><strong> (S\u1ea3n ph\u1ea9m \u0111i\u1ec7n t\u1eed):<\/strong> \u0110\u00e2y l\u00e0 ti\u00eau chu\u1ea9n v\u00e0ng trong l\u0129nh v\u1ef1c thi\u1ebft b\u1ecb y t\u1ebf, t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p v\u00e0 l\u1eafp r\u00e1p b\u1ea3ng m\u1ea1ch \u0111i\u1ec7n t\u1eed trong ng\u00e0nh h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/li>\n<\/ul>\n\n\n\n<p>\u0110i\u1ec1u t\u1ea1o n\u00ean s\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh l\u00e0 nh\u1eefng chi ti\u1ebft tinh t\u1ebf. H\u00e3y l\u1ea5y v\u00ed d\u1ee5 v\u1ec1 \u0111\u1ed9 l\u1ea5p \u0111\u1ea7y h\u00e0n. \u0110\u1ed1i v\u1edbi m\u1ed9t s\u1ea3n ph\u1ea9m ti\u00eau d\u00f9ng lo\u1ea1i 2, m\u1ed9t linh ki\u1ec7n Through-Hole ch\u1ec9 c\u1ea7n \u0111\u1ea1t \u0111\u1ed9 l\u1ea5p \u0111\u1ea7y h\u00e0n d\u1ecdc 50% trong l\u1ed7 \u0111\u1ec3 v\u01b0\u1ee3t qua ki\u1ec3m tra v\u1ec1 kh\u1ea3 n\u0103ng gi\u1eef linh ki\u1ec7n c\u1ed1 \u0111\u1ecbnh t\u1ea1i v\u1ecb tr\u00ed, v\u00e0 nh\u01b0 v\u1eady l\u00e0 \u0111\u1ee7.<\/p>\n\n\n\n<p>M\u1eb7t kh\u00e1c, \u0111\u1ed1i v\u1edbi s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i cho m\u1ee5c \u0111\u00edch c\u00f4ng nghi\u1ec7p thu\u1ed9c Lo\u1ea1i 3, m\u1ed1i h\u00e0n \u0111\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c h\u00e0n b\u1eb1ng h\u1ee3p kim h\u00e0n t\u1eeb 75% \u0111\u1ebfn 100%. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 nh\u1eb1m \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n \u0111\u1ee7 cao m\u00e0 c\u00f2n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u01a1 h\u1ecdc c\u1ea7n thi\u1ebft. M\u1ed1i h\u00e0n n\u00e0y \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t c\u1ea5u tr\u00fac c\u01a1 h\u1ecdc c\u00f3 ch\u1ee9c n\u0103ng h\u1ea5p th\u1ee5 va \u0111\u1eadp b\u1eb1ng c\u00e1ch ch\u1ecbu \u0111\u01b0\u1ee3c c\u00e1c rung \u0111\u1ed9ng li\u00ean t\u1ee5c th\u01b0\u1eddng th\u1ea5y t\u1ea1i nh\u00e0 m\u00e1y.<\/p>\n\n\n\n<p>H\u01a1n n\u1eefa, vi\u1ec7c ki\u1ec3m tra b\u1eb1ng m\u1eaft th\u01b0\u1eddng \u0111\u1ed1i v\u1edbi Lo\u1ea1i 3 di\u1ec5n ra v\u00f4 c\u00f9ng chi ti\u1ebft. Nh\u1eefng khuy\u1ebft \u0111i\u1ec3m nh\u1ecf, nh\u01b0 v\u1ebft x\u01b0\u1edbc nh\u1ecf hay m\u1ed9t s\u1ed1 l\u1ed7i h\u00e0n \u2013 v\u1ed1n ch\u1ec9 mang t\u00ednh th\u1ea9m m\u1ef9 \u0111\u1ed1i v\u1edbi Lo\u1ea1i 2 \u2013 l\u1ea1i \u0111\u01b0\u1ee3c coi l\u00e0 khuy\u1ebft t\u1eadt \u0111\u1ed1i v\u1edbi Lo\u1ea1i 3. Trong l\u0129nh v\u1ef1c PCBA c\u00f4ng nghi\u1ec7p, ch\u00fang t\u00f4i th\u01b0\u1eddng n\u00f3i r\u1eb1ng \u0111i\u1ec1u duy nh\u1ea5t ng\u0103n c\u00e1ch gi\u1eefa tr\u1eadt t\u1ef1 v\u00e0 h\u1ed7n lo\u1ea1n ch\u00ednh l\u00e0 s\u1ef1 ho\u00e0n h\u1ea3o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu trong c\u00e1c m\u00f4i tr\u01b0\u1eddng v\u1eadn h\u00e0nh kh\u1eafc nghi\u1ec7t<\/h3>\n\n\n\n<p>\u0110i\u1ec7n t\u1eed ti\u00eau d\u00f9ng, bao g\u1ed3m c\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m mang l\u1ea1i s\u1ef1 ti\u1ec7n l\u1ee3i, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea5t trong t\u00fai ho\u1eb7c \u0111\u1eb7t tr\u00ean b\u00e0n trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng an to\u00e0n v\u00e0 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9. Ng\u01b0\u1ee3c l\u1ea1i, \u0111i\u1ec7n t\u1eed c\u00f4ng nghi\u1ec7p l\u1ea1i ho\u1ea1t \u0111\u1ed9ng trong nh\u1eefng \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t. M\u1ed9t bo m\u1ea1ch in c\u00f4ng nghi\u1ec7p (PCBA) ph\u1ea3i ch\u1ecbu \u0111\u1ef1ng \u0111\u01b0\u1ee3c:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Nhi\u1ec7t \u0111\u1ed9 c\u1ef1c \u0111oan:<\/strong> V\u00e0o m\u00f9a \u0111\u00f4ng, nhi\u1ec7t \u0111\u1ed9 trong m\u1ed9t nh\u00e0 kho kh\u00f4ng c\u00f3 h\u1ec7 th\u1ed1ng s\u01b0\u1edfi c\u00f3 th\u1ec3 xu\u1ed1ng t\u1edbi -40 \u0111\u1ed9 C, v\u00e0 b\u00ean c\u1ea1nh \u0111\u00f3 c\u00f2n ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi l\u00f2 s\u01b0\u1edfi \u2013 nhi\u1ec7t \u0111\u1ed9 \u1edf \u0111\u00f3 c\u00f3 th\u1ec3 v\u01b0\u1ee3t qu\u00e1 85 \u0111\u1ed9 C.<\/li>\n\n\n\n<li><strong>Rung \u0111\u1ed9ng v\u00e0 va \u0111\u1eadp:<\/strong> C\u00e1c m\u1ed1i h\u00e0n y\u1ebfu c\u00f3 th\u1ec3 b\u1ecb m\u1ecfi, trong khi c\u00e1c t\u1ee5 \u0111i\u1ec7n ti\u00eau chu\u1ea9n c\u00f3 th\u1ec3 b\u1ecb n\u1ee9t. C\u00e1c \u0111\u1ed9ng c\u01a1 v\u00e0 m\u00e1y \u00e9p n\u1eb7ng li\u00ean t\u1ee5c b\u1ecb rung l\u1eafc.<\/li>\n\n\n\n<li><strong>\u00d4 nhi\u1ec5m:<\/strong> \u0110\u1ed9 \u1ea9m trong kh\u00f4ng kh\u00ed, b\u1ee5i d\u1eabn \u0111i\u1ec7n, s\u01b0\u01a1ng d\u1ea7u v\u00e0 c\u00e1c \u0111\u00e1m m\u00e2y h\u01a1i \u0103n m\u00f2n.<\/li>\n<\/ul>\n\n\n\n<p>Nh\u01b0ng c\u00f3 l\u1ebd c\u00f2n c\u00f3 m\u1ed9t \u0111\u1ed1i th\u1ee7 l\u1edbn h\u01a1n, \u0111\u00f3 ch\u00ednh l\u00e0 th\u1eddi gian. Trong khi c\u00e1c s\u1ea3n ph\u1ea9m ti\u00eau d\u00f9ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho chu k\u1ef3 thay th\u1ebf nhanh ch\u00f3ng t\u1eeb 2 \u0111\u1ebfn 3 n\u0103m, th\u00ec thi\u1ebft b\u1ecb c\u00f4ng nghi\u1ec7p l\u1ea1i l\u00e0 m\u1ed9t kho\u1ea3n chi ti\u00eau v\u1ed1n, \u0111\u01b0\u1ee3c k\u1ef3 v\u1ecdng s\u1ebd ho\u1ea1t \u0111\u1ed9ng \u2013 th\u01b0\u1eddng l\u00e0 theo chu k\u1ef3 24\/7 \u2013 trong v\u00f2ng 10 \u0111\u1ebfn 20 n\u0103m. M\u00f4-\u0111un b\u1ea3ng m\u1ea1ch in m\u00e0 b\u1ea1n thi\u1ebft k\u1ebf ng\u00e0y h\u00f4m nay, \u0111\u1ebfn khi th\u1ebf h\u1ec7 k\u1ef9 s\u01b0 ti\u1ebfp theo b\u01b0\u1edbc v\u00e0o l\u0129nh v\u1ef1c n\u00e0y, v\u1eabn ph\u1ea3i ti\u1ebfp t\u1ee5c ho\u1ea1t \u0111\u1ed9ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c b\u01b0\u1edbc l\u1eafp r\u00e1p ch\u00ednh \u0111\u1ed1i v\u1edbi thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed c\u00f4ng nghi\u1ec7p ch\u1ecbu va \u0111\u1eadp<\/h2>\n\n\n\n<p>Vi\u1ec7c ch\u1ebf t\u1ea1o m\u1ed9t b\u1ea3ng m\u1ea1ch d\u00e0nh cho m\u1ee5c \u0111\u00edch c\u00f4ng nghi\u1ec7p \u0111\u00f2i h\u1ecfi s\u1ef1 k\u1ebft h\u1ee3p c\u1ea9n th\u1eadn gi\u1eefa h\u00f3a h\u1ecdc, v\u1eadt l\u00fd v\u00e0 c\u01a1 h\u1ecdc. M\u1eb7c d\u00f9 quy tr\u00ecnh t\u1ed5ng th\u1ec3 t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00e1c h\u00ecnh th\u1ee9c s\u1ea3n xu\u1ea5t b\u1ea3ng m\u1ea1ch kh\u00e1c, nh\u01b0ng trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t c\u00f4ng nghi\u1ec7p, c\u1ea7n ph\u1ea3i \u00e1p d\u1ee5ng th\u00eam c\u00e1c l\u1edbp b\u1ea3o v\u1ec7 v\u00e0 ki\u1ec3m \u0111\u1ecbnh.<\/p>\n\n\n\n<p>Quy tr\u00ecnh l\u00e0m vi\u1ec7c ti\u00eau bi\u1ec3u \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o vi\u1ec7c l\u1eafp r\u00e1p bo m\u1ea1ch \u0111\u1ea1t \u0111\u1ed9 tin c\u1eady cao nh\u1ea5t di\u1ec5n ra nh\u01b0 sau:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>B\u01b0\u1edbc<\/td><td>Ch\u1ee9c n\u0103ng<\/td><td>T\u00ednh quan tr\u1ecdng trong c\u00f4ng nghi\u1ec7p<\/td><\/tr><tr><td>1. In b\u1ed9t h\u00e0n<\/td><td>B\u00f4i keo h\u00e0n l\u00ean b\u1ec1 m\u1eb7t b\u1ea3ng m\u1ea1ch in (PCB).<\/td><td>C\u00e1c khu\u00f4n in ch\u00ednh x\u00e1c gi\u00fap ki\u1ec3m so\u00e1t \u0111i\u1ec7n dung nh\u1eb1m ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng ng\u1eafn m\u1ea1ch \u1edf c\u00e1c khu v\u1ef1c cao \u00e1p.<\/td><\/tr><tr><td>2. SPI (Ki\u1ec3m tra b\u1ed9t h\u00e0n)<\/td><td>Ki\u1ec3m tra 3D c\u00e1c l\u1edbp b\u1ed9t nh\u00e3o.<\/td><td>Ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 kh\u1ed1i l\u01b0\u1ee3ng tr\u01b0\u1edbc khi l\u1eafp \u0111\u1eb7t linh ki\u1ec7n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t 100%.<\/td><\/tr><tr><td>3. Ch\u1ecdn v\u00e0 \u0111\u1eb7t<\/td><td>Vi\u1ec7c l\u1eafp \u0111\u1eb7t c\u00e1c linh ki\u1ec7n g\u1eafn b\u1ec1 m\u1eb7t b\u1eb1ng robot t\u1ed1c \u0111\u1ed9 cao.<\/td><td>Vi\u1ec7c l\u1eafp \u0111\u1eb7t d\u01b0\u1edbi \u00e1p su\u1ea5t cao \u0111\u1ea3m b\u1ea3o c\u00e1c b\u1ed9 ph\u1eadn \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh ch\u1eafc ch\u1eafn trong qu\u00e1 tr\u00ecnh di chuy\u1ec3n \u1edf t\u1ed1c \u0111\u1ed9 cao.<\/td><\/tr><tr><td>4. H\u00e0n n\u00f3ng ch\u1ea3y<\/td><td>L\u00e0m n\u00f3ng b\u1ea3ng m\u1ea1ch trong l\u00f2 nung n\u00f3ng l\u1ea1i \u0111\u1ec3 l\u00e0m tan ch\u1ea3y ch\u1ea5t h\u00e0n.<\/td><td>C\u00e1c c\u1ea5u h\u00ecnh nhi\u1ec7t \u0111\u01b0\u1ee3c t\u00f9y ch\u1ec9nh gi\u00fap ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng s\u1ed1c nhi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c m\u1ea1ch t\u00edch h\u1ee3p (IC) c\u00f4ng nghi\u1ec7p nh\u1ea1y c\u1ea3m.<\/td><\/tr><tr><td>5. AOI (Ki\u1ec3m tra quang h\u1ecdc t\u1ef1 \u0111\u1ed9ng)<\/td><td>C\u00e1c camera ki\u1ec3m tra hi\u1ec7n t\u01b0\u1ee3ng l\u1ec7ch, hi\u1ec7n t\u01b0\u1ee3ng \u201ctombstoning\u201d v\u00e0 c\u1ef1c t\u00ednh.<\/td><td>Ki\u1ec3m tra vi\u1ec7c tu\u00e2n th\u1ee7 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng m\u1ed1i h\u00e0n lo\u1ea1i 3.<\/td><\/tr><tr><td>6. THT (C\u00f4ng ngh\u1ec7 l\u1ed7 xuy\u00ean)<\/td><td>L\u1eafp r\u00e1p c\u00e1c chi ti\u1ebft c\u00f3 d\u00e2y d\u1eabn b\u1eb1ng tay ho\u1eb7c b\u1eb1ng robot.<\/td><td>Kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ed1i v\u1edbi c\u00e1c \u0111\u1ea7u n\u1ed1i v\u00e0 r\u01a1le ch\u1ecbu t\u1ea3i n\u1eb7ng.<\/td><\/tr><tr><td>7. H\u00e0n s\u00f3ng<\/td><td>H\u00e0n c\u00e1c linh ki\u1ec7n THT b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p h\u00e0n s\u00f3ng v\u1edbi ch\u1ea5t h\u00e0n n\u00f3ng ch\u1ea3y.<\/td><td>C\u00e1c th\u00f4ng s\u1ed1 \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 \u0111\u1ea1t m\u1ee9c n\u1ea1p th\u00f9ng 75%+.<\/td><\/tr><tr><td>8. Ki\u1ec3m th\u1eed ICT \/ FCT<\/td><td>Ki\u1ec3m tra \u0111i\u1ec7n v\u00e0 ki\u1ec3m tra ch\u1ee9c n\u0103ng.<\/td><td>M\u00f4 ph\u1ecfng c\u00e1c t\u1ea3i tr\u1ecdng c\u00f4ng nghi\u1ec7p \u0111\u1ec3 ki\u1ec3m tra kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i c\u1ee7a bo m\u1ea1ch.<\/td><\/tr><tr><td>10. L\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7 \/ \u0110\u1ed5 keo<\/td><td>\u00c1p d\u1ee5ng c\u00e1c l\u1edbp b\u1ea3o v\u1ec7.<\/td><td>L\u1edbp b\u1ea3o v\u1ec7 cu\u1ed1i c\u00f9ng tr\u01b0\u1edbc m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">K\u1ebft h\u1ee3p SMT v\u00e0 THT \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 c\u01a1 h\u1ecdc<\/h3>\n\n\n\n<p>Trong cu\u1ed9c \u0111ua thu nh\u1ecf k\u00edch th\u01b0\u1edbc, ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng \u0111\u00e3 g\u1ea7n nh\u01b0 ho\u00e0n to\u00e0n b\u1ecf qua c\u00f4ng ngh\u1ec7 l\u1eafp gh\u00e9p xuy\u00ean l\u1ed7 (THT) \u0111\u1ec3 chuy\u1ec3n sang c\u00f4ng ngh\u1ec7 l\u1eafp gh\u00e9p b\u1ec1 m\u1eb7t (SMT), b\u1edfi c\u00f4ng ngh\u1ec7 n\u00e0y nhanh h\u01a1n, r\u1ebb h\u01a1n v\u00e0 gi\u00fap s\u1ea3n ph\u1ea9m c\u00f3 k\u00edch th\u01b0\u1edbc t\u1ed5ng th\u1ec3 nh\u1ecf g\u1ecdn h\u01a1n.<\/p>\n\n\n\n<p>\u0110i\u1ec1u n\u00e0y kh\u00f4ng \u0111\u00fang v\u1edbi l\u0129nh v\u1ef1c PCBA c\u00f4ng nghi\u1ec7p, n\u01a1i c\u00f4ng ngh\u1ec7 THT v\u1eabn s\u1ebd ti\u1ebfp t\u1ee5c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. \u0110i\u1ec1u n\u00e0y l\u00e0 do, ph\u1ea7n l\u1edbn c\u00e1c linh ki\u1ec7n c\u00f4ng ngh\u1ec7 g\u1eafn b\u1ec1 m\u1eb7t (SMT) d\u1ef1a v\u00e0o l\u1edbp h\u00e0n tr\u00ean b\u1ec1 m\u1eb7t bo m\u1ea1ch \u0111\u1ec3 c\u1ed1 \u0111\u1ecbnh c\u01a1 h\u1ecdc. Ngh\u0129a l\u00e0, n\u1ebfu k\u1ef9 thu\u1eadt vi\u00ean ph\u1ea3i c\u1eafm v\u00e0 r\u00fat m\u1ed9t \u0111\u1ea7u n\u1ed1i I\/O n\u1eb7ng th\u01b0\u1eddng xuy\u00ean, ho\u1eb7c n\u1ebfu c\u00f3 m\u1ed9t r\u01a1le ngu\u1ed3n ch\u1eafc ch\u1eafn tr\u00ean bo m\u1ea1ch, l\u1ef1c c\u1eaft s\u1ebd k\u00e9o mi\u1ebfng \u0111\u1ec7m n\u1ec1n SMT ra kh\u1ecfi bo m\u1ea1ch.<\/p>\n\n\n\n<p>C\u00e1c bo m\u1ea1ch c\u00f4ng nghi\u1ec7p \u00e1p d\u1ee5ng \u2018c\u1ea5u tr\u00fac h\u1ed7n h\u1ee3p\u2019, trong \u0111\u00f3 ch\u00fang t\u00f4i s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 SMT cho \u2018b\u1ed9 n\u00e3o\u2019 (vi \u0111i\u1ec1u khi\u1ec3n, \u0111i\u1ec7n tr\u1edf) nh\u01b0ng s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 THT cho \u201cc\u01a1 b\u1eafp\u201d (\u0111\u1ea7u n\u1ed1i, r\u01a1-le, t\u1ee5 \u0111i\u1ec7n), n\u01a1i c\u00e1c ch\u00e2n c\u1ee7a linh ki\u1ec7n THT xuy\u00ean qua bo m\u1ea1ch, nh\u1edd \u0111\u00f3 t\u1ef1 c\u1ed1 \u0111\u1ecbnh m\u1ed9t c\u00e1ch c\u01a1 h\u1ecdc. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ea5u tr\u00fac c\u1ea7n thi\u1ebft \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c c\u00e1c t\u00e1c \u0111\u1ed9ng v\u1eadt l\u00fd, chu k\u1ef3 nhi\u1ec7t v\u1edbi d\u00f2ng \u0111i\u1ec7n cao v\u00e0 c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng gi\u00e3n n\u1edf nhi\u1ec7t kh\u00e1c.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c quy tr\u00ecnh ph\u1ee7 b\u1ea3o v\u1ec7 v\u00e0 \u0111\u00fac k\u00edn<\/h3>\n\n\n\n<p>Sau khi c\u00e1c linh ki\u1ec7n \u0111\u00e3 \u0111\u01b0\u1ee3c h\u00e0n v\u00e0 c\u1eb7n ch\u1ea5t tr\u1ee3 h\u00e0n \u0111\u00e3 \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch, c\u00f4ng vi\u1ec7c v\u1eabn ch\u01b0a ho\u00e0n t\u1ea5t. B\u1ea3ng m\u1ea1ch v\u1eabn c\u00f2n tr\u1ea7n tr\u1ee5i, ph\u01a1i b\u00e0y tr\u01b0\u1edbc c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng. \u0110\u00e2y ch\u00ednh l\u00e0 l\u00fac l\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7 (Conformal Coating) v\u00e0 l\u1edbp \u0111\u00fac b\u1ea3o v\u1ec7 (Potting) ph\u00e1t huy t\u00e1c d\u1ee5ng \u2014 l\u1edbp gi\u00e1p b\u1ea3o v\u1ec7 cho PCBA c\u00f4ng nghi\u1ec7p.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img alt=\"\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.omch.com\/wp-content\/uploads\/2025\/12\/PCBA-potting.webp\" class=\"wp-image-9383\" style=\"object-fit:cover;width:512px;height:384px\" srcset=\"https:\/\/www.omch.com\/wp-content\/uploads\/2025\/12\/PCBA-potting.webp 1024w, https:\/\/www.omch.com\/wp-content\/uploads\/2025\/12\/PCBA-potting-300x225.webp 300w, https:\/\/www.omch.com\/wp-content\/uploads\/2025\/12\/PCBA-potting-768x576.webp 768w, https:\/\/www.omch.com\/wp-content\/uploads\/2025\/12\/PCBA-potting-16x12.webp 16w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>L\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7:<\/strong> \u0110\u00e2y l\u00e0 quy tr\u00ecnh trong \u0111\u00f3 m\u1ed9t l\u1edbp m\u00e0ng polymer b\u1ea3o v\u1ec7 m\u1ecfng l\u00e0m t\u1eeb acrylic, silicone ho\u1eb7c polyurethane \u0111\u01b0\u1ee3c phun l\u00ean to\u00e0n b\u1ed9 b\u1ea3ng m\u1ea1ch in (PCBA). L\u1edbp ph\u1ee7 n\u00e0y s\u1ebd \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t l\u1edbp \u201cda gi\u1ea3\u201d v\u00e0 gi\u00fap ng\u0103n ch\u1eb7n c\u00e1c m\u1ea1ch \u0111i\u1ec7n kh\u1ecfi b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi n\u01b0\u1edbc, bao g\u1ed3m h\u01a1i \u1ea9m, b\u1ee5i, s\u01b0\u01a1ng mu\u1ed1i, h\u01a1i h\u00f3a ch\u1ea5t ho\u1eb7c c\u00e1c lo\u1ea1i kh\u00f3i kh\u00e1c. N\u1ebfu kh\u00f4ng c\u00f3 l\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7 (Conformal Coating), b\u1ea3ng m\u1ea1ch kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 s\u1ebd \u0111\u1eb7c bi\u1ec7t d\u1ec5 b\u1ecb ng\u01b0ng t\u1ee5, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng n\u1ed1i t\u1eaft gi\u1eefa nhi\u1ec1u ch\u00e2n c\u1eafm v\u00e0 l\u00e0m ch\u1eadp to\u00e0n b\u1ed9 b\u1ea3ng m\u1ea1ch.<\/li>\n\n\n\n<li><strong>\u0110\u00f3ng g\u00f3i (B\u1ecdc k\u00edn):<\/strong> \u0110\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, to\u00e0n b\u1ed9 b\u1ea3ng m\u1ea1ch in (PCBA) \u0111\u01b0\u1ee3c \u0111\u1eb7t v\u00e0o m\u1ed9t v\u1ecf b\u1ecdc \u0111\u00fac v\u00e0 \u0111\u1ed5 \u0111\u1ea7y v\u00e0o \u0111\u00f3 m\u1ed9t h\u1ee3p ch\u1ea5t polymer l\u1ecfng nh\u01b0 epoxy ho\u1eb7c silicone, sau \u0111\u00f3 h\u1ee3p ch\u1ea5t n\u00e0y s\u1ebd \u0111\u00f4ng c\u1ee9ng. \u0110i\u1ec1u n\u00e0y gi\u00fap thi\u1ebft b\u1ecb c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng rung v\u00e0 ch\u1ed1ng th\u1ea5m n\u01b0\u1edbc, \u0111\u1ed3ng th\u1eddi kh\u00f4ng th\u1ec3 b\u1ea3o tr\u00ec \u0111\u01b0\u1ee3c n\u1eefa.<\/li>\n<\/ul>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi m\u1ed9t bo m\u1ea1ch in c\u00f4ng nghi\u1ec7p (PCBA), \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 nh\u1eefng \u201ct\u00f9y ch\u1ecdn n\u00e2ng c\u1ea5p\u201d. Ch\u00fang l\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 t\u1ed3n t\u1ea1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>T\u1ea1i sao c\u00e1c linh ki\u1ec7n l\u1ea1i quan tr\u1ecdng \u0111\u1ebfn v\u1eady \u0111\u1ed1i v\u1edbi PCBA<\/strong><\/h2>\n\n\n\n<p>Ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng lu\u00f4n ph\u1ee5 thu\u1ed9c v\u00e0o ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a nguy\u00ean li\u1ec7u ban \u0111\u1ea7u, b\u1ea5t ch\u1ea5p c\u00e1c quy tr\u00ecnh ki\u1ec3m tra nghi\u00eam ng\u1eb7t v\u00e0 c\u00e1c b\u01b0\u1edbc l\u1eafp r\u00e1p \u0111\u00fang quy tr\u00ecnh nh\u01b0 \u0111\u00e3 n\u00eau \u1edf tr\u00ean. M\u1ed9t m\u1ed1i h\u00e0n c\u00f3 th\u1ec3 ho\u00e0n h\u1ea3o v\u00e0 l\u1edbp ph\u1ee7 c\u00f3 th\u1ec3 li\u1ec1n m\u1ea1ch, nh\u01b0ng t\u1ea5t c\u1ea3 s\u1ebd tr\u1edf n\u00ean v\u00f4 ngh\u0129a n\u1ebfu c\u00f3 m\u1ed9t t\u1ee5 \u0111i\u1ec7n b\u1ecb h\u1ecfng qu\u00e1 s\u1edbm khi ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec7t, ho\u1eb7c n\u1ebfu m\u1ed9t r\u01a1le b\u1ecb k\u1eb9t \u1edf tr\u1ea1ng th\u00e1i \u0111\u00f3ng khi \u0111i\u1ec7n \u00e1p t\u0103ng qu\u00e1 cao. Trong ng\u00e0nh c\u00f4ng nghi\u1ec7p n\u00e0y, v\u00e0 theo quy lu\u1eadt chung, c\u00e1c linh ki\u1ec7n kh\u00f4ng th\u1ec3 ch\u1ec9 l\u00e0 nh\u1eefng b\u1ed9 ph\u1eadn thay th\u1ebf t\u1ea1m th\u1eddi g\u00e2y phi\u1ec1n to\u00e1i. Ch\u00fang l\u00e0 nh\u1eefng kh\u1ed1i x\u00e2y d\u1ef1ng c\u01a1 b\u1ea3n ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng t\u1ef1 m\u00ecnh ch\u1ecbu \u0111\u1ef1ng \u0111\u01b0\u1ee3c th\u1ef1c t\u1ebf kh\u1eafc nghi\u1ec7t c\u1ee7a m\u00f4i tr\u01b0\u1eddng.<\/p>\n\n\n\n<p>Do \u0111\u00f3, ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a PCBA ph\u1ee5 thu\u1ed9c ho\u00e0n to\u00e0n v\u00e0o ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a c\u00e1c linh ki\u1ec7n. Ch\u1ec9 c\u1ea7n m\u1ed9t linh ki\u1ec7n k\u00e9m ch\u1ea5t l\u01b0\u1ee3ng c\u0169ng \u0111\u1ee7 khi\u1ebfn m\u1ed9t b\u1ed9 \u0111i\u1ec1u khi\u1ec3n ph\u1ee9c t\u1ea1p v\u00e0 ho\u00e0n ch\u1ec9nh b\u1ecb h\u1ecfng v\u00e0 tr\u1edf n\u00ean v\u00f4 d\u1ee5ng. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 gi\u00fap ti\u1ebft ki\u1ec7m m\u1ed9t kho\u1ea3n nh\u1ecf v\u1ec1 m\u1eb7t ph\u1ea7n c\u1ee9ng, nh\u01b0ng cu\u1ed1i c\u00f9ng s\u1ebd g\u00e2y ra nh\u1eefng t\u1ed5n th\u1ea5t kh\u1ed5ng l\u1ed3 do th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng c\u0169ng nh\u01b0 l\u00e0m t\u0103ng chi ph\u00ed v\u1eadn h\u00e0nh v\u00e0 b\u1ea3o tr\u00ec. \u0110\u00e2y ch\u00ednh l\u00e0 l\u00fd do t\u1ea1i sao ch\u00fang t\u00f4i kh\u00f4ng ch\u1ec9 t\u1eadp trung n\u1ed7 l\u1ef1c k\u1ef9 thu\u1eadt v\u00e0o vi\u1ec7c \u0111\u01a1n thu\u1ea7n \u201cl\u1eafp r\u00e1p\u201d m\u1ed9t b\u1ea3ng m\u1ea1ch, m\u00e0 thay v\u00e0o \u0111\u00f3, ch\u00fang t\u00f4i t\u1eadp trung v\u00e0o vi\u1ec7c \u201cch\u1ecdn l\u1ecdc\u201d c\u00e1c th\u00e0nh ph\u1ea7n c\u1ea5u th\u00e0nh c\u1ee7a n\u00f3, v\u00ec vi\u1ec7c l\u1ef1a ch\u1ecdn ch\u00ednh l\u00e0 h\u00e0ng ph\u00f2ng th\u1ee7 \u0111\u1ea7u ti\u00ean v\u00e0 s\u1ebd quy\u1ebft \u0111\u1ecbnh th\u00e0nh c\u00f4ng hay th\u1ea5t b\u1ea1i cu\u1ed1i c\u00f9ng c\u1ee7a b\u1ea3ng m\u1ea1ch.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1ch l\u1ef1a ch\u1ecdn c\u00e1c linh ki\u1ec7n \u0111\u00e1ng tin c\u1eady cho b\u1ea3ng m\u1ea1ch in c\u00f4ng nghi\u1ec7p (PCBA)<\/h2>\n\n\n\n<p>M\u1ed9t PCBA l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng v\u00e0, th\u1eadt kh\u00f4ng may, \u0111\u1ed9 b\u1ec1n c\u1ee7a n\u00f3 ch\u1ec9 b\u1eb1ng v\u1edbi m\u1eaft x\u00edch y\u1ebfu nh\u1ea5t trong h\u1ec7 th\u1ed1ng \u0111\u00f3. D\u00f9 b\u1ea1n h\u00e0n c\u00e1c m\u1ed1i n\u1ed1i t\u1ed1t \u0111\u1ebfn \u0111\u00e2u, hay ph\u1ee7 l\u1edbp b\u1ea3o v\u1ec7 (conformal coating) k\u1ef9 l\u01b0\u1ee1ng \u0111\u1ebfn \u0111\u00e2u \u0111i ch\u0103ng n\u1eefa; to\u00e0n b\u1ed9 b\u1ea3ng m\u1ea1ch v\u1eabn c\u00f3 th\u1ec3 h\u1ecfng n\u1ebfu ch\u1ec9 m\u1ed9t t\u1ee5 \u0111i\u1ec7n ph\u00e2n b\u1ecb kh\u00f4 qu\u00e1 s\u1edbm, ho\u1eb7c n\u1ebfu ti\u1ebfp \u0111i\u1ec3m r\u01a1-le b\u1ecb h\u00e0n d\u00ednh l\u1ea1i khi ch\u1ecbu t\u1ea3i. Vi\u1ec7c l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p cho l\u1eafp r\u00e1p b\u1ea3ng m\u1ea1ch in c\u00f4ng nghi\u1ec7p \u0111\u00f2i h\u1ecfi m\u1ed9t t\u01b0 duy c\u1ee5 th\u1ec3: b\u1ea1n kh\u00f4ng ch\u1ecdn linh ki\u1ec7n d\u1ef1a tr\u00ean gi\u00e1 c\u1ea3; b\u1ea1n ch\u1ecdn linh ki\u1ec7n d\u1ef1a tr\u00ean kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng b\u1ec1n b\u1ec9. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 Danh s\u00e1ch Ki\u1ec3m tra C\u00e1c Linh ki\u1ec7n C\u00f4ng nghi\u1ec7p C\u1ed1t l\u00f5i:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Lo\u1ea1i th\u00e0nh ph\u1ea7n<\/td><td>Vai tr\u00f2 trong PCBA<\/td><td>Y\u00eau c\u1ea7u trong l\u0129nh v\u1ef1c c\u00f4ng nghi\u1ec7p<\/td><\/tr><tr><td>B\u1ed9 ngu\u1ed3n<\/td><td>Chuy\u1ec3n \u0111\u1ed5i \u0111i\u1ec7n \u00e1p<\/td><td>Hi\u1ec7u su\u1ea5t cao, b\u1ea3o v\u1ec7 qu\u00e1 \u00e1p.<\/td><\/tr><tr><td>R\u01a1le<\/td><td>T\u1ea3i chuy\u1ec3n m\u1ea1ch<\/td><td>V\u1ecf k\u00edn, \u0111\u1ed9 b\u1ec1n ti\u1ebfp x\u00fac cao.<\/td><\/tr><tr><td>Kh\u1ed1i \u0111\u1ea7u cu\u1ed1i<\/td><td>K\u1ebft n\u1ed1i I\/O<\/td><td>Ch\u1ecbu m\u00f4-men xo\u1eafn cao, ch\u1ea5t li\u1ec7u kh\u00f4ng ch\u00e1y.<\/td><\/tr><tr><td>T\u1ee5 \u0111i\u1ec7n<\/td><td>L\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng<\/td><td>Nhi\u1ec7t \u0111\u1ed9 cao (105\u00b0C tr\u1edf l\u00ean), kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c trong th\u1eddi gian d\u00e0i.<\/td><\/tr><tr><td>B\u1ed9 vi \u0111i\u1ec1u khi\u1ec3n<\/td><td>X\u1eed l\u00fd<\/td><td>D\u1ea3i nhi\u1ec7t \u0111\u1ed9 r\u1ed9ng, kh\u1ea3 n\u0103ng cung \u1ee9ng l\u00e2u d\u00e0i.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o tu\u1ed5i th\u1ecd c\u1ee7a thi\u1ebft b\u1ecb c\u00f4ng nghi\u1ec7p, m\u1ed7i b\u1ed9 ph\u1eadn trong Danh m\u1ee5c v\u1eadt li\u1ec7u (BOM) c\u1ee7a qu\u00fd v\u1ecb c\u0169ng c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 d\u1ef1a tr\u00ean ba ch\u1ec9 s\u1ed1 quan tr\u1ecdng sau:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Chi\u1ec1u 1: Kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i m\u00f4i tr\u01b0\u1eddng<\/h3>\n\n\n\n<p>M\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p l\u00e0 m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t. C\u00e1c linh ki\u1ec7n \u0111\u01b0\u1ee3c x\u1ebfp v\u00e0o lo\u1ea1i \u201cCommercial Grade\u201d (lo\u1ea1i th\u01b0\u01a1ng m\u1ea1i) v\u00e0 c\u00f3 d\u1ea3i nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng t\u1eeb 0\u00b0C \u0111\u1ebfn 70\u00b0C v\u1ed1n ch\u1ec9 d\u00e0nh cho c\u00e1c thi\u1ebft b\u1ecb v\u0103n ph\u00f2ng. Trong m\u1ed9t tr\u1ea1m b\u01a1m kh\u00f4ng c\u00f3 h\u1ec7 th\u1ed1ng s\u01b0\u1edfi ho\u1eb7c m\u1ed9t t\u1ee7 \u0111i\u1ec1u khi\u1ec3n \u0111\u1eb7t ngay c\u1ea1nh l\u00f2 nung, linh ki\u1ec7n s\u1ebd ph\u1ea3i ch\u1ecbu c\u00e1c \u1ee9ng su\u1ea5t nhi\u1ec7t, d\u1eabn \u0111\u1ebfn c\u00e1c h\u00ecnh th\u1ee9c h\u1ecfng h\u00f3c kh\u00e1c nhau.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Nhi\u1ec7t \u0111\u1ed9:<\/strong> B\u1ea1n n\u00ean quy \u0111\u1ecbnh ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p (-40\u00b0C \u0111\u1ebfn +85\u00b0C) l\u00e0 m\u1ee9c t\u1ed1i thi\u1ec3u tuy\u1ec7t \u0111\u1ed1i. C\u00e1c linh ki\u1ec7n th\u1ee5 \u0111\u1ed9ng quan tr\u1ecdng nh\u01b0 t\u1ee5 \u0111i\u1ec7n n\u00ean c\u00f3 m\u1ee9c ch\u1ecbu nhi\u1ec7t 105\u00b0C ho\u1eb7c th\u1eadm ch\u00ed 125\u00b0C.<\/li>\n\n\n\n<li><strong>T\u00ednh to\u00e0n v\u1eb9n v\u1ec1 m\u1eb7t v\u1eadt l\u00fd:<\/strong> M\u1ed9t lo\u1ea1t c\u00e1c b\u1ed9 ph\u1eadn nh\u01b0 kh\u1ed1i \u0111\u1ea7u cu\u1ed1i v\u00e0 \u0111\u1ea7u n\u1ed1i \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o t\u1eeb c\u00e1c v\u1eadt li\u1ec7u l\u00e0m v\u1ecf. M\u1ed9t s\u1ed1 lo\u1ea1i nh\u1ef1a c\u00f3 th\u1ec3 tr\u1edf n\u00ean gi\u00f2n v\u00e0 b\u1ecb bi\u1ebfn d\u1ea1ng do \u0111i\u1ec1u ki\u1ec7n \u0111\u00f3ng b\u0103ng ho\u1eb7c nhi\u1ec7t \u0111\u1ed9 cao. C\u00e1c linh ki\u1ec7n c\u00f4ng nghi\u1ec7p n\u1eb7ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf t\u1eeb polyamide hi\u1ec7u su\u1ea5t cao \u0111\u1ec3 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ea5u tr\u00fac v\u00e0 \u0111\u1ea3m b\u1ea3o d\u00e2y d\u1eabn v\u1eabn \u0111\u01b0\u1ee3c k\u1eb9p ch\u1eb7t ngay c\u1ea3 khi ch\u1ecbu rung \u0111\u1ed9ng c\u1ef1c m\u1ea1nh t\u1eeb m\u00f4i tr\u01b0\u1eddng.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u1ec9 s\u1ed1 2: Gi\u1ea3m c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c \u0111i\u1ec7n<\/h3>\n\n\n\n<p>Trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt c\u00f4ng nghi\u1ec7p, vi\u1ec7c v\u1eadn h\u00e0nh m\u1ed9t linh ki\u1ec7n \u1edf c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c t\u1ed1i \u0111a (\u201credlining\u201d) ch\u1eafc ch\u1eafn s\u1ebd d\u1eabn \u0111\u1ebfn th\u1ea3m h\u1ecda. \u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 tin c\u1eady cao nh\u1ea5t, c\u1ea7n ph\u1ea3i \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u201cgi\u1ea3m c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c \u0111i\u1ec7n\u201d (Electrical Derating), t\u1ee9c l\u00e0 vi\u1ec7c ch\u1ee7 \u0111\u1ed9ng l\u1ef1a ch\u1ecdn c\u00e1c linh ki\u1ec7n c\u00f3 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u01b0\u1ee3t xa so v\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh d\u1ef1 ki\u1ebfn.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Quy t\u1eafc 50%:<\/strong> V\u00ed d\u1ee5, n\u1ebfu b\u1ea1n c\u00f3 m\u1ed9t m\u1ea1ch \u0111i\u1ec7n 24V, b\u1ea1n kh\u00f4ng n\u00ean s\u1eed d\u1ee5ng t\u1ee5 \u0111i\u1ec7n 25V. Thay v\u00e0o \u0111\u00f3, n\u00ean s\u1eed d\u1ee5ng t\u1ee5 \u0111i\u1ec7n 50V. N\u1ebfu b\u1ea1n c\u00f3 m\u1ed9t r\u01a1le c\u1ea7n \u0111i\u1ec1u khi\u1ec3n d\u00f2ng \u0111i\u1ec7n 5 Amps, n\u00ean ch\u1ecdn r\u01a1le c\u00f3 \u0111\u1ecbnh m\u1ee9c 10 Amps.<\/li>\n\n\n\n<li><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y l\u1ea1i quan tr\u1ecdng:<\/strong> C\u00e1c m\u1ea1ng l\u01b0\u1edbi \u0111i\u1ec7n c\u00f4ng nghi\u1ec7p \u0111\u01b0\u1ee3c coi l\u00e0 \u201cb\u1ea9n\u201d, t\u1ee9c l\u00e0 ch\u00fang th\u01b0\u1eddng xuy\u00ean ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi c\u00e1c \u0111\u1ee3t t\u0103ng \u00e1p \u0111\u1ed9t ng\u1ed9t v\u00e0 c\u00e1c xung c\u1ea3m \u1ee9ng do c\u00e1c \u0111\u1ed9ng c\u01a1 c\u00f4ng su\u1ea5t l\u1edbn g\u00e2y ra. Vi\u1ec7c gi\u1ea3m \u0111\u1ecbnh m\u1ee9c (Derating) \u0111\u1ea3m b\u1ea3o m\u1ed9t bi\u00ean \u0111\u1ed9 an to\u00e0n quan tr\u1ecdng. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0, khi c\u00e1c \u0111\u1ee3t t\u0103ng \u00e1p n\u00e0y x\u1ea3y ra, linh ki\u1ec7n v\u1eabn c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u1ef1ng \u0111\u01b0\u1ee3c m\u1ee9c \u1ee9ng su\u1ea5t \u0111\u00f3 m\u00e0 kh\u00f4ng d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng ph\u00e1 v\u1ee1 \u0111i\u1ec7n m\u00f4i nghi\u00eam tr\u1ecdng hay qu\u00e1 t\u1ea3i nhi\u1ec7t.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Kh\u00eda c\u1ea1nh 3: Qu\u1ea3n l\u00fd v\u00f2ng \u0111\u1eddi v\u00e0 t\u00ednh s\u1eb5n s\u00e0ng<\/h3>\n\n\n\n<p>Trong khi th\u1ecb tr\u01b0\u1eddng \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng thay \u0111\u1ed5i theo chu k\u1ef3 18 th\u00e1ng, th\u1ecb tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p l\u1ea1i thay \u0111\u1ed5i theo t\u1eebng th\u1eadp k\u1ef7. Vi\u1ec7c thi\u1ebft k\u1ebf bo m\u1ea1ch d\u1ef1a tr\u00ean nh\u1eefng con chip m\u1edbi nh\u1ea5t v\u00e0 ti\u00ean ti\u1ebfn nh\u1ea5t h\u1ea7u nh\u01b0 lu\u00f4n l\u00e0 m\u1ed9t \u00fd t\u01b0\u1edfng t\u1ed3i, b\u1edfi v\u00ec nh\u00e0 s\u1ea3n xu\u1ea5t th\u01b0\u1eddng s\u1ebd ng\u1eebng s\u1ea3n xu\u1ea5t nh\u1eefng con chip \u0111\u00f3 (End of Life \u2013 EOL) ch\u1ec9 sau 2 n\u0103m.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Chi ph\u00ed c\u1ee7a s\u1ef1 l\u1ed7i th\u1eddi:<\/strong> N\u1ebfu m\u1ed9t linh ki\u1ec7n quan tr\u1ecdng tr\u1edf n\u00ean l\u1ed7i th\u1eddi, b\u1ea1n s\u1ebd ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi c\u01a1n \u00e1c m\u1ed9ng t\u1ed1n k\u00e9m l\u00e0 ph\u1ea3i thi\u1ebft k\u1ebf l\u1ea1i bo m\u1ea1ch in (PCBA), vi\u1ebft l\u1ea1i c\u00e1c tr\u00ecnh \u0111i\u1ec1u khi\u1ec3n ph\u1ea7n m\u1ec1m v\u00e0 ti\u1ebfn h\u00e0nh ch\u1ee9ng nh\u1eadn l\u1ea1i to\u00e0n b\u1ed9 m\u00e1y.<\/li>\n\n\n\n<li><strong>Chi\u1ebfn l\u01b0\u1ee3c:<\/strong> H\u00e3y t\u1eadp trung v\u00e0o c\u00e1c linh ki\u1ec7n c\u00f3 L\u1ed9 tr\u00ecnh Cung \u1ee9ng D\u00e0i h\u1ea1n \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1. C\u00e1c nh\u00e0 cung c\u1ea5p c\u00f4ng nghi\u1ec7p \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh s\u1ebd s\u1ea3n xu\u1ea5t m\u1ed9t s\u1ed1 d\u00f2ng s\u1ea3n ph\u1ea9m trong v\u00f2ng 10 \u0111\u1ebfn 15 n\u0103m, \u0111\u1ea3m b\u1ea3o r\u1eb1ng qu\u00fd v\u1ecb s\u1ebd c\u00f3 th\u1ec3 b\u1ea3o tr\u00ec thi\u1ebft b\u1ecb v\u00e0 s\u1ea3n xu\u1ea5t ph\u1ee5 t\u00f9ng thay th\u1ebf trong nhi\u1ec1u n\u0103m t\u1edbi.<\/li>\n<\/ul>\n\n\n\n<p>\u0110\u00e2y ch\u00ednh l\u00e0 l\u00fac chu\u1ed7i cung \u1ee9ng tr\u1edf th\u00e0nh \u0111\u1ed1i t\u00e1c chi\u1ebfn l\u01b0\u1ee3c c\u1ee7a b\u1ea1n. Vi\u1ec7c t\u00ecm ki\u1ebfm c\u00e1c linh ki\u1ec7n \u0111\u00e1p \u1ee9ng nh\u1eefng ti\u00eau chu\u1ea9n kh\u1eaft khe n\u00e0y \u2014 \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn, ki\u1ec3m \u0111\u1ecbnh v\u00e0 s\u1eb5n c\u00f3 \u2014 c\u00f3 th\u1ec3 tr\u1edf th\u00e0nh m\u1ed9t c\u01a1n \u00e1c m\u1ed9ng v\u1ec1 m\u1eb7t h\u1eadu c\u1ea7n \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t PCBA.<\/p>\n\n\n\n<p><strong>\u0110\u00f3 ch\u00ednh l\u00e0 l\u00fd do t\u1ea1i sao c\u00e1c doanh nghi\u1ec7p h\u00e0ng \u0111\u1ea7u trong ng\u00e0nh l\u1ea1i l\u1ef1a ch\u1ecdn OMCH.<\/strong><\/p>\n\n\n\n<p>V\u1edbi <strong>38 n\u0103m kinh nghi\u1ec7m trong l\u0129nh v\u1ef1c s\u1ea3n xu\u1ea5t<\/strong>, OMCH cung c\u1ea5p nh\u1eefng y\u1ebfu t\u1ed1 n\u1ec1n t\u1ea3ng \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady. D\u00f9 b\u1ea1n c\u1ea7n m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1nh m\u1ebd <strong>B\u1ed9 ngu\u1ed3n chuy\u1ec3n m\u1ea1ch<\/strong> v\u1edbi kh\u1ea3 n\u0103ng ch\u1ecbu qu\u00e1 t\u1ea3i cao,<strong> R\u01a1le<\/strong> \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m qua h\u00e0ng tri\u1ec7u chu k\u1ef3, ho\u1eb7c c\u00f3 \u0111\u1ed9 b\u1ec1n cao <strong>Tr\u1ea1m<\/strong><strong> Kh\u1ed1i<\/strong> V\u1edbi kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c m\u00f4-men xo\u1eafn l\u1edbn, c\u00e1c s\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf chuy\u00ean bi\u1ec7t cho m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t. Ch\u00fang t\u00f4i kh\u00f4ng ch\u1ec9 b\u00e1n linh ki\u1ec7n; ch\u00fang t\u00f4i c\u00f2n mang \u0111\u1ebfn s\u1ef1 an t\u00e2m nh\u1edd ti\u00eau chu\u1ea9n ch\u1ea5t l\u01b0\u1ee3ng ISO 9001 v\u00e0 ch\u1ee9ng nh\u1eadn CE\/RoHS. Khi qu\u00fd kh\u00e1ch s\u1eed d\u1ee5ng c\u00e1c linh ki\u1ec7n c\u1ee7a OMCH trong danh m\u1ee5c v\u1eadt li\u1ec7u (BOM), qu\u00fd kh\u00e1ch \u0111ang k\u1ebf th\u1eeba truy\u1ec1n th\u1ed1ng v\u1ec1 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a ch\u00fang t\u00f4i v\u00e0 \u0111\u1ea3m b\u1ea3o v\u00f2ng \u0111\u1eddi c\u1ee7a b\u1ea3ng m\u1ea1ch th\u00e0nh ph\u1ea9m.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Thi\u1ebft k\u1ebf \u0111\u1ec3 s\u1ea3n xu\u1ea5t (DFM) trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p<\/h2>\n\n\n\n<p>\u0110\u1ed9 tin c\u1eady kh\u00f4ng ph\u1ea3i l\u00e0 y\u1ebfu t\u1ed1 \u0111\u01b0\u1ee3c b\u1ed5 sung sau n\u00e0y, m\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n trong b\u1ea3n v\u1ebd m\u1ea1ch in (PCB). DFM t\u1eadp trung v\u00e0o vi\u1ec7c l\u1ed3ng gh\u00e9p c\u00e1c y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt s\u1ea3n xu\u1ea5t v\u00e0o thi\u1ebft k\u1ebf; trong l\u0129nh v\u1ef1c c\u00f4ng nghi\u1ec7p, \u0111i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi nh\u1eefng c\u00e2n nh\u1eafc thi\u1ebft k\u1ebf c\u1ee5 th\u1ec3 li\u00ean quan \u0111\u1ebfn c\u00f4ng su\u1ea5t cao v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n an to\u00e0n.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img alt=\"\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.omch.com\/wp-content\/uploads\/2025\/12\/DFM.webp\" class=\"wp-image-9380\" style=\"object-fit:cover;width:512px;height:384px\" srcset=\"https:\/\/www.omch.com\/wp-content\/uploads\/2025\/12\/DFM.webp 1024w, https:\/\/www.omch.com\/wp-content\/uploads\/2025\/12\/DFM-300x225.webp 300w, https:\/\/www.omch.com\/wp-content\/uploads\/2025\/12\/DFM-768x576.webp 768w, https:\/\/www.omch.com\/wp-content\/uploads\/2025\/12\/DFM-16x12.webp 16w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Y\u1ebfu t\u1ed1 \u0111\u1ea7u ti\u00ean li\u00ean quan \u0111\u1ebfn vi\u1ec7c qu\u1ea3n l\u00fd nhi\u1ec7t th\u00f4ng qua vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u1ed3ng d\u00e0y. C\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p c\u00f3 c\u00e1c t\u1ea3i c\u00f4ng su\u1ea5t cao nh\u01b0 \u0111\u1ed9ng c\u01a1 servo v\u00e0 b\u1ed9 gia nhi\u1ec7t, t\u1eeb \u0111\u00f3 sinh ra nhi\u1ec7t d\u1ecdc theo c\u00e1c \u0111\u01b0\u1eddng m\u1ea1ch tr\u00ean b\u1ea3ng m\u1ea1ch in (PCB). M\u1ed9t ti\u00eau chu\u1ea9n <strong>t<\/strong>L\u1edbp \u0111\u1ed3ng m\u1ecfng (1oz) th\u01b0\u1eddng kh\u00f4ng \u0111\u1ee7, d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng t\u1eafc ngh\u1ebdn d\u00f2ng \u0111i\u1ec7n v\u00e0 c\u00e1c \u0111i\u1ec3m n\u00f3ng, c\u00f3 th\u1ec3 g\u00e2y bong tr\u00f3c l\u1edbp m\u1ea1ch. Trong thi\u1ebft k\u1ebf c\u00f4ng nghi\u1ec7p, ng\u01b0\u1eddi ta th\u01b0\u1eddng s\u1eed d\u1ee5ng l\u1edbp \u0111\u1ed3ng c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng ho\u00e0n thi\u1ec7n l\u00e0 2oz v\u00e0 3oz. M\u1ee5c \u0111\u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng l\u1edbp \u0111\u1ed3ng d\u00e0y h\u01a1n l\u00e0 \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t b\u1ed9 t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3 cao, gi\u00fap ph\u00e2n t\u00e1n n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t qua c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac d\u1eabn \u0111i\u1ec7n v\u00e0 c\u00e1c l\u1edbp b\u00ean trong, t\u1eeb \u0111\u00f3 cho ph\u00e9p d\u00f2ng \u0111i\u1ec7n m\u1ea1nh l\u01b0u th\u00f4ng m\u00e0 kh\u00f4ng g\u00e2y qu\u00e1 nhi\u1ec7t.<\/p>\n\n\n\n<p>Y\u1ebfu t\u1ed1 th\u1ee9 hai li\u00ean quan \u0111\u1ebfn t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u v\u00e0 Kho\u1ea3ng c\u00e1ch an to\u00e0n (Kho\u1ea3ng c\u00e1ch d\u1ecdc v\u00e0 Kho\u1ea3ng c\u00e1ch ngang), b\u1edfi v\u00ec m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p th\u01b0\u1eddng c\u00f3 nhi\u1ec5u \u0111i\u1ec7n. Ngo\u00e0i ra, trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p, \u0111i\u1ec7n \u00e1p cao (380V, 480V) v\u00e0 m\u1ea1ch logic nh\u1ea1y c\u1ea3m 5V th\u01b0\u1eddng c\u00f9ng t\u1ed3n t\u1ea1i tr\u00ean c\u00f9ng m\u1ed9t b\u1ea3ng m\u1ea1ch. \u201cKho\u1ea3ng c\u00e1ch ngang\u201d l\u00e0 kho\u1ea3ng c\u00e1ch ng\u1eafn nh\u1ea5t gi\u1eefa c\u00e1c d\u00e2y d\u1eabn trong kh\u00f4ng kh\u00ed, trong khi \u201cKho\u1ea3ng c\u00e1ch d\u1ecdc\u201d l\u00e0 kho\u1ea3ng c\u00e1ch d\u1ecdc theo b\u1ec1 m\u1eb7t. N\u1ebfu hai kho\u1ea3ng c\u00e1ch n\u00e0y qu\u00e1 g\u1ea7n nhau, s\u1ef1 tr\u00f9ng h\u1ee3p gi\u1eefa m\u1ed9t \u0111\u1ee3t t\u0103ng \u00e1p \u0111\u1ed9t ng\u1ed9t v\u00e0 m\u1ed9t l\u1edbp b\u1ee5i nh\u00e0 m\u00e1y d\u1eabn \u0111i\u1ec7n c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng tia l\u1eeda \u0111i\u1ec7n, d\u1eabn \u0111\u1ebfn h\u1ec7 th\u1ed1ng b\u1ecb h\u1ee7y ho\u1ea1i. DFM c\u00f4ng nghi\u1ec7p ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n an to\u00e0n nh\u01b0 v\u1eady (UL 60950 ho\u1eb7c IEC 62368) m\u1edbi \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn, \u0111i\u1ec1u n\u00e0y th\u01b0\u1eddng c\u00f3 ngh\u0129a l\u00e0 ph\u1ea3i th\u00eam c\u00e1c khe an to\u00e0n \u0111\u01b0\u1ee3c t\u1ea1o th\u1ee7 c\u00f4ng v\u00e0o thi\u1ebft k\u1ebf PCB \u0111\u1ec3 t\u0103ng hi\u1ec7u qu\u1ea3 kho\u1ea3ng c\u00e1ch r\u00f2 r\u1ec9 \u2014 m\u1ed9t bi\u1ec7n ph\u00e1p an to\u00e0n kh\u00f4ng ph\u1ed5 bi\u1ebfn \u0111\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c quy tr\u00ecnh ki\u1ec3m th\u1eed n\u00e2ng cao nh\u1eb1m \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady cho c\u00e1c h\u1ec7 th\u1ed1ng quan tr\u1ecdng \u0111\u1ed1i v\u1edbi nhi\u1ec7m v\u1ee5<\/h2>\n\n\n\n<p>T\u1ea1i m\u1ecdi trung t\u00e2m ho\u1ea1t \u0111\u1ed9ng, ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng l\u00e0 m\u1ed9t c\u00f4ng \u0111o\u1ea1n thi\u1ebft y\u1ebfu v\u00e0 kh\u00f4ng ch\u1ec9 gi\u1edbi h\u1ea1n \u1edf vi\u1ec7c ki\u1ec3m tra. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady cho c\u00e1c nhi\u1ec7m v\u1ee5 quan tr\u1ecdng, quy tr\u00ecnh s\u1ea3n xu\u1ea5t PCBA t\u1ed1t nh\u1ea5t ph\u1ea3i \u0111i k\u00e8m v\u1edbi c\u00e1c quy tr\u00ecnh ki\u1ec3m tra to\u00e0n di\u1ec7n, bao g\u1ed3m v\u00f4 s\u1ed1 l\u1ea7n ki\u1ec3m tra, nh\u1eb1m \u0111\u1ea3m b\u1ea3o c\u00e1c bo m\u1ea1ch kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o s\u1eed d\u1ee5ng n\u1ebfu ch\u01b0a tr\u1ea3i qua c\u00e1c b\u01b0\u1edbc ki\u1ec3m tra b\u1ed5 sung.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ki\u1ec3m tra trong m\u1ea1ch (ICT):<\/strong> \u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh c\u1ee7a quy tr\u00ecnh n\u00e0y l\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng m\u1ed9t thi\u1ebft b\u1ecb c\u1ed1 \u0111\u1ecbnh d\u1ea1ng \u201cgi\u01b0\u1eddng \u0111inh\u201d \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 k\u1ebft n\u1ed1i v\u1edbi c\u00e1c \u0111i\u1ec3m ki\u1ec3m tra \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc tr\u00ean c\u1ee5m linh ki\u1ec7n c\u1ea7n ki\u1ec3m tra. Thi\u1ebft b\u1ecb n\u00e0y c\u00e1ch ly v\u1ec1 m\u1eb7t ch\u1ee9c n\u0103ng v\u00e0 ki\u1ec3m tra t\u1eebng linh ki\u1ec7n ri\u00eang l\u1ebb nh\u1eb1m \u0111\u1ea3m b\u1ea3o s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng ch\u1eadp m\u1ea1ch, \u0111\u1ee9t m\u1ea1ch, c\u0169ng nh\u01b0 c\u00e1c m\u1ee9c \u0111i\u1ec7n dung v\u00e0 \u0111i\u1ec7n tr\u1edf ph\u00f9 h\u1ee3p, t\u1eeb \u0111\u00f3 \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 m\u1ea1ch tr\u00ean b\u1ea3ng m\u1ea1ch ph\u1ea3n \u00e1nh ch\u00ednh x\u00e1c thi\u1ebft k\u1ebf d\u1ef1 ki\u1ebfn.<\/li>\n\n\n\n<li><strong>Ki\u1ec3m tra m\u1ea1ch ch\u1ee9c n\u0103ng (FCT):<\/strong> V\u01b0\u1ee3t ra ngo\u00e0i c\u00e1c b\u01b0\u1edbc ki\u1ec3m tra t\u0129nh \u0111\u01a1n thu\u1ea7n, qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m bao g\u1ed3m vi\u1ec7c c\u1ea5p ngu\u1ed3n cho bo m\u1ea1ch v\u00e0 t\u1ea1o ra m\u1ed9t m\u00f4 ph\u1ecfng m\u00f4i tr\u01b0\u1eddng th\u1ef1c t\u1ebf m\u00e0 bo m\u1ea1ch \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng. C\u00e1c t\u00edn hi\u1ec7u \u0111\u1ea7u v\u00e0o \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o v\u00e0 c\u00e1c t\u1ea3i \u0111\u1ea7u ra \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng bo m\u1ea1ch in (PCBA) \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang c\u00e1ch trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh cho \u1ee9ng d\u1ee5ng \u0111\u00f3.<\/li>\n\n\n\n<li><strong>Th\u1eed nghi\u1ec7m ch\u1ea1y th\u1eed:<\/strong> \u0110\u00e2y l\u00e0 b\u00e0i ki\u1ec3m tra quy\u1ebft \u0111\u1ecbnh nh\u1ea5t v\u1ec1 \u0111\u1ed9 b\u1ec1n c\u00f4ng nghi\u1ec7p. Quy tr\u00ecnh n\u00e0y bao g\u1ed3m vi\u1ec7c \u0111\u1eb7t c\u00e1c bo m\u1ea1ch c\u00f3 ngu\u1ed3n \u0111i\u1ec7n v\u00e0o bu\u1ed3ng nhi\u1ec7t (th\u01b0\u1eddng \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb 40\u00b0C \u0111\u1ebfn 60\u00b0C) trong v\u00f2ng 24 \u0111\u1ebfn 48 gi\u1edd. Quy tr\u00ecnh n\u00e0y bu\u1ed9c c\u00e1c s\u1ef1 c\u1ed1 thu\u1ed9c lo\u1ea1i \u201ct\u1ef7 l\u1ec7 h\u1ecfng h\u00f3c ban \u0111\u1ea7u\u201d \u2013 nh\u1eefng s\u1ef1 c\u1ed1 v\u1ed1n s\u1ebd x\u1ea3y ra trong th\u00e1ng \u0111\u1ea7u ti\u00ean sau khi \u0111\u01b0a v\u00e0o s\u1eed d\u1ee5ng \u2013 ph\u1ea3i x\u1ea3y ra ngay t\u1ea1i nh\u00e0 m\u00e1y, t\u1eeb \u0111\u00f3 gi\u00fap lo\u1ea1i b\u1ecf c\u00e1c s\u1ef1 c\u1ed1 s\u1edbm c\u00f3 th\u1ec3 x\u1ea3y ra trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh th\u1ef1c t\u1ebf.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">L\u1ef1a ch\u1ecdn nh\u00e0 s\u1ea3n xu\u1ea5t PCBA ph\u00f9 h\u1ee3p cho t\u1ef1 \u0111\u1ed9ng h\u00f3a<\/h2>\n\n\n\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u1ed1i t\u00e1c ph\u00f9 h\u1ee3p l\u00e0 b\u01b0\u1edbc cu\u1ed1i c\u00f9ng trong h\u00e0nh tr\u00ecnh s\u1ea3n xu\u1ea5t c\u00e1c s\u1ea3n ph\u1ea9m c\u00f4ng nghi\u1ec7p \u0111\u00e1ng tin c\u1eady. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 t\u00ecm ki\u1ebfm \u0111\u1ed1i t\u00e1c c\u00f3 m\u1ee9c gi\u00e1 r\u1ebb nh\u1ea5t, m\u00e0 c\u00f2n l\u00e0 vi\u1ec7c t\u00ecm ki\u1ebfm \u0111\u1ed1i t\u00e1c s\u1eb5n s\u00e0ng b\u1ea3o \u0111\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m c\u1ee7a b\u1ea1n. Khi \u0111\u00e1nh gi\u00e1 c\u00e1c nh\u00e0 cung c\u1ea5p PCBA, h\u00e3y tham kh\u1ea3o Danh s\u00e1ch ki\u1ec3m tra n\u0103ng l\u1ef1c c\u00f4ng nghi\u1ec7p sau \u0111\u00e2y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ch\u1ee9ng nh\u1eadn:<\/strong> H\u1ecd c\u00f3 gi\u1eef kh\u00f4ng? <strong>ISO 9001<\/strong>? \u0110\u1ed1i v\u1edbi ng\u00e0nh \u00f4 t\u00f4 ho\u1eb7c c\u00e1c l\u0129nh v\u1ef1c y\u00eau c\u1ea7u \u0111\u1ed9 tin c\u1eady c\u1ef1c cao, li\u1ec7u h\u1ecd c\u00f3 <strong>IATF 16949<\/strong>?<\/li>\n\n\n\n<li><strong>C\u01a1 s\u1edf th\u1eed nghi\u1ec7m:<\/strong> Li\u1ec7u h\u1ecd c\u00f3 <strong>Ph\u00f2ng l\u00e3o h\u00f3a \/ Bu\u1ed3ng ch\u1ea1y th\u1eed<\/strong>kh\u00f4ng? H\u00e3y y\u00eau c\u1ea7u \u0111\u01b0\u1ee3c xem. N\u1ebfu h\u1ecd kh\u00f4ng c\u00f3, h\u00e3y t\u1eeb ch\u1ed1i h\u1ee3p t\u00e1c.<\/li>\n\n\n\n<li><strong>T\u00ednh to\u00e0n v\u1eb9n trong vi\u1ec7c t\u00ecm ngu\u1ed3n cung \u1ee9ng:<\/strong> H\u1ecd c\u00f3 h\u1ec7 th\u1ed1ng nghi\u00eam ng\u1eb7t \u0111\u1ec3 ng\u0103n ch\u1eb7n linh ki\u1ec7n gi\u1ea3 m\u1ea1o kh\u00f4ng?<\/li>\n\n\n\n<li><strong>Ph\u00e2n t\u00edch r\u1ee7i ro BOM:<\/strong> H\u1ecd c\u00f3 cung c\u1ea5p d\u1ecbch v\u1ee5 r\u00e0 so\u00e1t BOM c\u1ee7a b\u1ea1n v\u00e0 \u0111\u00e1nh d\u1ea5u c\u00e1c linh ki\u1ec7n s\u1eafp h\u1ebft h\u1ea1n s\u1eed d\u1ee5ng kh\u00f4ng?<\/li>\n<\/ul>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c nh\u00e0 cung c\u1ea5p v\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t PCBA, vi\u1ec7c t\u00ecm ngu\u1ed3n cung \u1ee9ng c\u00e1c linh ki\u1ec7n c\u1ea5p c\u00f4ng nghi\u1ec7p v\u1eeba \u0111\u00e1ng tin c\u1eady v\u1eeba hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c kh\u00f3 c\u00e2n b\u1eb1ng. Lu\u00f4n t\u1ed3n t\u1ea1i th\u00e1ch th\u1ee9c trong vi\u1ec7c t\u00ecm ki\u1ebfm c\u00e1c linh ki\u1ec7n ch\u00ednh x\u00e1c \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u kh\u1eaft khe m\u00e0 kh\u00f4ng l\u00e0m chi ph\u00ed danh m\u1ee5c v\u1eadt li\u1ec7u (BOM) t\u0103ng v\u1ecdt.<\/p>\n\n\n\n<p>OMCH mang \u0111\u1ebfn gi\u1ea3i ph\u00e1p ho\u00e0n h\u1ea3o. Ch\u00fang t\u00f4i cung c\u1ea5p c\u00e1c linh ki\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng cao tu\u00e2n th\u1ee7 nghi\u00eam ng\u1eb7t c\u00e1c ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p kh\u1eaft khe \u0111\u1ed3ng th\u1eddi duy tr\u00ec m\u1ee9c gi\u00e1 c\u1ea1nh tranh. V\u1edbi d\u1ecbch v\u1ee5 mua s\u1eafm tr\u1ecdn g\u00f3i, ch\u00fang t\u00f4i \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c qu\u1ea3n l\u00fd chu\u1ed7i cung \u1ee9ng c\u1ee7a b\u1ea1n, gi\u00fap b\u1ea1n g\u1ed9p c\u00e1c \u0111\u01a1n h\u00e0ng v\u00e0 t\u1eadp trung v\u00e0o vi\u1ec7c l\u1eafp r\u00e1p ch\u00ednh x\u00e1c thay v\u00ec ph\u1ea3i loay hoay v\u1edbi quy tr\u00ecnh t\u00ecm ngu\u1ed3n cung \u1ee9ng ph\u1ee9c t\u1ea1p.<\/p>\n\n\n\n<p><strong>B\u1ea1n \u0111\u00e3 s\u1eb5n s\u00e0ng t\u1ed1i \u01b0u h\u00f3a quy tr\u00ecnh s\u1ea3n xu\u1ea5t v\u1edbi c\u00e1c linh ki\u1ec7n c\u00f4ng nghi\u1ec7p \u0111\u00e1ng tin c\u1eady v\u00e0 gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng ch\u01b0a? <a href=\"https:\/\/www.omch.com\/vi\/contact\/\">H\u00e3y li\u00ean h\u1ec7 v\u1edbi OMCH<\/a> ngay h\u00f4m nay \u0111\u1ec3 th\u1ea3o lu\u1eadn v\u1ec1 nhu c\u1ea7u d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n.<\/strong><\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Khi n\u00f3i \u0111\u1ebfn t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p, M\u1ea1ch in l\u1eafp r\u00e1p (PCBA) ch\u00ednh l\u00e0 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n trung t\u00e2m c\u1ee7a m\u00e1y m\u00f3c v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng quan tr\u1ecdng. Tuy nhi\u00ean, l\u0129nh v\u1ef1c c\u00f4ng nghi\u1ec7p l\u1ea1i kh\u00e1c bi\u1ec7t so v\u1edbi ng\u00e0nh \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng. Trong khi m\u00f4i tr\u01b0\u1eddng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t l\u00e0 ti\u00eau chu\u1ea9n trong ng\u00e0nh \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng, th\u00ec \u0111\u1ed1i v\u1edbi thi\u1ebft b\u1ecb v\u00e0 m\u00e1y m\u00f3c c\u00f4ng nghi\u1ec7p, ch\u00fang c\u1ea7n ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng trong \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t v\u00e0 [\u2026]<\/p>","protected":false},"author":4,"featured_media":9381,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Industrial Printed Circuit Board Assembly: The Reliability Guide","_seopress_titles_desc":"Master Industrial Printed Circuit Board Assembly (PCBA) with our ultimate reliability guide. Learn manufacturing steps and component sourcing.","_seopress_robots_index":"","footnotes":""},"categories":[46],"tags":[],"class_list":["post-9385","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industrial-control"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/9385","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/comments?post=9385"}],"version-history":[{"count":1,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/9385\/revisions"}],"predecessor-version":[{"id":9388,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/9385\/revisions\/9388"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/media\/9381"}],"wp:attachment":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/media?parent=9385"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/categories?post=9385"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/tags?post=9385"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}