{"id":1628,"date":"2026-07-06T09:39:04","date_gmt":"2026-07-06T09:39:04","guid":{"rendered":"https:\/\/haktak.com\/?p=1628"},"modified":"2026-07-06T09:39:06","modified_gmt":"2026-07-06T09:39:06","slug":"thermal-pads-for-mosfets-selection-guide-for-engineers","status":"publish","type":"post","link":"https:\/\/haktak.com\/vi\/thermal-pads-for-mosfets-selection-guide-for-engineers\/","title":{"rendered":"Mi\u1ebfng t\u1ea3n nhi\u1ec7t cho MOSFET: H\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn d\u00e0nh cho k\u1ef9 s\u01b0"},"content":{"rendered":"<p class=\"wp-block-paragraph\">C\u00e1c linh ki\u1ec7n MOSFET c\u1ea7n mi\u1ebfng t\u1ea3n nhi\u1ec7t khi nhi\u1ec7t c\u1ea7n \u0111\u01b0\u1ee3c truy\u1ec1n t\u1eeb v\u1ecf \u0111\u00f3ng g\u00f3i sang b\u1ed9 t\u1ea3n nhi\u1ec7t, v\u1ecf kim lo\u1ea1i, t\u1ea5m l\u00e0m m\u00e1t ho\u1eb7c khung m\u00e1y, v\u00e0 b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac c\u1ea7n \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 d\u00e0y \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, l\u1ea5p \u0111\u1ea7y khe h\u1edf, c\u00e1ch \u0111i\u1ec7n ho\u1eb7c l\u1eafp r\u00e1p s\u1ea1ch s\u1ebd. Vi\u1ec7c l\u1ef1a ch\u1ecdn mi\u1ebfng \u0111\u1ec7m t\u1ea3n nhi\u1ec7t ph\u00f9 h\u1ee3p cho MOSFET ph\u1ee5 thu\u1ed9c v\u00e0o t\u1ed5n th\u1ea5t c\u00f4ng su\u1ea5t, di\u1ec7n t\u00edch ti\u1ebfp x\u00fac, lo\u1ea1i v\u1ecf \u0111\u00f3ng g\u00f3i, c\u00e1ch ly \u0111i\u1ec7n \u00e1p, k\u00edch th\u01b0\u1edbc khe h\u1edf, l\u1ef1c n\u00e9n, \u0111\u1ed9 c\u1ee9ng c\u1ee7a mi\u1ebfng \u0111\u1ec7m, \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i v\u00e0 tr\u1edf kh\u00e1ng nhi\u1ec7t.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1010\" height=\"660\" src=\"https:\/\/haktak.com\/wp-content\/uploads\/2026\/03\/image-15.png\" alt=\"thermal-pads-for-mosfets-selection-guide-for-engineers\" class=\"wp-image-1448\" srcset=\"https:\/\/haktak.com\/wp-content\/uploads\/2026\/03\/image-15.png 1010w, https:\/\/haktak.com\/wp-content\/uploads\/2026\/03\/image-15-300x196.png 300w, https:\/\/haktak.com\/wp-content\/uploads\/2026\/03\/image-15-768x502.png 768w, https:\/\/haktak.com\/wp-content\/uploads\/2026\/03\/image-15-18x12.png 18w, https:\/\/haktak.com\/wp-content\/uploads\/2026\/03\/image-15-600x392.png 600w\" sizes=\"(max-width: 1010px) 100vw, 1010px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed c\u00f4ng su\u1ea5t, kh\u00f4ng n\u00ean ch\u1ec9 d\u1ef1a v\u00e0o h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t (W\/mK) \u0111\u1ec3 l\u1ef1a ch\u1ecdn mi\u1ebfng t\u1ea3n nhi\u1ec7t MOSFET. M\u1ed9t mi\u1ebfng t\u1ea3n nhi\u1ec7t c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t cao v\u1eabn c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng k\u00e9m hi\u1ec7u qu\u1ea3 n\u1ebfu n\u00f3 qu\u00e1 d\u00e0y, qu\u00e1 c\u1ee9ng, kh\u00f4ng \u0111\u01b0\u1ee3c n\u00e9n \u0111\u1ee7 ho\u1eb7c kh\u00f4ng \u0111\u1ea3m b\u1ea3o \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng c\u00e1ch ly \u0111i\u1ec7n c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ee5c ti\u00eau t\u1ed1t h\u01a1n r\u1ea5t \u0111\u01a1n gi\u1ea3n: <strong>Ch\u1ecdn m\u1ed9t mi\u1ebfng \u0111\u1ec7m \u0111\u1ea3m b\u1ea3o ti\u1ebfp x\u00fac ho\u00e0n to\u00e0n, c\u00f3 \u0111i\u1ec7n tr\u1edf nhi\u1ec7t th\u1ea5p, c\u00e1ch ly \u0111i\u1ec7n an to\u00e0n v\u00e0 hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh sau c\u00e1c chu k\u1ef3 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea1i sao mi\u1ebfng t\u1ea3n nhi\u1ec7t MOSFET l\u1ea1i quan tr\u1ecdng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c linh ki\u1ec7n MOSFET th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong b\u1ed9 ngu\u1ed3n, b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1, h\u1ec7 th\u1ed1ng \u0111i\u1ec7n t\u1eed cho xe \u0111i\u1ec7n, h\u1ec7 th\u1ed1ng pin, b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u00e8n LED, m\u00f4-\u0111un ngu\u1ed3n vi\u1ec5n th\u00f4ng v\u00e0 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p. Ch\u00fang c\u00f3 ch\u1ee9c n\u0103ng chuy\u1ec3n m\u1ea1ch d\u00f2ng \u0111i\u1ec7n. \u0110\u1ed3ng th\u1eddi, ch\u00fang c\u0169ng sinh ra nhi\u1ec7t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu nhi\u1ec7t l\u01b0\u1ee3ng \u0111\u00f3 t\u00edch t\u1ee5 g\u1ea7n \u0111i\u1ec3m n\u1ed1i, MOSFET s\u1ebd n\u00f3ng l\u00ean. Nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t v\u00e0 r\u00fat ng\u1eafn tu\u1ed5i th\u1ecd c\u1ee7a thi\u1ebft b\u1ecb. \u0110i\u1ec1u n\u00e0y c\u0169ng c\u00f3 th\u1ec3 l\u00e0m t\u0103ng \u00e1p l\u1ef1c nhi\u1ec7t l\u00ean c\u00e1c m\u1ed1i h\u00e0n, b\u1ea3ng m\u1ea1ch v\u00e0 c\u00e1c linh ki\u1ec7n l\u00e2n c\u1eadn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mi\u1ebfng t\u1ea3n nhi\u1ec7t gi\u00fap d\u1eabn nhi\u1ec7t t\u1eeb g\u00f3i MOSFET sang b\u1ed9 t\u1ea3n nhi\u1ec7t ho\u1eb7c v\u1ecf thi\u1ebft b\u1ecb. N\u00f3 c\u0169ng gi\u00fap l\u1ea5p \u0111\u1ea7y c\u00e1c khe h\u1edf kh\u00f4ng kh\u00ed. Kh\u00f4ng kh\u00ed l\u00e0 ch\u1ea5t d\u1eabn nhi\u1ec7t k\u00e9m, do \u0111\u00f3 ngay c\u1ea3 m\u1ed9t khe h\u1edf nh\u1ecf c\u0169ng c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 t\u1ea3n nhi\u1ec7t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mi\u1ebfng t\u1ea3n nhi\u1ec7t r\u1ea5t h\u1eefu \u00edch khi thi\u1ebft k\u1ebf c\u00f3 c\u00e1c y\u00eau c\u1ea7u sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L\u1ea5p \u0111\u1ea7y kho\u1ea3ng tr\u1ed1ng<\/li>\n\n\n\n<li>C\u00e1ch \u0111i\u1ec7n<\/li>\n\n\n\n<li>\u0110\u1ed9 d\u00e0y \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t<\/li>\n\n\n\n<li>L\u1eafp r\u00e1p s\u1ea1ch s\u1ebd<\/li>\n\n\n\n<li>H\u00ecnh d\u1ea1ng \u0111\u01b0\u1ee3c c\u1eaft khu\u00f4n<\/li>\n\n\n\n<li>\u00cdt g\u00e2y b\u1ea9n h\u01a1n so v\u1edbi keo t\u1ea3n nhi\u1ec7t<\/li>\n\n\n\n<li>S\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c thi\u1ebft k\u1ebf MOSFET, mi\u1ebfng \u0111\u1ec7m kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t t\u1ea5m v\u1eadt li\u1ec7u m\u1ec1m. N\u00f3 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a \u0111\u01b0\u1eddng d\u1eabn nhi\u1ec7t v\u00e0 th\u01b0\u1eddng l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a h\u1ec7 th\u1ed1ng c\u00e1ch nhi\u1ec7t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Khi n\u00e0o th\u00ec MOSFET c\u1ea7n mi\u1ebfng t\u1ea3n nhi\u1ec7t?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c linh ki\u1ec7n MOSFET kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng c\u1ea7n mi\u1ebfng t\u1ea3n nhi\u1ec7t. M\u1ed9t s\u1ed1 thi\u1ebft k\u1ebf s\u1eed d\u1ee5ng m\u1ee1 t\u1ea3n nhi\u1ec7t, c\u00e1c l\u1ed7 d\u1eabn nhi\u1ec7t h\u00e0n, c\u00e1c l\u1edbp \u0111\u1ed3ng tr\u1ef1c ti\u1ebfp, k\u1eb9p ho\u1eb7c ch\u1ea5t n\u1ec1n c\u00f3 l\u1edbp l\u00f3t kim lo\u1ea1i. Mi\u1ebfng t\u1ea3n nhi\u1ec7t s\u1ebd h\u1eefu \u00edch khi giao di\u1ec7n c\u01a1 h\u1ecdc ho\u1eb7c \u0111i\u1ec7n t\u1eed y\u00eau c\u1ea7u s\u1eed d\u1ee5ng n\u00f3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1eed d\u1ee5ng mi\u1ebfng t\u1ea3n nhi\u1ec7t cho \u0111i\u1ec3m ti\u1ebfp x\u00fac gi\u1eefa MOSFET v\u00e0 b\u1ed9 t\u1ea3n nhi\u1ec7t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1eed d\u1ee5ng mi\u1ebfng t\u1ea3n nhi\u1ec7t khi g\u00f3i MOSFET ho\u1eb7c b\u1ea3ng m\u1ea1ch c\u1ea7n truy\u1ec1n nhi\u1ec7t sang b\u1ed9 t\u1ea3n nhi\u1ec7t, n\u1eafp kim lo\u1ea1i ho\u1eb7c th\u00e0nh v\u1ecf qua m\u1ed9t khe h\u1edf nh\u1ecf.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng x\u1ea3y ra khi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>MOSFET \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t g\u1ea7n v\u1ecf kim lo\u1ea1i<\/li>\n\n\n\n<li>B\u1ed9 t\u1ea3n nhi\u1ec7t kh\u00f4ng ho\u00e0n to\u00e0n ph\u1eb3ng<\/li>\n\n\n\n<li>C\u00f3 m\u1ed9t khe h\u1edf c\u01a1 h\u1ecdc \u0111\u00e3 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn<\/li>\n\n\n\n<li>Thi\u1ebft k\u1ebf c\u1ea7n \u0111\u01b0\u1ee3c l\u1eafp r\u00e1p m\u1ed9t c\u00e1ch g\u1ecdn g\u00e0ng<\/li>\n\n\n\n<li>Mi\u1ebfng \u0111\u1ec7m n\u00e0y c\u00f2n c\u00f3 t\u00e1c d\u1ee5ng c\u00e1ch \u0111i\u1ec7n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">H\u00e3y s\u1eed d\u1ee5ng mi\u1ebfng \u0111\u1ec7m c\u00e1ch nhi\u1ec7t cho c\u00e1c b\u00f3ng MOSFET khi ch\u00e2n n\u1ed1i \u0111ang d\u1eabn \u0111i\u1ec7n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u lo\u1ea1i v\u1ecf MOSFET c\u00f3 m\u1ed9t mi\u1ebfng n\u1ed1i n\u1ed1i v\u1edbi c\u1ef1c tho\u00e1t ho\u1eb7c m\u1ed9t mi\u1ebfng ti\u1ebfp x\u00fac h\u1edf. N\u1ebfu b\u1ec1 m\u1eb7t \u0111\u00f3 ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi b\u1ed9 t\u1ea3n nhi\u1ec7t b\u1eb1ng kim lo\u1ea1i, c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mi\u1ebfng \u0111\u1ec7m c\u00e1ch nhi\u1ec7t \u0111i\u1ec7n c\u00f3 th\u1ec3 truy\u1ec1n nhi\u1ec7t \u0111\u1ed3ng th\u1eddi ng\u0103n ch\u1eb7n d\u00f2ng \u0111i\u1ec7n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y c\u00f3 \u00fd ngh\u0129a trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>B\u1ed9 t\u1ea3n nhi\u1ec7t \u0111\u00e3 \u0111\u01b0\u1ee3c n\u1ed1i \u0111\u1ea5t<\/li>\n\n\n\n<li>B\u1ed9 t\u1ea3n nhi\u1ec7t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng chung cho nhi\u1ec1u thi\u1ebft b\u1ecb<\/li>\n\n\n\n<li>Ch\u00e2n MOSFET \u0111ang d\u1eabn \u0111i\u1ec7n<\/li>\n\n\n\n<li>V\u1ecf m\u00e1y \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng kim lo\u1ea1i<\/li>\n\n\n\n<li>C\u1ea7n ph\u1ea3i th\u1ef1c hi\u1ec7n c\u00e1ch ly an to\u00e0n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 bi\u1ebft th\u00eam chi ti\u1ebft, h\u00e3y tham kh\u1ea3o h\u01b0\u1edbng d\u1eabn c\u1ee7a HakTak <a href=\"https:\/\/haktak.com\/vi\/electrically-insulating-thermal-pads-when-do-you-need-them\/\">Mi\u1ebfng \u0111\u1ec7m c\u00e1ch nhi\u1ec7t c\u00e1ch \u0111i\u1ec7n: Khi n\u00e0o b\u1ea1n c\u1ea7n s\u1eed d\u1ee5ng ch\u00fang?<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1eed d\u1ee5ng mi\u1ebfng \u0111\u1ec7m nhi\u1ec7t khi kh\u00f3 ki\u1ec3m so\u00e1t dung sai khe h\u1edf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed9 d\u00e0y PCB, chi\u1ec1u cao m\u1ed1i h\u00e0n, chi\u1ec1u cao v\u1ecf MOSFET, \u0111\u1ed9 ph\u1eb3ng c\u1ee7a b\u1ed9 t\u1ea3n nhi\u1ec7t v\u00e0 dung sai c\u1ee7a v\u1ecf thi\u1ebft b\u1ecb \u0111\u1ec1u g\u00f3p ph\u1ea7n t\u1ea1o n\u00ean sai s\u1ed1 t\u1ed5ng th\u1ec3. Mi\u1ebfng \u0111\u1ec7m t\u1ea3n nhi\u1ec7t c\u00f3 th\u1ec3 b\u00f9 \u0111\u1eafp m\u1ed9t ph\u1ea7n sai s\u1ed1 \u0111\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, mi\u1ebfng \u0111\u1ec7m ph\u1ea3i \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn c\u1ea9n th\u1eadn. N\u1ebfu qu\u00e1 m\u1ecfng, n\u00f3 c\u00f3 th\u1ec3 kh\u00f4ng ti\u1ebfp x\u00fac \u0111\u01b0\u1ee3c. N\u1ebfu qu\u00e1 d\u00e0y, n\u00f3 c\u00f3 th\u1ec3 g\u00e2y \u00e1p l\u1ef1c l\u00ean MOSFET ho\u1eb7c PCB.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Mi\u1ebfng t\u1ea3n nhi\u1ec7t MOSFET so v\u1edbi keo t\u1ea3n nhi\u1ec7t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea3 m\u1ee1 t\u1ea3n nhi\u1ec7t v\u00e0 mi\u1ebfng \u0111\u1ec7m t\u1ea3n nhi\u1ec7t \u0111\u1ec1u gi\u00fap gi\u1ea3m \u0111i\u1ec7n tr\u1edf nhi\u1ec7t. Tuy nhi\u00ean, ch\u00fang ho\u1ea1t \u0111\u1ed9ng theo nh\u1eefng c\u00e1ch kh\u00e1c nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ee1 t\u1ea3n nhi\u1ec7t l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t nh\u1ea5t cho c\u00e1c b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac m\u1ecfng, ph\u1eb3ng v\u00e0 \u0111\u01b0\u1ee3c k\u1eb9p ch\u1eb7t. Lo\u1ea1i m\u1ee1 n\u00e0y c\u00f3 th\u1ec3 t\u1ea1o ra m\u1ed9t l\u1edbp li\u00ean k\u1ebft r\u1ea5t m\u1ecfng. Tuy nhi\u00ean, n\u00f3 kh\u00f4ng gi\u1eef c\u00e1c b\u1ed9 ph\u1eadn c\u1ed1 \u0111\u1ecbnh t\u1ea1i ch\u1ed7 v\u00e0 c\u00f3 th\u1ec3 g\u00e2y b\u1ea9n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mi\u1ebfng \u0111\u1ec7m t\u1ea3n nhi\u1ec7t s\u1ebd ph\u00f9 h\u1ee3p h\u01a1n khi b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac c\u1ea7n l\u1ea5p \u0111\u1ea7y khe h\u1edf, c\u00e1ch \u0111i\u1ec7n, duy tr\u00ec \u0111\u1ed9 d\u00e0y c\u1ed1 \u0111\u1ecbnh ho\u1eb7c \u0111\u1ea3m b\u1ea3o qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n ch\u00ednh x\u00e1c h\u01a1n.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">Y\u1ebfu t\u1ed1<\/td><td class=\"has-text-align-center\" data-align=\"center\">Mi\u1ebfng t\u1ea3n nhi\u1ec7t MOSFET<\/td><td class=\"has-text-align-center\" data-align=\"center\">M\u1ee1 t\u1ea3n nhi\u1ec7t<\/td><\/tr><tr><td>L\u1ea5p \u0111\u1ea7y kho\u1ea3ng tr\u1ed1ng<\/td><td>Ph\u00f9 h\u1ee3p h\u01a1n \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh kho\u1ea3ng c\u00e1ch<\/td><td>Kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c khe h\u1edf l\u1edbn h\u01a1n<\/td><\/tr><tr><td>Ki\u1ec3m so\u00e1t \u0111\u01b0\u1eddng d\u00e2y tr\u00e1i phi\u1ebfu<\/td><td>\u0110\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi \u0111\u1ed9 d\u00e0y mi\u1ebfng \u0111\u1ec7m v\u00e0 l\u1ef1c n\u00e9n<\/td><td>T\u00f9y thu\u1ed9c v\u00e0o l\u01b0\u1ee3ng v\u00e0 \u00e1p su\u1ea5t<\/td><\/tr><tr><td>C\u00e1ch \u0111i\u1ec7n<\/td><td>Th\u01b0\u1eddng th\u1ea5y trong c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t<\/td><td>T\u00f9y thu\u1ed9c v\u00e0o c\u00f4ng th\u1ee9c<\/td><\/tr><tr><td>S\u1eeda l\u1ea1i<\/td><td>Th\u01b0\u1eddng s\u1ea1ch h\u01a1n<\/td><td>C\u1ea7n l\u00e0m s\u1ea1ch d\u1ea7u m\u1ee1 c\u0169<\/td><\/tr><tr><td>L\u1eafp r\u00e1p<\/td><td>D\u1ec5 l\u1eafp \u0111\u1eb7t<\/td><td>C\u00f3 th\u1ec3 kh\u00e1c nhau t\u00f9y theo nh\u00e0 m\u1ea1ng<\/td><\/tr><tr><td>C\u00e1ch s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 nh\u1ea5t<\/td><td>Kho\u1ea3ng c\u00e1ch gi\u1eefa b\u1ed9 t\u1ea3n nhi\u1ec7t, \u0111i\u1ec3m ti\u1ebfp x\u00fac v\u1edbi v\u1ecf m\u00e1y, l\u1edbp c\u00e1ch \u0111i\u1ec7n<\/td><td>Giao di\u1ec7n m\u1ecfng, ph\u1eb3ng c\u00f3 c\u01a1 ch\u1ebf k\u1eb9p<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 t\u00ecm hi\u1ec3u nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 vi\u1ec7c b\u00f4i m\u1ee1, h\u00e3y tham kh\u1ea3o b\u00e0i vi\u1ebft c\u1ee7a HakTak <a href=\"https:\/\/haktak.com\/vi\/tips-applying-thermal-grease-how-it-works\/\">M\u1eb9o b\u00f4i m\u1ee1 t\u1ea3n nhi\u1ec7t v\u00e0 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Mi\u1ebfng t\u1ea3n nhi\u1ec7t MOSFET so v\u1edbi b\u1ed9t t\u1ea3n nhi\u1ec7t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Keo c\u00e1ch nhi\u1ec7t c\u00f3 th\u1ec3 hi\u1ec7u qu\u1ea3 h\u01a1n mi\u1ebfng \u0111\u1ec7m khi khe h\u1edf kh\u00f4ng \u0111\u1ec1u ho\u1eb7c khi c\u00e1c linh ki\u1ec7n c\u00f3 chi\u1ec1u cao kh\u00e1c nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mi\u1ebfng t\u1ea3n nhi\u1ec7t ph\u00e1t huy hi\u1ec7u qu\u1ea3 t\u1ed1t nh\u1ea5t khi kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 v\u00e0 c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i. Ch\u1ea5t tr\u00e1m ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 khi kho\u1ea3ng c\u00e1ch kh\u00f3 d\u1ef1 \u0111o\u00e1n h\u01a1n.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">\u0110i\u1ec1u ki\u1ec7n thi\u1ebft k\u1ebf<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u0110i\u1ec3m kh\u1edfi \u0111\u1ea7u t\u1ed1t h\u01a1n<\/td><td class=\"has-text-align-center\" data-align=\"center\">M\u1ee1 t\u1ea3n nhi\u1ec7t<\/td><\/tr><tr><td>Kho\u1ea3ng c\u00e1ch c\u1ed1 \u0111\u1ecbnh gi\u1eefa MOSFET v\u00e0 b\u1ed9 t\u1ea3n nhi\u1ec7t<\/td><td>Mi\u1ebfng t\u1ea3n nhi\u1ec7t<\/td><td>Kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c khe h\u1edf l\u1edbn h\u01a1n<\/td><\/tr><tr><td>Chi\u1ec1u cao c\u1ee7a nhi\u1ec1u th\u00e0nh ph\u1ea7n<\/td><td>Keo c\u00e1ch nhi\u1ec7t<\/td><td>T\u00f9y thu\u1ed9c v\u00e0o l\u01b0\u1ee3ng v\u00e0 \u00e1p su\u1ea5t<\/td><\/tr><tr><td>C\u1ea7n chi ti\u1ebft \u0111\u01b0\u1ee3c c\u1eaft khu\u00f4n<\/td><td>Mi\u1ebfng t\u1ea3n nhi\u1ec7t<\/td><td>T\u00f9y thu\u1ed9c v\u00e0o c\u00f4ng th\u1ee9c<\/td><\/tr><tr><td>V\u1ecf kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u \u00e1p su\u1ea5t th\u1ea5p<\/td><td>Keo c\u00e1ch nhi\u1ec7t ho\u1eb7c ch\u1ea5t tr\u00e1m khe m\u1ec1m<\/td><td>C\u1ea7n l\u00e0m s\u1ea1ch d\u1ea7u m\u1ee1 c\u0169<\/td><\/tr><tr><td>\u0110\u1eb7t th\u1ee7 c\u00f4ng g\u1ecdn g\u00e0ng<\/td><td>Mi\u1ebfng t\u1ea3n nhi\u1ec7t<\/td><td>C\u00f3 th\u1ec3 kh\u00e1c nhau t\u00f9y theo nh\u00e0 m\u1ea1ng<\/td><\/tr><tr><td>C\u00e1ch s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 nh\u1ea5t<\/td><td>Kho\u1ea3ng c\u00e1ch gi\u1eefa b\u1ed9 t\u1ea3n nhi\u1ec7t, \u0111i\u1ec3m ti\u1ebfp x\u00fac v\u1edbi v\u1ecf m\u00e1y, l\u1edbp c\u00e1ch \u0111i\u1ec7n<\/td><td>Giao di\u1ec7n m\u1ecfng, ph\u1eb3ng c\u00f3 c\u01a1 ch\u1ebf k\u1eb9p<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 bi\u1ebft th\u00eam v\u1ec1 c\u00e1c giao di\u1ec7n kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t, h\u00e3y tham kh\u1ea3o b\u00e0i vi\u1ebft c\u1ee7a HakTak <a href=\"https:\/\/haktak.com\/vi\/thermal-putty-vs-thermal-pad-uneven-gaps\/\">Keo t\u1ea3n nhi\u1ec7t so v\u1edbi mi\u1ebfng t\u1ea3n nhi\u1ec7t: C\u00e1ch l\u1ef1a ch\u1ecdn khi khe h\u1edf kh\u00f4ng \u0111\u1ec1u<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1ch ch\u1ecdn mi\u1ebfng t\u1ea3n nhi\u1ec7t MOSFET d\u1ef1a tr\u00ean t\u1ed5n th\u1ea5t c\u00f4ng su\u1ea5t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y b\u1eaft \u0111\u1ea7u t\u1eeb v\u1ea5n \u0111\u1ec1 t\u1ea3n nhi\u1ec7t. Mi\u1ebfng t\u1ea3n nhi\u1ec7t cho MOSFET ch\u1ec9 th\u1ef1c s\u1ef1 h\u1eefu \u00edch n\u1ebfu n\u00f3 c\u00f3 th\u1ec3 d\u1eabn nhi\u1ec7t \u0111\u1ee7 qua di\u1ec7n t\u00edch c\u00f3 s\u1eb5n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u01af\u1edbc t\u00ednh c\u00f4ng su\u1ea5t ti\u00eau t\u00e1n c\u1ee7a MOSFET<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c tr\u01b0\u1eddng h\u1ee3p m\u1ea5t \u0111i\u1ec7n c\u00f3 th\u1ec3 bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u1ea5t m\u00e1t do d\u1eabn \u0111i\u1ec7n<\/li>\n\n\n\n<li>M\u1ea5t m\u00e1t do chuy\u1ec3n m\u1ea1ch<\/li>\n\n\n\n<li>M\u1ea5t m\u00e1t li\u00ean quan \u0111\u1ebfn m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n c\u1ed5ng<\/li>\n\n\n\n<li>Kh\u1ea5u hao li\u00ean quan \u0111\u1ebfn thu h\u1ed3i ng\u01b0\u1ee3c<\/li>\n\n\n\n<li>C\u00e1c kho\u1ea3n l\u1ed7 t\u1eeb ho\u1ea1t \u0111\u1ed9ng \u0111\u00f3ng g\u00f3i v\u00e0 ph\u00e2n ph\u1ed1i b\u1ea3ng m\u1ea1ch<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 th\u1ef1c hi\u1ec7n m\u1ed9t ph\u00e2n t\u00edch s\u01a1 b\u1ed9 \u0111\u01a1n gi\u1ea3n, c\u00e1c k\u1ef9 s\u01b0 th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u t\u1eeb t\u1ed5ng t\u1ed5n th\u1ea5t c\u1ee7a MOSFET t\u00ednh b\u1eb1ng watt. Sau \u0111\u00f3, h\u1ecd ph\u00e2n b\u1ed5 l\u01b0\u1ee3ng nhi\u1ec7t \u0111\u00f3 v\u00e0o \u0111\u01b0\u1eddng d\u1eabn t\u1ea3n nhi\u1ec7t c\u00f3 s\u1eb5n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">X\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 truy\u1ec1n nhi\u1ec7t s\u01a1 b\u1ed9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u01b0\u1eddng d\u1eabn nhi\u1ec7t c\u1ee7a MOSFET c\u00f3 th\u1ec3 tr\u00f4ng nh\u01b0 sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>N\u00fat giao<\/li>\n\n\n\n<li>V\u1ecf g\u00f3i ho\u1eb7c mi\u1ebfng \u0111\u1ec7m h\u1edf<\/li>\n\n\n\n<li>Mi\u1ebfng t\u1ea3n nhi\u1ec7t<\/li>\n\n\n\n<li>T\u1ea3n nhi\u1ec7t ho\u1eb7c v\u1ecf b\u1ea3o v\u1ec7<\/li>\n\n\n\n<li>L\u00e0m m\u00e1t b\u1eb1ng kh\u00f4ng kh\u00ed ho\u1eb7c ch\u1ea5t l\u1ecfng<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed7i b\u01b0\u1edbc \u0111\u1ec1u l\u00e0m t\u0103ng \u0111i\u1ec7n tr\u1edf nhi\u1ec7t. Mi\u1ebfng t\u1ea3n nhi\u1ec7t ch\u1ec9 l\u00e0 m\u1ed9t b\u1ed9 ph\u1eadn, nh\u01b0ng v\u1eabn c\u00f3 th\u1ec3 tr\u1edf th\u00e0nh \u0111i\u1ec3m ngh\u1ebdn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">H\u00e3y so s\u00e1nh \u0111\u1ed9 c\u1ea3n nhi\u1ec7t, kh\u00f4ng ch\u1ec9 d\u1ef1a tr\u00ean \u0111\u01a1n v\u1ecb W\/mK<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u01a1n v\u1ecb W\/mK r\u1ea5t h\u1eefu \u00edch. Nh\u01b0ng nh\u01b0 v\u1eady v\u1eabn ch\u01b0a \u0111\u1ee7.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u1edf kh\u00e1ng nhi\u1ec7t ph\u1ea3n \u00e1nh ch\u00ednh x\u00e1c h\u01a1n h\u00e0nh vi th\u1ef1c t\u1ebf c\u1ee7a b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac. N\u00f3 bao g\u1ed3m c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 \u0111\u1ed9 d\u00e0y, ti\u1ebfp x\u00fac v\u00e0 \u00e1p su\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n ASTM D5470 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c t\u00ednh ch\u1ea5t truy\u1ec1n nhi\u1ec7t c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u c\u00e1ch \u0111i\u1ec7n d\u1eabn nhi\u1ec7t. Theo ASTM, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111o tr\u1edf kh\u00e1ng nhi\u1ec7t \u1edf tr\u1ea1ng th\u00e1i \u1ed5n \u0111\u1ecbnh v\u00e0 c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng cho c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 m\u1ee1 b\u00f4i tr\u01a1n, v\u1eadt li\u1ec7u thay \u0111\u1ed5i pha, gel, c\u0169ng nh\u01b0 cao su m\u1ec1m ho\u1eb7c c\u1ee9ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong truy\u1ec1n nhi\u1ec7t trong l\u0129nh v\u1ef1c \u0111i\u1ec7n t\u1eed. T\u00e0i li\u1ec7u tham kh\u1ea3o ch\u00ednh th\u1ee9c: <a href=\"https:\/\/store.astm.org\/d5470-17.html\" target=\"_blank\" rel=\"noopener\">ASTM D5470<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">HakTak c\u0169ng \u0111\u1ec1 c\u1eadp \u0111\u1ebfn ch\u1ee7 \u0111\u1ec1 n\u00e0y trong <a href=\"https:\/\/haktak.com\/vi\/thermal-conductivity-vs-thermal-impedance-tim-selection\/\">\u0110\u1ed9 d\u1eabn nhi\u1ec7t so v\u1edbi tr\u1edf kh\u00e1ng nhi\u1ec7t trong vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t (TIM)<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1ch ch\u1ecdn mi\u1ebfng \u0111\u1ec7m c\u00e1ch nhi\u1ec7t cho b\u1ed9 t\u1ea3n nhi\u1ec7t MOSFET<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"564\" src=\"https:\/\/haktak.com\/wp-content\/uploads\/2026\/06\/image-3-1024x564.png\" alt=\"How to choose insulating thermal pads for MOSFET heat sinks\" class=\"wp-image-1540\" srcset=\"https:\/\/haktak.com\/wp-content\/uploads\/2026\/06\/image-3-1024x564.png 1024w, https:\/\/haktak.com\/wp-content\/uploads\/2026\/06\/image-3-300x165.png 300w, https:\/\/haktak.com\/wp-content\/uploads\/2026\/06\/image-3-768x423.png 768w, https:\/\/haktak.com\/wp-content\/uploads\/2026\/06\/image-3-18x10.png 18w, https:\/\/haktak.com\/wp-content\/uploads\/2026\/06\/image-3-600x330.png 600w, https:\/\/haktak.com\/wp-content\/uploads\/2026\/06\/image-3.png 1191w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch ly \u0111i\u1ec7n th\u01b0\u1eddng l\u00e0 l\u00fd do ch\u00ednh \u0111\u1ec3 l\u1ef1a ch\u1ecdn mi\u1ebfng t\u1ea3n nhi\u1ec7t cho c\u00e1c b\u00f3ng b\u00e1n d\u1eabn MOSFET.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ki\u1ec3m tra xem tab MOSFET ho\u1eb7c pad h\u1edf c\u00f3 d\u1eabn \u0111i\u1ec7n hay kh\u00f4ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 lo\u1ea1i v\u1ecf MOSFET n\u1ed1i c\u1ef1c tho\u00e1t (drain) v\u1edbi mi\u1ebfng n\u1ed1i (tab). N\u1ebfu mi\u1ebfng n\u1ed1i \u0111\u00f3 ti\u1ebfp x\u00fac v\u1edbi b\u1ed9 t\u1ea3n nhi\u1ec7t \u0111\u01b0\u1ee3c n\u1ed1i \u0111\u1ea5t, n\u00f3 c\u00f3 th\u1ec3 g\u00e2y ng\u1eafn m\u1ea1ch cho m\u1ea1ch \u0111i\u1ec7n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y \u0111\u1eb7t nh\u1eefng c\u00e2u h\u1ecfi sau \u0111\u00e2y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ch\u00e2n MOSFET c\u00f3 \u0111\u01b0\u1ee3c n\u1ed1i v\u1edbi c\u1ef1c tho\u00e1t kh\u00f4ng?<\/li>\n\n\n\n<li>B\u1ed9 t\u1ea3n nhi\u1ec7t c\u00f3 \u0111\u01b0\u1ee3c n\u1ed1i \u0111\u1ea5t kh\u00f4ng?<\/li>\n\n\n\n<li>C\u00f3 nhi\u1ec1u MOSFET c\u00f9ng s\u1eed d\u1ee5ng chung m\u1ed9t b\u1ed9 t\u1ea3n nhi\u1ec7t kh\u00f4ng?<\/li>\n\n\n\n<li>V\u1ecf m\u00e1y c\u00f3 ph\u1ea3i l\u00e0m b\u1eb1ng kim lo\u1ea1i kh\u00f4ng?<\/li>\n\n\n\n<li>C\u00f3 y\u00eau c\u1ea7u n\u00e0o v\u1ec1 c\u00e1ch ly an to\u00e0n kh\u00f4ng?<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu c\u00e2u tr\u1ea3 l\u1eddi l\u00e0 \u201cc\u00f3\u201d, th\u00ec c\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i s\u1eed d\u1ee5ng mi\u1ebfng \u0111\u1ec7m c\u00e1ch nhi\u1ec7t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ki\u1ec3m tra \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i v\u00e0 \u0111i\u1ec7n \u00e1p \u0111\u1ee9t m\u1ea1ch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i v\u00e0 \u0111i\u1ec7n \u00e1p \u0111\u1ee9t g\u00e3y cho th\u1ea5y kh\u1ea3 n\u0103ng ch\u1ecbu \u1ee9ng su\u1ea5t \u0111i\u1ec7n c\u1ee7a v\u1eadt li\u1ec7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/store.astm.org\/d0149-20.html\" target=\"_blank\" rel=\"noopener\">ASTM D149<\/a> l\u00e0 ti\u00eau chu\u1ea9n tham chi\u1ebfu v\u1ec1 \u0111i\u1ec7n \u00e1p ph\u00e1 v\u1ee1 \u0111i\u1ec7n m\u00f4i v\u00e0 \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u c\u00e1ch \u0111i\u1ec7n r\u1eafn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1eebng ch\u1ec9 nh\u00ecn v\u00e0o th\u00f4ng s\u1ed1 \u0111\u1ecbnh m\u1ee9c danh ngh\u0129a. M\u1ee9c \u0111\u1ed9 n\u00e9n v\u00e0 \u0111\u1ed9 d\u00e0y cu\u1ed1i c\u00f9ng m\u1edbi l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng. M\u1ed9t mi\u1ebfng \u0111\u1ec7m b\u1ecb n\u00e9n qu\u00e1 m\u1ee9c c\u00f3 th\u1ec3 c\u00f3 bi\u00ean \u0111\u1ed9 \u0111i\u1ec7n m\u00f4i th\u1ea5p h\u01a1n d\u1ef1 ki\u1ebfn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e2n b\u1eb1ng gi\u1eefa kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t v\u00e0 \u0111\u1ed9 d\u1eabn nhi\u1ec7t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c mi\u1ebfng \u0111\u1ec7m d\u00e0y h\u01a1n c\u00f3 th\u1ec3 gi\u00fap c\u1ea3i thi\u1ec7n bi\u00ean \u0111\u1ed9 \u0111i\u1ec7n. Ch\u00fang c\u0169ng l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ef1a ch\u1ecdn \u0111\u00fang \u0111\u1eafn kh\u00f4ng ph\u1ea3i l\u00e0 mi\u1ebfng \u0111\u1ec7m c\u00e1ch \u0111i\u1ec7n d\u00e0y nh\u1ea5t. \u0110\u00f3 ch\u00ednh l\u00e0 mi\u1ebfng \u0111\u1ec7m m\u1ecfng nh\u1ea5t c\u00f3 th\u1ec3 l\u1ea5p \u0111\u1ea7y khe h\u1edf, \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111i\u1ec7n m\u00f4i v\u00e0 duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 c\u1ee7a MOSFET \u1edf m\u1ee9c an to\u00e0n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0110\u1ed9 d\u00e0y mi\u1ebfng t\u1ea3n nhi\u1ec7t cho MOSFET<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed9 d\u00e0y c\u1ee7a mi\u1ebfng t\u1ea3n nhi\u1ec7t l\u00e0 m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t c\u1ea7n xem x\u00e9t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110o kho\u1ea3ng c\u00e1ch gi\u1eefa t\u1ea3n nhi\u1ec7t v\u00e0 MOSFET<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu c\u00f3 th\u1ec3, h\u00e3y s\u1eed d\u1ee5ng d\u1eef li\u1ec7u l\u1eafp r\u00e1p th\u1ef1c t\u1ebf. Ph\u1ea7n m\u1ec1m CAD r\u1ea5t h\u1eefu \u00edch, nh\u01b0ng n\u00f3 kh\u00f4ng t\u00ednh \u0111\u1ebfn s\u1ef1 c\u1ed9ng d\u1ed3n dung sai.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Chi\u1ec1u cao v\u1ecf MOSFET<\/li>\n\n\n\n<li>\u0110\u1ed9 d\u00e0y PCB<\/li>\n\n\n\n<li>Chi\u1ec1u cao m\u1ed1i h\u00e0n<\/li>\n\n\n\n<li>\u0110\u1ed9 ph\u1eb3ng c\u1ee7a b\u1ed9 t\u1ea3n nhi\u1ec7t<\/li>\n\n\n\n<li>D\u1ea3i dung sai v\u1ec1 k\u00edch th\u01b0\u1edbc<\/li>\n\n\n\n<li>S\u1ef1 dao \u0111\u1ed9ng c\u1ee7a m\u00f4-men xo\u1eafn v\u00edt<\/li>\n\n\n\n<li>U\u1ed1n v\u00e1n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110o khe h\u1edf t\u1ed1i thi\u1ec3u, danh \u0111\u1ecbnh v\u00e0 t\u1ed1i \u0111a.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">H\u00e3y ch\u1ecdn mi\u1ebfng \u0111\u1ec7m m\u1ecfng nh\u1ea5t m\u00e0 v\u1eabn l\u1ea5p \u0111\u1ea7y kho\u1ea3ng tr\u1ed1ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Mi\u1ebfng \u0111\u1ec7m m\u1ecfng h\u01a1n th\u01b0\u1eddng c\u00f3 \u0111i\u1ec7n tr\u1edf nhi\u1ec7t th\u1ea5p h\u01a1n. Tuy nhi\u00ean, n\u00f3 v\u1eabn ph\u1ea3i ti\u1ebfp x\u00fac v\u1edbi c\u1ea3 hai b\u1ec1 m\u1eb7t t\u1ea1i kho\u1ea3ng c\u00e1ch l\u1edbn nh\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu l\u1edbp n\u00e0y qu\u00e1 m\u1ecfng, n\u00f3 c\u00f3 th\u1ec3 kh\u00f4ng ti\u1ebfp x\u00fac \u0111\u01b0\u1ee3c v\u1edbi b\u1ed9 t\u1ea3n nhi\u1ec7t. N\u1ebfu l\u1edbp n\u00e0y qu\u00e1 d\u00e0y, n\u00f3 c\u00f3 th\u1ec3 g\u00e2y \u00e1p l\u1ef1c l\u00ean MOSFET ho\u1eb7c bo m\u1ea1ch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u01b0\u1edbng d\u1eabn c\u1ee7a HakTak <a href=\"https:\/\/haktak.com\/vi\/how-to-select-thermal-pad-thickness-for-electronics\/\">C\u00e1ch ch\u1ecdn \u0111\u1ed9 d\u00e0y mi\u1ebfng t\u1ea3n nhi\u1ec7t cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed<\/a> tr\u00ecnh b\u00e0y ph\u01b0\u01a1ng ph\u00e1p t\u1eebng b\u01b0\u1edbc.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ki\u1ec3m tra \u0111\u1ed9 d\u00e0y \u0111\u01b0\u1eddng n\u1ed1i sau khi n\u00e9n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed9 d\u00e0y n\u00e9n cu\u1ed1i c\u00f9ng ch\u00ednh l\u00e0 \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp li\u00ean k\u1ebft. \u0110\u00f3 l\u00e0 \u0111\u1ed9 d\u00e0y m\u00e0 nhi\u1ec7t ph\u1ea3i \u0111i qua.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 c\u00f3 m\u1ed9t giao di\u1ec7n \u0111\u01a1n gi\u1ea3n:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>R = t \/ (k \u00d7 A)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ecba \u0111i\u1ec3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>R<\/strong> l\u00e0 \u0111i\u1ec7n tr\u1edf nhi\u1ec7t<\/li>\n\n\n\n<li><strong>t<\/strong> l\u00e0 \u0111\u1ed9 d\u00e0y cu\u1ed1i c\u00f9ng<\/li>\n\n\n\n<li><strong>k<\/strong> l\u00e0 \u0111\u1ed9 d\u1eabn nhi\u1ec7t<\/li>\n\n\n\n<li><strong>A<\/strong> l\u00e0 di\u1ec7n t\u00edch ti\u1ebfp x\u00fac<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">HakTak gi\u1ea3i th\u00edch \u0111i\u1ec1u n\u00e0y trong <a href=\"https:\/\/haktak.com\/vi\/how-bond-line-thickness-affects-thermal-performance\/\">\u0110\u1ed9 d\u00e0y \u0111\u01b0\u1eddng n\u1ed1i \u1ea3nh h\u01b0\u1edfng nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u00e1ch nhi\u1ec7t<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">N\u00e9n mi\u1ebfng t\u1ea3n nhi\u1ec7t cho MOSFET<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1010\" height=\"670\" src=\"https:\/\/haktak.com\/wp-content\/uploads\/2026\/03\/image-8.png\" alt=\"Thermal pad compression for MOSFETs\" class=\"wp-image-1441\" srcset=\"https:\/\/haktak.com\/wp-content\/uploads\/2026\/03\/image-8.png 1010w, https:\/\/haktak.com\/wp-content\/uploads\/2026\/03\/image-8-300x199.png 300w, https:\/\/haktak.com\/wp-content\/uploads\/2026\/03\/image-8-768x509.png 768w, https:\/\/haktak.com\/wp-content\/uploads\/2026\/03\/image-8-18x12.png 18w, https:\/\/haktak.com\/wp-content\/uploads\/2026\/03\/image-8-600x398.png 600w\" sizes=\"(max-width: 1010px) 100vw, 1010px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Mi\u1ebfng \u0111\u1ec7m nhi\u1ec7t c\u1ea7n \u0111\u01b0\u1ee3c n\u00e9n. M\u1ee9c \u0111\u1ed9 n\u00e9n th\u00edch h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 c\u1ee9ng, \u0111\u1ed9 d\u00e0y c\u1ee7a mi\u1ebfng \u0111\u1ec7m v\u00e0 thi\u1ebft k\u1ebf c\u01a1 kh\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">N\u1ebfu \u0111\u1ed9 n\u00e9n qu\u00e1 th\u1ea5p s\u1ebd \u0111\u1ec3 l\u1ea1i c\u00e1c khe h\u1edf ch\u1ee9a kh\u00f4ng kh\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00e9n kh\u00f4ng \u0111\u1ee7 c\u00f3 th\u1ec3 g\u00e2y ra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ti\u1ebfp x\u00fac k\u00e9m<\/li>\n\n\n\n<li>Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t cao<\/li>\n\n\n\n<li>C\u00e1c \u0111i\u1ec3m n\u00f3ng<\/li>\n\n\n\n<li>K\u1ebft qu\u1ea3 nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/li>\n\n\n\n<li>S\u1ef1 bi\u1ebfn thi\u00ean gi\u1eefa c\u00e1c \u0111\u01a1n v\u1ecb<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 x\u1ea3y ra khi mi\u1ebfng \u0111\u1ec7m qu\u00e1 m\u1ecfng ho\u1eb7c qu\u00e1 c\u1ee9ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">N\u00e9n qu\u00e1 m\u1ee9c c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng c\u1ee5m MOSFET<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00e9n qu\u00e1 m\u1ee9c c\u00f3 th\u1ec3 g\u00e2y ra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>U\u1ed1n PCB<\/li>\n\n\n\n<li>\u00c1p l\u1ef1c t\u1eeb g\u00f3i h\u00e0ng<\/li>\n\n\n\n<li>C\u0103ng th\u1eb3ng t\u1ea1i m\u1ed1i h\u00e0n<\/li>\n\n\n\n<li>Bi\u1ebfn d\u1ea1ng k\u1ebft c\u1ea5u nh\u00e0 \u1edf<\/li>\n\n\n\n<li>\u0110\u00f9n t\u1ea5m<\/li>\n\n\n\n<li>D\u01b0 \u0111\u1ecba \u0111i\u1ec7n m\u00f4i th\u1ea5p h\u01a1n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 m\u1ed9t r\u1ee7i ro th\u1ef1c s\u1ef1 trong thi\u1ebft k\u1ebf MOSFET. Linh ki\u1ec7n c\u00f3 th\u1ec3 nh\u1ecf, nh\u01b0ng \u1ee9ng su\u1ea5t c\u00f3 th\u1ec3 t\u1eadp trung t\u1ea1i m\u1ed9t v\u00f9ng c\u1ee5c b\u1ed9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u00ednh to\u00e1n \u0111\u1ed9 n\u00e9n tr\u00ean to\u00e0n b\u1ed9 d\u1ea3i khe h\u1edf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng n\u00ean t\u00ednh to\u00e1n \u0111\u1ed9 n\u00e9n ch\u1ec9 d\u1ef1a tr\u00ean khe h\u1edf danh \u0111\u1ecbnh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kho\u1ea3ng c\u00e1ch t\u1ed1i thi\u1ec3u<\/li>\n\n\n\n<li>Kho\u1ea3ng c\u00e1ch danh ngh\u0129a<\/li>\n\n\n\n<li>Kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i vi\u1ebft c\u1ee7a HakTak <a href=\"https:\/\/haktak.com\/vi\/thermal-pad-compression-ratio-how-much-is-enough\/\">T\u1ef7 l\u1ec7 n\u00e9n mi\u1ebfng t\u1ea3n nhi\u1ec7t: Bao nhi\u00eau l\u00e0 \u0111\u1ee7?<\/a> gi\u1ea3i th\u00edch ph\u01b0\u01a1ng ph\u00e1p n\u00e0y.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Mi\u1ebfng t\u1ea3n nhi\u1ec7t m\u1ec1m so v\u1edbi mi\u1ebfng t\u1ea3n nhi\u1ec7t c\u1ee9ng cho MOSFET<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed9 c\u1ee9ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn l\u1ef1c v\u00e0 ti\u1ebfp x\u00fac.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mi\u1ebfng \u0111\u1ec7m m\u1ec1m d\u1ec5 b\u1ecb n\u00e9n h\u01a1n. Ch\u00fang r\u1ea5t h\u1eefu \u00edch khi \u00e1p su\u1ea5t th\u1ea5p ho\u1eb7c b\u1ec1 m\u1eb7t kh\u00f4ng b\u1eb1ng ph\u1eb3ng. Mi\u1ebfng \u0111\u1ec7m c\u1ee9ng h\u01a1n c\u00f3 th\u1ec3 d\u1ec5 thao t\u00e1c h\u01a1n v\u00e0 \u1ed5n \u0111\u1ecbnh v\u1ec1 k\u00edch th\u01b0\u1edbc h\u01a1n, nh\u01b0ng c\u1ea7n ph\u1ea3i d\u00f9ng l\u1ef1c m\u1ea1nh h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u1ecdn mi\u1ebfng t\u1ea3n nhi\u1ec7t MOSFET m\u1ec1m cho c\u00e1c thi\u1ebft k\u1ebf \u00e1p su\u1ea5t th\u1ea5p<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Mi\u1ebfng \u0111\u1ec7m m\u1ec1m r\u1ea5t h\u1eefu \u00edch trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vi\u1ec7c u\u1ed1n cong PCB ph\u1ea3i \u0111\u01b0\u1ee3c h\u1ea1n ch\u1ebf<\/li>\n\n\n\n<li>V\u1ecf b\u1ecdc MOSFET r\u1ea5t d\u1ec5 v\u1ee1<\/li>\n\n\n\n<li>B\u1ec1 m\u1eb7t v\u1ecf kh\u00f4ng \u0111\u01b0\u1ee3c ph\u1eb3ng l\u1eafm<\/li>\n\n\n\n<li>L\u1ef1c v\u1eb7n v\u00edt th\u1ea5p<\/li>\n\n\n\n<li>Dung sai khe h\u1edf r\u1ed9ng h\u01a1n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u1ecdn mi\u1ebfng t\u1ea3n nhi\u1ec7t MOSFET c\u1ee9ng h\u01a1n cho c\u00e1c c\u1ee5m linh ki\u1ec7n \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Mi\u1ebfng \u0111\u1ec7m c\u1ee9ng h\u01a1n c\u00f3 th\u1ec3 h\u1eefu \u00edch trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kho\u1ea3ng c\u00e1ch n\u00e0y \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd<\/li>\n\n\n\n<li>B\u1ed9 t\u1ea3n nhi\u1ec7t c\u00f3 h\u00ecnh d\u1ea1ng ph\u1eb3ng<\/li>\n\n\n\n<li>B\u1ed9 ph\u1eadn l\u1eafp r\u00e1p c\u00f3 th\u1ec3 t\u1ea1o ra l\u1ef1c \u00e9p \u0111\u1ee7 m\u1ea1nh<\/li>\n\n\n\n<li>Vi\u1ec7c x\u1eed l\u00fd c\u00e1c s\u1ea3n ph\u1ea9m c\u1eaft khu\u00f4n r\u1ea5t quan tr\u1ecdng<\/li>\n\n\n\n<li>Vi\u1ec7c l\u00e0m l\u1ea1i c\u1ea7n ph\u1ea3i g\u1ecdn g\u00e0ng h\u01a1n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/store.astm.org\/d2240-15r21.html\" target=\"_blank\" rel=\"noopener\">ASTM D2240<\/a> l\u00e0 t\u00e0i li\u1ec7u tham kh\u1ea3o cho vi\u1ec7c th\u1eed nghi\u1ec7m \u0111\u1ed9 c\u1ee9ng theo thang \u0111o Durometer \u0111\u1ed1i v\u1edbi c\u00e1c v\u1eadt li\u1ec7u c\u00f3 t\u00ednh ch\u1ea5t gi\u1ed1ng cao su.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 c\u00f3 m\u1ed9t so s\u00e1nh th\u1ef1c t\u1ebf, h\u00e3y tham kh\u1ea3o b\u00e0i vi\u1ebft c\u1ee7a HakTak <a href=\"https:\/\/haktak.com\/vi\/soft-vs-hard-thermal-pads-which-is-better\/\">Mi\u1ebfng t\u1ea3n nhi\u1ec7t m\u1ec1m v\u00e0 mi\u1ebfng t\u1ea3n nhi\u1ec7t c\u1ee9ng: Lo\u1ea1i n\u00e0o t\u1ed1t h\u01a1n?<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">B\u1ea3ng l\u1ef1a ch\u1ecdn mi\u1ebfng t\u1ea3n nhi\u1ec7t cho MOSFET<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">Y\u1ebfu t\u1ed1 l\u1ef1a ch\u1ecdn<\/td><td class=\"has-text-align-center\" data-align=\"center\">Nh\u1eefng \u0111i\u1ec1u c\u1ea7n ki\u1ec3m tra<\/td><td class=\"has-text-align-center\" data-align=\"center\">T\u1ea1i sao \u0111i\u1ec1u n\u00e0y l\u1ea1i quan tr\u1ecdng<\/td><\/tr><tr><td>M\u1ea5t \u0111i\u1ec7n<\/td><td>Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a MOSFET t\u00ednh b\u1eb1ng watt<\/td><td>\u0110\u1eb7t m\u1ee5c ti\u00eau nhi\u1ec7t \u0111\u1ed9<\/td><\/tr><tr><td>Khu v\u1ef1c ti\u1ebfp x\u00fac<\/td><td>Di\u1ec7n t\u00edch v\u1ecf b\u1ecdc ho\u1eb7c b\u1ed9 t\u1ea3n nhi\u1ec7t<\/td><td>Di\u1ec7n t\u00edch nh\u1ecf h\u01a1n l\u00e0m t\u0103ng th\u00f4ng l\u01b0\u1ee3ng nhi\u1ec7t<\/td><\/tr><tr><td>Ph\u1ea1m vi ch\u00eanh l\u1ec7ch<\/td><td>T\u1ed1i thi\u1ec3u, danh ngh\u0129a, t\u1ed1i \u0111a<\/td><td>\u0110i\u1ec1u ch\u1ec9nh \u0111\u1ed9 d\u00e0y c\u1ee7a t\u1ea5m \u0111\u1ec7m<\/td><\/tr><tr><td>\u0110i\u1ec7n tr\u1edf nhi\u1ec7t<\/td><td>\u1ede \u0111\u1ed9 d\u00e0y v\u00e0 \u00e1p su\u1ea5t th\u1ef1c t\u1ebf<\/td><td>T\u1ed1t h\u01a1n so v\u1edbi ch\u1ec9 ri\u00eang W\/mK<\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i<\/td><td>Y\u00eau c\u1ea7u c\u00e1ch ly \u0111i\u1ec7n \u00e1p<\/td><td>Ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng \u0111\u1ee9t m\u1ea1ch \u0111i\u1ec7n<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng c\u1ee7a mi\u1ebfng \u0111\u1ec7m<\/td><td>Gi\u00e1 tr\u1ecb Shore ho\u1eb7c gi\u00e1 tr\u1ecb \u0111\u1ed9 c\u1ee9ng theo thang \u0111o Durometer<\/td><td>\u0110i\u1ec1u ch\u1ec9nh l\u1ef1c n\u00e9n<\/td><\/tr><tr><td>T\u1ef7 s\u1ed1 n\u00e9n<\/td><td>T\u1ea1i kho\u1ea3ng c\u00e1ch t\u1ed1i thi\u1ec3u v\u00e0 t\u1ed1i \u0111a<\/td><td>Ng\u0103n ng\u1eeba t\u00ecnh tr\u1ea1ng ti\u1ebfp x\u00fac k\u00e9m ho\u1eb7c c\u0103ng th\u1eb3ng<\/td><\/tr><tr><td>Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng<\/td><td>Li\u00ean t\u1ee5c v\u00e0 c\u1ef1c \u0111\u1ea1i<\/td><td>Ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng m\u1ec1m \u0111i ho\u1eb7c l\u00e3o h\u00f3a<\/td><\/tr><tr><td>\u0110\u1ed9 bi\u1ebfn d\u1ea1ng v\u0129nh vi\u1ec5n<\/td><td>Sau khi nung n\u00f3ng v\u00e0 \u0111\u1ec3 m\u1ed9t th\u1eddi gian<\/td><td>Duy tr\u00ec m\u1ed1i li\u00ean h\u1ec7 l\u00e2u d\u00e0i<\/td><\/tr><tr><td>H\u00e0nh vi x\u1eed l\u00fd l\u1ea1i<\/td><td>Lo\u1ea1i b\u1ecf v\u00e0 d\u01b0 l\u01b0\u1ee3ng<\/td><td>\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng v\u1eadn h\u00e0nh<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c lo\u1ea1i v\u1ecf \u0111\u00f3ng g\u00f3i MOSFET ph\u1ed5 bi\u1ebfn v\u00e0 nh\u1eefng l\u01b0u \u00fd v\u1ec1 mi\u1ebfng t\u1ea3n nhi\u1ec7t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c lo\u1ea1i v\u1ecf \u0111\u00f3ng g\u00f3i MOSFET kh\u00e1c nhau g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 kh\u00e1c nhau v\u1ec1 giao di\u1ec7n t\u1ea3n nhi\u1ec7t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Mi\u1ebfng t\u1ea3n nhi\u1ec7t cho MOSFET TO-220 v\u00e0 TO-247<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c g\u00f3i linh ki\u1ec7n n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1eafn v\u00e0o b\u1ed9 t\u1ea3n nhi\u1ec7t. C\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i c\u00e1ch ly \u0111i\u1ec7n n\u1ebfu mi\u1ebfng n\u1ed1i d\u1eabn \u0111i\u1ec7n. Mi\u1ebfng \u0111\u1ec7m ph\u1ea3i ch\u1ecbu \u0111\u01b0\u1ee3c l\u1ef1c l\u1eafp \u0111\u1eb7t v\u00e0 \u1ee9ng su\u1ea5t \u0111i\u1ec7n \u00e1p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i<\/li>\n\n\n\n<li>\u0110\u1ed9 d\u00e0y mi\u1ebfng \u0111\u1ec7m<\/li>\n\n\n\n<li>M\u00f4-men xo\u1eafn c\u1ee7a v\u00edt<\/li>\n\n\n\n<li>\u0110\u1ed9 ph\u1eb3ng c\u1ee7a v\u1ecf<\/li>\n\n\n\n<li>L\u1edbp ho\u00e0n thi\u1ec7n c\u1ee7a b\u1ed9 t\u1ea3n nhi\u1ec7t<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">H3: Mi\u1ebfng t\u1ea3n nhi\u1ec7t cho MOSFET g\u1eafn b\u1ec1 m\u1eb7t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c MOSFET g\u1eafn b\u1ec1 m\u1eb7t th\u01b0\u1eddng s\u1eed d\u1ee5ng \u0111\u1ed3ng tr\u00ean b\u1ea3ng m\u1ea1ch in (PCB) \u0111\u1ec3 t\u1ea3n nhi\u1ec7t. C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng mi\u1ebfng t\u1ea3n nhi\u1ec7t \u0111\u1ec3 k\u1ebft n\u1ed1i khu v\u1ef1c b\u1ea3ng m\u1ea1ch ho\u1eb7c g\u00f3i linh ki\u1ec7n v\u1edbi v\u1ecf b\u1ea3o v\u1ec7 ho\u1eb7c b\u1ed9 t\u1ea3n nhi\u1ec7t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>V\u00e1n b\u1ecb cong v\u00eanh<\/li>\n\n\n\n<li>Chi\u1ec1u cao c\u1ee7a b\u1ed9 ph\u1eadn<\/li>\n\n\n\n<li>Kho\u1ea3ng c\u00e1ch v\u1ec1 nh\u00e0 \u1edf<\/li>\n\n\n\n<li>Ti\u1ebfp x\u00fac \u00e1p su\u1ea5t th\u1ea5p<\/li>\n\n\n\n<li>C\u00e1c l\u1ef1a ch\u1ecdn mi\u1ebfng \u0111\u1ec7m m\u1ec1m<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">M\u00f4-\u0111un MOSFET v\u00e0 b\u1ea3ng m\u1ea1ch ngu\u1ed3n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c bo m\u1ea1ch ngu\u1ed3n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng nhi\u1ec1u MOSFET g\u1ea7n m\u1ed9t b\u1ed9 t\u1ea3n nhi\u1ec7t. M\u1ed9t mi\u1ebfng \u0111\u1ec7m c\u00f3 th\u1ec3 gi\u00fap c\u00e1ch ly v\u00e0 truy\u1ec1n nhi\u1ec7t, nh\u01b0ng vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh dung sai khe h\u1edf c\u00f3 th\u1ec3 kh\u00e1 ph\u1ee9c t\u1ea1p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R\u1ee7i ro v\u1ec1 \u0111i\u1ec7n \u00e1p t\u1ea3n nhi\u1ec7t chung<\/li>\n\n\n\n<li>\u0110\u1ed9 ph\u1eb3ng tr\u00ean nhi\u1ec1u thi\u1ebft b\u1ecb<\/li>\n\n\n\n<li>\u0110\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a qu\u00e1 tr\u00ecnh n\u00e9n<\/li>\n\n\n\n<li>R\u1ee7i ro t\u1ea1i c\u00e1c \u0111i\u1ec3m n\u00f3ng<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Ki\u1ec3m tra mi\u1ebfng t\u1ea3n nhi\u1ec7t MOSFET tr\u01b0\u1edbc khi \u0111\u01b0a v\u00e0o s\u1ea3n xu\u1ea5t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c ki\u1ec3m tra ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi s\u1ea3n ph\u1ea9m l\u1eafp r\u00e1p ho\u00e0n ch\u1ec9nh. Ch\u1ec9 d\u1ef1a v\u00e0o gi\u00e1 tr\u1ecb trong b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt l\u00e0 ch\u01b0a \u0111\u1ee7.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ki\u1ec3m tra hi\u1ec7u su\u1ea5t nhi\u1ec7t trong c\u1ee5m MOSFET th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nhi\u1ec7t \u0111\u1ed9 v\u1ecf MOSFET<\/li>\n\n\n\n<li>Nhi\u1ec7t \u0111\u1ed9 b\u1ed9 t\u1ea3n nhi\u1ec7t<\/li>\n\n\n\n<li>Nhi\u1ec7t \u0111\u1ed9 bo m\u1ea1ch<\/li>\n\n\n\n<li>Nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng<\/li>\n\n\n\n<li>\u0110i\u1ec1u ki\u1ec7n t\u1ea3i<\/li>\n\n\n\n<li>Tr\u1ea1ng th\u00e1i nhi\u1ec7t \u1ed5n \u0111\u1ecbnh<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y s\u1eed d\u1ee5ng c\u00e1c \u1ed1c v\u00edt, k\u1eb9p, v\u1ecf v\u00e0 \u0111\u1ed9 d\u00e0y mi\u1ebfng \u0111\u1ec7m th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ki\u1ec3m tra \u0111\u1ed9 c\u00e1ch \u0111i\u1ec7n sau khi n\u00e9n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu mi\u1ebfng \u0111\u1ec7m c\u00f3 t\u00ednh c\u00e1ch nhi\u1ec7t, h\u00e3y ki\u1ec3m tra n\u00f3 sau khi l\u1eafp r\u00e1p ho\u1eb7c sau khi ch\u1ecbu l\u1ef1c n\u00e9n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng. \u0110\u1ed9 d\u00e0y cu\u1ed1i c\u00f9ng l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Th\u1eed nghi\u1ec7m l\u00e3o h\u00f3a v\u00e0 chu k\u1ef3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed c\u00f4ng su\u1ea5t kh\u00f4ng duy tr\u00ec \u1edf m\u1ed9t nhi\u1ec7t \u0111\u1ed9 c\u1ed1 \u0111\u1ecbnh m\u00e3i m\u00e3i. Th\u1eed nghi\u1ec7m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Chu k\u1ef3 nhi\u1ec7t<\/li>\n\n\n\n<li>Kh\u1edfi \u0111\u1ed9ng l\u1ea1i ngu\u1ed3n<\/li>\n\n\n\n<li>L\u00e3o h\u00f3a \u1edf nhi\u1ec7t \u0111\u1ed9 cao<\/li>\n\n\n\n<li>Rung \u0111\u1ed9ng<\/li>\n\n\n\n<li>\u0110\u1ed9 \u1ea9m (n\u1ebfu c\u00f3)<\/li>\n\n\n\n<li>\u0110\u1ed9 bi\u1ebfn d\u1ea1ng v\u0129nh vi\u1ec5n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi vi\u1ec7c th\u1eed nghi\u1ec7m c\u00e1c t\u00ednh ch\u1ea5t nhi\u1ec7t c\u1ee7a polymer, ti\u00eau chu\u1ea9n ISO 22007-2 quy \u0111\u1ecbnh ph\u01b0\u01a1ng ph\u00e1p ngu\u1ed3n nhi\u1ec7t m\u1eb7t ph\u1eb3ng tho\u00e1ng qua \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 d\u1eabn nhi\u1ec7t v\u00e0 \u0111\u1ed9 khu\u1ebfch t\u00e1n nhi\u1ec7t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Khi mi\u1ebfng t\u1ea3n nhi\u1ec7t MOSFET kh\u00f4ng ph\u1ea3i l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1i \u01b0u<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Mi\u1ebfng t\u1ea3n nhi\u1ec7t r\u1ea5t h\u1eefu \u00edch. Tuy nhi\u00ean, ch\u00fang kh\u00f4ng ph\u1ea3i l\u00e0 lo\u1ea1i d\u00f9ng \u0111\u01b0\u1ee3c cho m\u1ecdi tr\u01b0\u1eddng h\u1ee3p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1eed d\u1ee5ng keo t\u1ea3n nhi\u1ec7t cho c\u00e1c b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac c\u1ee7a MOSFET r\u1ea5t m\u1ecfng v\u00e0 \u0111\u01b0\u1ee3c k\u1eb9p ch\u1eb7t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu MOSFET ho\u1eb7c m\u00f4-\u0111un \u0111\u01b0\u1ee3c k\u1eb9p ch\u1eb7t v\u00e0o m\u1ed9t b\u1ed9 t\u1ea3n nhi\u1ec7t ph\u1eb3ng v\u00e0 v\u1ea5n \u0111\u1ec1 c\u00e1ch \u0111i\u1ec7n \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c, th\u00ec vi\u1ec7c s\u1eed d\u1ee5ng m\u1ee1 b\u00f4i tr\u01a1n c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp li\u00ean k\u1ebft.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1eed d\u1ee5ng b\u1ed9t nhi\u1ec7t \u0111\u1ec3 l\u1ea5p \u0111\u1ea7y c\u00e1c khe h\u1edf kh\u00f4ng \u0111\u1ec1u tr\u00ean b\u1ea3ng m\u1ea1ch MOSFET<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu MOSFET n\u1eb1m chung khe h\u1edf v\u1ecf v\u1edbi c\u00e1c linh ki\u1ec7n kh\u00e1c c\u00f3 chi\u1ec1u cao kh\u00e1c nhau, th\u00ec ch\u1ea5t tr\u00e1m c\u00f3 th\u1ec3 th\u00edch \u1ee9ng t\u1ed1t h\u01a1n so v\u1edbi mi\u1ebfng \u0111\u1ec7m c\u1ed1 \u0111\u1ecbnh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1eed d\u1ee5ng ch\u1eadu tr\u1ed3ng c\u00e2y \u0111\u1ec3 b\u1ea3o v\u1ec7 v\u00e0 t\u1ea3n nhi\u1ec7t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu thi\u1ebft k\u1ebf y\u00eau c\u1ea7u t\u00ednh bao b\u1ecdc, kh\u1ea3 n\u0103ng ch\u1ed1ng \u1ea9m v\u00e0 truy\u1ec1n nhi\u1ec7t qua m\u1ed9t th\u1ec3 t\u00edch, th\u00ec ch\u1ea5t tr\u00e1m c\u00f3 th\u1ec3 l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n so v\u1edbi mi\u1ebfng \u0111\u1ec7m.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Nh\u1eefng sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p khi l\u1ef1a ch\u1ecdn mi\u1ebfng t\u1ea3n nhi\u1ec7t cho MOSFET<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sai l\u1ea7m \u0111\u1ea7u ti\u00ean l\u00e0 ch\u1ec9 d\u1ef1a v\u00e0o ch\u1ec9 s\u1ed1 W\/mK \u0111\u1ec3 l\u1ef1a ch\u1ecdn. M\u1ed9t mi\u1ebfng \u0111\u1ec7m c\u00f3 ch\u1ec9 s\u1ed1 W\/mK cao v\u1eabn c\u00f3 th\u1ec3 kh\u00f4ng ph\u00e1t huy t\u00e1c d\u1ee5ng n\u1ebfu qu\u00e1 d\u00e0y ho\u1eb7c kh\u00f4ng ti\u1ebfp x\u00fac t\u1ed1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sai l\u1ea7m th\u1ee9 hai l\u00e0 b\u1ecf qua v\u1ea5n \u0111\u1ec1 c\u00e1ch ly \u0111i\u1ec7n. M\u1ed9t ch\u00e2n c\u1ee7a MOSFET c\u00f3 th\u1ec3 \u0111ang mang \u0111i\u1ec7n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sai l\u1ea7m th\u1ee9 ba l\u00e0 ch\u1ec9 c\u0103n c\u1ee9 v\u00e0o khe h\u1edf danh ngh\u0129a \u0111\u1ec3 ch\u1ecdn \u0111\u1ed9 d\u00e0y. Lu\u00f4n ki\u1ec3m tra khe h\u1edf t\u1ed1i thi\u1ec3u v\u00e0 t\u1ed1i \u0111a.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sai l\u1ea7m th\u1ee9 t\u01b0 l\u00e0 s\u1eed d\u1ee5ng mi\u1ebfng \u0111\u1ec7m c\u1ee9ng trong c\u1ee5m l\u1eafp r\u00e1p \u00e1p su\u1ea5t th\u1ea5p. Mi\u1ebfng \u0111\u1ec7m n\u00e0y c\u00f3 th\u1ec3 kh\u00f4ng n\u00e9n \u0111\u1ee7.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sai l\u1ea7m th\u1ee9 n\u0103m l\u00e0 n\u00e9n mi\u1ebfng \u0111\u1ec7m qu\u00e1 m\u1ee9c. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y c\u0103ng th\u1eb3ng cho b\u1ea3ng m\u1ea1ch v\u00e0 l\u00e0m gi\u1ea3m bi\u00ean \u0111\u1ed9 \u0111i\u1ec7n m\u00f4i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sai l\u1ea7m th\u1ee9 s\u00e1u l\u00e0 b\u1ecf qua c\u00e1c b\u00e0i ki\u1ec3m tra l\u00e3o h\u00f3a. Qu\u00e1 tr\u00ecnh thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 l\u1eb7p \u0111i l\u1eb7p l\u1ea1i c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i \u0111\u1ed9 ti\u1ebfp x\u00fac c\u1ee7a mi\u1ebfng \u0111\u1ec7m theo th\u1eddi gian.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sai l\u1ea7m th\u1ee9 b\u1ea3y l\u00e0 cho r\u1eb1ng c\u00f9ng m\u1ed9t mi\u1ebfng \u0111\u1ec7m c\u00f3 th\u1ec3 d\u00f9ng \u0111\u01b0\u1ee3c cho m\u1ecdi lo\u1ea1i v\u1ecf MOSFET.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">G\u00f3c nh\u00ecn c\u1ee7a HakTak<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ea1i HakTak, vi\u1ec7c l\u1ef1a ch\u1ecdn mi\u1ebfng t\u1ea3n nhi\u1ec7t MOSFET b\u1eaft \u0111\u1ea7u t\u1eeb \u0111i\u1ec1u ki\u1ec7n ti\u1ebfp x\u00fac th\u1ef1c t\u1ebf. M\u1ed9t khuy\u1ebfn ngh\u1ecb h\u1eefu \u00edch kh\u00f4ng ch\u1ec9 d\u1ef1a v\u00e0o gi\u00e1 tr\u1ecb W\/mK m\u1ee5c ti\u00eau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c k\u1ef9 s\u01b0 c\u1ea7n cung c\u1ea5p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lo\u1ea1i v\u1ecf MOSFET<\/li>\n\n\n\n<li>M\u1ea5t c\u00f4ng su\u1ea5t ho\u1eb7c t\u1ea3i nhi\u1ec7t<\/li>\n\n\n\n<li>Khu v\u1ef1c ti\u1ebfp x\u00fac<\/li>\n\n\n\n<li>Ph\u1ea1m vi ch\u00eanh l\u1ec7ch<\/li>\n\n\n\n<li>V\u1eadt li\u1ec7u t\u1ea3n nhi\u1ec7t ho\u1eb7c v\u1ecf b\u1ea3o v\u1ec7<\/li>\n\n\n\n<li>\u0110\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i y\u00eau c\u1ea7u<\/li>\n\n\n\n<li>\u00c1p su\u1ea5t ho\u1eb7c m\u00f4-men xo\u1eafn v\u00edt c\u00f3 s\u1eb5n<\/li>\n\n\n\n<li>\u0110\u1ed9 ph\u1eb3ng b\u1ec1 m\u1eb7t<\/li>\n\n\n\n<li>Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng<\/li>\n\n\n\n<li>Y\u00eau c\u1ea7u v\u1ec1 chu k\u1ef3 nhi\u1ec7t<\/li>\n\n\n\n<li>Y\u00eau c\u1ea7u v\u1ec1 rung \u0111\u1ed9ng ho\u1eb7c va \u0111\u1eadp<\/li>\n\n\n\n<li>K\u1ef3 v\u1ecdng v\u1ec1 vi\u1ec7c l\u00e0m l\u1ea1i<\/li>\n\n\n\n<li>Quy tr\u00ecnh s\u1ea3n xu\u1ea5t<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">D\u1ef1a tr\u00ean nh\u1eefng th\u00f4ng tin n\u00e0y, HakTak c\u00f3 th\u1ec3 \u0111\u1ec1 xu\u1ea5t \u0111\u1ed9 d\u00e0y mi\u1ebfng \u0111\u1ec7m, \u0111\u1ed9 c\u1ee9ng, c\u1ea5p \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n, ch\u1ec9 s\u1ed1 \u0111i\u1ec7n m\u00f4i v\u00e0 ph\u1ea1m vi n\u00e9n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mi\u1ebfng t\u1ea3n nhi\u1ec7t MOSFET t\u1ed1t nh\u1ea5t kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng l\u00e0 mi\u1ebfng c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t cao nh\u1ea5t. \u0110\u00f3 l\u00e0 mi\u1ebfng t\u1ea3n nhi\u1ec7t gi\u00fap MOSFET lu\u00f4n m\u00e1t m\u1ebb, \u0111\u01b0\u1ee3c c\u00e1ch ly v\u00e0 \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc trong s\u1ea3n ph\u1ea9m ho\u00e0n thi\u1ec7n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">K\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Mi\u1ebfng t\u1ea3n nhi\u1ec7t cho MOSFET ph\u1ea3i gi\u1ea3i quy\u1ebft \u0111\u1ed3ng th\u1eddi nhi\u1ec1u v\u1ea5n \u0111\u1ec1. Ch\u00fang ph\u1ea3i t\u1ea3n nhi\u1ec7t. Ch\u00fang c\u00f3 th\u1ec3 c\u1ea7n c\u00e1ch \u0111i\u1ec7n. Ch\u00fang ph\u1ea3i l\u1ea5p \u0111\u1ea7y khe h\u1edf. Ch\u00fang ph\u1ea3i n\u00e9n l\u1ea1i m\u00e0 kh\u00f4ng l\u00e0m h\u1ecfng c\u1ee5m linh ki\u1ec7n. Ch\u00fang c\u0169ng ph\u1ea3i duy tr\u00ec t\u00ednh \u1ed5n \u0111\u1ecbnh sau khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a nhi\u1ec7t, th\u1eddi gian v\u00e0 c\u00e1c chu k\u1ef3 ho\u1ea1t \u0111\u1ed9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c xem x\u00e9t t\u1ed5n th\u1ea5t c\u00f4ng su\u1ea5t, lo\u1ea1i v\u1ecf, d\u1ea3i kho\u1ea3ng c\u00e1ch v\u00e0 y\u00eau c\u1ea7u v\u1ec1 \u0111i\u1ec7n \u00e1p c\u1ee7a MOSFET. Sau \u0111\u00f3, so s\u00e1nh c\u00e1c th\u00f4ng s\u1ed1 v\u1ec1 \u0111\u1ed9 d\u00e0y mi\u1ebfng \u0111\u1ec7m, \u0111\u1ed9 c\u1ee9ng, tr\u1edf kh\u00e1ng nhi\u1ec7t, \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i v\u00e0 \u0111\u1ed9 tin c\u1eady.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1eebng ch\u1ec9 d\u1ef1a v\u00e0o th\u00f4ng s\u1ed1 W\/mK \u0111\u1ec3 l\u1ef1a ch\u1ecdn. Mi\u1ebfng t\u1ea3n nhi\u1ec7t MOSFET ph\u00f9 h\u1ee3p l\u00e0 mi\u1ebfng t\u1ea3n nhi\u1ec7t ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 trong \u0111i\u1ec1u ki\u1ec7n l\u1eafp r\u00e1p th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c MOSFET c\u00f3 c\u1ea7n mi\u1ebfng t\u1ea3n nhi\u1ec7t kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c linh ki\u1ec7n MOSFET c\u1ea7n mi\u1ebfng t\u1ea3n nhi\u1ec7t khi nhi\u1ec7t c\u1ea7n \u0111\u01b0\u1ee3c truy\u1ec1n \u0111\u1ebfn b\u1ed9 t\u1ea3n nhi\u1ec7t, v\u1ecf m\u00e1y ho\u1eb7c khung m\u00e1y qua m\u1ed9t khe h\u1edf, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi c\u1ea7n \u0111\u1ea3m b\u1ea3o c\u00e1ch \u0111i\u1ec7n ho\u1eb7c l\u1eafp r\u00e1p s\u1ea1ch s\u1ebd.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Mi\u1ebfng t\u1ea3n nhi\u1ec7t n\u00e0o l\u00e0 t\u1ed1t nh\u1ea5t cho MOSFET?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Lo\u1ea1i mi\u1ebfng \u0111\u1ec7m ph\u00f9 h\u1ee3p nh\u1ea5t ph\u1ee5 thu\u1ed9c v\u00e0o t\u1ed5n th\u1ea5t c\u00f4ng su\u1ea5t, k\u00edch th\u01b0\u1edbc khe h\u1edf, di\u1ec7n t\u00edch ti\u1ebfp x\u00fac, c\u00e1ch ly \u0111i\u1ec7n \u00e1p, \u00e1p su\u1ea5t, \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 c\u1ee9ng v\u00e0 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 tin c\u1eady.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u00f4i n\u00ean d\u00f9ng keo t\u1ea3n nhi\u1ec7t hay mi\u1ebfng \u0111\u1ec7m t\u1ea3n nhi\u1ec7t cho c\u00e1c MOSFET?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1eed d\u1ee5ng m\u1ee1 b\u00f4i tr\u01a1n cho c\u00e1c b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac m\u1ecfng, ph\u1eb3ng v\u00e0 \u0111\u01b0\u1ee3c k\u1eb9p ch\u1eb7t. S\u1eed d\u1ee5ng mi\u1ebfng \u0111\u1ec7m khi c\u1ea7n l\u1ea5p \u0111\u1ea7y khe h\u1edf, ki\u1ec3m so\u00e1t \u0111\u1ed9 d\u00e0y, c\u00e1ch \u0111i\u1ec7n ho\u1eb7c l\u1eafp r\u00e1p s\u1ea1ch s\u1ebd h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Mi\u1ebfng t\u1ea3n nhi\u1ec7t MOSFET c\u00f3 c\u1ea7n c\u00e1ch \u0111i\u1ec7n kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u01b0\u1eddng th\u00ec \u0111\u00fang v\u1eady. N\u1ebfu mi\u1ebfng MOSFET ho\u1eb7c mi\u1ebfng ti\u1ebfp x\u00fac h\u1edf mang \u0111i\u1ec7n v\u00e0 b\u1ed9 t\u1ea3n nhi\u1ec7t c\u00f3 t\u00ednh d\u1eabn \u0111i\u1ec7n, th\u00ec c\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i s\u1eed d\u1ee5ng mi\u1ebfng \u0111\u1ec7m c\u00e1ch \u0111i\u1ec7n d\u1eabn nhi\u1ec7t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Mi\u1ebfng t\u1ea3n nhi\u1ec7t c\u1ee7a MOSFET n\u00ean d\u00e0y bao nhi\u00eau?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed9 d\u00e0y c\u1ee7a n\u00f3 ph\u1ea3i \u0111\u1ee7 \u0111\u1ec3 l\u1ea5p \u0111\u1ea7y khe h\u1edf t\u1ed1i \u0111a v\u00e0 \u0111\u1ee7 m\u1ecfng \u0111\u1ec3 gi\u1eef cho \u0111i\u1ec7n tr\u1edf nhi\u1ec7t \u1edf m\u1ee9c th\u1ea5p. Ki\u1ec3m tra \u0111\u1ed9 n\u00e9n \u1edf c\u00e1c m\u1ee9c khe h\u1edf t\u1ed1i thi\u1ec3u, danh \u0111\u1ecbnh v\u00e0 t\u1ed1i \u0111a.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110\u1ed1i v\u1edbi mi\u1ebfng t\u1ea3n nhi\u1ec7t MOSFET, ch\u1ec9 s\u1ed1 W\/mK c\u00e0ng cao th\u00ec c\u00e0ng t\u1ed1t h\u01a1n sao?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng. \u0110i\u1ec7n tr\u1edf nhi\u1ec7t, \u0111\u1ed9 d\u00e0y, \u00e1p l\u1ef1c ti\u1ebfp x\u00fac v\u00e0 kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t th\u01b0\u1eddng quan tr\u1ecdng h\u01a1n so v\u1edbi ch\u1ec9 ri\u00eang gi\u00e1 tr\u1ecb W\/mK.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Mi\u1ebfng t\u1ea3n nhi\u1ec7t MOSFET c\u1ea7n m\u1ee9c \u0111\u1ed9 n\u00e9n nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea7n c\u00f3 l\u1ef1c n\u00e9n \u0111\u1ee7 l\u1edbn \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ti\u1ebfp x\u00fac ho\u00e0n to\u00e0n m\u00e0 kh\u00f4ng l\u00e0m cong bo m\u1ea1ch in (PCB), g\u00e2y c\u0103ng th\u1eb3ng cho v\u1ecf g\u00f3i ho\u1eb7c l\u00e0m gi\u1ea3m bi\u00ean \u0111\u1ed9 \u0111i\u1ec7n m\u00f4i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Keo t\u1ea3n nhi\u1ec7t c\u00f3 th\u1ec3 thay th\u1ebf mi\u1ebfng \u0111\u1ec7m t\u1ea3n nhi\u1ec7t MOSFET \u0111\u01b0\u1ee3c kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c c\u1ee5m l\u1eafp r\u00e1p kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u ho\u1eb7c c\u00f3 nhi\u1ec1u m\u1ee9c \u0111\u1ed9 cao kh\u00e1c nhau. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o khe h\u1edf ph\u1eb3ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c, mi\u1ebfng \u0111\u1ec7m t\u1ea3n nhi\u1ec7t \u0111\u01b0\u1ee3c c\u1eaft khu\u00f4n th\u01b0\u1eddng mang l\u1ea1i k\u1ebft qu\u1ea3 g\u1ecdn g\u00e0ng h\u01a1n v\u00e0 \u0111\u1ed9 l\u1eb7p l\u1ea1i cao h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u1ea7n ki\u1ec3m tra nh\u1eefng g\u00ec tr\u01b0\u1edbc khi \u0111\u01b0a v\u00e0o s\u1ea3n xu\u1ea5t?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra nhi\u1ec7t \u0111\u1ed9 MOSFET, nhi\u1ec7t \u0111\u1ed9 b\u1ed9 t\u1ea3n nhi\u1ec7t, \u0111i\u1ec7n tr\u1edf nhi\u1ec7t, \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i sau khi n\u00e9n, th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t, rung \u0111\u1ed9ng v\u00e0 l\u00e3o h\u00f3a.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u00f4i n\u00ean g\u1eedi nh\u1eefng d\u1eef li\u1ec7u n\u00e0o cho nh\u00e0 cung c\u1ea5p mi\u1ebfng \u0111\u1ec7m t\u1ea3n nhi\u1ec7t?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vui l\u00f2ng cung c\u1ea5p th\u00f4ng tin v\u1ec1 lo\u1ea1i g\u00f3i h\u00e0ng, t\u1ea3i nhi\u1ec7t, di\u1ec7n t\u00edch ti\u1ebfp x\u00fac, d\u1ea3i khe h\u1edf, y\u00eau c\u1ea7u c\u00e1ch ly \u0111i\u1ec7n \u00e1p, gi\u1edbi h\u1ea1n \u00e1p su\u1ea5t, d\u1ea3i nhi\u1ec7t \u0111\u1ed9 v\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n v\u1ec1 \u0111\u1ed9 tin c\u1eady.<\/p>","protected":false},"excerpt":{"rendered":"<p>MOSFETs need thermal pads when heat must move from the package to a heat sink, metal housing, cold plate, or [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":1448,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"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":"disabled","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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