{"id":4054,"date":"2025-09-24T11:12:00","date_gmt":"2025-09-24T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/comprehensive-guide-to-resistors\/"},"modified":"2026-06-22T06:44:54","modified_gmt":"2026-06-22T06:44:54","slug":"comprehensive-guide-to-resistors","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/comprehensive-guide-to-resistors","title":{"rendered":"C\u00e1c lo\u1ea1i \u0111i\u1ec7n tr\u1edf v\u00e0 \u1ee9ng d\u1ee5ng: T\u1ed5ng quan chi ti\u1ebft"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"464\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ecd35bab5061473b8309906cf2f3cfc8.webp\" alt=\"What is a Resistor?\" class=\"wp-image-4051\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ecd35bab5061473b8309906cf2f3cfc8.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ecd35bab5061473b8309906cf2f3cfc8-300x116.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ecd35bab5061473b8309906cf2f3cfc8-1024x396.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ecd35bab5061473b8309906cf2f3cfc8-768x297.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ecd35bab5061473b8309906cf2f3cfc8-18x7.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>1\ufe0f\u20e3 <\/strong>Gi\u1edbi thi\u1ec7u: \u0110i\u1ec7n tr\u1edf l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>\u0111i\u1ec7n tr\u1edf<\/strong> l\u00e0 m\u1ed9t trong nh\u1eefng linh ki\u1ec7n c\u01a1 b\u1ea3n nh\u1ea5t trong c\u00e1c m\u1ea1ch \u0111i\u1ec7n t\u1eed. Ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 <strong>h\u1ea1n ch\u1ebf d\u00f2ng \u0111i\u1ec7n, chia \u0111i\u1ec7n \u00e1p v\u00e0 b\u1ea3o v\u1ec7 c\u00e1c thi\u1ebft b\u1ecb nh\u1ea1y c\u1ea3m<\/strong>. \u0110\u01b0\u1ee3c \u0111o b\u1eb1ng ohm (\u03a9), \u0111i\u1ec7n tr\u1edf \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a m\u1ea1ch, hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng v\u00e0 an to\u00e0n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ef9 s\u01b0, nh\u00e0 thi\u1ebft k\u1ebf v\u00e0 chuy\u00ean gia mua h\u00e0ng \u0111\u1ec1u d\u1ef1a v\u00e0o \u0111i\u1ec7n tr\u1edf cho c\u00e1c \u1ee9ng d\u1ee5ng t\u1eeb <strong>\u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng<\/strong> to <strong>t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p, thi\u1ebft b\u1ecb m\u1ea1ng v\u00e0 h\u1ec7 th\u1ed1ng \u00f4 t\u00f4<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>2\ufe0f\u20e3 <\/strong>\u0110i\u1ec7n tr\u1edf ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec7n tr\u1edf ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean <strong>\u0110\u1ecbnh lu\u1eadt Ohm (V = I \u00d7 R)<\/strong>, m\u00f4 t\u1ea3 m\u1ed1i quan h\u1ec7 gi\u1eefa \u0111i\u1ec7n \u00e1p (V), d\u00f2ng \u0111i\u1ec7n (I) v\u00e0 \u0111i\u1ec7n tr\u1edf (R). B\u1eb1ng c\u00e1ch \u0111\u01b0a \u0111i\u1ec7n tr\u1edf v\u00e0o m\u1ea1ch, \u0111i\u1ec7n tr\u1edf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110i\u1ec1u khi\u1ec3n d\u00f2ng \u0111i\u1ec7n \u0111\u1ec3 ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng linh ki\u1ec7n.<\/p><\/li><li><p>\u0110i\u1ec1u ch\u1ec9nh m\u1ee9c t\u00edn hi\u1ec7u trong c\u00e1c thi\u1ebft b\u1ecb t\u01b0\u01a1ng t\u1ef1 v\u00e0 s\u1ed1.<\/p><\/li><li><p>Cho ph\u00e9p ph\u00e2n c\u1ef1c trong c\u00e1c linh ki\u1ec7n ch\u1ee7 \u0111\u1ed9ng nh\u01b0 transistor.<\/p><\/li><li><p>Ti\u00eau t\u00e1n c\u00f4ng su\u1ea5t d\u01b0\u1edbi d\u1ea1ng nhi\u1ec7t.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>3\ufe0f\u20e3 <\/strong>C\u00e1c lo\u1ea1i \u0111i\u1ec7n tr\u1edf<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5c338c497823429ba1a3eab9893cfa0c.webp\" alt=\"Types of Resistors\" class=\"wp-image-4052\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5c338c497823429ba1a3eab9893cfa0c.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5c338c497823429ba1a3eab9893cfa0c-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5c338c497823429ba1a3eab9893cfa0c-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5c338c497823429ba1a3eab9893cfa0c-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5c338c497823429ba1a3eab9893cfa0c-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 \u0110i\u1ec7n tr\u1edf c\u1ed1 \u0111\u1ecbnh<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>\u0110i\u1ec7n tr\u1edf phim carbon<\/strong>: Chi ph\u00ed th\u1ea5p, d\u00f9ng ph\u1ed5 th\u00f4ng.<\/p><\/li><li><p><strong>\u0110i\u1ec7n tr\u1edf phim kim lo\u1ea1i<\/strong>: \u0110\u1ed9 \u1ed5n \u0111\u1ecbnh cao v\u00e0 nhi\u1ec5u th\u1ea5p.<\/p><\/li><li><p><strong>\u0110i\u1ec7n tr\u1edf d\u00e2y qu\u1ea5n<\/strong>: Ch\u1ecbu \u0111\u01b0\u1ee3c c\u00f4ng su\u1ea5t cao, d\u00f9ng trong h\u1ec7 th\u1ed1ng c\u00f4ng nghi\u1ec7p.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 \u0110i\u1ec7n tr\u1edf bi\u1ebfn \u0111\u1ed5i<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Chi\u1ebft \u00e1p<\/strong>: B\u1ed9 chia \u0111i\u1ec7n \u00e1p c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh.<\/p><\/li><li><p><strong>Bi\u1ebfn tr\u1edf<\/strong>: D\u00f9ng \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n d\u00f2ng \u0111i\u1ec7n trong \u0111\u1ed9ng c\u01a1 v\u00e0 h\u1ec7 th\u1ed1ng chi\u1ebfu s\u00e1ng.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 \u0110i\u1ec7n tr\u1edf g\u1eafn b\u1ec1 m\u1eb7t (SMD)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nh\u1ecf g\u1ecdn, \u0111\u00e1ng tin c\u1eady v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-pcb-printed-circuit-board\/\"><strong>b\u1ea3ng m\u1ea1ch in hi\u1ec7n \u0111\u1ea1i (PCB)<\/strong><\/a>.<\/p><\/li><li><p>Ph\u00f9 h\u1ee3p v\u1edbi <strong>thi\u1ebft b\u1ecb m\u1ea1ng, h\u1ec7 th\u1ed1ng vi\u1ec5n th\u00f4ng v\u00e0 \u0111i\u1ec7n t\u1eed nh\u1ecf g\u1ecdn<\/strong>.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 \u0110i\u1ec7n tr\u1edf chuy\u00ean d\u1ee5ng<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>\u0110i\u1ec7n tr\u1edf ch\u00ednh x\u00e1c<\/strong>: \u0110\u1ed9 dung sai th\u1ea5p t\u1edbi \u00b10,01%, l\u00fd t\u01b0\u1edfng cho c\u00e1c h\u1ec7 th\u1ed1ng \u0111o l\u01b0\u1eddng.<\/p><\/li><li><p><strong>\u0110i\u1ec7n tr\u1edf c\u00f4ng su\u1ea5t<\/strong>: \u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ecbu t\u1ea3i n\u0103ng l\u01b0\u1ee3ng cao.<\/p><\/li><li><p><strong>\u0110i\u1ec7n tr\u1edf nhi\u1ec7t (Thermistor)<\/strong>: \u0110i\u1ec7n tr\u1edf ph\u1ee5 thu\u1ed9c nhi\u1ec7t \u0111\u1ed9, d\u00f9ng \u0111\u1ec3 c\u1ea3m bi\u1ebfn v\u00e0 b\u1ea3o v\u1ec7.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>4\ufe0f\u20e3 <\/strong>C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt quan tr\u1ecdng khi ch\u1ecdn \u0111i\u1ec7n tr\u1edf<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi t\u00ecm ngu\u1ed3n cung c\u1ea5p \u0111i\u1ec7n tr\u1edf, k\u1ef9 s\u01b0 v\u00e0 ng\u01b0\u1eddi mua c\u1ea7n \u0111\u00e1nh gi\u00e1:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Gi\u00e1 tr\u1ecb \u0111i\u1ec7n tr\u1edf (\u03a9)<\/strong> \u2013 X\u00e1c \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 h\u1ea1n ch\u1ebf d\u00f2ng \u0111i\u1ec7n.<\/p><\/li><li><p><strong>\u0110\u1ed9 dung sai (%)<\/strong> \u2013 \u0110\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a \u0111i\u1ec7n tr\u1edf (v\u00ed d\u1ee5: \u00b11%, \u00b15%).<\/p><\/li><li><p><strong>C\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c (W)<\/strong> \u2013 Nhi\u1ec7t l\u01b0\u1ee3ng t\u1ed1i \u0111a m\u00e0 \u0111i\u1ec7n tr\u1edf c\u00f3 th\u1ec3 ti\u00eau t\u00e1n m\u1ed9t c\u00e1ch an to\u00e0n.<\/p><\/li><li><p><strong>H\u1ec7 s\u1ed1 nhi\u1ec7t (ppm\/\u00b0C)<\/strong> \u2013 \u0110\u1ed9 \u1ed5n \u0111\u1ecbnh khi nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i.<\/p><\/li><li><p><strong>Lo\u1ea1i v\u1ecf b\u1ecdc (<\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-tht-through-hole-technology\/\"><strong>L\u1ed7 xuy\u00ean (Through-Hole)<\/strong><\/a><strong>, <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/understanding-surface-mount-device-smd\/\"><strong>SMD<\/strong><\/a><strong>)<\/strong> \u2013 Quy\u1ebft \u0111\u1ecbnh kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch l\u1eafp r\u00e1p.<\/p><\/li><li><p><strong>\u0110\u1ed9 tin c\u1eady &amp; Ch\u1ee9ng nh\u1eadn<\/strong> \u2013 \u0110\u1eb7c bi\u1ec7t quan tr\u1ecdng trong <strong>ng\u00e0nh \u00f4 t\u00f4, m\u1ea1ng v\u00e0 vi\u1ec5n th\u00f4ng<\/strong>.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>5\ufe0f\u20e3 <\/strong>\u1ee8ng d\u1ee5ng c\u1ee7a \u0111i\u1ec7n tr\u1edf<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec7n tr\u1edf \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ea7u h\u1ebft m\u1ecdi h\u1ec7 th\u1ed1ng \u0111i\u1ec7n t\u1eed. C\u00e1c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>X\u1eed l\u00fd t\u00edn hi\u1ec7u<\/strong> \u2013 \u0110i\u1ec1u ch\u1ec9nh \u0111i\u1ec7n \u00e1p trong c\u00e1c thi\u1ebft b\u1ecb truy\u1ec1n th\u00f4ng.<\/p><\/li><li><p><strong>\u0110i\u1ec1u ti\u1ebft t\u1ea3i<\/strong> \u2013 \u1ed4n \u0111\u1ecbnh m\u1ea1ch trong c\u00e1c b\u1ed9 ngu\u1ed3n.<\/p><\/li><li><p><strong>Thi\u1ebft b\u1ecb m\u1ea1ng<\/strong> \u2013 Thi\u1ebft y\u1ebfu trong <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-network-switch\/\">routers<\/a>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-router-key-functions-types\/\">servers<\/a>, v\u00e0 c\u00e1c thi\u1ebft b\u1ecb PoE.<\/p><\/li><li><p><strong>\u0110i\u1ec7n t\u1eed \u00f4 t\u00f4<\/strong> \u2013 H\u1ed7 tr\u1ee3 c\u1ea3m bi\u1ebfn, ECU v\u00e0 h\u1ec7 th\u1ed1ng LED.<\/p><\/li><li><p><strong>H\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p<\/strong> \u2013 \u0110\u1ea3m b\u1ea3o v\u1eadn h\u00e0nh an to\u00e0n c\u1ee7a \u0111\u1ed9ng c\u01a1 v\u00e0 thi\u1ebft b\u1ecb t\u1ef1 \u0111\u1ed9ng h\u00f3a.<\/p><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Kh\u00e1m ph\u00e1 th\u1ebf gi\u1edbi \u0111i\u1ec7n tr\u1edf v\u1edbi h\u01b0\u1edbng d\u1eabn chuy\u00ean s\u00e2u c\u1ee7a ch\u00fang t\u00f4i. T\u00ecm hi\u1ec3u v\u1ec1 c\u00e1c lo\u1ea1i kh\u00e1c nhau, \u1ee9ng d\u1ee5ng v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t cho c\u00e1c d\u1ef1 \u00e1n \u0111i\u1ec7n t\u1eed c\u1ee7a b\u1ea1n.<\/p>","protected":false},"author":1,"featured_media":4053,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[23],"class_list":["post-4054","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-link-pp-lan-transformers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4054","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/comments?post=4054"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4054\/revisions"}],"predecessor-version":[{"id":11075,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4054\/revisions\/11075"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/4053"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=4054"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=4054"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=4054"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}