{"id":5050,"date":"2026-06-22T07:59:47","date_gmt":"2026-06-22T07:59:47","guid":{"rendered":"https:\/\/flj-pcb.com\/?p=5050"},"modified":"2026-06-22T07:59:50","modified_gmt":"2026-06-22T07:59:50","slug":"why-is-standard-pcb-thickness-1-6mm","status":"publish","type":"post","link":"https:\/\/flj-pcb.com\/vi\/why-is-standard-pcb-thickness-1-6mm\/","title":{"rendered":"T\u1ea1i sao \u0111\u1ed9 d\u00e0y ti\u00eau chu\u1ea9n c\u1ee7a PCB l\u1ea1i l\u00e0 1,6 mm?"},"content":{"rendered":"<style>\n        \/* \u4e8c\u7ea7\u6807\u9898 *\/\n        .blog-content h2 {\n            color: #1e293b;\n            margin-top: 32px;\n            margin-bottom: 16px;\n            border-left: 4px solid #FE5D00;\n            padding-left: 12px;\n        }\n\n        \/* \u6bb5\u843d *\/\n        .blog-content p {\n            margin-bottom: 16px;\n            color: #334155;\n        }\n\n        .blog-content em {\n            color: #4b5563;\n            font-style: italic;\n        }\n\n        \/* \u8868\u683c *\/\n        .blog-content .table-wrap {\n            overflow-x: auto;\n            margin: 16px 0;\n        }\n\n        .blog-content table {\n            width: 100%;\n            border-collapse: collapse;\n            font-size: 14px;\n        }\n\n        .blog-content th, td {\n            border: 1px solid #d1d5db;\n            padding: 6px 8px;\n            text-align: center;\n        }\n\n        .blog-content th {\n            background-color: #fff7ed;\n            font-weight: 600;\n            color: #FE5D00;\n        }\n\n        \/* \u63d0\u793a\u6846 *\/\n        .blog-content .note-box {\n            background-color: #fff7ed;\n            border-left: 4px solid #FE5D00;\n            padding: 16px;\n            margin: 20px 0;\n        }\n\n        .blog-content .note-box strong {\n            color: #FE5D00;\n        }\n\n        \/* \u516c\u5f0f\u5757 *\/\n        .blog-content .formula {\n            background-color: #f1f5f9;\n            padding: 12px 16px;\n            border-radius: 6px;\n            font-family: \"SFMono-Regular\", Consolas, \"Liberation Mono\", Menlo, monospace;\n            text-align: center;\n            font-size: 18px;\n            margin: 12px 0;\n        }\n\n        .blog-content .formula-block {\n            background-color: #f1f5f9;\n            padding: 16px;\n            border-radius: 6px;\n            font-family: \"SFMono-Regular\", Consolas, \"Liberation Mono\", Menlo, monospace;\n            margin: 12px 0;\n            line-height: 1.6;\n        }\n\n        .blog-content .spec-full-img {\n            width: 100%;\n            height: auto;\n            display: block;\n            max-width: 100%;\n            margin: 22px 0;\n            border-radius: 6px;\n        }\n\n    <\/style><div class=\"blog-content\">\n\n    <p>\n        Th\u00f4ng th\u01b0\u1eddng, \u0111\u1ed9 d\u00e0y c\u1ee7a m\u1ed9t b\u1ea3ng m\u1ea1ch in (PCB) ti\u00eau chu\u1ea9n sau khi ho\u00e0n thi\u1ec7n n\u1eb1m trong kho\u1ea3ng t\u1eeb 0,8 mm \u0111\u1ebfn 1,6 mm. \u0110\u1ed9 d\u00e0y m\u1eb7c \u0111\u1ecbnh ph\u1ed5 bi\u1ebfn nh\u1ea5t\nc\u1ee7a b\u1ea3ng m\u1ea1ch l\u00e0 1,6 mm (kho\u1ea3ng 63 mil). Nhi\u1ec1u ti\u00eau chu\u1ea9n v\u1ec1 \u0111\u1ea7u n\u1ed1i c\u0169ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u00e0nh cho k\u00edch th\u01b0\u1edbc 1,6 mm n\u00e0y. V\u1eady ti\u00eau chu\u1ea9n\n\u0111\u1ed9 d\u00e0y n\u00e0y \u0111\u00e3 ra \u0111\u1eddi nh\u01b0 th\u1ebf n\u00e0o?\n    <\/p>\n\n    <h2>Giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a ng\u00e0nh c\u00f4ng nghi\u1ec7p PCB<\/h2>\n    <p>\n        Nh\u00ecn l\u1ea1i l\u1ecbch s\u1eed ph\u00e1t tri\u1ec3n c\u1ee7a PCB, ch\u00fang ta c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng trong th\u1eddi k\u1ef3 \u1ed1ng ch\u00e2n kh\u00f4ng, ng\u00e0nh c\u00f4ng nghi\u1ec7p PCB v\u1eabn c\u00f2n \u1edf\ngiai \u0111o\u1ea1n s\u01a1 khai. Do \u1ed1ng ch\u00e2n kh\u00f4ng t\u1ecfa ra r\u1ea5t nhi\u1ec1u nhi\u1ec7t, n\u00ean ch\u00fang c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn v\u00e0 kh\u00f4ng d\u1ec5 l\u1eafp \u0111\u1eb7t l\u00ean\nb\u1ea3ng m\u1ea1ch in. Ch\u00fang c\u0169ng \u0111\u00f2i h\u1ecfi m\u1ed9t m\u1ee9c \u0111\u1ed9 \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc nh\u1ea5t \u0111\u1ecbnh. V\u00e0o th\u1eddi \u0111i\u1ec3m \u0111\u00f3, c\u00e1c s\u1ea3n ph\u1ea9m \u0111i\u1ec7n t\u1eed ch\u1ee7 y\u1ebfu\n\u0111\u01b0\u1ee3c l\u1eafp r\u00e1p b\u1eb1ng tay.\n    <\/p>\n    <p>\n        Trong <a href=\"https:\/\/flj-pcb.com\/vi\/pcb-substrate-classification-and-material-properties\/\">V\u1eadt li\u1ec7u n\u1ec1n PCB<\/a>, \u0111i\u1ec1u n\u00e0y c\u0169ng li\u00ean quan \u0111\u1ebfn s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a nh\u1ef1a epoxy d\u00f9ng l\u00e0m ch\u1ea5t n\u1ec1n cho b\u1ea3ng m\u1ea1ch in (PCB). V\u00e0o th\u1eddi \u0111i\u1ec3m\n\u0111\u00f3, c\u00e1c v\u1eadt li\u1ec7u n\u1ec1n PCB, l\u00e1 \u0111\u1ed3ng v\u00e0 c\u00e1c quy tr\u00ecnh s\u1ea3n xu\u1ea5t li\u00ean quan kh\u00e1c v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o\ns\u1ea3n xu\u1ea5t c\u00f4ng nghi\u1ec7p.\n    <\/p>\n    <p>\n        V\u00e0o nh\u1eefng n\u0103m 1920, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf m\u1ea1ch \u0111i\u1ec7n \u0111\u00e3 ch\u1ebf t\u1ea1o c\u00e1c b\u1ea3ng m\u1ea1ch t\u1eeb bakelite (nh\u1ef1a phenolic), t\u1ea5m th\u1ea1ch cao, b\u00eca c\u1ee9ng v\u00e0 th\u1eadm ch\u00ed c\u1ea3\n c\u00e1c t\u1ea5m g\u1ed7 m\u1ecfng. Nh\u1eefng t\u1ea5m b\u1ea3ng n\u00e0y tr\u00f4ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 b\u1ea3ng m\u1ea1ch in ho\u1eb7c b\u1ea3ng th\u1eed nghi\u1ec7m. H\u1ecd khoan l\u1ed7 tr\u00ean\nv\u1eadt li\u1ec7u, sau \u0111\u00f3 s\u1eed d\u1ee5ng \u0111inh t\u00e1n ho\u1eb7c bu-l\u00f4ng \u0111\u1ec3 g\u1eafn c\u00e1c d\u00e2y \u0111\u1ed3ng ph\u1eb3ng v\u00e0o b\u1ea3ng v\u00e0 t\u1ea1o th\u00e0nh m\u1ea1ch k\u1ebft n\u1ed1i.\n    <\/p>\n    <p>\n        V\u00e0o nh\u1eefng n\u0103m 1920, chi\u1ebfc radio TRF do Signal s\u1ea3n xu\u1ea5t \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o v\u1edbi m\u1ed9t b\u1ea3ng m\u1ea1ch th\u1eed nghi\u1ec7m b\u1eb1ng g\u1ed7.\n    <\/p>\n    <img decoding=\"async\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/06\/TRF-radio.webp\" alt=\"TRF radio\" class=\"spec-full-img\">\n    <h2>S\u1ef1 ra \u0111\u1eddi v\u00e0 ph\u1ed5 bi\u1ebfn c\u1ee7a nh\u1ef1a phenolic<\/h2>\n    <p>\n        Trong s\u1ed1 c\u00e1c lo\u1ea1i nh\u1ef1a n\u00e0y, bakelite l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c t\u1ed5ng h\u1ee3p v\u00e0o n\u0103m 1872 b\u1edfi nh\u00e0 h\u00f3a h\u1ecdc ng\u01b0\u1eddi \u0110\u1ee9c Adolf von Baeyer (1835\u20131917).\n        N\u0103m 1907, nh\u00e0 h\u00f3a h\u1ecdc ng\u01b0\u1eddi M\u1ef9 Leo Hendrik Baekeland (1863\u20131944) \u0111\u00e3 c\u1ea3i ti\u1ebfn quy tr\u00ecnh s\u1ea3n xu\u1ea5t nh\u1ef1a phenolic\nv\u00e0 bi\u1ebfn n\u00f3 th\u00e0nh m\u1ed9t v\u1eadt li\u1ec7u th\u1ef1c ti\u1ec5n v\u00e0 c\u00f3 th\u1ec3 \u1ee9ng d\u1ee5ng trong c\u00f4ng nghi\u1ec7p. N\u0103m 1910, \u00f4ng th\u00e0nh l\u1eadp C\u00f4ng ty General Bakelite v\u00e0 \u0111\u1eb7t t\u00ean\ncho v\u1eadt li\u1ec7u n\u00e0y l\u00e0 \u201cBakelite.\u201d\n    <\/p>\n    <p>\n        V\u00e0o \u0111\u1ea7u th\u1ebf k\u1ef7 20, d\u1ef1a tr\u00ean lo\u1ea1i nh\u1ef1a phenolic c\u1ee7a Baekeland, vi\u1ec7c s\u1ea3n xu\u1ea5t c\u00f4ng nghi\u1ec7p nh\u1ef1a phenolic \u0111\u00e3\n\u0111\u01b0\u1ee3c b\u1eaft \u0111\u1ea7u t\u1ea1i \u0110\u1ee9c, Anh, Ph\u00e1p, Nh\u1eadt B\u1ea3n v\u00e0 c\u00e1c qu\u1ed1c gia kh\u00e1c. Nh\u1ef1a phenolic c\u0169ng b\u1eaft \u0111\u1ea7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong\nc\u00e1c n\u00fam \u0111i\u1ec1u khi\u1ec3n radio, b\u00e0n xoay \u0111\u0129a, b\u1ea3ng m\u1ea1ch (kh\u00f4ng ph\u1ea3i b\u1ea3ng m\u1ea1ch in) v\u00e0 v\u1ecf s\u1ea3n ph\u1ea9m.\n    <\/p>\n\n    <h2>V\u1eadt li\u1ec7u laminate phenolic \u0111\u00e3 th\u00fac \u0111\u1ea9y s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a PCB<\/h2>\n    <p>\n        N\u0103m 1927, v\u1eadt li\u1ec7u laminate do Formica s\u1ea3n xu\u1ea5t \u0111\u00e3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong c\u00e1c thi\u1ebft b\u1ecb radio gia d\u1ee5ng v\u00e0 radio h\u00e0ng h\u1ea3i. C\u00f9ng n\u0103m \u0111\u00f3, Formica \u0111\u00e3 t\u00ecm ra\nc\u00e1ch th\u00eam gi\u1ea5y trang tr\u00ed b\u1eb1ng quy tr\u00ecnh in th\u1ea1ch b\u1ea3n, nh\u1edd \u0111\u00f3 t\u1ea5m laminate c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t v\u1edbi v\u00e2n g\u1ed7 v\u00e0\nhoa v\u0103n \u0111\u00e1 c\u1ea9m th\u1ea1ch. Khi t\u1ea5m laminate tr\u1edf n\u00ean \u0111a d\u1ea1ng v\u1ec1 m\u00e0u s\u1eafc v\u00e0 trang tr\u00ed h\u01a1n, nhi\u1ec1u b\u00e0n l\u00e0m vi\u1ec7c c\u0169ng s\u1eed d\u1ee5ng t\u1ea5m laminate phenolic\nl\u00e0m v\u1eadt li\u1ec7u b\u1ec1 m\u1eb7t.\n    <\/p>\n    <img decoding=\"async\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/06\/Phenolic-Laminate.webp\" alt=\"Phenolic Laminate\" class=\"spec-full-img\">\n    <p>\n        T\u1ea5m laminate phenolic l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u polymer c\u00f3 \u0111\u1ed9 b\u1ec1n cao v\u00e0 kh\u1ea3 n\u0103ng c\u00e1ch \u0111i\u1ec7n t\u1ed1t. Lo\u1ea1i v\u1eadt li\u1ec7u n\u00e0y c\u00f2n c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t,\nch\u1ed1ng th\u1ea5m n\u01b0\u1edbc, ch\u1ed1ng h\u00f3a ch\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng d\u1eabn d\u00f2ng \u0111i\u1ec7n t\u01b0\u01a1ng \u0111\u1ed1i l\u1edbn. M\u1eb7c d\u00f9 ban \u0111\u1ea7u n\u00f3 kh\u00f4ng\n\u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u00e0nh cho b\u1ea3ng m\u1ea1ch \u0111i\u1ec7n t\u1eed, nh\u01b0ng \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc c\u1ee7a n\u00f3 v\u01b0\u1ee3t tr\u1ed9i h\u01a1n h\u1eb3n so v\u1edbi t\u1ea5m th\u1ea1ch cao, b\u00eca c\u1ee9ng v\u00e0 c\u00e1c\nt\u1ea5m g\u1ed7 m\u1ecfng. Do \u0111\u00f3, n\u00f3 d\u1ea7n tr\u1edf th\u00e0nh v\u1eadt li\u1ec7u n\u1ec1n quan tr\u1ecdng cho c\u00e1c b\u1ea3ng m\u1ea1ch \u0111i\u1ec7n t\u1eed.\n    <\/p>\n    <p>\n        Tuy nhi\u00ean, tr\u00ean t\u1ea5m laminate phenolic, vi\u1ec7c khoan l\u1ed7 v\u00e0 k\u1ebft n\u1ed1i c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed v\u1eabn r\u1ea5t kh\u00f3 kh\u0103n, v\u00e0 \u0111i\u1ec1u n\u00e0y\nth\u1eadm ch\u00ed c\u00f2n ph\u1ee9c t\u1ea1p h\u01a1n so v\u1edbi vi\u1ec7c s\u1eed d\u1ee5ng b\u1ea3ng th\u1eed nghi\u1ec7m (breadboard). Sau \u0111\u00f3, ng\u01b0\u1eddi ta \u0111\u00e3 ph\u00e1t minh ra ph\u01b0\u01a1ng ph\u00e1p d\u00e1n l\u00e1 \u0111\u1ed3ng l\u00ean\nb\u1ec1 m\u1eb7t t\u1ea5m laminate phenolic v\u00e0 kh\u1eafc c\u00e1c \u0111\u01b0\u1eddng m\u1ea1ch. N\u0103m 1913, nh\u00e0 ph\u00e1t minh ng\u01b0\u1eddi Anh Bury \u0111\u00e3 ph\u00e1t tri\u1ec3n m\u1ed9t\nquy tr\u00ecnh ph\u1ee7 m\u1ed9t l\u1edbp ch\u1ea5t ch\u1ed1ng \u0103n m\u00f2n l\u00ean l\u00e1 kim lo\u1ea1i, sau \u0111\u00f3 t\u1ea1o ra c\u00e1c m\u1ea1ch d\u1eabn \u0111i\u1ec7n b\u1eb1ng c\u00e1ch \u0103n m\u00f2n.\n\u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c coi l\u00e0 n\u1ec1n t\u1ea3ng quan tr\u1ecdng c\u1ee7a ng\u00e0nh s\u1ea3n xu\u1ea5t PCB hi\u1ec7n \u0111\u1ea1i.\n    <\/p>\n    <p>\n        Khi nhu c\u1ea7u k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c bo m\u1ea1ch ng\u00e0y c\u00e0ng t\u0103ng, c\u00e1c \u0111\u1ea7u n\u1ed1i bo m\u1ea1ch c\u0169ng ra \u0111\u1eddi.\n    <\/p>\n\n    <h2>Ti\u00eau chu\u1ea9n \u0111\u1ed9 d\u00e0y t\u1ea5m 1,6 mm ra \u0111\u1eddi nh\u01b0 th\u1ebf n\u00e0o<\/h2>\n    <p>\n        V\u00e0o th\u1eddi \u0111i\u1ec3m \u0111\u00f3, t\u1ea5m laminate nh\u1ef1a phenolic \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i v\u1edbi \u0111\u1ed9 d\u00e0y 1\/16 inch (kho\u1ea3ng 63 mil, ho\u1eb7c 1,6 mm). Do \u0111\u00f3,\nc\u00e1c lo\u1ea1i \u0111\u1ea7u n\u1ed1i gi\u1eefa c\u00e1c b\u1ea3ng m\u1ea1ch, khe c\u1eafm v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m li\u00ean quan ban \u0111\u1ea7u c\u0169ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u1ef1a tr\u00ean \u0111\u1ed9 d\u00e0y b\u1ea3ng m\u1ea1ch\nkho\u1ea3ng 1\/16 inch.\n    <\/p>\n    <p>\n        Khi chu\u1ed7i cung \u1ee9ng kh\u00f4ng ng\u1eebng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n, m\u1ed9t h\u1ec7 th\u1ed1ng ti\u00eau chu\u1ea9n ho\u00e0n ch\u1ec9nh \u0111\u00e3 h\u00ecnh th\u00e0nh xoay quanh k\u00edch th\u01b0\u1edbc 1\/16 inch (kho\u1ea3ng 1,6 mm). Ngay c\u1ea3\nkhi v\u1eadt li\u1ec7u v\u00e0 quy tr\u00ecnh s\u1ea3n xu\u1ea5t PCB \u0111\u00e3 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3, \u0111\u1ed9 d\u00e0y 1,6 mm c\u1ee7a b\u1ea3ng m\u1ea1ch v\u1eabn \u0111\u01b0\u1ee3c duy tr\u00ec v\u00e0\nd\u1ea7n d\u1ea7n tr\u1edf th\u00e0nh \u0111\u1ed9 d\u00e0y ti\u00eau chu\u1ea9n m\u1eb7c \u0111\u1ecbnh trong ng\u00e0nh c\u00f4ng nghi\u1ec7p PCB.\n    <\/p>\n\n    <h2>C\u00e1c ti\u00eau chu\u1ea9n hi\u1ec7n \u0111\u1ea1i v\u1ec1 \u0111\u1ed9 d\u00e0y c\u1ee7a b\u1ea3ng m\u1ea1ch in (PCB)<\/h2>\n    <p>\n        Ng\u00e0y nay, c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u n\u1ec1n \u0111\u00e3 \u0111a d\u1ea1ng h\u01a1n r\u1ea5t nhi\u1ec1u, nh\u01b0ng 1,6 mm (ho\u1eb7c 63 mil) v\u1eabn l\u00e0 \u0111\u1ed9 d\u00e0y ti\u00eau chu\u1ea9n c\u1ee7a b\u1ea3ng m\u1ea1ch ho\u00e0n thi\u1ec7n\n\u0111\u01b0\u1ee3c nhi\u1ec1u nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t PCB s\u1eed d\u1ee5ng. Ph\u1ea1m vi \u0111\u1ed9 d\u00e0y ti\u00eau chu\u1ea9n c\u0169ng \u0111\u00e3 \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng t\u1eeb 0,8 mm \u0111\u1ebfn 1,6 mm.\n        <br>\n        <em>(Vui l\u00f2ng tu\u00e2n theo ti\u00eau chu\u1ea9n ri\u00eang c\u1ee7a nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t b\u1ea3ng m\u1ea1ch. M\u1ed9t s\u1ed1 nh\u00e0 m\u00e1y s\u1eed d\u1ee5ng \u0111\u1ed9 d\u00e0y t\u1eeb 0,6 mm \u0111\u1ebfn 2,5 mm.)<\/em>\n    <\/p>\n    <p>\n        N\u1ebfu b\u1ea1n c\u1ea7n s\u1ea3n xu\u1ea5t c\u00e1c b\u1ea3ng m\u1ea1ch in (PCB) m\u1ecfng h\u01a1n ho\u1eb7c d\u00e0y h\u01a1n, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1ea3ng m\u1ea1ch d\u00e0y 0,4 mm ho\u1eb7c 3,0 mm (v\u00ed d\u1ee5: b\u1ea3ng m\u1ea1ch 20 l\u1edbp),\ns\u1ebd ph\u00e1t sinh chi ph\u00ed v\u1eadt li\u1ec7u b\u1ed5 sung. Do \u0111\u00f3, \u0111i\u1ec1u n\u00e0y c\u1ea7n \u0111\u01b0\u1ee3c t\u00ednh \u0111\u1ebfn trong qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf PCB.\n    <\/p>\n\n    <h2>\u0110\u1ed9 d\u00e0y \u0111\u1ed3ng tr\u00ean b\u1ea3ng m\u1ea1ch in (PCB) v\u00e0 kh\u1ea3 n\u0103ng d\u1eabn d\u00f2ng \u0111i\u1ec7n<\/h2>\n    <p>\n        Trong thi\u1ebft k\u1ebf v\u00e0 s\u1ea3n xu\u1ea5t PCB, OZ th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0y \u0111\u1ed3ng. \u0110\u1ed9 d\u00e0y \u0111\u1ed3ng 1 oz c\u00f3 ngh\u0129a l\u00e0\nt\u1ea5m \u0111\u1ed3ng tr\u00ean di\u1ec7n t\u00edch 1 inch vu\u00f4ng c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng 1 ounce, v\u00e0 \u0111\u1ed9 d\u00e0y th\u1ef1c t\u1ebf l\u00e0 kho\u1ea3ng 35 \u03bcm.\n    <\/p>\n    <p>Kh\u1ea3 n\u0103ng d\u1eabn \u0111i\u1ec7n c\u1ee7a l\u00e1 \u0111\u1ed3ng c\u00f3 c\u00e1c \u0111\u1ed9 d\u00e0y v\u00e0 chi\u1ec1u r\u1ed9ng kh\u00e1c nhau \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n\n    <!-- \u8f7d\u6d41\u80fd\u529b\u8868\u683c -->\n    <div class=\"table-wrap\">\n        <table>\n            <thead>\n            <tr>\n                <th>\u0110\u1ed9 d\u00e0y c\u1ee7a \u0111\u1ed3ng<\/th>\n                <th>D\u00f2ng \u0111i\u1ec7n (A)<\/th>\n                <th>Chi\u1ec1u r\u1ed9ng (mm)<\/th>\n                <th>D\u00f2ng \u0111i\u1ec7n (A)<\/th>\n                <th>Chi\u1ec1u r\u1ed9ng (mm)<\/th>\n                <th>D\u00f2ng \u0111i\u1ec7n (A)<\/th>\n                <th>Chi\u1ec1u r\u1ed9ng (mm)<\/th>\n            <\/tr>\n            <\/thead>\n            <tbody>\n            <tr>\n                <td rowspan=\"12\">70 micromet<\/td>\n                <td>6.00<\/td>\n                <td>2.50<\/td>\n                <td>5.10<\/td>\n                <td>2.50<\/td>\n                <td>4.50<\/td>\n                <td>2.50<\/td>\n            <\/tr>\n            <tr>\n                <td>5.10<\/td>\n                <td>2.00<\/td>\n                <td>4.30<\/td>\n                <td>2.00<\/td>\n                <td>4.00<\/td>\n                <td>2.00<\/td>\n            <\/tr>\n            <tr>\n                <td>4.20<\/td>\n                <td>1.50<\/td>\n                <td>3.50<\/td>\n                <td>1.50<\/td>\n                <td>3.20<\/td>\n                <td>1.50<\/td>\n            <\/tr>\n            <tr>\n                <td>3.60<\/td>\n                <td>1.20<\/td>\n                <td>3.00<\/td>\n                <td>1.20<\/td>\n                <td>2.70<\/td>\n                <td>1.20<\/td>\n            <\/tr>\n            <tr>\n                <td>3.20<\/td>\n                <td>1.00<\/td>\n                <td>2.60<\/td>\n                <td>1.00<\/td>\n                <td>2.30<\/td>\n                <td>1.00<\/td>\n            <\/tr>\n            <tr>\n                <td>2.80<\/td>\n                <td>0.80<\/td>\n                <td>2.40<\/td>\n                <td>0.80<\/td>\n                <td>2.00<\/td>\n                <td>0.80<\/td>\n            <\/tr>\n            <tr>\n                <td>2.30<\/td>\n                <td>0.60<\/td>\n                <td>1.90<\/td>\n                <td>0.60<\/td>\n                <td>1.60<\/td>\n                <td>0.60<\/td>\n            <\/tr>\n            <tr>\n                <td>2.00<\/td>\n                <td>0.50<\/td>\n                <td>1.70<\/td>\n                <td>0.50<\/td>\n                <td>1.35<\/td>\n                <td>0.50<\/td>\n            <\/tr>\n            <tr>\n                <td>1.70<\/td>\n                <td>0.40<\/td>\n                <td>1.35<\/td>\n                <td>0.40<\/td>\n                <td>1.10<\/td>\n                <td>0.40<\/td>\n            <\/tr>\n            <tr>\n                <td>1.30<\/td>\n                <td>0.30<\/td>\n                <td>1.10<\/td>\n                <td>0.30<\/td>\n                <td>0.80<\/td>\n                <td>0.30<\/td>\n            <\/tr>\n            <tr>\n                <td>0.90<\/td>\n                <td>0.20<\/td>\n                <td>0.70<\/td>\n                <td>0.20<\/td>\n                <td>0.55<\/td>\n                <td>0.20<\/td>\n            <\/tr>\n            <tr>\n                <td>0.70<\/td>\n                <td>0.15<\/td>\n                <td>0.50<\/td>\n                <td>0.15<\/td>\n                <td>0.20<\/td>\n                <td>0.15<\/td>\n            <\/tr>\n            <\/tbody>\n        <\/table>\n    <\/div>\n\n    <div class=\"note-box\">\n        <strong>L\u01b0u \u00fd:<\/strong> Khi s\u1eed d\u1ee5ng l\u00e1 \u0111\u1ed3ng l\u00e0m ch\u1ea5t d\u1eabn cho d\u00f2ng \u0111i\u1ec7n l\u1edbn, gi\u00e1 tr\u1ecb d\u00f2ng \u0111i\u1ec7n t\u1ed1i \u0111a m\u00e0\nchi\u1ec1u r\u1ed9ng \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ed3ng c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c c\u1ea7n \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn v\u1edbi h\u1ec7 s\u1ed1 gi\u1ea3m t\u1ea3i 50% d\u1ef1a tr\u00ean c\u00e1c gi\u00e1 tr\u1ecb trong b\u1ea3ng.\n    <\/div>\n\n    <p>\n        Do l\u00e1 \u0111\u1ed3ng tr\u00ean b\u1ea3ng m\u1ea1ch ph\u1ee7 \u0111\u1ed3ng c\u00f3 \u0111\u1ed9 d\u00e0y h\u1ea1n ch\u1ebf, n\u00ean c\u1ea7n ph\u1ea3i\nxem x\u00e9t kh\u1ea3 n\u0103ng d\u1eabn d\u00f2ng \u0111i\u1ec7n \u0111\u1ed1i v\u1edbi c\u00e1c \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ed3ng d\u1ea1ng d\u1ea3i c\u1ea7n d\u1eabn d\u00f2ng \u0111i\u1ec7n l\u1edbn. L\u1ea5y \u0111\u1ed9 d\u00e0y l\u00e1 \u0111\u1ed3ng\n \u0111i\u1ec3n h\u00ecnh l\u00e0 0,03 mm l\u00e0m v\u00ed d\u1ee5, n\u1ebfu l\u00e1 \u0111\u1ed3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m d\u00e2y d\u1eabn d\u1ea1ng d\u1ea3i c\u00f3 chi\u1ec1u r\u1ed9ng W (mm) v\u00e0 chi\u1ec1u d\u00e0i\n L (mm), \u0111i\u1ec7n tr\u1edf c\u1ee7a n\u00f3 l\u00e0:\n    <\/p>\n    <div class=\"formula\">\n        0,0005 L\/W\u00b7ohm\n    <\/div>\n    <p>\n        Kh\u1ea3 n\u0103ng d\u1eabn d\u00f2ng \u0111i\u1ec7n c\u1ee7a l\u00e1 \u0111\u1ed3ng c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i v\u00e0 s\u1ed1 l\u01b0\u1ee3ng linh ki\u1ec7n \u0111\u01b0\u1ee3c l\u1eafp tr\u00ean b\u1ea3ng m\u1ea1ch in (PCB),\nc\u0169ng nh\u01b0 v\u00e0o \u0111i\u1ec1u ki\u1ec7n t\u1ea3n nhi\u1ec7t. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n, kh\u1ea3 n\u0103ng d\u1eabn d\u00f2ng \u0111i\u1ec7n c\u1ee7a l\u00e1 \u0111\u1ed3ng th\u01b0\u1eddng c\u00f3 th\u1ec3\n\u0111\u01b0\u1ee3c \u01b0\u1edbc t\u00ednh b\u1eb1ng c\u00f4ng th\u1ee9c kinh nghi\u1ec7m sau:\n    <\/p>\n    <div class=\"formula\">\n        0,15 W (A)\n    <\/div>\n\n    <h2>C\u00e1ch t\u00ednh chi\u1ec1u r\u1ed9ng \u0111\u1ed3ng v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n tr\u00ean PCB<\/h2>\n    <p>Ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n chi\u1ec1u r\u1ed9ng l\u1edbp \u0111\u1ed3ng tr\u00ean b\u1ea3ng m\u1ea1ch in (PCB) v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n \u0111i qua l\u1edbp \u0111\u00f3:<\/p>\n    <p>\n        Th\u00f4ng th\u01b0\u1eddng, \u0111\u1ed9 d\u00e0y l\u00e1 \u0111\u1ed3ng tr\u00ean b\u1ea3ng m\u1ea1ch in (PCB) l\u00e0 35 \u03bcm. Khi chi\u1ec1u r\u1ed9ng \u0111\u01b0\u1eddng d\u1eabn l\u00e0 1 mm, di\u1ec7n t\u00edch m\u1eb7t c\u1eaft ngang c\u1ee7a \u0111\u01b0\u1eddng d\u1eabn\nl\u00e0 0,035 mm\u00b2. Th\u00f4ng th\u01b0\u1eddng, m\u1eadt \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c l\u1ea5y l\u00e0 30 A\/mm\u00b2, do \u0111\u00f3 m\u1ed7i 1 mm chi\u1ec1u r\u1ed9ng \u0111\u01b0\u1eddng d\u1eabn c\u00f3 th\u1ec3 d\u1eabn \u0111\u01b0\u1ee3c kho\u1ea3ng 1\nA.\n    <\/p>\n    <p>Ti\u00eau chu\u1ea9n IPC c\u0169ng \u0111\u01b0a ra c\u00e1c c\u00f4ng th\u1ee9c li\u00ean quan \u0111\u1ebfn s\u1ef1 t\u0103ng nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 d\u00e0y \u0111\u1ed3ng v\u00e0 di\u1ec7n t\u00edch A:<\/p>\n    <div class=\"formula-block\">\n        I = 0,0150(DT\u2070,\u2075\u2074\u2075\u00b3)(A\u2070,\u2077\u00b3\u2074\u2079) \u0111\u1ed1i v\u1edbi c\u00e1c \u0111\u01b0\u1eddng d\u1eabn b\u00ean trong theo ti\u00eau chu\u1ea9n IPC-D-275\n        <br><br>\n        I = 0,0647(DT\u2070,\u2074\u00b2\u2078\u00b9)(A\u2070,\u2076\u2077\u00b3\u00b2) \u0111\u1ed1i v\u1edbi c\u00e1c \u0111\u01b0\u1eddng d\u1eabn b\u00ean ngo\u00e0i theo ti\u00eau chu\u1ea9n IPC-D-275\n    <\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Usually, the thickness of a finished standard PCB is between 0.8 mm and 1.6 mm. The most common default board [&hellip;]<\/p>","protected":false},"author":1,"featured_media":5049,"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-5)","background-image":"","background-repeat":"repeat","background-position":"center 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