{"id":2295,"date":"2024-08-12T12:41:52","date_gmt":"2024-08-12T12:41:52","guid":{"rendered":"https:\/\/tryvary.com\/?p=2295"},"modified":"2024-08-12T12:41:52","modified_gmt":"2024-08-12T12:41:52","slug":"causes-of-pcb-board-failure-analysis","status":"publish","type":"post","link":"https:\/\/tryvary.com\/vi\/phan-tich-nguyen-nhan-hong-hoc-cua-bang-mach-in\/","title":{"rendered":"Nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y ra l\u1ed7i b\u1ea3ng m\u1ea1ch in"},"content":{"rendered":"<p>S\u1ef1 c\u1ed1 h\u1ecfng h\u00f3c c\u1ee7a b\u1ea3ng m\u1ea1ch in (PCB) c\u00f3 th\u1ec3 do nhi\u1ec1u y\u1ebfu t\u1ed1, bao g\u1ed3m <strong>l\u1ed7 r\u1ed7ng m\u1ea1<\/strong>, kho\u1ea3ng c\u00e1ch \u0111\u1ed3ng kh\u00f4ng \u0111\u1ee7, m\u1ea3nh v\u1ee5n v\u00e0 <strong>v\u1ea5n \u0111\u1ec1 m\u1eb7t n\u1ea1 h\u00e0n<\/strong>. Quy tr\u00ecnh s\u1ea3n xu\u1ea5t k\u00e9m, l\u1ed7i thi\u1ebft k\u1ebf v\u00e0 <strong>nh\u00e2n t\u1ed1 m\u00f4i tr\u01b0\u1eddng<\/strong> ch\u1eb3ng h\u1ea1n nh\u01b0 nhi\u1ec7t, b\u1ee5i v\u00e0 \u0111\u1ed9 \u1ea9m c\u0169ng c\u00f3 th\u1ec3 g\u00f3p ph\u1ea7n g\u00e2y ra l\u1ed7i PCB. Ngo\u00e0i ra, b\u1eaby axit, v\u1ea5n \u0111\u1ec1 h\u00e0n v\u00e0 <strong>l\u1ed7i s\u1ea3n xu\u1ea5t<\/strong> c\u00f3 th\u1ec3 th\u1ecfa hi\u1ec7p <strong>\u0111\u1ed9 tin c\u1eady c\u1ee7a PCB<\/strong>. Hi\u1ec3u \u0111\u01b0\u1ee3c nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 c\u1ee7a l\u1ed7i PCB l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 thi\u1ebft k\u1ebf v\u00e0 s\u1ea3n xu\u1ea5t c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n t\u1eed \u0111\u00e1ng tin c\u1eady. B\u1eb1ng c\u00e1ch xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y, c\u00f3 th\u1ec3 th\u1ea5y r\u00f5 r\u1eb1ng m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn to\u00e0n di\u1ec7n \u0111\u1ed1i v\u1edbi thi\u1ebft k\u1ebf v\u00e0 s\u1ea3n xu\u1ea5t PCB l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 ng\u0103n ng\u1eeba l\u1ed7i v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t h\u00e0ng \u0111\u1ea7u.<\/p>\n<h2>B\u00e0i h\u1ecdc ch\u00ednh<\/h2>\n<ul>\n<li>C\u00e1c l\u1ed7 r\u1ed7ng m\u1ea1, quy tr\u00ecnh m\u1ea1 k\u00e9m v\u00e0 nhi\u1ec5m b\u1ea9n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn k\u1ebft n\u1ed1i kh\u00f4ng \u0111\u00e1ng tin c\u1eady v\u00e0 h\u1ecfng PCB.<\/li>\n<li>Kho\u1ea3ng c\u00e1ch \u0111\u1ed3ng kh\u00f4ng \u0111\u1ee7 v\u00e0 l\u1ed7i thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch v\u00e0 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua kh\u00f4ng mong mu\u1ed1n.<\/li>\n<li>C\u00e1c m\u1ea3nh v\u1ee5n, b\u1eaby axit v\u00e0 l\u1ed7i s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch, \u0103n m\u00f2n v\u00e0 h\u1ecfng thi\u1ebft b\u1ecb.<\/li>\n<li>C\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 h\u00e0n, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1ed1i h\u00e0n ngu\u1ed9i v\u00e0 m\u1eb7t n\u1ea1 h\u00e0n c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u1ebft n\u1ed1i v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a PCB.<\/li>\n<li>C\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng, bao g\u1ed3m nhi\u1ec7t, b\u1ee5i v\u00e0 \u0111\u1ed9 \u1ea9m, c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng v\u00e0 g\u00e2y ra l\u1ed7i PCB theo th\u1eddi gian.<\/li>\n<\/ul>\n<h2>M\u1ea1 l\u1ed7 r\u1ed7ng v\u00e0 k\u1ebft n\u1ed1i kh\u00f4ng \u0111\u00e1ng tin c\u1eady<\/h2>\n<div class=\"embed-youtube\" style=\"position: relative; width: 100%; height: 0; padding-bottom: 56.25%; margin-bottom:20px;\"><iframe style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\" src=\"https:\/\/www.youtube.com\/embed\/oyLUmM6rZCk\" title=\"Tr\u00ecnh ph\u00e1t video YouTube\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe><\/div>\n<p>C\u00e1c l\u1ed7 r\u1ed7ng m\u1ea1, bi\u1ec3u hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng c\u00e1c kho\u1ea3ng tr\u1ed1ng trong l\u1edbp m\u1ea1 \u0111\u1ed3ng tr\u00ean <strong>bo m\u1ea1ch in<\/strong>, l\u00e0 th\u1ee7 ph\u1ea1m ph\u1ed5 bi\u1ebfn \u0111\u1eb1ng sau <strong>k\u1ebft n\u1ed1i \u0111i\u1ec7n kh\u00f4ng \u0111\u00e1ng tin c\u1eady<\/strong> v\u00e0 c\u00e1c l\u1ed7i PCB ti\u1ebfp theo. C\u00e1c l\u1ed7 r\u1ed7ng n\u00e0y c\u00f3 th\u1ec3 x\u1ea3y ra do quy tr\u00ecnh m\u1ea1 k\u00e9m, \u0111\u1ed9 b\u00e1m d\u00ednh kh\u00f4ng \u0111\u1ee7 ho\u1eb7c nhi\u1ec5m b\u1ea9n trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t, d\u1eabn \u0111\u1ebfn t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a l\u1edbp m\u1ea1 \u0111\u1ed3ng b\u1ecb \u1ea3nh h\u01b0\u1edfng. Do \u0111\u00f3, c\u00e1c k\u1ebft n\u1ed1i \u0111i\u1ec7n tr\u1edf n\u00ean kh\u00f4ng \u0111\u00e1ng tin c\u1eady, g\u00e2y ra <strong>m\u1ea5t t\u00edn hi\u1ec7u<\/strong>, l\u1ed7i kh\u00f4ng li\u00ean t\u1ee5c v\u00e0 tr\u1ee5c tr\u1eb7c chung c\u1ee7a PCB.<\/p>\n<p>\u0110\u1ec3 x\u00e1c \u0111\u1ecbnh <strong>l\u1ed7 r\u1ed7ng m\u1ea1<\/strong>, c\u00e1c k\u1ef9 thu\u1eadt ch\u1ea9n \u0111o\u00e1n nh\u01b0 <strong>ph\u00e2n t\u00edch vi m\u00f4<\/strong> V\u00e0 <strong>Ki\u1ec3m tra b\u1eb1ng tia X<\/strong> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cho ph\u00e9p nh\u00e0 s\u1ea3n xu\u1ea5t ph\u00e1t hi\u1ec7n v\u00e0 x\u1eed l\u00fd c\u00e1c l\u1ed7 r\u1ed7ng m\u1ea1, \u0111\u1ea3m b\u1ea3o ch\u1ee9c n\u0103ng v\u00e0 \u0111\u1ed9 tin c\u1eady th\u00edch h\u1ee3p c\u1ee7a b\u1ea3ng m\u1ea1ch in.<\/p>\n<p>Trong s\u1ea3n xu\u1ea5t PCB, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i th\u1ef1c hi\u1ec7n <strong>bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng<\/strong> \u0111\u1ec3 ng\u0103n ng\u1eeba t\u00ecnh tr\u1ea1ng l\u1ed7 r\u1ed7ng m\u1ea1 x\u1ea3y ra ngay t\u1eeb \u0111\u1ea7u. B\u1eb1ng c\u00e1ch \u0111\u00f3, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro v\u1ec1 k\u1ebft n\u1ed1i kh\u00f4ng \u0111\u00e1ng tin c\u1eady v\u00e0 m\u1ea5t t\u00edn hi\u1ec7u, cu\u1ed1i c\u00f9ng l\u00e0 ng\u0103n ng\u1eeba h\u1ecfng PCB.<\/p>\n<h2>Kho\u1ea3ng c\u00e1ch \u0111\u1ed3ng v\u00e0 ng\u1eafn m\u1ea1ch<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/electrical_hazards_in_buildings.jpg\" alt=\"nguy c\u01a1 \u0111i\u1ec7n trong c\u00e1c t\u00f2a nh\u00e0\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Kh\u00f4ng \u0111\u1ee7 <strong>thanh l\u00fd \u0111\u1ed3ng<\/strong>, m\u1ed9t c\u00e2n nh\u1eafc thi\u1ebft k\u1ebf quan tr\u1ecdng trong <strong>s\u1ea3n xu\u1ea5t b\u1ea3ng m\u1ea1ch in<\/strong>, c\u00f3 th\u1ec3 g\u00e2y ra h\u1eadu qu\u1ea3 t\u00e0n kh\u1ed1c, bao g\u1ed3m <strong>ng\u1eafn m\u1ea1ch<\/strong> c\u00f3 th\u1ec3 khi\u1ebfn to\u00e0n b\u1ed9 b\u1ea3ng kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng. Kho\u1ea3ng c\u00e1ch \u0111\u1ed3ng \u0111\u1ec1 c\u1eadp \u0111\u1ebfn <strong>kho\u1ea3ng c\u00e1ch t\u1ed1i thi\u1ec3u<\/strong> gi\u1eefa c\u00e1c d\u1ea5u v\u1ebft \u0111\u1ed3ng ho\u1eb7c c\u00e1c th\u00e0nh ph\u1ea7n tr\u00ean PCB. Kho\u1ea3ng c\u00e1ch kh\u00f4ng \u0111\u1ee7 gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111o\u1ea3n m\u1ea1ch, d\u1eabn \u0111\u1ebfn <strong>d\u00f2ng \u0111i\u1ec7n kh\u00f4ng mong mu\u1ed1n<\/strong> v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y ra s\u1ef1 th\u1ea5t b\u1ea1i th\u1ea3m kh\u1ed1c.<\/p>\n<p>Th\u00edch h\u1ee3p <strong>thi\u1ebft k\u1ebf PCB<\/strong> v\u00e0 c\u00e2n nh\u1eafc v\u1ec1 c\u00e1ch b\u1ed1 tr\u00ed \u0111\u1ec3 gi\u1ea3i ph\u00f3ng \u0111\u1ed3ng l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 ng\u0103n ng\u1eeba \u0111o\u1ea3n m\u1ea1ch. Tri\u1ec3n khai <strong>nguy\u00ean l\u00fd thi\u1ebft k\u1ebf<\/strong> \u0111\u1ec3 gi\u1ea3i ph\u00f3ng \u0111\u1ed3ng c\u00f3 th\u1ec3 gi\u00fap tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch v\u00e0 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady c\u1ee7a b\u1ea3ng m\u1ea1ch in. \u0110o\u1ea3n m\u1ea1ch c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng c\u00e1c th\u00e0nh ph\u1ea7n, ph\u00e1 v\u1ee1 <strong>lu\u1ed3ng t\u00edn hi\u1ec7u<\/strong>v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0m cho PCB kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c.<\/p>\n<p>\u0110\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro n\u00e0y, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf ph\u1ea3i c\u00e2n nh\u1eafc c\u1ea9n th\u1eadn kho\u1ea3ng c\u00e1ch \u0111\u1ed3ng trong thi\u1ebft k\u1ebf c\u1ee7a h\u1ecd, \u0111\u1ea3m b\u1ea3o kho\u1ea3ng c\u00e1ch th\u00edch h\u1ee3p gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng \u0111\u1ed3ng v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n \u0111\u1ec3 ng\u0103n ch\u1eb7n d\u00f2ng \u0111i\u1ec7n kh\u00f4ng mong mu\u1ed1n. B\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 c\u00e1c quy t\u1eafc v\u00e0 h\u01b0\u1edbng d\u1eabn thi\u1ebft k\u1ebf \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf PCB c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro \u0111o\u1ea3n m\u1ea1ch v\u00e0 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady c\u1ee7a b\u1ea3ng m\u1ea1ch in c\u1ee7a h\u1ecd.<\/p>\n<h2>M\u1ea3nh v\u00e0 nhi\u1ec5u \u0111i\u1ec7n<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/metal_slivers_causing_interference.jpg\" alt=\"m\u1ea3nh kim lo\u1ea1i g\u00e2y nhi\u1ec5u\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Khi c\u00e1c b\u1ea3ng m\u1ea1ch in \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t, c\u00e1c m\u1ea3nh nh\u1ecf c\u1ee7a <strong>v\u1eadt li\u1ec7u d\u1eabn \u0111i\u1ec7n<\/strong>, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <strong>nh\u1eefng m\u1ea3nh v\u1ee5n<\/strong>, c\u00f3 th\u1ec3 v\u00f4 t\u00ecnh b\u1ecb b\u1ecf l\u1ea1i ph\u00eda sau, g\u00e2y ra m\u1ed1i \u0111e d\u1ecda \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady c\u1ee7a PCB. Nh\u1eefng m\u1ea3nh n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra <strong>ng\u1eafn m\u1ea1ch<\/strong> v\u00e0 ph\u00e1 v\u1ee1 <strong>T\u00edn hi\u1ec7u \u0111i\u1ec7n t\u1eed<\/strong>, d\u1eabn \u0111\u1ebfn <strong>h\u00e0nh vi th\u1ea5t th\u01b0\u1eddng<\/strong> trong c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed. S\u1ef1 nhi\u1ec5u \u0111i\u1ec7n do c\u00e1c m\u1ea3nh v\u1ee5n t\u1ea1o ra c\u00f3 th\u1ec3 g\u00e2y ra h\u1eadu qu\u1ea3 t\u00e0n kh\u1ed1c, bao g\u1ed3m c\u1ea3 vi\u1ec7c thi\u1ebft b\u1ecb b\u1ecb tr\u1ee5c tr\u1eb7c v\u00e0 h\u1ecfng h\u00f3c.<\/p>\n<p>M\u1ea3nh l\u00e0 s\u1ea3n ph\u1ea9m ph\u1ee5 ph\u1ed5 bi\u1ebfn c\u1ee7a qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t PCB v\u00e0 s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a ch\u00fang c\u00f3 th\u1ec3 l\u00e0 do kh\u00f4ng \u0111\u1ee7 <strong>quy tr\u00ecnh ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng<\/strong>. Trong su\u1ed1t <strong>Quy tr\u00ecnh s\u1ea3n xu\u1ea5t<\/strong>, nh\u1eefng m\u1ea3nh v\u1eadt li\u1ec7u d\u1eabn \u0111i\u1ec7n nh\u1ecf c\u00f3 th\u1ec3 v\u1ee1 ra v\u00e0 n\u1eb1m l\u1ea1i tr\u00ean b\u1ea3ng m\u1ea1ch, ch\u1edd \u0111\u1ee3i \u0111\u1ec3 g\u00e2y ra s\u1ef1 c\u1ed1.<\/p>\n<p>Vi\u1ec7c th\u1ef1c hi\u1ec7n c\u00e1c quy tr\u00ecnh ki\u1ec3m tra v\u00e0 th\u1eed nghi\u1ec7m nghi\u00eam ng\u1eb7t \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 lo\u1ea1i b\u1ecf c\u00e1c m\u1ea3nh tr\u00ean PCB l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft. B\u1eb1ng c\u00e1ch \u0111\u00f3, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 nguy c\u01a1 h\u1ecfng PCB v\u00e0 duy tr\u00ec \u0111\u1ed9 tin c\u1eady c\u1ee7a s\u1ea3n ph\u1ea9m. C\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng hi\u1ec7u qu\u1ea3 c\u00f3 th\u1ec3 gi\u00fap ph\u00e1t hi\u1ec7n v\u00e0 lo\u1ea1i b\u1ecf c\u00e1c m\u1ea3nh, gi\u1ea3m thi\u1ec3u kh\u1ea3 n\u0103ng nhi\u1ec5u \u0111i\u1ec7n v\u00e0 \u0111o\u1ea3n m\u1ea1ch.<\/p>\n<h2>Thi\u1ebfu m\u1eb7t n\u1ea1 h\u00e0n v\u00e0 h\u01b0 h\u1ecfng linh ki\u1ec7n<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/component_damage_and_mask.jpg\" alt=\"thi\u1ec7t h\u1ea1i th\u00e0nh ph\u1ea7n v\u00e0 m\u1eb7t n\u1ea1\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Th\u00f4ng th\u01b0\u1eddng, s\u1ef1 v\u1eafng m\u1eb7t c\u1ee7a m\u1ed9t <strong>m\u1eb7t n\u1ea1 H\u00e0n<\/strong> c\u00f3 th\u1ec3 c\u00f3 h\u1eadu qu\u1ea3 s\u00e2u r\u1ed9ng \u0111\u1ed1i v\u1edbi \u0111\u1ed9 tin c\u1eady v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a b\u1ea3ng m\u1ea1ch in, cu\u1ed1i c\u00f9ng d\u1eabn \u0111\u1ebfn <strong>th\u1ea5t b\u1ea1i s\u1edbm<\/strong>. M\u1ed9t m\u1eb7t n\u1ea1 h\u00e0n b\u1ecb m\u1ea5t s\u1ebd l\u00e0m l\u1ed9 ra c\u00e1c v\u1ebft \u0111\u1ed3ng c\u00f3 kh\u1ea3 n\u0103ng <strong>ng\u1eafn m\u1ea1ch<\/strong> v\u00e0 \u0103n m\u00f2n, l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn PCB <strong>tinh d\u00e2n \u0111i\u00ea\u0323n<\/strong>.<\/p>\n<p>Ngo\u00e0i ra, vi\u1ec7c thi\u1ebfu m\u1ed9t <strong>l\u1edbp b\u1ea3o v\u1ec7<\/strong> gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 m\u00f4i tr\u01b0\u1eddng l\u00e0m t\u0103ng nguy c\u01a1 <strong>h\u01b0 h\u1ecfng th\u00e0nh ph\u1ea7n<\/strong>. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 x\u1ea3y ra do ti\u1ebfp x\u00fac v\u1edbi <strong>y\u1ebfu t\u1ed1 g\u00e2y c\u0103ng th\u1eb3ng m\u00f4i tr\u01b0\u1eddng<\/strong>ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u1ed9 \u1ea9m, nhi\u1ec7t \u0111\u1ed9 v\u00e0 ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m.<\/p>\n<p>Vi\u1ec7c kh\u00f4ng c\u00f3 m\u1eb7t n\u1ea1 h\u00e0n c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn b\u1eaby axit, c\u00f3 th\u1ec3 g\u00e2y h\u01b0 h\u1ecfng l\u00e2u d\u00e0i cho PCB. H\u01a1n n\u1eefa, vi\u1ec7c kh\u00f4ng c\u00f3 m\u1eb7t n\u1ea1 h\u00e0n gi\u1eefa c\u00e1c mi\u1ebfng \u0111\u1ec7m c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn k\u1ebft n\u1ed1i h\u00e0n k\u00e9m, l\u00e0m gi\u1ea3m \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n t\u1ed5ng th\u1ec3 c\u1ee7a PCB.<\/p>\n<p>Vi\u1ec7c s\u1eed d\u1ee5ng m\u1eb7t n\u1ea1 h\u00e0n \u0111\u00fang c\u00e1ch l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 \u0111\u1ea3m b\u1ea3o tu\u1ed5i th\u1ecd c\u1ee7a PCB. N\u1ebfu b\u1ecf qua b\u01b0\u1edbc quan tr\u1ecdng n\u00e0y, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 nguy c\u01a1 l\u00e0m gi\u1ea3m \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a PCB, cu\u1ed1i c\u00f9ng d\u1eabn \u0111\u1ebfn h\u1ecfng h\u00f3c s\u1edbm.<\/p>\n<h2>B\u1eaby axit v\u00e0 r\u1ee7i ro \u0103n m\u00f2n<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/acid_traps_warning_signs.jpg\" alt=\"d\u1ea5u hi\u1ec7u c\u1ea3nh b\u00e1o b\u1eaby axit\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Ngo\u00e0i nh\u1eefng r\u1ee7i ro li\u00ean quan \u0111\u1ebfn vi\u1ec7c thi\u1ebfu m\u1eb7t n\u1ea1 h\u00e0n, m\u1ed9t nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn kh\u00e1c g\u00e2y ra l\u1ed7i b\u1ea3ng m\u1ea1ch in n\u1eb1m \u1edf s\u1ef1 h\u00ecnh th\u00e0nh <strong>b\u1eaby axit<\/strong>, c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0103n m\u00f2n v\u00e0 <strong>l\u00e0m gi\u1ea3m \u0111\u1ed9 tin c\u1eady<\/strong> c\u1ee7a <strong>c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed<\/strong>.<\/p>\n<p>B\u1eaby axit x\u1ea3y ra khi ch\u1ea5t kh\u1eafc v\u00f4 t\u00ecnh b\u1ecb m\u1eafc k\u1eb9t trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t PCB, t\u1ea1o ra c\u00e1c khu v\u1ef1c c\u00f3 th\u1ec3 x\u1ea3y ra \u0103n m\u00f2n theo th\u1eddi gian. N\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, c\u00e1c b\u1eaby axit n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111o\u1ea3n m\u1ea1ch v\u00e0 h\u1ecfng h\u00f3c trong c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed.<\/p>\n<p>C\u00e1c <strong>nguy c\u01a1 \u0103n m\u00f2n<\/strong> li\u00ean quan \u0111\u1ebfn b\u1eaby axit c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m ch\u1ee9c n\u0103ng v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed tr\u00ean PCB. \u0110\u1ec3 <strong>b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i nh\u1eefng r\u1ee7i ro n\u00e0y<\/strong>, quy tr\u00ecnh thi\u1ebft k\u1ebf v\u00e0 s\u1ea3n xu\u1ea5t PCB ph\u00f9 h\u1ee3p l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft.<\/p>\n<p>C\u00e1c nh\u00e0 thi\u1ebft k\u1ebf v\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t ph\u1ea3i th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc \u0111\u1ec3 ng\u0103n ng\u1eeba s\u1ef1 h\u00ecnh th\u00e0nh c\u1ee7a b\u1eaby axit v\u00e0 vi\u1ec7c ki\u1ec3m tra v\u00e0 b\u1ea3o tr\u00ec th\u01b0\u1eddng xuy\u00ean c\u00f3 th\u1ec3 gi\u00fap x\u00e1c \u0111\u1ecbnh v\u00e0 gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 n\u00e0y tr\u01b0\u1edbc khi ch\u00fang x\u1ea3y ra. <strong>L\u1ed7i PCB<\/strong>.<\/p>\n<h2>\u1ee8ng su\u1ea5t nhi\u1ec7t v\u00e0 tr\u1ee5c tr\u1eb7c PCB<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/thermal_stress_and_reliability.jpg\" alt=\"\u1ee9ng su\u1ea5t nhi\u1ec7t v\u00e0 \u0111\u1ed9 tin c\u1eady\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>\u1ee8ng su\u1ea5t nhi\u1ec7t l\u00e0 th\u1ee7 ph\u1ea1m ph\u1ed5 bi\u1ebfn g\u00e2y ra l\u1ed7i b\u1ea3ng m\u1ea1ch in (PCB). N\u00f3 c\u00f3 th\u1ec3 l\u00e0 do bi\u1ebfn \u0111\u1ed9ng nhi\u1ec7t \u0111\u1ed9 qu\u00e1 m\u1ee9c v\u00e0 kh\u00f4ng t\u1ed1i \u01b0u <strong>l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u<\/strong>. <strong>Nhi\u1ec7t \u0111\u1ed9 c\u1ef1c \u0111oan<\/strong>, n\u00f3i ri\u00eang, c\u00f3 th\u1ec3 g\u00e2y h\u1ea1i cho PCB, khi\u1ebfn c\u00e1c linh ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng b\u00ecnh th\u01b0\u1eddng ho\u1eb7c h\u1ecfng ho\u00e0n to\u00e0n.<\/p>\n<p>Khi ch\u00fang ta kh\u00e1m ph\u00e1 m\u1ed1i li\u00ean h\u1ec7 c\u1ee7a <strong>c\u0103ng th\u1eb3ng nhi\u1ec7t<\/strong> v\u00e0 tr\u1ee5c tr\u1eb7c c\u1ee7a PCB, ch\u00fang t\u00f4i s\u1ebd xem x\u00e9t vai tr\u00f2 quan tr\u1ecdng c\u1ee7a vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u v\u00e0 nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t trong vi\u1ec7c gi\u1ea3m thi\u1ec3u v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn n\u00e0y.<\/p>\n<h3>Nhi\u1ec7t \u0111\u1ed9 c\u1ef1c \u0111oan quan tr\u1ecdng<\/h3>\n<p>Trong \u0111i\u1ec1u ki\u1ec7n qu\u00e1 n\u00f3ng ho\u1eb7c qu\u00e1 l\u1ea1nh, b\u1ea3ng m\u1ea1ch in d\u1ec5 b\u1ecb <strong>c\u0103ng th\u1eb3ng nhi\u1ec7t<\/strong>, ch\u1ea5t x\u00fac t\u00e1c ch\u00ednh g\u00e2y ra s\u1ef1 c\u1ed1 v\u00e0 h\u1ecfng h\u00f3c c\u1ee7a PCB.<\/p>\n<p>Nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn <strong>c\u0103ng th\u1eb3ng nhi\u1ec7t<\/strong>, khi\u1ebfn c\u00e1c th\u00e0nh ph\u1ea7n gi\u00e3n n\u1edf v\u00e0 co l\u1ea1i \u1edf c\u00e1c t\u1ed1c \u0111\u1ed9 kh\u00e1c nhau, d\u1eabn \u0111\u1ebfn <strong>m\u1ed1i h\u00e0n y\u1ebfu<\/strong> v\u00e0 kh\u1ea3 n\u0103ng th\u1ea5t b\u1ea1i t\u0103ng cao.<\/p>\n<p>Tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ed3ng v\u00e0 l\u1edbp m\u1ea1 th\u00edch h\u1ee3p \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c gi\u1ea3m \u1ee9ng su\u1ea5t nhi\u1ec7t tr\u00ean c\u00e1c th\u00e0nh ph\u1ea7n PCB, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady.<\/p>\n<p>C\u00e1c th\u00e0nh ph\u1ea7n b\u1ecb ch\u00e1y tr\u00ean PCB l\u00e0 d\u1ea5u hi\u1ec7u d\u1ec5 nh\u1eadn bi\u1ebft c\u1ee7a c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn \u1ee9ng su\u1ea5t nhi\u1ec7t, c\u00f3 th\u1ec3 g\u00e2y ra th\u1ea3m h\u1ecda cho <strong>\u1ee9ng d\u1ee5ng hi\u1ec7u su\u1ea5t cao<\/strong>.<\/p>\n<p>Hi\u1ec7u qu\u1ea3 <strong>t\u1ea3n nhi\u1ec7t<\/strong> l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1ea3m thi\u1ec3u \u1ee9ng su\u1ea5t nhi\u1ec7t v\u00e0 ng\u0103n ng\u1eeba h\u1ecfng h\u00f3c.<\/p>\n<p>B\u1eb1ng c\u00e1ch hi\u1ec3u \u0111\u01b0\u1ee3c t\u00e1c \u0111\u1ed9ng c\u1ee7a <strong>nhi\u1ec7t \u0111\u1ed9 c\u1ef1c \u0111oan<\/strong> tr\u00ean PCB, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf v\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p ch\u1ee7 \u0111\u1ed9ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a s\u1ea3n ph\u1ea9m.<\/p>\n<h3>L\u1ed7i l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u<\/h3>\n<p>Vi\u1ec7c xem x\u00e9t kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7 c\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p v\u1ec1 t\u1ed1c \u0111\u1ed9 gi\u00e3n n\u1edf nhi\u1ec7t, l\u00e0m tr\u1ea7m tr\u1ecdng th\u00eam \u1ee9ng su\u1ea5t nhi\u1ec7t v\u00e0 t\u0103ng kh\u1ea3 n\u0103ng x\u1ea3y ra tr\u1ee5c tr\u1eb7c c\u1ee7a PCB. C\u00e1c l\u1ed7i l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u1ee9ng su\u1ea5t nhi\u1ec7t, d\u1eabn \u0111\u1ebfn tr\u1ee5c tr\u1eb7c v\u00e0 h\u1ecfng h\u00f3c \u1edf b\u1ea3ng m\u1ea1ch in. \u1ee8ng su\u1ea5t n\u00e0y c\u00f3 th\u1ec3 l\u00e0m y\u1ebfu m\u1ed1i h\u00e0n, khi\u1ebfn ch\u00fang h\u1ecfng s\u1edbm.<\/p>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: center\">T\u00e0i s\u1ea3n v\u1eadt ch\u1ea5t<\/th>\n<th style=\"text-align: center\">T\u1ef7 l\u1ec7 gi\u00e3n n\u1edf nhi\u1ec7t<\/th>\n<th style=\"text-align: center\">H\u1eadu qu\u1ea3 c\u1ee7a s\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: center\">\u0110\u1ed3ng<\/td>\n<td style=\"text-align: center\">16,5 ppm\/K<\/td>\n<td style=\"text-align: center\">M\u1ed1i h\u00e0n y\u1ebfu<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">FR4<\/td>\n<td style=\"text-align: center\">12-14 ppm\/K<\/td>\n<td style=\"text-align: center\">\u1ee8ng su\u1ea5t nhi\u1ec7t v\u00e0 tr\u1ee5c tr\u1eb7c PCB<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">H\u00e0n<\/td>\n<td style=\"text-align: center\">21-25 ppm\/K<\/td>\n<td style=\"text-align: center\">C\u00e1c kh\u1edbp b\u1ecb n\u1ee9t ho\u1eb7c g\u00e3y<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">m\u1ea1<\/td>\n<td style=\"text-align: center\">10-15 ppm\/K<\/td>\n<td style=\"text-align: center\">Gi\u1ea3m tu\u1ed5i th\u1ecd v\u00e0 \u0111\u1ed9 tin c\u1eady<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>PCB hi\u1ec7u su\u1ea5t cao c\u1ea7n t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3 \u0111\u1ec3 gi\u1ea3m t\u00e1c \u0111\u1ed9ng c\u1ee7a \u1ee9ng su\u1ea5t nhi\u1ec7t. Tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ed3ng v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 m\u1ea1 kh\u00f4ng \u0111\u00fang c\u00f3 th\u1ec3 l\u00e0m tr\u1ea7m tr\u1ecdng th\u00eam \u1ee9ng su\u1ea5t nhi\u1ec7t, d\u1eabn \u0111\u1ebfn ch\u00e1y c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 tr\u1ee5c tr\u1eb7c PCB. B\u1eb1ng c\u00e1ch hi\u1ec3u \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 gi\u00e3n n\u1edf c\u1ee7a v\u1eadt li\u1ec7u v\u00e0 h\u1eadu qu\u1ea3 c\u1ee7a ch\u00fang, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t \u0111\u1ec3 gi\u1ea3m thi\u1ec3u \u1ee9ng su\u1ea5t nhi\u1ec7t v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t PCB \u0111\u00e1ng tin c\u1eady.<\/p>\n<h2>H\u00e0n k\u00e9m v\u00e0 h\u1ecfng m\u1ed1i n\u1ed1i<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/inadequate_soldering_causes_failures.jpg\" alt=\"h\u00e0n kh\u00f4ng \u0111\u1ee7 g\u00e2y ra h\u1ecfng h\u00f3c\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Vi\u1ec7c h\u00e0n k\u00e9m v\u00e0 m\u1ed1i n\u1ed1i b\u1ecb h\u1ecfng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn tr\u1ee5c tr\u1eb7c ho\u1eb7c h\u1ecfng h\u00f3c \u1edf B\u1ea3ng m\u1ea1ch in (PCB).<\/p>\n<p>M\u1ed1i h\u00e0n l\u1ea1nh, \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh do <strong>d\u00f2ng h\u00e0n kh\u00f4ng \u0111\u1ee7<\/strong>, l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a c\u00e1c k\u1ebft n\u1ed1i tr\u00ean PCB.<\/p>\n<p>D\u00f2ng h\u00e0n kh\u00f4ng \u0111\u1ee7 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn m\u1ed1i h\u00e0n y\u1ebfu, l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng h\u1ecfng PCB.<\/p>\n<h3>H\u00ecnh th\u1ee9c m\u1ed1i h\u00e0n l\u1ea1nh<\/h3>\n<p>Nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng \u0111\u1ee7 ho\u1eb7c k\u1ef9 thu\u1eadt h\u00e0n kh\u00f4ng \u0111\u00fang c\u00e1ch c\u00f3 th\u1ec3 khi\u1ebfn m\u1ed1i h\u00e0n t\u1ea1o th\u00e0nh li\u00ean k\u1ebft y\u1ebfu v\u1edbi c\u00e1c linh ki\u1ec7n, d\u1eabn \u0111\u1ebfn m\u1ed1i h\u00e0n ngu\u1ed9i, l\u00e0m gi\u1ea3m \u0111\u1ed9 tin c\u1eady c\u1ee7a b\u1ea3ng m\u1ea1ch in.<\/p>\n<p>M\u1ed1i h\u00e0n ngu\u1ed9i l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p trong s\u1ea3n xu\u1ea5t PCB, d\u1eabn \u0111\u1ebfn k\u1ebft n\u1ed1i \u0111i\u1ec7n kh\u00f4ng li\u00ean t\u1ee5c, h\u1ecfng m\u1ea1ch v\u00e0 tr\u1ee5c tr\u1eb7c chung. Nguy\u00ean nh\u00e2n ch\u00ednh g\u00e2y ra m\u1ed1i h\u00e0n ngu\u1ed9i l\u00e0 nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng \u0111\u1ee7 trong qu\u00e1 tr\u00ecnh h\u00e0n v\u00e0 k\u1ef9 thu\u1eadt kh\u00f4ng ph\u00f9 h\u1ee3p, d\u1eabn \u0111\u1ebfn m\u1ed1i h\u00e0n y\u1ebfu.<\/p>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: center\"><strong>Nguy\u00ean nh\u00e2n<\/strong><\/th>\n<th style=\"text-align: center\"><strong>C\u00e1c hi\u1ec7u \u1ee9ng<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: center\">Nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng \u0111\u1ee7<\/td>\n<td style=\"text-align: center\">C\u00e1c kh\u1edbp y\u1ebfu, k\u1ebft n\u1ed1i kh\u00f4ng li\u00ean t\u1ee5c<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">K\u1ef9 thu\u1eadt kh\u00f4ng \u0111\u00fang<\/td>\n<td style=\"text-align: center\">M\u1ed1i h\u00e0n ngu\u1ed9i, l\u1ed7i m\u1ea1ch<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">\u0110\u00e0o t\u1ea1o kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7<\/td>\n<td style=\"text-align: center\">S\u1ef1 c\u1ed1 PCB, v\u1ea5n \u0111\u1ec1 v\u1ec1 \u0111\u1ed9 tin c\u1eady<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0110\u1ec3 x\u00e1c \u0111\u1ecbnh m\u1ed1i h\u00e0n ngu\u1ed9i, ki\u1ec3m tra tr\u1ef1c quan v\u00e0 th\u1eed nghi\u1ec7m b\u1eb1ng \u0111\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng c\u00f3 th\u1ec3 gi\u00fap ph\u00e1t hi\u1ec7n v\u1ea5n \u0111\u1ec1 \u0111\u1ec3 s\u1eeda ch\u1eefa. \u0110i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 s\u1eed d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt h\u00e0n, thi\u1ebft b\u1ecb v\u00e0 \u0111\u00e0o t\u1ea1o ph\u00f9 h\u1ee3p \u0111\u1ec3 ng\u0103n ng\u1eeba m\u1ed1i h\u00e0n ngu\u1ed9i v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t PCB \u0111\u00e1ng tin c\u1eady. B\u1eb1ng c\u00e1ch hi\u1ec3u nguy\u00ean nh\u00e2n v\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u1ed1i h\u00e0n ngu\u1ed9i, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p ch\u1ee7 \u0111\u1ed9ng \u0111\u1ec3 ng\u0103n ng\u1eeba nh\u1eefng khi\u1ebfm khuy\u1ebft n\u00e0y v\u00e0 duy tr\u00ec ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a b\u1ea3ng m\u1ea1ch in.<\/p>\n<h3>D\u00f2ng h\u00e0n kh\u00f4ng \u0111\u1ee7<\/h3>\n<p>Trong th\u1eddi gian <strong>qu\u00e1 tr\u00ecnh h\u00e0n<\/strong>, d\u00f2ng ch\u1ea3y c\u1ee7a ch\u1ea5t h\u00e0n c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng, d\u1eabn \u0111\u1ebfn <strong>kh\u1edbp y\u1ebfu<\/strong> v\u00e0 ti\u1ec1m n\u0103ng <strong>l\u1ed7i b\u1ea3ng m\u1ea1ch<\/strong>, nh\u1ea5n m\u1ea1nh th\u00eam t\u1ea7m quan tr\u1ecdng c\u1ee7a <strong>k\u1ef9 thu\u1eadt h\u00e0n \u0111\u00fang c\u00e1ch<\/strong>.<\/p>\n<p>D\u00f2ng h\u00e0n kh\u00f4ng \u0111\u1ee7 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn m\u1ed1i n\u1ed1i y\u1ebfu, d\u1ec5 n\u1ee9t v\u00e0 g\u00e3y khi ch\u1ecbu \u1ee9ng su\u1ea5t, g\u00e2y ra k\u1ebft n\u1ed1i \u0111i\u1ec7n kh\u00f4ng li\u00ean t\u1ee5c v\u00e0 tr\u1ee5c tr\u1eb7c h\u1ec7 th\u1ed1ng. D\u00f2ng h\u00e0n kh\u00f4ng \u0111\u1ee7 c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn <strong>m\u1ed1i h\u00e0n l\u1ea1nh<\/strong>, v\u1ed1n n\u1ed5i ti\u1ebfng l\u00e0 kh\u00f4ng \u0111\u00e1ng tin c\u1eady v\u00e0 d\u1ec5 b\u1ecb h\u1ecfng.<\/p>\n<p>\u0110\u1ec3 gi\u1ea3m thi\u1ec3u nh\u1eefng r\u1ee7i ro n\u00e0y, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i s\u1eed d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt h\u00e0n ph\u00f9 h\u1ee3p, \u0111\u1ea3m b\u1ea3o d\u00f2ng h\u00e0n \u0111\u1ee7 v\u00e0 k\u1ebft n\u1ed1i ch\u1eafc ch\u1eafn, \u0111\u00e1ng tin c\u1eady tr\u00ean b\u1ea3ng m\u1ea1ch in (PCB).<\/p>\n<p>C\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng trong qu\u00e1 tr\u00ecnh h\u00e0n l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ng\u0103n ng\u1eeba d\u00f2ng h\u00e0n kh\u00f4ng \u0111\u1ee7 v\u00e0 c\u00e1c l\u1ed7i ti\u1ec1m \u1ea9n c\u1ee7a b\u1ea3ng m\u1ea1ch. B\u1eb1ng c\u00e1ch th\u1ef1c hi\u1ec7n nghi\u00eam ng\u1eb7t <strong>bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng<\/strong>, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro v\u1ec1 d\u00f2ng h\u00e0n kh\u00f4ng \u0111\u1ee7 v\u00e0 \u0111\u1ea3m b\u1ea3o s\u1ea3n xu\u1ea5t PCB ch\u1ea5t l\u01b0\u1ee3ng cao, \u0111\u00e1ng tin c\u1eady.<\/p>\n<h2>L\u1ed7i s\u1ea3n xu\u1ea5t v\u00e0 l\u1ed7i PCB<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/inadequate_quality_control_measures.jpg\" alt=\"bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>C\u00e1c l\u1ed7i s\u1ea3n xu\u1ea5t, ch\u1ecbu tr\u00e1ch nhi\u1ec7m cho ph\u1ea7n l\u1edbn c\u00e1c l\u1ed7i c\u1ee7a b\u1ea3ng m\u1ea1ch in trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p, c\u00f3 th\u1ec3 bi\u1ec3u hi\u1ec7n d\u01b0\u1edbi nhi\u1ec1u h\u00ecnh th\u1ee9c kh\u00e1c nhau, bao g\u1ed3m c\u00e1c l\u1edbp kh\u00f4ng th\u1eb3ng h\u00e0ng, \u0111o\u1ea3n m\u1ea1ch v\u00e0 t\u00edn hi\u1ec7u giao nhau. Nh\u1eefng l\u1ed7i n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u1ecfng h\u00f3c th\u1ea3m kh\u1ed1c, khi\u1ebfn PCB kh\u00f4ng s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c. \u0110\u1ec3 gi\u1ea3m thi\u1ec3u nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng m\u1ea1nh m\u1ebd trong qu\u00e1 tr\u00ecnh ch\u1ebf t\u1ea1o v\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: center\">V\u1ea5n \u0111\u1ec1 s\u1ea3n xu\u1ea5t<\/th>\n<th style=\"text-align: center\">S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<th style=\"text-align: center\">T\u00e1c \u0111\u1ed9ng \u0111\u1ebfn PCB<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: center\">C\u00e1c l\u1edbp kh\u00f4ng th\u1eb3ng h\u00e0ng<\/td>\n<td style=\"text-align: center\">C\u00e1c l\u1edbp c\u1ee7a PCB kh\u00f4ng \u0111\u01b0\u1ee3c c\u0103n ch\u1ec9nh \u0111\u00fang c\u00e1ch, d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch<\/td>\n<td style=\"text-align: center\">L\u1ed7i PCB, hi\u1ec7u su\u1ea5t gi\u1ea3m<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">Ch\u1eadp m\u1ea1ch<\/td>\n<td style=\"text-align: center\">K\u1ebft n\u1ed1i kh\u00f4ng mong mu\u1ed1n gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n PCB<\/td>\n<td style=\"text-align: center\">L\u1ed7i PCB, hi\u1ec7u su\u1ea5t gi\u1ea3m<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">T\u00edn hi\u1ec7u ch\u00e9o<\/td>\n<td style=\"text-align: center\">T\u00edn hi\u1ec7u truy\u1ec1n gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n kh\u00f4ng ch\u00ednh x\u00e1c<\/td>\n<td style=\"text-align: center\">L\u1ed7i PCB, hi\u1ec7u su\u1ea5t gi\u1ea3m<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">H\u00e0n b\u1ecb nhi\u1ec5m b\u1ea9n<\/td>\n<td style=\"text-align: center\">C\u00e1c t\u1ea1p ch\u1ea5t trong m\u1ed1i h\u00e0n \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng m\u1ed1i h\u00e0n<\/td>\n<td style=\"text-align: center\">L\u1ed7i PCB, gi\u1ea3m \u0111\u1ed9 tin c\u1eady<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">K\u1ef9 thu\u1eadt h\u00e0n kh\u00f4ng \u0111\u00fang c\u00e1ch<\/td>\n<td style=\"text-align: center\">Ph\u01b0\u01a1ng ph\u00e1p h\u00e0n kh\u00f4ng \u0111\u00fang d\u1eabn \u0111\u1ebfn m\u1ed1i h\u00e0n y\u1ebfu<\/td>\n<td style=\"text-align: center\">L\u1ed7i PCB, gi\u1ea3m \u0111\u1ed9 tin c\u1eady<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Ki\u1ec3m tra v\u00e0 th\u1eed nghi\u1ec7m PCB \u0111\u00fang c\u00e1ch trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p c\u00f3 th\u1ec3 gi\u00fap x\u00e1c \u0111\u1ecbnh v\u00e0 kh\u1eafc ph\u1ee5c c\u00e1c v\u1ea5n \u0111\u1ec1 s\u1ea3n xu\u1ea5t n\u00e0y, \u0111\u1ea3m b\u1ea3o s\u1ea3n xu\u1ea5t PCB ch\u1ea5t l\u01b0\u1ee3ng cao. B\u1eb1ng c\u00e1ch gi\u1ea3i quy\u1ebft c\u00e1c khi\u1ebfm khuy\u1ebft n\u00e0y, nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u l\u1ed7i PCB v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady.<\/p>\n<h2>C\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng v\u00e0 s\u1ef1 ph\u00e2n h\u1ee7y PCB<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/environmental_impact_of_pcbs.jpg\" alt=\"t\u00e1c \u0111\u1ed9ng m\u00f4i tr\u01b0\u1eddng c\u1ee7a pcb\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>V\u00ec c\u00e1c b\u1ea3ng m\u1ea1ch in v\u1ed1n d\u1ec5 b\u1ecb \u1ea3nh h\u01b0\u1edfng <strong>c\u0103ng th\u1eb3ng v\u1ec1 m\u00f4i tr\u01b0\u1eddng<\/strong>, ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec7t, <strong>b\u1ee5i<\/strong>v\u00e0 \u0111\u1ed9 \u1ea9m c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 xu\u1ed1ng c\u1ea5p v\u00e0 kh\u1ea3 n\u0103ng h\u1ecfng h\u00f3c.<\/p>\n<p>C\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng, ch\u1eb3ng h\u1ea1n nh\u01b0 <strong>nhi\u1ec7t \u0111\u1ed9 c\u1ef1c \u0111oan<\/strong>, c\u00f3 th\u1ec3 \u0111\u1ea9y nhanh qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ee7y PCB, g\u00e2y ra <strong>c\u0103ng th\u1eb3ng nhi\u1ec7t<\/strong> v\u00e0 kh\u1ea3 n\u0103ng h\u1ecfng h\u00f3c linh ki\u1ec7n.<\/p>\n<p>C\u00e1c m\u1ea3nh v\u1ee5n l\u1ea1 nh\u01b0 b\u1ee5i, <strong>t\u00f3c<\/strong>, ch\u1ea5t l\u1ecfng v\u00e0 s\u1ee3i c\u00f3 th\u1ec3 g\u00e2y qu\u00e1 nhi\u1ec7t v\u00e0 l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t c\u1ee7a PCB theo th\u1eddi gian.<\/p>\n<p>\u0110\u1ec3 gi\u1ea3m thi\u1ec3u nh\u1eefng r\u1ee7i ro n\u00e0y, <strong>m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t c\u00f3 ki\u1ec3m so\u00e1t kh\u00ed h\u1eadu<\/strong> \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb \u0111\u1ec3 duy tr\u00ec m\u1ee9c \u0111\u1ed9 \u1ea9m an to\u00e0n v\u00e0 ng\u0103n ng\u1eeba c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn PCB.<\/p>\n<p>C\u00e1c t\u00e1c \u0111\u1ed9ng ng\u1eabu nhi\u00ean, qu\u00e1 t\u1ea3i \u0111i\u1ec7n, t\u0103ng \u0111\u1ed9t bi\u1ebfn v\u00e0 ph\u00f3ng t\u0129nh \u0111i\u1ec7n (ESD) c\u00f3 th\u1ec3 g\u00f3p ph\u1ea7n g\u00e2y ra <strong>L\u1ed7i PCB<\/strong>.<\/p>\n<p>S\u1ef1 t\u00edch t\u1ee5 c\u1ee7a c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 suy tho\u00e1i PCB, cu\u1ed1i c\u00f9ng d\u1eabn \u0111\u1ebfn h\u1ecfng h\u00f3c.<\/p>\n<p>\u0110i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i t\u00ednh \u0111\u1ebfn c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng n\u00e0y trong qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf v\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a b\u1ea3ng m\u1ea1ch in.<\/p>\n<h2>L\u1ed7i thi\u1ebft k\u1ebf v\u00e0 s\u1ef1 k\u00e9m hi\u1ec7u qu\u1ea3 c\u1ee7a PCB<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/identifying_electronics_manufacturing_issues.jpg\" alt=\"x\u00e1c \u0111\u1ecbnh c\u00e1c v\u1ea5n \u0111\u1ec1 s\u1ea3n xu\u1ea5t \u0111i\u1ec7n t\u1eed\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>B\u1ea3n ch\u1ea5t <strong>l\u1ed7i thi\u1ebft k\u1ebf<\/strong> v\u00e0 t\u00ecnh tr\u1ea1ng thi\u1ebfu hi\u1ec7u qu\u1ea3 c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ea3ng m\u1ea1ch in, d\u1eabn \u0111\u1ebfn h\u1ecfng h\u00f3c ho\u1eb7c tr\u1ee5c tr\u1eb7c s\u1edbm.<\/p>\n<p>L\u1ed7i thi\u1ebft k\u1ebf PCB, ch\u1eb3ng h\u1ea1n nh\u01b0 l\u1ed7 r\u1ed7ng m\u1ea1 v\u00e0 <strong>kho\u1ea3ng c\u00e1ch t\u1eeb \u0111\u1ed3ng \u0111\u1ebfn m\u00e9p kh\u00f4ng \u0111\u1ee7<\/strong>, c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn <strong>l\u1ed7i b\u1ea3ng m\u1ea1ch<\/strong>. Ngo\u00e0i ra, <strong>m\u1eb7t n\u1ea1 h\u00e0n b\u1ecb thi\u1ebfu<\/strong> gi\u1eefa c\u00e1c mi\u1ebfng \u0111\u1ec7m v\u00e0 b\u1eaby axit l\u00e0 nh\u1eefng \u0111i\u1ec3m k\u00e9m hi\u1ec7u qu\u1ea3 trong thi\u1ebft k\u1ebf th\u01b0\u1eddng g\u1eb7p c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a PCB.<\/p>\n<p>Vi\u1ec7c che ch\u1eafn kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7 kh\u1ecfi nhi\u1ec5u \u0111i\u1ec7n t\u1eeb do thi\u1ebft k\u1ebf s\u01a1 su\u1ea5t c\u00f3 th\u1ec3 g\u00e2y ra tr\u1ee5c tr\u1eb7c cho PCB. Vi\u1ec7c l\u1eadp k\u1ebf ho\u1ea1ch b\u1ed1 tr\u00ed kh\u00f4ng \u0111\u00fang c\u00e1ch v\u00e0 l\u1ed7i h\u00e0n do l\u1ed7i thi\u1ebft k\u1ebf c\u0169ng c\u00f3 th\u1ec3 g\u00f3p ph\u1ea7n g\u00e2y ra h\u1ecfng h\u00f3c cho PCB.<\/p>\n<p>\u0110\u1ec3 gi\u1ea3m thi\u1ec3u nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 s\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m Thi\u1ebft k\u1ebf \u0111\u1ec3 s\u1ea3n xu\u1ea5t (DFM) v\u00e0 <strong>th\u1eed nghi\u1ec7m nguy\u00ean m\u1eabu<\/strong> \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 s\u1eeda l\u1ed7i thi\u1ebft k\u1ebf trong PCB. B\u1eb1ng c\u00e1ch \u0111\u00f3, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng PCB c\u1ee7a h\u1ecd \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n b\u1eaft bu\u1ed9c, gi\u1ea3m thi\u1ec3u r\u1ee7i ro h\u1ecfng h\u00f3c v\u00e0 \u0111\u1ea3m b\u1ea3o <strong>hi\u1ec7u su\u1ea5t hi\u1ec7u qu\u1ea3<\/strong>.<\/p>\n<h2>C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>Nguy\u00ean nh\u00e2n ch\u00ednh g\u00e2y ra l\u1ed7i PCB l\u00e0 g\u00ec?<\/h3>\n<p>Th\u1ee7 ph\u1ea1m ch\u00ednh g\u00e2y ra l\u1ed7i b\u1ea3ng m\u1ea1ch in (PCB) l\u00e0 <strong>khi\u1ebfm khuy\u1ebft \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u<\/strong> trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p.<\/p>\n<p>Nh\u1eefng khi\u1ebfm khuy\u1ebft n\u00e0y c\u00f3 th\u1ec3 bi\u1ec3u hi\u1ec7n d\u01b0\u1edbi nhi\u1ec1u h\u00ecnh th\u1ee9c kh\u00e1c nhau, bao g\u1ed3m c\u00e1c l\u1edbp kh\u00f4ng th\u1eb3ng h\u00e0ng, \u0111o\u1ea3n m\u1ea1ch v\u00e0 t\u00edn hi\u1ec7u ch\u00e9o.<\/p>\n<p>Nh\u1eefng sai s\u00f3t nh\u01b0 v\u1eady c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn nh\u1eefng th\u1ea5t b\u1ea1i th\u1ea3m kh\u1ed1c, nh\u1ea5n m\u1ea1nh t\u1ea7m quan tr\u1ecdng c\u1ee7a <strong>bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng<\/strong> trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p PCB \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady v\u00e0 gi\u1ea3m thi\u1ec3u r\u1ee7i ro tr\u1ee5c tr\u1eb7c.<\/p>\n<h3>C\u00e1c ch\u1ebf \u0111\u1ed9 h\u1ecfng h\u00f3c c\u1ee7a b\u1ea3ng m\u1ea1ch in l\u00e0 g\u00ec?<\/h3>\n<p>Nguy\u00ean nh\u00e2n n\u00e0o khi\u1ebfn b\u1ea3ng m\u1ea1ch in kh\u00f4ng \u0111\u00e1ng tin c\u1eady?<\/p>\n<p>C\u00e1c <strong>ch\u1ebf \u0111\u1ed9 th\u1ea5t b\u1ea1i<\/strong> c\u1ee7a <strong>bo m\u1ea1ch in<\/strong> bao g\u1ed3m m\u1ed9t lo\u1ea1t c\u00e1c khi\u1ebfm khuy\u1ebft v\u00e0 tr\u1ee5c tr\u1eb7c. Ch\u00fang bao g\u1ed3m c\u00e1c khi\u1ebfm khuy\u1ebft ph\u00e1t sinh trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p, c\u00e1c th\u00e0nh ph\u1ea7n b\u1ecb ch\u00e1y, <strong>nh\u00e2n t\u1ed1 m\u00f4i tr\u01b0\u1eddng<\/strong> ch\u1eb3ng h\u1ea1n nh\u01b0 nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 \u1ea9m, c\u00e1c v\u1ea5n \u0111\u1ec1 h\u00e0n v\u00e0 <strong>l\u1ed7i c\u1ee7a con ng\u01b0\u1eddi<\/strong>.<\/p>\n<p>M\u1ed7i ch\u1ebf \u0111\u1ed9 l\u1ed7i n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra h\u1eadu qu\u1ea3 nghi\u00eam tr\u1ecdng, bao g\u1ed3m tr\u1ee5c tr\u1eb7c linh ki\u1ec7n, m\u1ea5t d\u1eef li\u1ec7u v\u00e0 h\u1ec7 th\u1ed1ng b\u1ecb s\u1eadp.<\/p>\n<p>Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c ch\u1ebf \u0111\u1ed9 h\u1ecfng h\u00f3c n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 thi\u1ebft k\u1ebf v\u00e0 s\u1ea3n xu\u1ea5t b\u1ea3ng m\u1ea1ch in \u0111\u00e1ng tin c\u1eady.<\/p>\n<h3>Nh\u1eefng l\u1ed7i th\u01b0\u1eddng g\u1eb7p \u1edf PCB l\u00e0 g\u00ec?<\/h3>\n<p>Trong l\u0129nh v\u1ef1c s\u1ea3n xu\u1ea5t b\u1ea3ng m\u1ea1ch in (PCB), c\u00e1c l\u1ed7i ph\u1ed5 bi\u1ebfn c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady c\u1ee7a s\u1ea3n ph\u1ea9m. <strong>C\u00e1c l\u1edbp kh\u00f4ng th\u1eb3ng h\u00e0ng<\/strong>&#44; <strong>ng\u1eafn m\u1ea1ch<\/strong>v\u00e0 t\u00edn hi\u1ec7u ch\u00e9o l\u00e0 nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u1ecfng PCB. Nh\u1eefng l\u1ed7i n\u00e0y th\u01b0\u1eddng nh\u1ea1y c\u1ea3m v\u1edbi ph\u00f3ng t\u0129nh \u0111i\u1ec7n (ESD), c\u00f3 th\u1ec3 l\u00e0m tr\u1ea7m tr\u1ecdng th\u00eam v\u1ea5n \u0111\u1ec1.<\/p>\n<p>Vi\u1ec7c \u0111\u1ea3m b\u1ea3o c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba th\u00edch h\u1ee3p, ch\u1eb3ng h\u1ea1n nh\u01b0 v\u1eadt li\u1ec7u an to\u00e0n ESD v\u00e0 nh\u00e2n vi\u00ean \u0111\u01b0\u1ee3c \u0111\u00e0o t\u1ea1o, c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u nh\u1eefng khi\u1ebfm khuy\u1ebft n\u00e0y, t\u1ea1o ra PCB ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n.<\/p>\n<h3>Hai v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p khi kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 b\u1ea3ng m\u1ea1ch l\u00e0 g\u00ec?<\/h3>\n<p>Khi kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 b\u1ea3ng m\u1ea1ch, hai v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n: <strong>th\u00e0nh ph\u1ea7n b\u1ecb ch\u00e1y<\/strong> V\u00e0 <strong>v\u1ea5n \u0111\u1ec1 h\u00e0n<\/strong>. Nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y c\u00f3 th\u1ec3 xu\u1ea5t ph\u00e1t t\u1eeb nhi\u1ec1u y\u1ebfu t\u1ed1, bao g\u1ed3m nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao, kho\u1ea3ng c\u00e1ch kh\u00f4ng ph\u00f9 h\u1ee3p v\u00e0 h\u1ecfng linh ki\u1ec7n. <strong>H\u00e0n b\u1ecb nhi\u1ec5m b\u1ea9n<\/strong> V\u00e0 <strong>k\u1ebft n\u1ed1i b\u1ecb l\u1ed7i<\/strong> l\u00e0m tr\u1ea7m tr\u1ecdng th\u00eam nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p>\n<p>Vi\u1ec7c x\u00e1c \u0111\u1ecbnh v\u00e0 gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 n\u00e0y l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1ea3i quy\u1ebft l\u1ed7i bo m\u1ea1ch. B\u1eb1ng c\u00e1ch hi\u1ec3u \u0111\u01b0\u1ee3c nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 c\u1ee7a c\u00e1c v\u1ea5n \u0111\u1ec1 n\u00e0y, c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 c\u1ed1 v\u00e0 gi\u1ea3i ph\u00e1p hi\u1ec7u qu\u1ea3, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a bo m\u1ea1ch.<\/p>","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7c t\u00ecm hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 nh\u1eefng nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y ra l\u1ed7i PCB l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ng\u0103n ng\u1eeba th\u1eddi gian ch\u1ebft t\u1ed1n k\u00e9m v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u c\u1ee7a h\u1ec7 th\u1ed1ng \u0111i\u1ec7n t\u1eed.<\/p>","protected":false},"author":9,"featured_media":2294,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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Lau","author_link":"https:\/\/tryvary.com\/vi\/author\/wsbpmbzuog4q\/"},"uagb_comment_info":0,"uagb_excerpt":"Gaining insight into the common causes of PCB failure is crucial for preventing costly downtime and ensuring optimal electronic system performance.","_links":{"self":[{"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/posts\/2295","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/comments?post=2295"}],"version-history":[{"count":1,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/posts\/2295\/revisions"}],"predecessor-version":[{"id":2511,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/posts\/2295\/revisions\/2511"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/media\/2294"}],"wp:attachment":[{"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/media?parent=2295"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/categories?post=2295"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/tags?post=2295"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}