{"id":1859,"date":"2024-06-23T12:41:52","date_gmt":"2024-06-23T12:41:52","guid":{"rendered":"https:\/\/tryvary.com\/?p=1859"},"modified":"2024-06-23T12:41:52","modified_gmt":"2024-06-23T12:41:52","slug":"copper-clad-laminate-water-absorption-rate","status":"publish","type":"post","link":"https:\/\/tryvary.com\/vi\/ty-le-hap-thu-nuoc-ma-dong\/","title":{"rendered":"\u0110o t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong t\u1ea5m PCB"},"content":{"rendered":"<p>\u0110o l\u01b0\u1eddng <strong>t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong> trong t\u1ea5m PCB l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a <strong>Linh ki\u1ec7n \u0111i\u1ec7n t\u1eed<\/strong>, v\u00ec s\u1ef1 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m qu\u00e1 m\u1ee9c c\u00f3 th\u1ec3 l\u00e0m t\u1ed5n h\u1ea1i \u0111\u1ebfn t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a v\u1eadt li\u1ec7u, d\u1eabn \u0111\u1ebfn ch\u1eadp \u0111i\u1ec7n, \u0103n m\u00f2n v\u00e0 ph\u00e2n t\u00e1ch. T\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a t\u1ea5m PCB, t\u00ednh ch\u1ea5t c\u01a1 v\u00e0 \u0111i\u1ec7n, v\u00e0 <strong>\u0111\u1ed9 b\u1ec1n v\u1eadt li\u1ec7u<\/strong>. <strong>Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ti\u00eau chu\u1ea9n h\u00f3a<\/strong>, ch\u1eb3ng h\u1ea1n nh\u01b0 ASTM D 570-57T, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o \u0111\u1eb7c t\u00ednh h\u1ea5p th\u1ee5 n\u01b0\u1edbc. Hi\u1ec3u \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u, <strong>thi\u1ebft k\u1ebf PCB<\/strong>, v\u00e0 c\u00e1c qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t. B\u1eb1ng c\u00e1ch kh\u00e1m ph\u00e1 s\u00e2u h\u01a1n, b\u1ea1n c\u00f3 th\u1ec3 kh\u00e1m ph\u00e1 s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong c\u00e1c l\u1edbp PCB v\u00e0 t\u1ea7m quan tr\u1ecdng c\u1ee7a n\u00f3 trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady c\u1ee7a h\u1ec7 th\u1ed1ng \u0111i\u1ec7n t\u1eed.<\/p>\n<h2>B\u00e0i h\u1ecdc ch\u00ednh<\/h2>\n<ul>\n<li>Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ASTM D 570-57T \u0111o t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong c\u00e1c l\u1edbp PCB b\u1eb1ng c\u00e1ch \u0111\u1ecbnh l\u01b0\u1ee3ng m\u1ee9c t\u0103ng tr\u1ecdng l\u01b0\u1ee3ng theo th\u1eddi gian ng\u00e2m.<\/li>\n<li>Ph\u00e2n t\u00edch tr\u1ecdng l\u01b0\u1ee3ng cung c\u1ea5p \u0111\u00e1nh gi\u00e1 \u0111\u1ecbnh l\u01b0\u1ee3ng v\u1ec1 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m, gi\u00fap \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i.<\/li>\n<li>Ph\u01b0\u01a1ng ph\u00e1p t\u0103ng tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt ph\u1ed5 bi\u1ebfn \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc, \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m c\u1ee7a v\u1eadt li\u1ec7u.<\/li>\n<li>Vi\u1ec7c \u0111o ch\u00ednh x\u00e1c t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc l\u00e0 r\u1ea5t quan tr\u1ecdng, v\u00ec t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 cao c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c t\u00ednh ch\u1ea5t c\u01a1, \u0111i\u1ec7n v\u00e0 h\u00f3a h\u1ecdc.<\/li>\n<li>Hi\u1ec3u h\u00e0nh vi h\u1ea5p th\u1ee5 n\u01b0\u1edbc l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u laminate PCB ph\u00f9 h\u1ee3p v\u00e0 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady trong m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt.<\/li>\n<\/ul>\n<h2>T\u1ea7m quan tr\u1ecdng c\u1ee7a t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/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\/p4_snYrBF6I\" 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 <strong>t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong> c\u1ee7a <strong>T\u1ea5m PCB<\/strong> l\u00e0 m\u1ed9t \u0111\u1eb7c t\u00ednh v\u1eadt ch\u1ea5t quan tr\u1ecdng c\u00f3 t\u00e1c \u0111\u1ed9ng s\u00e2u s\u1eafc \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady t\u1ed5ng th\u1ec3 c\u1ee7a <strong>bo m\u1ea1ch in<\/strong> trong c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau. <strong>H\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m<\/strong>, m\u1ed9t kh\u00eda c\u1ea1nh quan tr\u1ecdng c\u1ee7a t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc, \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn c\u00e1c t\u00ednh ch\u1ea5t c\u01a1, \u0111i\u1ec7n v\u00e0 h\u00f3a h\u1ecdc c\u1ee7a t\u1ea5m PCB. T\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc cao c\u00f3 th\u1ec3 l\u00e0m t\u1ed5n h\u1ea1i \u0111\u1ebfn <strong>t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a v\u1eadt li\u1ec7u<\/strong>, d\u1eabn \u0111\u1ebfn gi\u1ea3m hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n. Ng\u01b0\u1ee3c l\u1ea1i, t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc th\u1ea5p l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a t\u1ea5m PCB trong c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau.<\/p>\n<p>T\u1ea7m quan tr\u1ecdng c\u1ee7a t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc n\u1eb1m \u1edf kh\u1ea3 n\u0103ng x\u00e1c \u0111\u1ecbnh t\u00ednh ch\u1ea5t c\u1ee7a v\u1eadt li\u1ec7u. <strong>d\u1ec5 b\u1ecb t\u1ed5n th\u01b0\u01a1ng b\u1edfi \u0111\u1ed9 \u1ea9m<\/strong>, \u0111\u00e2y l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng trong <strong>L\u1ef1a ch\u1ecdn t\u1ea5m PCB<\/strong>.<\/p>\n<p>Hi\u1ec3u \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc c\u1ee7a t\u1ea5m PCB l\u00e0 r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ea3ng m\u1ea1ch in. C\u00e1c <strong>Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ASTM D 570-57T<\/strong> th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong c\u00e1c t\u1ea5m PCB, c\u00f3 t\u00ednh \u0111\u1ebfn c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 <strong>th\u1eddi gian ng\u00e2m<\/strong> v\u00e0 nhi\u1ec7t \u0111\u1ed9, \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc. B\u1eb1ng c\u00e1ch \u0111o v\u00e0 ki\u1ec3m so\u00e1t t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc, nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ea3n xu\u1ea5t t\u1ea5m PCB ch\u1ea5t l\u01b0\u1ee3ng cao, \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau.<\/p>\n<h2>Thu\u1ed9c t\u00ednh t\u1ea5m ph\u1ee7 \u0111\u1ed3ng<\/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\/copper_clad_laminate_features.jpg\" alt=\"t\u00ednh n\u0103ng laminate m\u1ea1 \u0111\u1ed3ng\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Khi ph\u00e2n t\u00edch c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a l\u1edbp m\u1ea1 \u0111\u1ed3ng, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i t\u00ednh \u0111\u1ebfn <strong>h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t<\/strong> v\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a n\u00f3 t\u1edbi <strong>t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong>.<\/p>\n<p>H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t, kh\u00e1c nhau gi\u1eefa c\u00e1c v\u1eadt li\u1ec7u c\u00e1n m\u1ecfng, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh nh\u1ea1y c\u1ea3m c\u1ee7a t\u1ea5m c\u00e1n m\u1ecfng \u0111\u1ed1i v\u1edbi s\u1ef1 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m v\u00e0 s\u1ef1 suy gi\u1ea3m c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 v\u00e0 \u0111i\u1ec7n sau \u0111\u00f3.<\/p>\n<p>Hi\u1ec3u \u0111\u01b0\u1ee3c nh\u1eefng t\u00e1c \u0111\u1ed9ng n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111o ch\u00ednh x\u00e1c t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong <strong>T\u1ea5m PCB<\/strong>.<\/p>\n<h3>H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t<\/h3>\n<p>T\u1ea5m \u0111\u1ed3ng m\u1ea1 m\u1ecfng tr\u01b0ng b\u00e0y \u0111\u1ed9c \u0111\u00e1o <strong>h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t<\/strong>, M\u1ed9t <strong>t\u00e0i s\u1ea3n quan tr\u1ecdng<\/strong> \u0111i\u1ec1u \u0111\u00f3 \u1ea3nh h\u01b0\u1edfng r\u1ea5t l\u1edbn \u0111\u1ebfn h\u1ecd <strong>\u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc<\/strong> trong qu\u00e1 tr\u00ecnh dao \u0111\u1ed9ng nhi\u1ec7t \u0111\u1ed9. H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t, th\u01b0\u1edbc \u0111o m\u1ee9c \u0111\u1ed9 thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc c\u1ee7a v\u1eadt li\u1ec7u theo s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9, c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady c\u1ee7a <strong>c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed<\/strong>.<\/p>\n<p>C\u00e1c v\u1eadt li\u1ec7u c\u00e1n m\u1ecfng kh\u00e1c nhau c\u00f3 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf kh\u00e1c nhau, l\u00e0m cho m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p h\u01a1n cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 so v\u1edbi c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c. V\u00ed d\u1ee5, <strong>t\u1ea5m ph\u1ee7 \u0111\u1ed3ng<\/strong> v\u1edbi h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t th\u1ea5p h\u01a1n \u0111\u01b0\u1ee3c \u01b0u ti\u00ean cho <strong>\u0111\u1ed9 ch\u00ednh x\u00e1c cao<\/strong> c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, trong \u0111\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc l\u00e0 t\u1ed1i quan tr\u1ecdng.<\/p>\n<p>T\u00ecm hi\u1ec3u t\u00ednh ch\u1ea5t gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a <strong>T\u1ea5m PCB<\/strong> l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n t\u1eed \u0111\u00e1ng tin c\u1eady. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t xem x\u00e9t h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t khi l\u1ef1a ch\u1ecdn t\u1ea5m ph\u1ee7 \u0111\u1ed3ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t ph\u00f9 h\u1ee3p trong c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau.<\/p>\n<p>S\u1ef1 hi\u1ec3u bi\u1ebft th\u1ea5u \u0111\u00e1o v\u1ec1 \u0111\u1eb7c t\u00ednh quan tr\u1ecdng n\u00e0y cho ph\u00e9p ph\u00e1t tri\u1ec3n c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n t\u1eed m\u1ea1nh m\u1ebd v\u00e0 hi\u1ec7u qu\u1ea3. B\u1eb1ng c\u00e1ch nh\u1eadn ra t\u1ea7m quan tr\u1ecdng c\u1ee7a h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 t\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf v\u00e0 <strong>l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u<\/strong>, cu\u1ed1i c\u00f9ng l\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed.<\/p>\n<h3>Hi\u1ec7u \u1ee9ng h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m<\/h3>\n<p>Ngo\u00e0i s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t, m\u1ed9t kh\u00eda c\u1ea1nh quan tr\u1ecdng kh\u00e1c c\u1ee7a t\u00ednh ch\u1ea5t t\u1ea5m \u0111\u1ed3ng l\u00e0 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m, c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc, <strong>\u0111i\u1ec7n<\/strong>v\u00e0 t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc c\u1ee7a b\u1ea3ng m\u1ea1ch in.<\/p>\n<p>S\u1ef1 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m trong c\u00e1c t\u1ea5m PCB c\u00f3 th\u1ec3 c\u00f3 \u1ea3nh h\u01b0\u1edfng s\u00e2u s\u1eafc \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a ch\u00fang, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng c\u1ea7n t\u00ednh \u0111\u1ebfn trong thi\u1ebft k\u1ebf v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang.<\/p>\n<p>Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ASTM D 570-57T th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong c\u00e1c t\u1ea5m PCB, cung c\u1ea5p nh\u1eefng hi\u1ec3u bi\u1ebft c\u00f3 gi\u00e1 tr\u1ecb v\u1ec1 \u0111\u1eb7c t\u00ednh h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m c\u1ee7a ch\u00fang. Tuy nhi\u00ean, c\u1ea7n l\u01b0u \u00fd r\u1eb1ng c\u00e1c c\u00f4ng th\u1ee9c c\u00e1n m\u1ecfng kh\u00e1c nhau c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn nh\u1eefng c\u00e1ch gi\u1ea3i th\u00edch kh\u00e1c nhau v\u1ec1 vi\u1ec7c t\u0103ng tr\u1ecdng l\u01b0\u1ee3ng do kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc, nh\u1ea5n m\u1ea1nh s\u1ef1 c\u1ea7n thi\u1ebft ph\u1ea3i xem x\u00e9t c\u1ea9n th\u1eadn khi l\u1ef1a ch\u1ecdn t\u1ea5m v\u00e1n \u00e9p.<\/p>\n<p>C\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 th\u1eddi gian ng\u00e2m v\u00e0 nhi\u1ec7t \u0111\u1ed9 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc c\u1ee7a t\u1ea5m PCB. Kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m th\u1ea5p l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a t\u1ea5m PCB trong c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau.<\/p>\n<h2>\u0110o ph\u01b0\u01a1ng ph\u00e1p h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/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\/analyzing_water_absorption_techniques.jpg\" alt=\"ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt h\u1ea5p th\u1ee5 n\u01b0\u1edbc\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>\u0110o \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong t\u1ea5m PCB \u0111\u00f2i h\u1ecfi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh x\u00e1c \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u00f4ng qua c\u00e1c k\u1ef9 thu\u1eadt kh\u00e1c nhau, bao g\u1ed3m c\u1ea3 <strong>Ph\u01b0\u01a1ng Ph\u00e1p T\u0103ng C\u00e2n<\/strong>&#44; <strong>Ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch tr\u1ecdng l\u01b0\u1ee3ng<\/strong>, V\u00e0 <strong>Ph\u00e2n t\u00edch nhi\u1ec7t l\u01b0\u1ee3ng<\/strong>.<\/p>\n<p>M\u1ed7i ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cung c\u1ea5p m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn ri\u00eang bi\u1ec7t \u0111\u1ec3 \u0111\u1ecbnh l\u01b0\u1ee3ng \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc, cho ph\u00e9p \u0111\u00e1nh gi\u00e1 ch\u00ednh x\u00e1c hi\u1ec7u su\u1ea5t c\u1ee7a t\u1ea5m g\u1ed7.<\/p>\n<h3>Ph\u01b0\u01a1ng Ph\u00e1p T\u0103ng C\u00e2n<\/h3>\n<p>\u0110\u00e1nh gi\u00e1 ch\u00ednh x\u00e1c xu h\u01b0\u1edbng c\u1ee7a t\u1ea5m b\u1ea3ng m\u1ea1ch in (PCB) <strong>h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong> \u0111\u01b0\u1ee3c t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i b\u1edfi <strong>ph\u01b0\u01a1ng ph\u00e1p t\u0103ng c\u00e2n<\/strong>, m\u1ed9t k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 \u0111\u1ecbnh l\u01b0\u1ee3ng <strong>h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m<\/strong> trong nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y bao g\u1ed3m vi\u1ec7c t\u00ednh to\u00e1n ph\u1ea7n tr\u0103m t\u0103ng tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a t\u1ea5m PCB sau khi ti\u1ebfp x\u00fac v\u1edbi n\u01b0\u1edbc, cung c\u1ea5p th\u01b0\u1edbc \u0111o tr\u1ef1c ti\u1ebfp v\u1ec1 \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc.<\/p>\n<p>B\u1eb1ng c\u00e1ch theo d\u00f5i qu\u00e1 tr\u00ecnh t\u0103ng c\u00e2n theo th\u1eddi gian, ph\u01b0\u01a1ng ph\u00e1p t\u0103ng c\u00e2n gi\u00fap \u0111\u00e1nh gi\u00e1 <strong>kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m c\u1ee7a v\u1eadt li\u1ec7u<\/strong>, \u0111i\u1ec1u n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 s\u1ef1 ph\u00f9 h\u1ee3p c\u1ee7a t\u1ea5m g\u1ed7 \u0111\u1ed1i v\u1edbi <strong>\u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3<\/strong>. C\u00e1c k\u1ebft qu\u1ea3 t\u1eeb ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cung c\u1ea5p d\u1eef li\u1ec7u quan tr\u1ecdng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c c\u1ee7a t\u1ea5m g\u1ed7. <strong>hi\u1ec7u su\u1ea5t l\u00e2u d\u00e0i<\/strong> v\u00e0 \u0111\u1ed9 tin c\u1eady.<\/p>\n<p>V\u00ec vi\u1ec7c \u0111o t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong t\u1ea5m PCB l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u1ed9 tin c\u1eady n\u00ean ph\u01b0\u01a1ng ph\u00e1p t\u0103ng tr\u1ecdng l\u01b0\u1ee3ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a PCB. B\u1eb1ng c\u00e1ch \u0111\u1ecbnh l\u01b0\u1ee3ng ch\u00ednh x\u00e1c \u0111\u1ed9 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m, nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t v\u1ec1 <strong>l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u<\/strong>quy tr\u00ecnh thi\u1ebft k\u1ebf v\u00e0 s\u1ea3n xu\u1ea5t, cu\u1ed1i c\u00f9ng d\u1eabn \u0111\u1ebfn <strong>c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t s\u1ea3n ph\u1ea9m<\/strong> v\u00e0 s\u1ef1 h\u00e0i l\u00f2ng c\u1ee7a kh\u00e1ch h\u00e0ng.<\/p>\n<h3>Ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch tr\u1ecdng l\u01b0\u1ee3ng<\/h3>\n<p>M\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t \u0111\u1ec3 \u0111o <strong>h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong> trong t\u1ea5m PCB l\u00e0 <strong>ph\u00e2n t\u00edch tr\u1ecdng l\u1ef1c<\/strong>, cung c\u1ea5p m\u1ed9t <strong>\u0111\u00e1nh gi\u00e1 \u0111\u1ecbnh l\u01b0\u1ee3ng<\/strong> h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m th\u00f4ng qua c\u00e1c ph\u00e9p \u0111o tr\u1ecdng l\u01b0\u1ee3ng ch\u00ednh x\u00e1c.<\/p>\n<p>Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y bao g\u1ed3m vi\u1ec7c c\u00e2n t\u1ea5m g\u1ed7 tr\u01b0\u1edbc v\u00e0 sau khi ti\u1ebfp x\u00fac v\u1edbi n\u01b0\u1edbc, cho ph\u00e9p t\u00ednh to\u00e1n <strong>t\u0103ng c\u00e2n<\/strong> do h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m. Sau \u0111\u00f3, t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00e1ch chia m\u1ee9c t\u0103ng tr\u1ecdng l\u01b0\u1ee3ng cho tr\u1ecdng l\u01b0\u1ee3ng ban \u0111\u1ea7u c\u1ee7a t\u1ea5m g\u1ed7.<\/p>\n<p>Ph\u00e2n t\u00edch tr\u1ecdng l\u01b0\u1ee3ng cung c\u1ea5p d\u1eef li\u1ec7u \u0111\u1ecbnh l\u01b0\u1ee3ng v\u1ec1 l\u01b0\u1ee3ng \u0111\u1ed9 \u1ea9m m\u00e0 t\u1ea5m PCB h\u1ea5p th\u1ee5, cho ph\u00e9p \u0111\u00e1nh gi\u00e1 t\u00e1c \u0111\u1ed9ng c\u1ee7a s\u1ef1 h\u1ea5p th\u1ee5 n\u01b0\u1edbc \u0111\u1ed1i v\u1edbi c\u00e1c \u0111\u1eb7c t\u00ednh v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a t\u1ea5m laminate. D\u01b0\u1edbi s\u1ef1 ki\u1ec3m so\u00e1t <strong>\u00e1p su\u1ea5t \u1ea9m<\/strong>, t\u1ea5m g\u1ed7 \u0111\u01b0\u1ee3c ti\u1ebfp x\u00fac v\u1edbi n\u01b0\u1edbc v\u00e0 vi\u1ec7c \u0111o tr\u1ecdng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ec1u \u0111\u1eb7n.<\/p>\n<p>Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong vi\u1ec7c \u0111\u00e1nh gi\u00e1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a s\u1ef1 h\u1ea5p th\u1ee5 n\u01b0\u1edbc l\u00ean b\u1ec1 m\u1eb7t c\u1ee7a t\u1ea5m g\u1ed7. <strong>t\u00ednh ch\u1ea5t \u0111i\u1ec7n v\u00e0 c\u01a1 kh\u00ed<\/strong>. B\u1eb1ng c\u00e1ch cung c\u1ea5p d\u1eef li\u1ec7u ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady, ph\u00e2n t\u00edch tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 c\u00f3 gi\u00e1 tr\u1ecb trong vi\u1ec7c ph\u00e1t tri\u1ec3n c\u00e1c t\u1ea5m PCB v\u1edbi kh\u1ea3 n\u0103ng c\u1ea3i ti\u1ebfn <strong>ch\u1ed1ng \u1ea9m<\/strong>.<\/p>\n<h3>Ph\u00e2n t\u00edch nhi\u1ec7t l\u01b0\u1ee3ng<\/h3>\n<p>Ph\u00e2n t\u00edch nhi\u1ec7t tr\u1ecdng l\u01b0\u1ee3ng (TGA) cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ed5 sung cho ph\u00e2n t\u00edch tr\u1ecdng l\u01b0\u1ee3ng, cho ph\u00e9p \u0111\u00e1nh gi\u00e1 <strong>t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong> trong t\u1ea5m PCB d\u01b0\u1edbi <strong>\u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t<\/strong>. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y li\u00ean quan \u0111\u1ebfn vi\u1ec7c \u00e9p l\u1edbp PCB <strong>t\u0103ng nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t<\/strong> trong khi gi\u00e1m s\u00e1t <strong>thay \u0111\u1ed5i c\u00e2n n\u1eb7ng<\/strong>. Khi s\u1ef1 h\u1ea5p th\u1ee5 n\u01b0\u1edbc x\u1ea3y ra, n\u00f3 d\u1eabn \u0111\u1ebfn <strong>t\u0103ng tr\u1ecdng l\u01b0\u1ee3ng trong t\u1ea5m PCB<\/strong>, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh ch\u1ea5t v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a ch\u00fang.<\/p>\n<p>TGA cung c\u1ea5p nh\u1eefng hi\u1ec3u bi\u1ebft c\u00f3 gi\u00e1 tr\u1ecb v\u1ec1 <strong>h\u00e0nh vi h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m<\/strong> kh\u00e1c nhau <strong>c\u00f4ng th\u1ee9c c\u00e1n m\u1ecfng<\/strong>. B\u1eb1ng c\u00e1ch \u0111o ch\u00ednh x\u00e1c s\u1ef1 thay \u0111\u1ed5i tr\u1ecdng l\u01b0\u1ee3ng, <strong>d\u1eef li\u1ec7u TGA<\/strong> gi\u00fap hi\u1ec3u \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc c\u1ee7a t\u1ea5m PCB. Th\u00f4ng tin n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a t\u1ea5m PCB.<\/p>\n<p>C\u00e1c \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t trong TGA cho ph\u00e9p hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 qu\u00e1 tr\u00ecnh h\u1ea5p th\u1ee5 n\u01b0\u1edbc, cho ph\u00e9p x\u00e1c \u0111\u1ecbnh c\u00e1c c\u00f4ng th\u1ee9c c\u00e1n m\u1ecfng l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. B\u1eb1ng c\u00e1ch t\u1eadn d\u1ee5ng TGA, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 t\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf t\u1ea5m PCB c\u1ee7a h\u1ecd \u0111\u1ec3 gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng c\u1ee7a vi\u1ec7c h\u1ea5p th\u1ee5 n\u01b0\u1edbc, cu\u1ed1i c\u00f9ng l\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a s\u1ea3n ph\u1ea9m.<\/p>\n<h2>\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady c\u1ee7a linh ki\u1ec7n \u0111i\u1ec7n t\u1eed<\/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\/impact_of_humidity_on_reliability.jpg\" alt=\"\u1ea3nh h\u01b0\u1edfng c\u1ee7a \u0111\u1ed9 \u1ea9m \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>V\u1edbi s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a <strong>n\u01b0\u1edbc h\u1ea5p th\u1ee5<\/strong>, \u0111\u1ed9 tin c\u1eady c\u1ee7a c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed g\u1eafn tr\u00ean t\u1ea5m PCB c\u00f3 th\u1ec3 b\u1ecb t\u1ed5n h\u1ea1i nghi\u00eam tr\u1ecdng, d\u1eabn \u0111\u1ebfn <strong>th\u1ea5t b\u1ea1i s\u1edbm<\/strong> ho\u1eb7c <strong>s\u1ef1 xu\u1ed1ng c\u1ea5p c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng<\/strong>. \u0110i\u1ec1u n\u00e0y l\u00e0 do s\u1ef1 h\u1ea5p th\u1ee5 n\u01b0\u1edbc c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn m\u1ed9t lo\u1ea1t c\u00e1c <strong>t\u00e1c h\u1ea1i<\/strong>, bao g\u1ed3m:<\/p>\n<ul>\n<li>\u0102n m\u00f2n \u0111\u01b0\u1eddng d\u1eabn v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn d\u1eabn \u0111i\u1ec7n<\/li>\n<li><strong>S\u1ef1 t\u00e1ch l\u1edbp c\u1ee7a laminate<\/strong>, d\u1eabn \u0111\u1ebfn ch\u1eadp \u0111i\u1ec7n<\/li>\n<li>S\u1ef1 suy gi\u1ea3m kh\u1ea3 n\u0103ng kh\u00e1ng h\u00f3a ch\u1ea5t c\u1ee7a t\u1ea5m g\u1ed7, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho n\u01b0\u1edbc ti\u1ebfp t\u1ee5c x\u00e2m nh\u1eadp<\/li>\n<li>T\u0103ng nguy c\u01a1 di chuy\u1ec3n \u0111i\u1ec7n h\u00f3a<\/li>\n<li>Gi\u1ea3m <strong>d\u1eabn nhi\u1ec7t<\/strong>, d\u1eabn \u0111\u1ebfn qu\u00e1 nhi\u1ec7t v\u00e0 l\u00e0m suy gi\u1ea3m th\u00e0nh ph\u1ea7n h\u01a1n n\u1eefa<\/li>\n<\/ul>\n<p>T\u00e1c \u0111\u1ed9ng c\u1ee7a vi\u1ec7c h\u1ea5p th\u1ee5 n\u01b0\u1edbc \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady c\u1ee7a linh ki\u1ec7n \u0111i\u1ec7n t\u1eed c\u00f3 th\u1ec3 r\u1ea5t s\u00e2u r\u1ed9ng v\u00e0 c\u00f3 s\u1ee9c t\u00e0n ph\u00e1 l\u1edbn.<\/p>\n<p>Do \u0111\u00f3, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c t\u1ea5m PCB c\u00f3 t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc th\u1ea5p, do \u0111\u00f3 duy tr\u00ec \u0111\u01b0\u1ee3c c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1, \u0111i\u1ec7n v\u00e0 h\u00f3a h\u1ecdc c\u1ee7a ch\u00fang. B\u1eb1ng c\u00e1ch \u0111\u00f3, nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro h\u1ecfng h\u00f3c th\u00e0nh ph\u1ea7n s\u1edbm v\u00e0 \u0111\u1ea3m b\u1ea3o <strong>\u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i<\/strong> c\u1ee7a h\u1ec7 th\u1ed1ng \u0111i\u1ec7n t\u1eed c\u1ee7a h\u1ecd.<\/p>\n<h2>K\u1ef9 thu\u1eadt ph\u00e1t hi\u1ec7n s\u1ef1 x\u00e2m nh\u1eadp c\u1ee7a \u0111\u1ed9 \u1ea9m<\/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_moisture_intrusion_methods.jpg\" alt=\"x\u00e1c \u0111\u1ecbnh ph\u01b0\u01a1ng ph\u00e1p x\u00e2m nh\u1eadp \u0111\u1ed9 \u1ea9m\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>K\u1ef9 thu\u1eadt ph\u00e1t hi\u1ec7n s\u1ef1 x\u00e2m nh\u1eadp c\u1ee7a h\u01a1i \u1ea9m l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong c\u00e1c t\u1ea5m PCB. Hai ph\u01b0\u01a1ng ph\u00e1p n\u1ed5i b\u1eadt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n s\u1ef1 x\u00e2m nh\u1eadp c\u1ee7a h\u01a1i \u1ea9m l\u00e0 <strong>Ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch tr\u1ecdng l\u01b0\u1ee3ng<\/strong> v\u00e0 <strong>Ph\u01b0\u01a1ng ph\u00e1p d\u1ecbch chuy\u1ec3n thu\u1ed9c t\u00ednh \u0111i\u1ec7n<\/strong>.<\/p>\n<p>Nh\u1eefng k\u1ef9 thu\u1eadt n\u00e0y cho ph\u00e9p \u0111o l\u01b0\u1eddng ch\u00ednh x\u00e1c <strong>t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m<\/strong>, \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a PCB.<\/p>\n<h3>Ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch tr\u1ecdng l\u01b0\u1ee3ng<\/h3>\n<p>B\u1eb1ng c\u00e1ch theo d\u00f5i m\u1ee9c t\u0103ng tr\u1ecdng l\u01b0\u1ee3ng t\u0103ng d\u1ea7n c\u1ee7a c\u00e1c t\u1ea5m PCB ti\u1ebfp x\u00fac v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u00f3 \u0111\u1ed9 \u1ea9m \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, <strong>ph\u00e2n t\u00edch tr\u1ecdng l\u1ef1c<\/strong> cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n \u0111\u00e1ng tin c\u1eady \u0111\u1ec3 \u0111\u1ecbnh l\u01b0\u1ee3ng <strong>t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong>. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o \u0111\u1ed9 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m trong c\u00e1c t\u1ea5m PCB, v\u00ec n\u00f3 cho ph\u00e9p <strong>theo d\u00f5i c\u00e2n n\u1eb7ng ch\u00ednh x\u00e1c<\/strong> thay \u0111\u1ed5i theo th\u1eddi gian. D\u1eef li\u1ec7u thu \u0111\u01b0\u1ee3c t\u1eeb ph\u00e2n t\u00edch tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft trong vi\u1ec7c \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t c\u1ee7a t\u1ea5m c\u00e1n m\u1ecfng trong m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt.<\/p>\n<p>\u01afu \u0111i\u1ec3m c\u1ee7a ph\u00e2n t\u00edch tr\u1ecdng l\u01b0\u1ee3ng bao g\u1ed3m:<\/p>\n<ul>\n<li>\u0110\u1ed9 ch\u00ednh x\u00e1c cao trong vi\u1ec7c \u0111o t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/li>\n<li>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra kh\u00f4ng ph\u00e1 h\u1ee7y<\/li>\n<li>Kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n nh\u1eefng thay \u0111\u1ed5i tinh t\u1ebf trong t\u00ednh ch\u1ea5t c\u1ee7a t\u1ea5m laminate<\/li>\n<li><strong>Ti\u1ebft ki\u1ec7m chi ph\u00ed<\/strong> so v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u00e1t hi\u1ec7n \u0111\u1ed9 \u1ea9m kh\u00e1c<\/li>\n<li>Cung c\u1ea5p nh\u1eefng hi\u1ec3u bi\u1ebft c\u00f3 gi\u00e1 tr\u1ecb v\u1ec1 <strong>hi\u1ec7u su\u1ea5t c\u00e1n m\u1ecfng<\/strong> trong m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt<\/li>\n<\/ul>\n<h3>Thay \u0111\u1ed5i t\u00e0i s\u1ea3n \u0111i\u1ec7n<\/h3>\n<p>T\u00ednh ch\u1ea5t \u0111i\u1ec7n thay \u0111\u1ed5i theo <strong>T\u1ea5m PCB<\/strong>, \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi s\u1ef1 x\u00e2m nh\u1eadp c\u1ee7a h\u01a1i \u1ea9m, c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, khi\u1ebfn <strong>ph\u00e1t hi\u1ec7n k\u1ecbp th\u1eddi<\/strong> c\u1ea7n thi\u1ebft \u0111\u1ec3 ng\u0103n ng\u1eeba s\u1ef1 c\u1ed1.<\/p>\n<p>S\u1ef1 x\u00e2m nh\u1eadp c\u1ee7a h\u01a1i \u1ea9m c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i t\u00ednh ch\u1ea5t \u0111i\u1ec7n c\u1ee7a t\u1ea5m PCB, d\u1eabn \u0111\u1ebfn thay \u0111\u1ed5i \u0111i\u1ec7n dung, \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n v\u00e0 \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i. Nh\u1eefng thay \u0111\u1ed5i n\u00e0y c\u00f3 th\u1ec3 l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ee9c n\u0103ng c\u1ee7a c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed, d\u1eabn \u0111\u1ebfn ho\u1ea1t \u0111\u1ed9ng b\u1ecb l\u1ed7i ho\u1eb7c h\u1ecfng ho\u00e0n to\u00e0n.<\/p>\n<p>\u0110\u1ec3 gi\u1ea3m thi\u1ec3u nh\u1eefng r\u1ee7i ro n\u00e0y, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i ph\u00e1t hi\u1ec7n <strong>\u0111\u1ed9 \u1ea9m x\u00e2m nh\u1eadp<\/strong> v\u00e0 gi\u00e1m s\u00e1t <strong>s\u1ef1 thay \u0111\u1ed5i t\u00ednh ch\u1ea5t \u0111i\u1ec7n<\/strong> trong th\u1eddi gian th\u1ef1c. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u00f4ng qua c\u00e1c k\u1ef9 thu\u1eadt ph\u00e1t hi\u1ec7n s\u1ef1 x\u00e2m nh\u1eadp c\u1ee7a \u0111\u1ed9 \u1ea9m kh\u00e1c nhau, bao g\u1ed3m \u0111o c\u00e1c \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n nh\u01b0 tr\u1edf kh\u00e1ng, \u0111i\u1ec7n dung v\u00e0 \u0111i\u1ec7n tr\u1edf.<\/p>\n<p>B\u1eb1ng c\u00e1ch theo d\u00f5i c\u00e1c th\u00f4ng s\u1ed1 n\u00e0y, nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c l\u1ed7i ti\u1ec1m \u1ea9n v\u00e0 \u0111\u01b0a ra bi\u1ec7n ph\u00e1p kh\u1eafc ph\u1ee5c. <strong>bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba<\/strong> \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o <strong>\u0111\u1ed9 tin c\u1eady v\u00e0 \u0111\u1ed9 b\u1ec1n<\/strong> s\u1ea3n ph\u1ea9m c\u1ee7a h\u1ecd.<\/p>\n<p>Hi\u1ec3u \u0111\u01b0\u1ee3c s\u1ef1 thay \u0111\u1ed5i thu\u1ed9c t\u00ednh \u0111i\u1ec7n l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a t\u1ea5m PCB trong c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau.<\/p>\n<h2>Ti\u00eau ch\u00ed l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u 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\/criteria_for_selecting_pcb_materials.jpg\" alt=\"ti\u00eau ch\u00ed l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u pcb\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Khi l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u PCB, vi\u1ec7c \u0111\u00e1nh gi\u00e1 k\u1ef9 l\u01b0\u1ee1ng c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c nhau l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t cao nh\u1ea5t trong c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau. Hi\u1ec3u \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong c\u00e1c t\u1ea5m PCB l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c m\u00f4i tr\u01b0\u1eddng v\u00e0 duy tr\u00ec hi\u1ec7u su\u1ea5t cao nh\u1ea5t.<\/p>\n<p>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i, nh\u00e0 s\u1ea3n xu\u1ea5t ph\u1ea3i xem x\u00e9t c\u1ea9n th\u1eadn c\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh sau:<\/p>\n<ul>\n<li><strong>H\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i<\/strong>: \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 t\u00edn hi\u1ec7u v\u00e0 tr\u1edf kh\u00e1ng<\/li>\n<li><strong>D\u1eabn nhi\u1ec7t<\/strong>: \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng t\u1ea3n nhi\u1ec7t v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a linh ki\u1ec7n<\/li>\n<li><strong>T\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m<\/strong>: t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n v\u1eadt li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t \u0111i\u1ec7n<\/li>\n<li><strong>\u0110\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc<\/strong>: x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu \u00e1p l\u1ef1c v\u1eadt l\u00fd c\u1ee7a PCB<\/li>\n<li><strong>Kh\u00e1ng h\u00f3a ch\u1ea5t<\/strong>: \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u1ee7a v\u1eadt li\u1ec7u v\u1edbi c\u00e1c dung m\u00f4i v\u00e0 ch\u1ea5t t\u1ea9y r\u1eeda kh\u00e1c nhau<\/li>\n<\/ul>\n<h2>Quy tr\u00ecnh ki\u1ec3m tra \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/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\/testing_water_absorption_rates.jpg\" alt=\"ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Vi\u1ec7c \u0111o t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong t\u1ea5m PCB \u0111\u00f2i h\u1ecfi m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c ti\u00eau chu\u1ea9n h\u00f3a, v\u1edbi <strong>ASTM D 570-57T<\/strong> ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m l\u00e0 quy tr\u00ecnh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh t\u00ednh nh\u1ea1y c\u1ea3m c\u1ee7a v\u1eadt li\u1ec7u \u0111\u1ed1i v\u1edbi <strong>\u0111\u1ed9 \u1ea9m x\u00e2m nh\u1eadp<\/strong>. Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m n\u00e0y bao g\u1ed3m vi\u1ec7c \u0111i\u1ec1u h\u00f2a m\u1eabu th\u1eed trong m\u1ed9t <strong>m\u00f4i tr\u01b0\u1eddng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t<\/strong>, ti\u1ebfp theo l\u00e0 ng\u00e2m trong n\u01b0\u1edbc v\u00e0 \u0111o m\u1ee9c t\u0103ng c\u00e2n do h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m.<\/p>\n<p>Ph\u01b0\u01a1ng ph\u00e1p ASTM D 570-57T cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n \u0111\u00e1ng tin c\u1eady \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 <strong>\u0111\u1eb7c t\u00ednh h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m<\/strong> c\u1ee7a c\u00e1c c\u00f4ng th\u1ee9c t\u1ea5m m\u1ecfng kh\u00e1c nhau, \u0111i\u1ec1u n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec c\u00e1c t\u00ednh ch\u1ea5t c\u01a1, \u0111i\u1ec7n v\u00e0 h\u00f3a h\u1ecdc c\u1ee7a t\u1ea5m PCB. C\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 <strong>th\u1eddi gian ng\u00e2m<\/strong> v\u00e0 nhi\u1ec7t \u0111\u1ed9 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc v\u00e0 do \u0111\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t c\u1ea9n th\u1eadn trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m.<\/p>\n<h2>Hi\u1ec3u h\u00e0nh vi h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/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\/exploring_water_absorption_processes.jpg\" alt=\"kh\u00e1m ph\u00e1 qu\u00e1 tr\u00ecnh h\u1ea5p th\u1ee5 n\u01b0\u1edbc\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>C\u00e1c <strong>h\u00e0nh vi h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong> c\u1ee7a <strong>T\u1ea5m PCB<\/strong>, \u0111\u01b0\u1ee3c \u0111\u1eb7c tr\u01b0ng b\u1edfi t\u1ed1c \u0111\u1ed9 v\u00e0 m\u1ee9c \u0111\u1ed9 c\u1ee7a <strong>\u0111\u1ed9 \u1ea9m x\u00e2m nh\u1eadp<\/strong>, \u1ea3nh h\u01b0\u1edfng s\u00e2u s\u1eafc \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a ch\u00fang trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p kh\u00e1c nhau. Hi\u1ec3u \u0111\u01b0\u1ee3c h\u00e0nh vi n\u00e0y l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o <strong>\u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 tin c\u1eady<\/strong> c\u1ee7a t\u1ea5m PCB.<\/p>\n<p>C\u00e1c t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc c\u1ee7a t\u1ea5m PCB \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc c\u1ee7a ch\u00fang. C\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 <strong>th\u1eddi gian v\u00e0 nhi\u1ec7t \u0111\u1ed9 ng\u00e2m<\/strong> c\u00f3 th\u1ec3 c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u00e1ng ch\u00fa \u00fd \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc, d\u1eabn \u0111\u1ebfn nh\u1eefng c\u00e1ch gi\u1ea3i th\u00edch kh\u00e1c nhau v\u1ec1 <strong>t\u0103ng c\u00e2n<\/strong> do s\u1ef1 h\u1ea5p th\u1ee5 n\u01b0\u1edbc. Kh\u00e1c bi\u1ec7t <strong>c\u00f4ng th\u1ee9c c\u00e1n m\u1ecfng<\/strong> c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u00e0nh vi h\u1ea5p th\u1ee5 n\u01b0\u1edbc kh\u00e1c bi\u1ec7t.<\/p>\n<p>M\u1ed9t s\u1ed1 kh\u00eda c\u1ea1nh ch\u00ednh c\u1ee7a kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong t\u1ea5m PCB bao g\u1ed3m:<\/p>\n<ul>\n<li>\u1ea2nh h\u01b0\u1edfng c\u1ee7a s\u1ef1 h\u1ea5p th\u1ee5 n\u01b0\u1edbc \u0111\u1ebfn c\u00e1c t\u00ednh ch\u1ea5t c\u01a1, \u0111i\u1ec7n v\u00e0 h\u00f3a h\u1ecdc<\/li>\n<li>Vai tr\u00f2 c\u1ee7a th\u1eddi gian v\u00e0 nhi\u1ec7t \u0111\u1ed9 ng\u00e2m \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/li>\n<li>\u1ea2nh h\u01b0\u1edfng c\u1ee7a c\u00f4ng th\u1ee9c laminate \u0111\u1ebfn kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/li>\n<li>T\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c h\u1ea5p th\u1ee5 n\u01b0\u1edbc th\u1ea5p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 tin c\u1eady<\/li>\n<li>Vi\u1ec7c s\u1eed d\u1ee5ng <strong>ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ti\u00eau chu\u1ea9n h\u00f3a<\/strong>, ch\u1eb3ng h\u1ea1n nh\u01b0 ASTM D 570-57T, \u0111\u1ec3 \u0111o \u0111\u1eb7c t\u00ednh h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/li>\n<\/ul>\n<h2>Nh\u1eefng c\u00e2n nh\u1eafc v\u1ec1 thi\u1ebft k\u1ebf PCB \u0111\u1ed1i v\u1edbi \u0111\u1ed9 \u1ea9m<\/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\/designing_pcbs_for_moisture.jpg\" alt=\"thi\u1ebft k\u1ebf pcb ch\u1ed1ng \u1ea9m\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>C\u00e1c nh\u00e0 thi\u1ebft k\u1ebf PCB ph\u1ea3i xem x\u00e9t ti\u1ec1m n\u0103ng c\u1ee7a <strong>\u0111\u1ed9 \u1ea9m x\u00e2m nh\u1eadp<\/strong> v\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a n\u00f3 t\u1edbi <strong>hi\u1ec7u su\u1ea5t c\u00e1n m\u1ecfng<\/strong> khi ph\u00e1t tri\u1ec3n b\u1ed1 c\u1ee5c b\u1ea3ng v\u00e0 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u. C\u00e1c <strong>h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m<\/strong> t\u1ed1c \u0111\u1ed9 trong t\u1ea5m PCB c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady t\u1ed5ng th\u1ec3 c\u1ee7a b\u1ea3ng m\u1ea1ch in.<\/p>\n<p>\u0110\u1ec3 gi\u1ea3m thi\u1ec3u \u0111i\u1ec1u n\u00e0y, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c c\u00e2n nh\u1eafc v\u1ec1 thi\u1ebft k\u1ebf nh\u01b0: <strong>chia l\u01b0\u1edbi m\u1eb7t ph\u1eb3ng \u0111\u1ed3ng<\/strong> \u0111\u1ec3 h\u1ea1n ch\u1ebf s\u1ef1 di chuy\u1ec3n c\u1ee7a h\u01a1i \u1ea9m gi\u1eefa c\u00e1c l\u1edbp. \u0110i\u1ec1u n\u00e0y l\u00e0 c\u1ea7n thi\u1ebft v\u00ec kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc c\u1ee7a PCB c\u00f3 th\u1ec3 l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c t\u00ednh ch\u1ea5t c\u01a1, \u0111i\u1ec7n v\u00e0 h\u00f3a h\u1ecdc c\u1ea7n thi\u1ebft cho ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ch\u00fang.<\/p>\n<p>Th\u1eddi gian v\u00e0 nhi\u1ec7t \u0111\u1ed9 ng\u00e2m l\u00e0 <strong>y\u1ebfu t\u1ed1 quan tr\u1ecdng<\/strong> \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn <strong>t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong> c\u1ee7a t\u1ea5m PCB. Do \u0111\u00f3, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf n\u00ean l\u1ef1a ch\u1ecdn c\u1ea9n th\u1eadn v\u1eadt li\u1ec7u v\u00e0 b\u1ed1 c\u1ee5c thi\u1ebft k\u1ebf \u0111\u1ec3 gi\u1ea3m thi\u1ec3u s\u1ef1 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m. Kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m th\u1ea5p l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a PCB trong c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau.<\/p>\n<h2>T\u00ednh ch\u1ea5t v\u1eadt li\u1ec7u v\u00e0 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/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\/study_material_water_absorption.jpg\" alt=\"t\u00e0i li\u1ec7u nghi\u00ean c\u1ee9u kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Khi ki\u1ec3m tra c\u00e1c <strong>t\u00ednh ch\u1ea5t v\u1eadt ch\u1ea5t<\/strong> c\u1ee7a <strong>T\u1ea5m PCB<\/strong>, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i hi\u1ec3u c\u01a1 ch\u1ebf c\u1ee7a <strong>h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong>, v\u00ec c\u00e1c l\u1edbp v\u1eadt li\u1ec7u c\u00e1n m\u1ecfng kh\u00e1c nhau th\u1ec3 hi\u1ec7n m\u1ee9c \u0111\u1ed9 kh\u00e1c nhau c\u1ee7a <strong>h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m<\/strong>.<\/p>\n<p>T\u1ed1c \u0111\u1ed9 khu\u1ebfch t\u00e1n \u0111\u1ed9 \u1ea9m qua v\u1eadt li\u1ec7u laminate \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc t\u1ed5ng th\u1ec3. B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf v\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u gi\u1ea3m thi\u1ec3u kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a PCB trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng.<\/p>\n<h3>C\u01a1 ch\u1ebf h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/h3>\n<p>C\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u, ch\u1eb3ng h\u1ea1n nh\u01b0 lo\u1ea1i nh\u1ef1a v\u00e0 h\u00e0m l\u01b0\u1ee3ng s\u1ee3i, \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn c\u01a1 ch\u1ebf h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong c\u00e1c l\u1edbp PCB, d\u1eabn \u0111\u1ebfn m\u1ee9c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc kh\u00e1c nhau. T\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong t\u1ea5m PCB l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng quy\u1ebft \u0111\u1ecbnh hi\u1ec7u su\u1ea5t c\u1ee7a ch\u00fang trong m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt.<\/p>\n<p>C\u01a1 ch\u1ebf h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong t\u1ea5m PCB c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c quy cho c\u00e1c y\u1ebfu t\u1ed1 sau:<\/p>\n<ul>\n<li><strong>Khu\u1ebfch t\u00e1n qua n\u1ec1n nh\u1ef1a<\/strong>: C\u00e1c ph\u00e2n t\u1eed n\u01b0\u1edbc x\u00e2m nh\u1eadp v\u00e0o nh\u1ef1a, d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u1ed3ng l\u00ean v\u00e0 xu\u1ed1ng c\u1ea5p c\u1ee7a t\u1ea5m laminate.<\/li>\n<li><strong>Ho\u1ea1t \u0111\u1ed9ng mao d\u1eabn d\u1ecdc theo c\u1ed1t s\u1ee3i<\/strong>: N\u01b0\u1edbc th\u1ea5m v\u00e0o c\u00e1c khe h\u1edf gi\u1eefa c\u00e1c s\u1ee3i, g\u00e2y ra s\u1ef1 ph\u00e2n t\u00e1ch v\u00e0 thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc.<\/li>\n<li><strong>B\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n<\/strong>: Lo\u1ea1i ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng ho\u1eb7c c\u1ea3n tr\u1edf s\u1ef1 h\u1ea5p th\u1ee5 n\u01b0\u1edbc, t\u00f9y thu\u1ed9c v\u00e0o t\u00ednh ch\u1ea5t k\u1ef5 n\u01b0\u1edbc ho\u1eb7c \u01b0a n\u01b0\u1edbc c\u1ee7a n\u00f3.<\/li>\n<li><strong>H\u00e0m l\u01b0\u1ee3ng v\u00e0 \u0111\u1ecbnh h\u01b0\u1edbng ch\u1ea5t x\u01a1<\/strong>: Lo\u1ea1i v\u00e0 h\u01b0\u1edbng c\u1ee7a s\u1ee3i c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 v\u00e0 khu\u1ebfch t\u00e1n n\u01b0\u1edbc.<\/li>\n<li><strong>T\u01b0\u01a1ng t\u00e1c b\u1ec1 m\u1eb7t<\/strong>: S\u1ef1 t\u01b0\u01a1ng t\u00e1c gi\u1eefa nh\u1ef1a v\u00e0 s\u1ee3i c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u01a1 ch\u1ebf h\u1ea5p th\u1ee5 n\u01b0\u1edbc, d\u1eabn \u0111\u1ebfn m\u1ee9c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc kh\u00e1c nhau.<\/li>\n<\/ul>\n<p>Hi\u1ec3u \u0111\u01b0\u1ee3c c\u00e1c c\u01a1 ch\u1ebf h\u1ea5p th\u1ee5 n\u01b0\u1edbc n\u00e0y l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 thi\u1ebft k\u1ebf c\u00e1c t\u1ea5m PCB c\u00f3 t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc t\u1ed1i \u01b0u, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady trong m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt.<\/p>\n<h3>C\u00e1c l\u1edbp v\u1eadt li\u1ec7u laminate<\/h3>\n<p>Ph\u1ea1m vi \u0111a d\u1ea1ng c\u1ee7a <strong>l\u1edbp v\u1eadt li\u1ec7u laminate<\/strong>, m\u1ed7i lo\u1ea1i c\u00f3 th\u00e0nh ph\u1ea7n \u0111\u1ed9c \u0111\u00e1o, th\u1ec3 hi\u1ec7n s\u1ef1 kh\u00e1c bi\u1ec7t <strong>\u0111\u1eb7c t\u00ednh h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong> \u0111i\u1ec1u \u0111\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn hi\u1ec7u su\u1ea5t PCB. C\u00e1c <strong>t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong> c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u n\u00e0y kh\u00e1c nhau \u0111\u00e1ng k\u1ec3, t\u00f9y thu\u1ed9c v\u00e0o th\u00e0nh ph\u1ea7n c\u1ee7a ch\u00fang.<\/p>\n<p>V\u00ed d\u1ee5, <strong>T\u1ea5m FR-4<\/strong>, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong PCB, c\u00f3 t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc dao \u0111\u1ed9ng t\u1eeb 0,15% \u0111\u1ebfn 0,17% sau 24 gi\u1edd <strong>ng\u00e2m<\/strong>. Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u c\u00e1n m\u1ecfng kh\u00e1c, ch\u1eb3ng h\u1ea1n nh\u01b0 FR-3 v\u00e0 CEM-1, c\u00f3 t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc kh\u00e1c nhau do th\u00e0nh ph\u1ea7n ri\u00eang bi\u1ec7t c\u1ee7a ch\u00fang.<\/p>\n<p>Hi\u1ec3u \u0111\u01b0\u1ee3c \u0111\u1eb7c t\u00ednh h\u1ea5p th\u1ee5 n\u01b0\u1edbc c\u1ee7a v\u1eadt li\u1ec7u laminate l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 thi\u1ebft k\u1ebf <strong>PCB ch\u1ed1ng \u1ea9m<\/strong>. T\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc cao trong t\u1ea5m m\u1ecfng c\u00f3 th\u1ec3 l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 v\u00e0 \u0111i\u1ec7n, cu\u1ed1i c\u00f9ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a PCB. C\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u c\u00e1n m\u1ecfng kh\u00e1c nhau c\u00f3 \u0111\u1eb7c t\u00ednh h\u1ea5p th\u1ee5 n\u01b0\u1edbc c\u1ee5 th\u1ec3, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 ph\u00f9 h\u1ee3p c\u1ee7a ch\u00fang \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng PCB \u0111a d\u1ea1ng.<\/p>\n<h3>T\u1ef7 l\u1ec7 khu\u1ebfch t\u00e1n \u0111\u1ed9 \u1ea9m<\/h3>\n<p>Ngo\u00e0i s\u1ef1 kh\u00e1c bi\u1ec7t c\u1ee7a h\u1ecd <strong>t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong>&#44; <strong>v\u1eadt li\u1ec7u c\u00e1n m\u1ecfng<\/strong> tr\u01b0ng b\u00e0y \u0111\u1ed9c \u0111\u00e1o <strong>t\u1ed1c \u0111\u1ed9 khu\u1ebfch t\u00e1n \u0111\u1ed9 \u1ea9m<\/strong> \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u00f3 <strong>Hi\u1ec7u su\u1ea5t PCB<\/strong>. T\u1ed1c \u0111\u1ed9 khu\u1ebfch t\u00e1n h\u01a1i \u1ea9m qua v\u1eadt li\u1ec7u nhi\u1ec1u l\u1edbp c\u00f3 th\u1ec3 c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn \u0111\u1ed9 \u1ea9m c\u1ee7a n\u00f3. <strong>t\u00ednh ch\u1ea5t \u0111i\u1ec7n v\u00e0 c\u01a1 kh\u00ed<\/strong>. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng trong c\u00e1c \u1ee9ng d\u1ee5ng m\u00e0 PCB ti\u1ebfp x\u00fac v\u1edbi <strong>m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt ho\u1eb7c \u1ea9m \u01b0\u1edbt<\/strong>.<\/p>\n<p>T\u1ed1c \u0111\u1ed9 khu\u1ebfch t\u00e1n \u0111\u1ed9 \u1ea9m kh\u00e1c nhau gi\u1eefa c\u00e1c v\u1eadt li\u1ec7u c\u00e1n m\u1ecfng v\u00e0 hi\u1ec3u \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 n\u00e0y l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p cho m\u1ed9t \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. C\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 th\u1eddi gian ng\u00e2m, nhi\u1ec7t \u0111\u1ed9 v\u00e0 <strong>t\u00ednh ch\u1ea5t v\u1eadt ch\u1ea5t<\/strong> \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 khu\u1ebfch t\u00e1n \u0111\u1ed9 \u1ea9m.<\/p>\n<p>M\u1ed9t s\u1ed1 kh\u00eda c\u1ea1nh ch\u00ednh c\u1ee7a t\u1ed1c \u0111\u1ed9 khu\u1ebfch t\u00e1n \u0111\u1ed9 \u1ea9m trong t\u1ea5m PCB bao g\u1ed3m:<\/p>\n<ul>\n<li>T\u1ed1c \u0111\u1ed9 khu\u1ebfch t\u00e1n h\u01a1i \u1ea9m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh ch\u1ea5t c\u00e1ch \u0111i\u1ec7n c\u1ee7a v\u1eadt li\u1ec7u<\/li>\n<li>S\u1ef1 khu\u1ebfch t\u00e1n \u0111\u1ed9 \u1ea9m c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e2n t\u00e1ch, l\u00e0m gi\u1ea3m t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a v\u1eadt li\u1ec7u<\/li>\n<li>T\u1ed1c \u0111\u1ed9 khu\u1ebfch t\u00e1n \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh nh\u1ea1y c\u1ea3m c\u1ee7a v\u1eadt li\u1ec7u v\u1edbi s\u1ef1 \u0103n m\u00f2n<\/li>\n<li>C\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1eadt \u0111\u1ed9 v\u00e0 \u0111\u1ed9 x\u1ed1p, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 khu\u1ebfch t\u00e1n \u0111\u1ed9 \u1ea9m<\/li>\n<li><strong>M\u1ee9c nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 \u1ea9m<\/strong> \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 khu\u1ebfch t\u00e1n<\/li>\n<\/ul>\n<h2>D\u1ee5ng c\u1ee5 \u0111o t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/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\/water_absorption_rate_testing.jpg\" alt=\"ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>\u0110\u1eb7c t\u00ednh h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong t\u1ea5m PCB ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 \u0111o l\u01b0\u1eddng ch\u00ednh x\u00e1c c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n ch\u00ednh x\u00e1c nh\u1eefng thay \u0111\u1ed5i nh\u1ecf v\u1ec1 tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc. Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ASTM D570-57T th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong c\u00e1c t\u1ea5m PCB. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y bao g\u1ed3m vi\u1ec7c ng\u00e2m t\u1ea5m g\u1ed7 v\u00e0o n\u01b0\u1edbc v\u00e0 \u0111o tr\u1ecdng l\u01b0\u1ee3ng t\u0103ng l\u00ean theo th\u1eddi gian. C\u00f4ng th\u1ee9c c\u00e1n m\u00e0ng c\u1ee5 th\u1ec3, th\u1eddi gian ng\u00e2m v\u00e0 nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u1ebft qu\u1ea3 \u0111o.<\/p>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: center\"><strong>D\u1ee5ng c\u1ee5 \u0111o l\u01b0\u1eddng<\/strong><\/th>\n<th style=\"text-align: center\"><strong>S\u1ef1 mi\u00eau t\u1ea3<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: center\">ASTM D570-57T<\/td>\n<td style=\"text-align: center\">Ph\u01b0\u01a1ng ph\u00e1p th\u1eed ti\u00eau chu\u1ea9n v\u1ec1 \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc c\u1ee7a nh\u1ef1a<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">Ph\u00e2n t\u00edch tr\u1ecdng l\u1ef1c<\/td>\n<td style=\"text-align: center\">\u0110o tr\u1ecdng l\u01b0\u1ee3ng t\u0103ng l\u00ean do h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">Ph\u00e2n t\u00edch th\u1ee9 nguy\u00ean<\/td>\n<td style=\"text-align: center\">\u0110o l\u01b0\u1eddng s\u1ef1 thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc c\u1ee7a t\u1ea5m laminate<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">Bu\u1ed3ng m\u00f4i tr\u01b0\u1eddng<\/td>\n<td style=\"text-align: center\">Ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 \u1ea9m \u0111\u1ec3 \u0111o ch\u00ednh x\u00e1c<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">\u0110\u0103ng nh\u1eadp d\u1eef li\u1ec7u<\/td>\n<td style=\"text-align: center\">Ghi l\u1ea1i s\u1ef1 thay \u0111\u1ed5i tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 k\u00edch th\u01b0\u1edbc theo th\u1eddi gian<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Vi\u1ec7c \u0111o ch\u00ednh x\u00e1c t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i c\u1ee7a t\u1ea5m PCB. Khi c\u00e1c t\u1ea5m PCB h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m khi ch\u00fang \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i, n\u00f3 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1, \u0111i\u1ec7n v\u00e0 h\u00f3a h\u1ecdc b\u1ecb t\u1ed5n h\u1ea1i. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 \u0111o l\u01b0\u1eddng ch\u00ednh x\u00e1c, nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 t\u1ed1i \u01b0u h\u00f3a c\u00f4ng th\u1ee9c c\u00e1n m\u1ecfng v\u00e0 \u0111i\u1ec1u ki\u1ec7n x\u1eed l\u00fd \u0111\u1ec3 gi\u1ea3m thi\u1ec3u t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc, \u0111\u1ea3m b\u1ea3o PCB hi\u1ec7u su\u1ea5t cao.<\/p>\n<h2>\u0110\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc 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\/water_absorption_in_pcbs.jpg\" alt=\"h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong pcbs\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>\u0110\u00e1nh gi\u00e1 ch\u00ednh x\u00e1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong PCB l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t l\u00e2u d\u00e0i c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n quan tr\u1ecdng n\u00e0y. S\u1ef1 h\u1ea5p th\u1ee5 n\u01b0\u1edbc c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn c\u00e1c t\u00ednh ch\u1ea5t c\u01a1, \u0111i\u1ec7n v\u00e0 h\u00f3a h\u1ecdc c\u1ee7a t\u1ea5m PCB, do \u0111\u00f3 vi\u1ec7c \u0111o l\u01b0\u1eddng v\u00e0 ki\u1ec3m so\u00e1t th\u00f4ng s\u1ed1 n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/p>\n<p>\u0110\u1ec3 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc c\u1ee7a PCB, m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 ph\u1ea3i \u0111\u01b0\u1ee3c xem x\u00e9t:<\/p>\n<ul>\n<li><strong>Th\u1eddi gian v\u00e0 nhi\u1ec7t \u0111\u1ed9 ng\u00e2m<\/strong>: Nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc c\u1ee7a t\u1ea5m PCB.<\/li>\n<li><strong>C\u00f4ng th\u1ee9c laminate<\/strong>: C\u00e1c c\u00f4ng th\u1ee9c kh\u00e1c nhau c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn nh\u1eefng c\u00e1ch gi\u1ea3i th\u00edch kh\u00e1c nhau v\u1ec1 vi\u1ec7c t\u0103ng c\u00e2n do h\u1ea5p th\u1ee5 n\u01b0\u1edbc.<\/li>\n<li><strong>Ti\u1ebfp x\u00fac v\u1edbi \u0111\u1ed9 \u1ea9m<\/strong>: PCB d\u1ec5 b\u1ecb \u1ea9m khi \u0111\u00f3ng g\u00f3i, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a ch\u00fang.<\/li>\n<li><strong>Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ASTM D 570-57T<\/strong>: Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ti\u00eau chu\u1ea9n h\u00f3a n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong c\u00e1c t\u1ea5m PCB.<\/li>\n<li><strong>H\u1ea5p th\u1ee5 n\u01b0\u1edbc th\u1ea5p<\/strong>: \u0110i\u1ec1u n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a t\u1ea5m PCB trong c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau.<\/li>\n<\/ul>\n<h2>Chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o v\u1ec7 \u0111\u1ed9 \u1ea9m cho 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\/pcb_moisture_protection_methods.jpg\" alt=\"ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 \u0111\u1ed9 \u1ea9m pcb\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Nh\u1eefng bi\u1ec7n ph\u00e1p n\u00e0o c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ec3 b\u1ea3o v\u1ec7 PCB kh\u1ecfi t\u00e1c \u0111\u1ed9ng b\u1ea5t l\u1ee3i c\u1ee7a \u0111\u1ed9 \u1ea9m v\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 nh\u1eefng chi\u1ebfn l\u01b0\u1ee3c n\u00e0y gi\u1ea3m thi\u1ec3u r\u1ee7i ro li\u00ean quan \u0111\u1ebfn s\u1ef1 h\u1ea5p th\u1ee5 n\u01b0\u1edbc?<\/p>\n<p>Chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o v\u1ec7 \u0111\u1ed9 \u1ea9m cho PCB l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ng\u0103n ng\u1eeba <strong>ch\u1eadp \u0111i\u1ec7n<\/strong> v\u00e0 \u0103n m\u00f2n, \u0111\u1ea3m b\u1ea3o <strong>\u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t l\u00e2u d\u00e0i<\/strong>.<\/p>\n<p>V\u1eadt li\u1ec7u ch\u1ed1ng \u1ea9m v\u00e0 k\u1ef9 thu\u1eadt b\u1ecbt k\u00edn th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 <strong>b\u1ea3o v\u1ec7 PCB kh\u1ecfi s\u1ef1 x\u00e2m nh\u1eadp c\u1ee7a h\u01a1i \u1ea9m<\/strong>. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c chi\u1ebfn l\u01b0\u1ee3c n\u00e0y, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t PCB c\u00f3 th\u1ec3 <strong>gi\u1ea3m thi\u1ec3u nh\u1eefng r\u1ee7i ro li\u00ean quan<\/strong> v\u1edbi m\u1ee9c cao <strong>t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong>, c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc v\u00e0 suy gi\u1ea3m \u0111\u1eb7c t\u00ednh c\u00e1ch nhi\u1ec7t.<\/p>\n<p>B\u1ea3o v\u1ec7 \u0111\u1ed9 \u1ea9m th\u00edch h\u1ee3p l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 ng\u0103n ng\u1eeba \u0111o\u1ea3n m\u1ea1ch v\u00e0 \u0103n m\u00f2n \u0111i\u1ec7n, \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady c\u1ee7a PCB trong c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau.<\/p>\n<p>Hi\u1ec7u qu\u1ea3 <strong>chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o v\u1ec7 \u0111\u1ed9 \u1ea9m<\/strong> li\u00ean quan \u0111\u1ebfn s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u, <strong>c\u00e2n nh\u1eafc thi\u1ebft k\u1ebf<\/strong>, v\u00e0 c\u00e1c qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t. B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong c\u00e1c t\u1ea5m PCB, nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 ph\u00e1t tri\u1ec3n c\u00e1c chi\u1ebfn l\u01b0\u1ee3c c\u00f3 m\u1ee5c ti\u00eau nh\u1eb1m gi\u1ea3m thi\u1ec3u r\u1ee7i ro li\u00ean quan \u0111\u1ebfn vi\u1ec7c ti\u1ebfp x\u00fac v\u1edbi \u0111\u1ed9 \u1ea9m.<\/p>\n<h2>Ti\u00eau chu\u1ea9n IPC v\u1ec1 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/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\/water_absorption_in_ipc.jpg\" alt=\"h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong ipc\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ea3ng m\u1ea1ch in (PCB) trong c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau, h\u00e3y tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n <strong>ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p<\/strong> kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong c\u00e1c t\u1ea5m PCB l\u00e0 r\u1ea5t quan tr\u1ecdng, v\u00e0 <strong>Ti\u00eau chu\u1ea9n IPC<\/strong> cung c\u1ea5p m\u1ed9t khu\u00f4n kh\u1ed5 \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 v\u00e0 ki\u1ec3m so\u00e1t <strong>t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong>.<\/p>\n<p>Ti\u00eau chu\u1ea9n IPC quy \u0111\u1ecbnh t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ed1i v\u1edbi t\u1ea5m PCB, \u0111\u1ea3m b\u1ea3o ch\u00fang \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee7a ng\u00e0nh. \u0110\u1ec1 c\u01b0\u01a1ng ti\u00eau chu\u1ea9n <strong>ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m<\/strong> \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1eb7c t\u00ednh h\u1ea5p th\u1ee5 n\u01b0\u1edbc, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn <strong>hi\u1ec7u su\u1ea5t c\u01a1 v\u00e0 \u0111i\u1ec7n<\/strong> c\u1ee7a t\u1ea5m PCB. Vi\u1ec7c tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n IPC l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft cho <strong>ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng<\/strong> trong s\u1ea3n xu\u1ea5t t\u1ea5m PCB.<\/p>\n<p>C\u00e1c kh\u00eda c\u1ea1nh ch\u00ednh c\u1ee7a ti\u00eau chu\u1ea9n IPC v\u1ec1 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc bao g\u1ed3m:<\/p>\n<ul>\n<li>X\u00e1c \u0111\u1ecbnh t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ed1i v\u1edbi t\u1ea5m PCB<\/li>\n<li>Ph\u00e1c th\u1ea3o c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1eb7c t\u00ednh h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/li>\n<li>\u0110\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 c\u00e1c y\u00eau c\u1ea7u c\u1ee7a ng\u00e0nh<\/li>\n<li>T\u00e1c \u0111\u1ed9ng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u01a1 v\u00e0 \u0111i\u1ec7n c\u1ee7a t\u1ea5m PCB<\/li>\n<li>Cung c\u1ea5p khu\u00f4n kh\u1ed5 \u0111\u1ec3 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng trong s\u1ea3n xu\u1ea5t t\u1ea5m PCB<\/li>\n<\/ul>\n<h2>N\u00e2ng cao \u0111\u1ed9 tin c\u1eady c\u1ee7a PCB b\u1eb1ng th\u1eed nghi\u1ec7m h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/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\/improving_pcb_reliability_testing.jpg\" alt=\"c\u1ea3i thi\u1ec7n ki\u1ec3m tra \u0111\u1ed9 tin c\u1eady pcb\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>N\u00e2ng cao \u0111\u1ed9 tin c\u1eady c\u1ee7a PCB tr\u1edf th\u00e0nh m\u1ed1i quan t\u00e2m quan tr\u1ecdng khi <strong>th\u1eed nghi\u1ec7m h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong> ti\u1ebft l\u1ed9 nh\u1eefng l\u1ed7 h\u1ed5ng c\u1ee7a t\u1ea5m g\u1ed7 \u0111\u1ed1i v\u1edbi c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn \u0111\u1ed9 \u1ea9m.<\/p>\n<p>C\u00e1c <strong>Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ASTM D 570-57T<\/strong> cung c\u1ea5p m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn ti\u00eau chu\u1ea9n h\u00f3a \u0111\u1ec3 \u0111o l\u01b0\u1eddng <strong>t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong>, \u0111i\u1ec1u n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a PCB.<\/p>\n<p>S\u1ef1 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc, \u0111i\u1ec7n v\u00e0 h\u00f3a h\u1ecdc c\u1ee7a t\u1ea5m PCB, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i hi\u1ec3u t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc.<\/p>\n<p>C\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 <strong>th\u1eddi gian ng\u00e2m<\/strong> v\u00e0 nhi\u1ec7t \u0111\u1ed9 c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn <strong>\u0111\u1eb7c t\u00ednh h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong> c\u1ee7a t\u1ea5m PCB v\u00e0 t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc th\u1ea5p l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y.<\/p>\n<p>B\u1eb1ng c\u00e1ch ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc, nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c l\u1ed7 h\u1ed5ng v\u00e0 t\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf c\u1ee7a m\u00ecnh \u0111\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro <strong>s\u1ef1 c\u1ed1 li\u00ean quan \u0111\u1ebfn \u0111\u1ed9 \u1ea9m<\/strong>.<\/p>\n<p>B\u1eb1ng c\u00e1ch \u0111\u00f3, h\u1ecd c\u00f3 th\u1ec3 n\u00e2ng cao \u0111\u1ed9 tin c\u1eady c\u1ee7a PCB, gi\u1ea3m kh\u1ea3 n\u0103ng h\u1ecfng h\u00f3c s\u1edbm v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t cao nh\u1ea5t.<\/p>\n<h2>C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111o \u0111\u1ed9 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m?<\/h3>\n<p>\u0110\u1ec3 \u0111o ch\u00ednh x\u00e1c \u0111\u1ed9 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m, <strong>m\u00f4i tr\u01b0\u1eddng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t<\/strong> l\u00e0 quan tr\u1ecdng. S\u1eed d\u1ee5ng m\u1ed9t <strong>ph\u01b0\u01a1ng ph\u00e1p c\u00e2n ch\u00ednh x\u00e1c<\/strong>, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e2n ph\u00e2n t\u00edch, \u0111\u1ec3 \u0111\u1ecbnh l\u01b0\u1ee3ng m\u1ee9c t\u0103ng c\u00e2n.<\/p>\n<p>Duy tr\u00ec c\u00e1c \u0111i\u1ec1u ki\u1ec7n ng\u00e2m nh\u1ea5t qu\u00e1n, bao g\u1ed3m nhi\u1ec7t \u0111\u1ed9 v\u00e0 th\u1eddi gian, \u0111\u1ec3 gi\u1ea3m thi\u1ec3u s\u1ef1 bi\u1ebfn \u0111\u1ed5i. ASTM D 570-57T cung c\u1ea5p m\u1ed9t <strong>giao th\u1ee9c chu\u1ea9n h\u00f3a<\/strong> \u0111\u1ec3 \u0111o \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc, bao g\u1ed3m vi\u1ec7c ng\u00e2m v\u1eadt li\u1ec7u v\u00e0o n\u01b0\u1edbc c\u1ea5t \u1edf nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, sau \u0111\u00f3 c\u00e2n \u0111\u1ecbnh k\u1ef3 \u0111\u1ec3 t\u00ednh ph\u1ea7n tr\u0103m t\u0103ng tr\u1ecdng.<\/p>\n<h3>S\u1ef1 h\u1ea5p th\u1ee5 c\u1ee7a FR-4 trong n\u01b0\u1edbc l\u00e0 g\u00ec?<\/h3>\n<p>S\u1ef1 h\u1ea5p th\u1ee5 c\u1ee7a <strong>FR-4<\/strong> trong n\u01b0\u1edbc l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 quan tr\u1ecdng trong vi\u1ec7c duy tr\u00ec hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a PCB. FR-4, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i <strong>T\u1ea5m PCB<\/strong>, th\u1ec3 hi\u1ec7n m\u1ed9t <strong>t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong> kho\u1ea3ng 0,15% \u0111\u1ebfn 0,2% t\u00ednh theo tr\u1ecdng l\u01b0\u1ee3ng.<\/p>\n<p>S\u1ef1 h\u1ea5p th\u1ee5 n\u00e0y x\u1ea3y ra ch\u1ee7 y\u1ebfu th\u00f4ng qua c\u00e1c c\u1ea1nh v\u00e0 ph\u1ea7n c\u1eaft l\u1ed9 ra ngo\u00e0i, d\u1eabn \u0111\u1ebfn nh\u1eefng thay \u0111\u1ed5i v\u1ec1 t\u00ednh ch\u1ea5t \u0111i\u1ec7n v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc. Hi\u1ec3u h\u00e0nh vi h\u1ea5p th\u1ee5 n\u00e0y l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf PCB v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau.<\/p>\n<h3>M\u1ee9c \u0111\u1ed9 nh\u1ea1y c\u1ea3m v\u1edbi \u0111\u1ed9 \u1ea9m c\u1ee7a Pcb l\u00e0 g\u00ec?<\/h3>\n<p>C\u00e2u h\u1ecfi mu\u00f4n thu\u1edf: c\u00e1i g\u00ec l\u00e0 <strong>m\u1ee9c \u0111\u1ed9 nh\u1ea1y c\u1ea3m v\u1edbi \u0111\u1ed9 \u1ea9m<\/strong> c\u1ee7a m\u1ed9t PCB?<\/p>\n<p>PCB qu\u00fd gi\u00e1 c\u1ee7a ch\u00fang ta kh\u00f4ng ph\u1ea3i l\u00e0 nh\u1eefng b\u00f4ng hoa m\u1ecfng manh s\u1ebd h\u00e9o khi g\u1eb7p \u1ea9m. Than \u00f4i, h\u1ecd l\u00e0m v\u1eady.<\/p>\n<p>Tr\u00ean th\u1ef1c t\u1ebf, M\u1ee9c \u0111\u1ed9 nh\u1ea1y \u1ea9m (MSL) c\u1ee7a PCB x\u00e1c \u0111\u1ecbnh n\u00f3 <strong>d\u1ec5 b\u1ecb t\u1ed5n th\u01b0\u01a1ng do \u0111\u1ed9 \u1ea9m<\/strong>. Trong ph\u1ea1m vi t\u1eeb 1 \u0111\u1ebfn 6, x\u1ebfp h\u1ea1ng MSL cao h\u01a1n cho th\u1ea5y \u0111\u1ed9 nh\u1ea1y cao h\u01a1n, \u0111\u00f2i h\u1ecfi <strong>x\u1eed l\u00fd v\u00e0 l\u01b0u tr\u1eef nghi\u00eam ng\u1eb7t<\/strong> \u0111\u1ec3 ng\u0103n ch\u1eb7n nh\u1eefng th\u1ea5t b\u1ea1i.<\/p>\n<p>Hi\u1ec3u c\u00e1c y\u00eau c\u1ea7u c\u1ee7a MSL l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o <strong>Ch\u1ea5t l\u01b0\u1ee3ng l\u1eafp r\u00e1p PCB<\/strong> v\u00e0 tu\u1ed5i th\u1ecd.<\/p>\n<h3>C\u00f4ng th\u1ee9c h\u1ea5p th\u1ee5 n\u01b0\u1edbc l\u00e0 g\u00ec?<\/h3>\n<p>C\u00f4ng th\u1ee9c cho <strong>h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/strong> l\u00e0 m\u1ed9t t\u00ednh to\u00e1n quan tr\u1ecdng trong vi\u1ec7c \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 nh\u1ea1y c\u1ea3m c\u1ee7a v\u1eadt li\u1ec7u v\u1edbi \u0111\u1ed9 \u1ea9m.<\/p>\n<p>C\u00f4ng th\u1ee9c l\u00e0:<\/p>\n<p>\u0110\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc (%) = [(Tr\u1ecdng l\u01b0\u1ee3ng \u01b0\u1edbt \u2013 Tr\u1ecdng l\u01b0\u1ee3ng kh\u00f4) \/ Tr\u1ecdng l\u01b0\u1ee3ng kh\u00f4] x 100.<\/p>\n<p>T\u00ednh to\u00e1n n\u00e0y x\u00e1c \u0111\u1ecbnh ph\u1ea7n tr\u0103m t\u0103ng tr\u1ecdng l\u01b0\u1ee3ng do h\u1ea5p th\u1ee5 n\u01b0\u1edbc, cung c\u1ea5p th\u01b0\u1edbc \u0111o ch\u00ednh x\u00e1c v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c c\u1ee7a v\u1eadt li\u1ec7u. <strong>\u0111\u1ed9 nh\u1ea1y \u1ea9m<\/strong>.<\/p>\n<p>C\u00f4ng th\u1ee9c n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft trong vi\u1ec7c thi\u1ebft k\u1ebf \u0111\u00e1ng tin c\u1eady <strong>\u1ee9ng d\u1ee5ng \u0111i\u1ec7n t\u1eed<\/strong>, \u0111\u1eb7c bi\u1ec7t trong \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/p>","protected":false},"excerpt":{"rendered":"<p>Khai th\u00e1c s\u1ee9c m\u1ea1nh c\u1ee7a ph\u00e9p \u0111o t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc ch\u00ednh x\u00e1c l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ng\u0103n ng\u1eeba c\u00e1c l\u1ed7i PCB th\u1ea3m kh\u1ed1c v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111i\u1ec7n t\u1eed \u0111\u00e1ng tin c\u1eady.<\/p>","protected":false},"author":9,"featured_media":1858,"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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","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":"","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":""}},"ast-content-background-meta":{"desktop":{"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":""},"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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[15],"tags":[],"class_list":["post-1859","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-copper-clad-laminate-characteristics"],"uagb_featured_image_src":{"full":["https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/testing_water_absorption_rate.jpg",1006,575,false],"thumbnail":["https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/testing_water_absorption_rate-150x150.jpg",150,150,true],"medium":["https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/testing_water_absorption_rate-300x171.jpg",300,171,true],"medium_large":["https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/testing_water_absorption_rate-768x439.jpg",768,439,true],"large":["https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/testing_water_absorption_rate.jpg",1006,575,false],"1536x1536":["https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/testing_water_absorption_rate.jpg",1006,575,false],"2048x2048":["https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/testing_water_absorption_rate.jpg",1006,575,false],"trp-custom-language-flag":["https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/testing_water_absorption_rate.jpg",18,10,false]},"uagb_author_info":{"display_name":"Ben Lau","author_link":"https:\/\/tryvary.com\/vi\/author\/wsbpmbzuog4q\/"},"uagb_comment_info":0,"uagb_excerpt":"Harnessing the power of precise water absorption rate measurement is crucial to prevent catastrophic PCB failures and ensure reliable electronic performance.","_links":{"self":[{"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/posts\/1859","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=1859"}],"version-history":[{"count":1,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/posts\/1859\/revisions"}],"predecessor-version":[{"id":2461,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/posts\/1859\/revisions\/2461"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/media\/1858"}],"wp:attachment":[{"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/media?parent=1859"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/categories?post=1859"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/tags?post=1859"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}