{"id":2571,"date":"2026-09-16T15:50:07","date_gmt":"2026-09-16T06:50:07","guid":{"rendered":"https:\/\/steelcrucian.com\/?p=2571"},"modified":"2026-09-16T15:50:08","modified_gmt":"2026-09-16T06:50:08","slug":"led-thermal-resistance-calculator","status":"publish","type":"post","link":"https:\/\/steelcrucian.com\/led-thermal-resistance-calculator\/","title":{"rendered":"\ud83c\udf21\ufe0f LED \uc5f4\uc800\ud56d \uacc4\uc0b0\uae30 \u2013 \uc815\uc158 \uc628\ub3c4 \ud655\uc778\ubd80\ud130 \ud788\ud2b8\uc2f1\ud06c \uc2a4\ud399 \uc5ed\uc0b0\uae4c\uc9c0 (\ubb34\ub8cc \ub3c4\uad6c)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/steelcrucian.com\/led-thermal-design-basics\/\">LED \uc5f4\uc124\uacc4 \uae30\ucd08<\/a>\uc5d0\uc11c \uc815\uc158 \uc628\ub3c4 \uacf5\uc2dd\uc744 \uc815\ub9ac\ud588\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Tj = Ta + Pth \u00d7 (Rth_jc + Rth_cs + Rth_TIM + Rth_sa)\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc2dd\uc740 \uac04\ub2e8\ud55c\ub370, \ub9e4\ubc88 \uc190\uc73c\ub85c \uacc4\uc0b0\ud558\ub824\uba74 \uadc0\ucc2e\uace0 \uc2e4\uc218\ud558\uae30 \uc27d\uc2b5\ub2c8\ub2e4. \ud2b9\ud788 **&#8221;\ubaa9\ud45c \uc628\ub3c4\ub97c \ub9cc\uc871\ud558\ub824\uba74 \ud788\ud2b8\uc2f1\ud06c\uac00 \uc5bc\ub9c8\ub098 \uc88b\uc544\uc57c \ud558\ub098&#8221;**\ub97c \uac70\uafb8\ub85c \uad6c\ud558\ub294 \uacc4\uc0b0\uc740 \ud56d\uc774 \ub9ce\uc544 \ud5f7\uac08\ub9bd\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 \uae00\uc758 \uacc4\uc0b0\uae30\ub294 \ub450 \ubc29\ud5a5\uc744 \ubaa8\ub450 \uc9c0\uc6d0\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\ud83d\udca1 \uacf5\uc2dd\uc758 \uc6d0\ub9ac\ub294 <a href=\"https:\/\/steelcrucian.com\/led-thermal-design-basics\/\">LED \uc5f4\uc124\uacc4 \uae30\ucd08<\/a>\uc5d0, TIM\ubcc4 \uc5f4\uc800\ud56d \uac12\uc740 \ud788\ud2b8\uc2f1\ud06c\uc640 TIM \uc120\uc815 \uac00\uc774\ub4dc\uc5d0 \uc815\ub9ac\ud588\uc2b5\ub2c8\ub2e4. \uc774 \uae00\uc740 \uadf8 \ub450 \uae00\uc758 \uacc4\uc0b0\uc744 \uc790\ub3d9\ud654\ud55c \ub3c4\uad6c\uc785\ub2c8\ub2e4.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_87_1 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"\ubaa9\ucc28 \ud1a0\uae00\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/steelcrucian.com\/led-thermal-resistance-calculator\/#%F0%9F%8C%A1%EF%B8%8F_LED_%EC%97%B4%EC%A0%80%ED%95%AD_%EA%B3%84%EC%82%B0%EA%B8%B0\" >\ud83c\udf21\ufe0f LED \uc5f4\uc800\ud56d \uacc4\uc0b0\uae30<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/steelcrucian.com\/led-thermal-resistance-calculator\/#%F0%9F%93%90_%EC%9E%85%EB%A0%A5%EA%B0%92%EC%9D%80_%EC%96%B4%EB%94%94%EC%84%9C_%EA%B5%AC%ED%95%98%EB%82%98\" >\ud83d\udcd0 \uc785\ub825\uac12\uc740 \uc5b4\ub514\uc11c \uad6c\ud558\ub098<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/steelcrucian.com\/led-thermal-resistance-calculator\/#%F0%9F%A7%AE_%EA%B2%80%EC%A6%9D_%EC%98%88%EC%8B%9C_%E2%80%93_%EC%9D%B4_%EA%B3%84%EC%82%B0%EC%9D%B4_%EC%99%9C_%ED%95%84%EC%9A%94%ED%95%9C%EC%A7%80\" >\ud83e\uddee \uac80\uc99d \uc608\uc2dc \u2013 \uc774 \uacc4\uc0b0\uc774 \uc65c \ud544\uc694\ud55c\uc9c0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/steelcrucian.com\/led-thermal-resistance-calculator\/#%F0%9F%9B%A0%EF%B8%8F_%ED%99%9C%EC%9A%A9_%EC%8B%9C%EB%82%98%EB%A6%AC%EC%98%A4\" >\ud83d\udee0\ufe0f \ud65c\uc6a9 \uc2dc\ub098\ub9ac\uc624<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/steelcrucian.com\/led-thermal-resistance-calculator\/#%E2%9A%A0%EF%B8%8F_%EA%B3%84%EC%82%B0%EA%B8%B0%EA%B0%80_%EB%8B%A4%EB%A3%A8%EC%A7%80_%EB%AA%BB%ED%95%98%EB%8A%94_%EA%B2%83\" >\u26a0\ufe0f \uacc4\uc0b0\uae30\uac00 \ub2e4\ub8e8\uc9c0 \ubabb\ud558\ub294 \uac83<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/steelcrucian.com\/led-thermal-resistance-calculator\/#%E2%9C%85_%ED%95%9C%EB%88%88%EC%97%90_%EC%A0%95%EB%A6%AC\" >\u2705 \ud55c\ub208\uc5d0 \uc815\ub9ac<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/steelcrucian.com\/led-thermal-resistance-calculator\/#%F0%9F%8E%AF_%EC%98%A4%EB%8A%98_%EB%B0%94%EB%A1%9C_%ED%95%B4%EB%B3%BC_%EA%B2%83\" >\ud83c\udfaf \uc624\ub298 \ubc14\ub85c \ud574\ubcfc \uac83<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/steelcrucian.com\/led-thermal-resistance-calculator\/#%F0%9F%93%9A_%ED%95%A8%EA%BB%98_%EC%9D%BD%EC%9C%BC%EB%A9%B4_%EC%A2%8B%EC%9D%80_%EA%B8%80\" >\ud83d\udcda \ud568\uaed8 \uc77d\uc73c\uba74 \uc88b\uc740 \uae00<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%F0%9F%8C%A1%EF%B8%8F_LED_%EC%97%B4%EC%A0%80%ED%95%AD_%EA%B3%84%EC%82%B0%EA%B8%B0\"><\/span>\ud83c\udf21\ufe0f LED \uc5f4\uc800\ud56d \uacc4\uc0b0\uae30<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<style>\n#scThermCalc button{-webkit-appearance:none;appearance:none;letter-spacing:normal;text-transform:none;min-height:0;width:auto;}\n#scThermCalc button:hover{filter:brightness(0.97);}\n#scThermCalc input,#scThermCalc select{background:#fff;color:#1f2937;}\n#scThermCalc *{box-sizing:border-box;}\n<\/style>\n<div id=\"scThermCalc\" style=\"max-width:760px;margin:24px auto;padding:22px;border:1px solid #d8dee6;border-radius:12px;background:#fbfcfe;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','Noto Sans KR',sans-serif;color:#1f2937;\">\n<div style=\"font-size:19px;font-weight:700;margin-bottom:4px;\">\ud83c\udf21\ufe0f LED \uc5f4\uc800\ud56d \uacc4\uc0b0\uae30<\/div>\n<div style=\"font-size:13px;color:#6b7280;margin-bottom:18px;\">Tj = Ta + Pth \u00d7 \u03a3Rth \u00b7 \uc815\uc158 \uc628\ub3c4\uc640 \ud544\uc694 \ud788\ud2b8\uc2f1\ud06c \uc5f4\uc800\ud56d\uc744 \ud568\uaed8 \uacc4\uc0b0\ud569\ub2c8\ub2e4<\/div>\n\n<div style=\"display:flex;gap:8px;margin-bottom:18px;flex-wrap:wrap;\">\n<button type=\"button\" data-scmode=\"1\" style=\"flex:1;min-width:150px;padding:11px 8px;border:1px solid #2563eb;border-radius:8px;background:#2563eb;color:#fff;font-size:14px;font-weight:700;cursor:pointer;line-height:1.4;text-shadow:none;box-shadow:none;\">\u2460 \uc815\uc158 \uc628\ub3c4 \uacc4\uc0b0<\/button>\n<button type=\"button\" data-scmode=\"2\" style=\"flex:1;min-width:150px;padding:11px 8px;border:1px solid #c9d3e0;border-radius:8px;background:#fff;color:#374151;font-size:14px;font-weight:700;cursor:pointer;line-height:1.4;text-shadow:none;box-shadow:none;\">\u2461 \ud544\uc694 \ud788\ud2b8\uc2f1\ud06c \uc5ed\uc0b0<\/button>\n<\/div>\n\n<div style=\"font-size:13.5px;font-weight:700;margin:4px 0 8px;color:#374151;\">\ubc1c\uc5f4 \uc870\uac74<\/div>\n<div style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin-bottom:14px;\">\n<div><label for=\"scVf\" style=\"display:block;font-size:12.5px;font-weight:600;margin-bottom:5px;\">\uc21c\ubc29\ud5a5 \uc804\uc555 Vf (V)<\/label>\n<input id=\"scVf\" type=\"number\" value=\"3.1\" min=\"0\" step=\"any\" style=\"width:100%;padding:10px;border:1px solid #c9d3e0;border-radius:8px;font-size:15px;\"><\/div>\n<div><label for=\"scIf\" style=\"display:block;font-size:12.5px;font-weight:600;margin-bottom:5px;\">\uad6c\ub3d9 \uc804\ub958 If (A)<\/label>\n<input id=\"scIf\" type=\"number\" value=\"0.7\" min=\"0\" step=\"any\" style=\"width:100%;padding:10px;border:1px solid #c9d3e0;border-radius:8px;font-size:15px;\"><\/div>\n<div><label for=\"scN\" style=\"display:block;font-size:12.5px;font-weight:600;margin-bottom:5px;\">LED \uac1c\uc218 (\ubcd1\ub82c \ubc29\uc5f4)<\/label>\n<input id=\"scN\" type=\"number\" value=\"24\" min=\"1\" step=\"1\" style=\"width:100%;padding:10px;border:1px solid #c9d3e0;border-radius:8px;font-size:15px;\"><\/div>\n<div><label for=\"scEta\" style=\"display:block;font-size:12.5px;font-weight:600;margin-bottom:5px;\">\uad11\ud6a8\uc728 (%)<\/label>\n<input id=\"scEta\" type=\"number\" value=\"30\" min=\"0\" max=\"90\" step=\"any\" style=\"width:100%;padding:10px;border:1px solid #c9d3e0;border-radius:8px;font-size:15px;\"><\/div>\n<\/div>\n\n<div style=\"font-size:13.5px;font-weight:700;margin:10px 0 8px;color:#374151;\">\uc5f4\uc800\ud56d \uacbd\ub85c (LED 1\uac1c \uae30\uc900\uac12)<\/div>\n<div style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin-bottom:14px;\">\n<div><label for=\"scRjc\" style=\"display:block;font-size:12.5px;font-weight:600;margin-bottom:5px;\">Rth j-c (\u2103\/W)<\/label>\n<input id=\"scRjc\" type=\"number\" value=\"3.0\" min=\"0\" step=\"any\" style=\"width:100%;padding:10px;border:1px solid #c9d3e0;border-radius:8px;font-size:15px;\"><\/div>\n<div><label for=\"scRcs\" style=\"display:block;font-size:12.5px;font-weight:600;margin-bottom:5px;\">Rth c-s (\u2103\/W)<\/label>\n<input id=\"scRcs\" type=\"number\" value=\"1.5\" min=\"0\" step=\"any\" style=\"width:100%;padding:10px;border:1px solid #c9d3e0;border-radius:8px;font-size:15px;\"><\/div>\n<div><label for=\"scRtim\" style=\"display:block;font-size:12.5px;font-weight:600;margin-bottom:5px;\">TIM \uc5f4\uc800\ud56d (\u2103\/W)<\/label>\n<input id=\"scRtim\" type=\"number\" value=\"0.1\" min=\"0\" step=\"any\" style=\"width:100%;padding:10px;border:1px solid #c9d3e0;border-radius:8px;font-size:15px;\"><\/div>\n<div id=\"scRowRsa\"><label for=\"scRsa\" style=\"display:block;font-size:12.5px;font-weight:600;margin-bottom:5px;\">\ud788\ud2b8\uc2f1\ud06c Rth s-a (\u2103\/W)<\/label>\n<input id=\"scRsa\" type=\"number\" value=\"1.2\" min=\"0\" step=\"any\" style=\"width:100%;padding:10px;border:1px solid #c9d3e0;border-radius:8px;font-size:15px;\"><\/div>\n<\/div>\n\n<div id=\"scRowTa\" style=\"margin-bottom:14px;\">\n<label for=\"scTa\" style=\"display:block;font-size:12.5px;font-weight:600;margin-bottom:5px;\">\uc8fc\uc704 \uc628\ub3c4 Ta (\u2103)<\/label>\n<input id=\"scTa\" type=\"number\" value=\"25\" step=\"any\" style=\"width:220px;max-width:100%;padding:10px;border:1px solid #c9d3e0;border-radius:8px;font-size:15px;\">\n<\/div>\n\n<div id=\"scRowTjt\" style=\"margin-bottom:14px;display:none;\">\n<label for=\"scTjt\" style=\"display:block;font-size:12.5px;font-weight:600;margin-bottom:5px;\">\ubaa9\ud45c \uc815\uc158 \uc628\ub3c4 Tj (\u2103)<\/label>\n<input id=\"scTjt\" type=\"number\" value=\"100\" step=\"any\" style=\"width:220px;max-width:100%;padding:10px;border:1px solid #c9d3e0;border-radius:8px;font-size:15px;\">\n<\/div>\n\n<div style=\"margin-bottom:14px;display:flex;gap:6px;flex-wrap:wrap;\">\n<span style=\"font-size:12px;color:#6b7280;align-self:center;margin-right:2px;\">\ube60\ub978 \uc870\uac74:<\/span>\n<button type=\"button\" data-scta=\"25\" style=\"padding:6px 11px;border:1px solid #c9d3e0;border-radius:999px;background:#fff;color:#374151;font-size:12.5px;line-height:1.4;font-weight:500;cursor:pointer;\">\uac1c\ubc29 25\u2103<\/button>\n<button type=\"button\" data-scta=\"45\" style=\"padding:6px 11px;border:1px solid #c9d3e0;border-radius:999px;background:#fff;color:#374151;font-size:12.5px;line-height:1.4;font-weight:500;cursor:pointer;\">\ubc00\ud3d0 \uae30\uad6c 45\u2103<\/button>\n<\/div>\n\n<div id=\"scOut\" style=\"margin-top:6px;padding:17px;border-radius:10px;background:#eef4ff;border:1px solid #bfd4f8;\">\n<div id=\"scOutLabel\" style=\"font-size:13px;color:#4b5563;margin-bottom:5px;\">\uc815\uc158 \uc628\ub3c4 Tj<\/div>\n<div id=\"scOutValue\" style=\"font-size:29px;font-weight:800;color:#1d4ed8;line-height:1.2;\">\u2014<\/div>\n<div id=\"scOutFormula\" style=\"font-size:12.5px;color:#4b5563;margin-top:9px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;line-height:1.6;\"><\/div>\n<\/div>\n<div id=\"scOutSub\" style=\"margin-top:10px;font-size:13px;color:#374151;\"><\/div>\n\n<div id=\"scNote\" style=\"margin-top:13px;font-size:12.5px;color:#6b7280;line-height:1.65;\">\n\u203b \uc774 \uacc4\uc0b0\uae30\ub294 \uc774\ub860 \ubaa8\ub378\uc785\ub2c8\ub2e4. \uc2e4\uc81c \uac12\uc740 LED \uac1c\uccb4 \ud3b8\ucc28, \uc811\ucd09 \uc555\ub825, \uacf5\uae30 \ud750\ub984 \ub4f1\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9c0\ubbc0\ub85c \uc124\uacc4 \ucd08\uae30 \uac80\ud1a0\uc6a9\uc73c\ub85c \uc0ac\uc6a9\ud558\uc138\uc694.\n<\/div>\n<\/div>\n\n<script>\n(function(){\n  var root = document.getElementById('scThermCalc');\n  if (!root || root.dataset.scInit) { return; }\n  root.dataset.scInit = '1';\n\n  var mode = 1;\n  var ids = ['scVf','scIf','scN','scEta','scRjc','scRcs','scRtim','scRsa','scTa','scTjt'];\n  var el = {};\n  for (var i=0;i<ids.length;i++){ el[ids[i]] = root.querySelector('#'+ids[i]); }\n  var rowRsa = root.querySelector('#scRowRsa');\n  var rowTa = root.querySelector('#scRowTa');\n  var rowTjt = root.querySelector('#scRowTjt');\n  var outLabel = root.querySelector('#scOutLabel');\n  var outValue = root.querySelector('#scOutValue');\n  var outFormula = root.querySelector('#scOutFormula');\n  var outSub = root.querySelector('#scOutSub');\n  var modeBtns = root.querySelectorAll('[data-scmode]');\n  var taBtns = root.querySelectorAll('[data-scta]');\n\n  function fmt(x){\n    if (!isFinite(x)) { return '\u2014'; }\n    if (Math.abs(x) >= 1000) { return x.toFixed(0); }\n    if (Math.abs(x) >= 10) { return x.toFixed(1); }\n    return x.toFixed(2);\n  }\n\n  function paintModes(){\n    for (var i=0;i<modeBtns.length;i++){\n      var on = (parseInt(modeBtns[i].getAttribute('data-scmode'),10)===mode);\n      modeBtns[i].style.background = on ? '#2563eb' : '#fff';\n      modeBtns[i].style.color = on ? '#fff' : '#374151';\n      modeBtns[i].style.borderColor = on ? '#2563eb' : '#c9d3e0';\n    }\n    rowRsa.style.display = (mode===2) ? 'none' : 'block';\n    rowTjt.style.display = (mode===2) ? 'block' : 'none';\n  }\n\n  function calc(){\n    var Vf=parseFloat(el.scVf.value), If=parseFloat(el.scIf.value);\n    var n=parseFloat(el.scN.value), etaPct=parseFloat(el.scEta.value);\n    var Rjc1=parseFloat(el.scRjc.value), Rcs1=parseFloat(el.scRcs.value);\n    var Rtim=parseFloat(el.scRtim.value), Ta=parseFloat(el.scTa.value);\n\n    if (!(Vf>0)||!(If>0)||!(n>=1)||!(etaPct>=0)||!(etaPct<100)||!(Rjc1>=0)||!(Rcs1>=0)||!(Rtim>=0)) {\n      outValue.textContent='\uac12\uc744 \ud655\uc778\ud558\uc138\uc694'; outFormula.textContent=''; outSub.textContent=''; return;\n    }\n    var eta = etaPct\/100;\n    var Pin = Vf*If*n;\n    var Pth = Pin*(1-eta);\n    var RjcEff = Rjc1\/n, RcsEff = Rcs1\/n;\n\n    if (mode===1){\n      var Rsa=parseFloat(el.scRsa.value);\n      if (!(Rsa>=0)) { outValue.textContent='\ud788\ud2b8\uc2f1\ud06c \uc5f4\uc800\ud56d\uc744 \uc785\ub825\ud558\uc138\uc694'; outFormula.textContent=''; outSub.textContent=''; return; }\n      var sumR = RjcEff+RcsEff+Rtim+Rsa;\n      var Tj = Ta + Pth*sumR;\n      outLabel.textContent='\uc815\uc158 \uc628\ub3c4 Tj';\n      outValue.textContent = fmt(Tj) + ' \u2103';\n      outValue.style.color = (Tj>125)?'#dc2626':((Tj>100)?'#f59e0b':'#1d4ed8');\n      outFormula.textContent = 'Pth = ' + fmt(Pin) + 'W \u00d7 (1\u2212' + eta.toFixed(2) + ') = ' + fmt(Pth) + 'W\\n\u03a3Rth = ' + RjcEff.toFixed(3) + '+' + RcsEff.toFixed(3) + '+' + Rtim.toFixed(3) + '+' + Rsa.toFixed(3) + ' = ' + sumR.toFixed(3) + ' \u2103\/W\\nTj = ' + Ta + ' + ' + fmt(Pth) + ' \u00d7 ' + sumR.toFixed(3) + ' = ' + fmt(Tj) + ' \u2103';\n      var note = (Tj>125) ? '\u26a0 \uc77c\ubc18\uc801\uc778 Tj_max(125\u2103 \ubd80\uadfc)\ub97c \ucd08\uacfc\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud788\ud2b8\uc2f1\ud06c\ub098 TIM\uc744 \uc7ac\uac80\ud1a0\ud558\uc138\uc694.' :\n                 (Tj>100) ? '\uc8fc\uc758: \uc5ec\uc720\uac00 \ud06c\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc2e4\uc0ac\uc6a9 \ud658\uacbd(\ubc00\ud3d0, \uace0\uc628)\uc744 \ud568\uaed8 \uace0\ub824\ud558\uc138\uc694.' :\n                 '\uc5ec\uc720\uac00 \uc788\ub294 \ud3b8\uc785\ub2c8\ub2e4. \ub2e4\ub9cc \uc2e4\uc81c Tj_max \uae30\uc900\uc740 \uc0ac\uc6a9 LED\uc758 \ub370\uc774\ud130\uc2dc\ud2b8\ub97c \ud655\uc778\ud558\uc138\uc694.';\n      outSub.textContent = note;\n    } else {\n      var Tjt=parseFloat(el.scTjt.value);\n      if (!(Tjt>Ta)) { outValue.textContent='\ubaa9\ud45c Tj\ub294 \uc8fc\uc704 \uc628\ub3c4\ubcf4\ub2e4 \ub192\uc544\uc57c \ud569\ub2c8\ub2e4'; outFormula.textContent=''; outSub.textContent=''; return; }\n      var allow = (Tjt-Ta)\/Pth - (RjcEff+RcsEff+Rtim);\n      outLabel.textContent='\ud544\uc694\ud55c \ud788\ud2b8\uc2f1\ud06c \uc5f4\uc800\ud56d Rth s-a';\n      if (allow<=0){\n        outValue.textContent='\ubd88\uac00\ub2a5 (\uc870\uac74 \uc644\ud654 \ud544\uc694)';\n        outValue.style.color='#dc2626';\n        outFormula.textContent = 'Pth = ' + fmt(Pth) + 'W, \uc774\ubbf8 \uc0ac\uc6a9\ud55c Rth(jc+cs+TIM) = ' + (RjcEff+RcsEff+Rtim).toFixed(3) + ' \u2103\/W\\n\uc774 \uac12\ub9cc\uc73c\ub85c \ubaa9\ud45c Tj\ub97c \ucd08\uacfc\ud569\ub2c8\ub2e4.';\n        outSub.textContent = '\uc804\ub958\ub97c \ub0ae\ucd94\uac70\ub098, \uad11\ud6a8\uc728\uc774 \ub354 \uc88b\uc740 LED, \ub354 \ub0ae\uc740 Rth\uc758 TIM\uc744 \uac80\ud1a0\ud558\uc138\uc694.';\n      } else {\n        outValue.textContent = 'Rth \u2264 ' + allow.toFixed(2) + ' \u2103\/W';\n        outValue.style.color='#1d4ed8';\n        outFormula.textContent = 'Rth_sa \u2264 (' + Tjt + '\u2212' + Ta + ') \u00f7 ' + fmt(Pth) + ' \u2212 (' + RjcEff.toFixed(3) + '+' + RcsEff.toFixed(3) + '+' + Rtim.toFixed(3) + ')\\n= ' + allow.toFixed(3) + ' \u2103\/W';\n        outSub.textContent = '\uc774 \uac12 \uc774\ud558\uc758 \uc5f4\uc800\ud56d\uc744 \uac00\uc9c4 \ud788\ud2b8\uc2f1\ud06c\ub97c \uc120\ud0dd\ud558\uba74 \ubaa9\ud45c \uc628\ub3c4\ub97c \ub9cc\uc871\ud569\ub2c8\ub2e4.';\n      }\n    }\n  }\n\n  for (var i=0;i<modeBtns.length;i++){\n    modeBtns[i].addEventListener('click', function(){\n      mode = parseInt(this.getAttribute('data-scmode'),10);\n      paintModes(); calc();\n    });\n  }\n  for (var j=0;j<taBtns.length;j++){\n    taBtns[j].addEventListener('click', function(){\n      el.scTa.value = this.getAttribute('data-scta');\n      calc();\n    });\n  }\n  for (var k=0;k<ids.length;k++){ el[ids[k]].addEventListener('input', calc); }\n\n  paintModes(); calc();\n})();\n<\/script>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"510\" src=\"https:\/\/steelcrucian.com\/wp-content\/uploads\/2026\/09\/thermcalc-01-two-modes-1024x510.png\" alt=\"\" class=\"wp-image-2573\" srcset=\"https:\/\/steelcrucian.com\/wp-content\/uploads\/2026\/09\/thermcalc-01-two-modes-1024x510.png 1024w, https:\/\/steelcrucian.com\/wp-content\/uploads\/2026\/09\/thermcalc-01-two-modes-300x150.png 300w, https:\/\/steelcrucian.com\/wp-content\/uploads\/2026\/09\/thermcalc-01-two-modes-766x382.png 766w, https:\/\/steelcrucian.com\/wp-content\/uploads\/2026\/09\/thermcalc-01-two-modes.png 1232w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2460 \uc815\uc158 \uc628\ub3c4 \uacc4\uc0b0<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">LED \uc0ac\uc591(Vf, If, \uac1c\uc218, \uad11\ud6a8\uc728)\uacfc \uc5f4\uc800\ud56d \uacbd\ub85c 4\uad6c\uac04, \uc8fc\uc704 \uc628\ub3c4\ub97c \ub123\uc73c\uba74 \uc815\uc158 \uc628\ub3c4\uac00 \ub098\uc635\ub2c8\ub2e4. <strong>\uc9c0\uae08 \uc124\uacc4\uac00 \uc548\uc804\ud55c\uc9c0 \ud655\uc778<\/strong>\ud560 \ub54c \uc501\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2461 \ud544\uc694 \ud788\ud2b8\uc2f1\ud06c \uc5ed\uc0b0<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ubaa9\ud45c \uc815\uc158 \uc628\ub3c4\ub97c \uc815\ud574\ub450\uace0, \ud788\ud2b8\uc2f1\ud06c\ub97c \uc81c\uc678\ud55c \ub098\uba38\uc9c0 \uc870\uac74\uc744 \ub123\uc73c\uba74 <strong>\ud5c8\uc6a9\ub418\ub294 \ud788\ud2b8\uc2f1\ud06c \uc5f4\uc800\ud56d \uc0c1\ud55c<\/strong>\uc774 \ub098\uc635\ub2c8\ub2e4. \ubd80\ud488\uc744 \uace0\ub974\uae30 <strong>\uc804\uc5d0<\/strong> \uc2a4\ud399\uc744 \uc815\ud560 \ub54c \uc501\ub2c8\ub2e4.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u26a0\ufe0f <strong>\uc774\ub860 \ubaa8\ub378\uc785\ub2c8\ub2e4.<\/strong> LED \uac1c\uccb4 \ud3b8\ucc28, TIM \uc811\ucd09 \uc555\ub825, \uc2e4\uc81c \uacf5\uae30 \ud750\ub984\uc740 \ubc18\uc601\ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc124\uacc4 \ucd08\uae30 \uac80\ud1a0\uc6a9\uc73c\ub85c \uc4f0\uc2dc\uace0, \ucd5c\uc885 \ud310\ub2e8\uc740 \uc2e4\uce21\uc73c\ub85c \ud558\uc138\uc694.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%F0%9F%93%90_%EC%9E%85%EB%A0%A5%EA%B0%92%EC%9D%80_%EC%96%B4%EB%94%94%EC%84%9C_%EA%B5%AC%ED%95%98%EB%82%98\"><\/span>\ud83d\udcd0 \uc785\ub825\uac12\uc740 \uc5b4\ub514\uc11c \uad6c\ud558\ub098<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\uc785\ub825<\/th><th>\ucd9c\ucc98<\/th><\/tr><\/thead><tbody><tr><td>Vf, If<\/td><td>LED \ub370\uc774\ud130\uc2dc\ud2b8<\/td><\/tr><tr><td>LED \uac1c\uc218<\/td><td>\uc124\uacc4 \uc911\uc778 \ubaa8\ub4c8\uc758 \ubcd1\ub82c \uac1c\uc218<\/td><\/tr><tr><td>\uad11\ud6a8\uc728<\/td><td>\ub370\uc774\ud130\uc2dc\ud2b8 \ub610\ub294 \ubcf4\uc218\uc801\uc73c\ub85c 20~30% \uac00\uc815<\/td><\/tr><tr><td>Rth j-c<\/td><td>LED \ub370\uc774\ud130\uc2dc\ud2b8 (\uac1c\ub2f9 \uac12, \uacc4\uc0b0\uae30\uac00 \uac1c\uc218\ub85c \ub098\ub220 \ucc98\ub9ac)<\/td><\/tr><tr><td>Rth c-s<\/td><td>\uae30\ud310\u00b7\uc194\ub354\ub9c1 \uc2a4\ud399 \ub610\ub294 \uacbd\ud5d8\uac12<\/td><\/tr><tr><td>TIM \uc5f4\uc800\ud56d<\/td><td>TIM \uc120\uc815 \uac00\uc774\ub4dc\uc758 Rth = BLT \u00f7 (k\u00d7A)\ub85c \uc9c1\uc811 \uacc4\uc0b0\ud558\uac70\ub098 \uc81c\uc870\uc0ac \uacf5\ud45c\uac12<\/td><\/tr><tr><td>\ud788\ud2b8\uc2f1\ud06c Rth s-a<\/td><td>\ud788\ud2b8\uc2f1\ud06c \uce74\ud0c8\ub85c\uadf8 (\u2460\ubc88 \ubaa8\ub4dc)<\/td><\/tr><tr><td>\ubaa9\ud45c Tj<\/td><td>\uc0ac\uc6a9 LED\uc758 Tj_max\uc5d0\uc11c \uc5ec\uc720(\ubcf4\ud1b5 10~20\u2103)\ub97c \ube80 \uac12<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\ud83d\udccc <strong>LED\uac00 \uc5ec\ub7ec \uac1c\uba74 Rth j-c\uc640 Rth c-s\ub294 \uac1c\ub2f9 \uac12\uc744 \uadf8\ub300\ub85c \uc785\ub825\ud558\uc138\uc694.<\/strong> \uacc4\uc0b0\uae30\uac00 \ub0b4\ubd80\uc5d0\uc11c \uac1c\uc218\ub85c \ub098\ub220 \ubcd1\ub82c \ud6a8\uacfc\ub97c \ubc18\uc601\ud569\ub2c8\ub2e4. <a href=\"https:\/\/steelcrucian.com\/led-thermal-design-basics\/\">\uc5f4\uc124\uacc4 \uae00<\/a>\uc5d0\uc11c \ub2e4\ub8ec \uac83\uacfc \uac19\uc740 \ubc29\uc2dd\uc785\ub2c8\ub2e4.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%F0%9F%A7%AE_%EA%B2%80%EC%A6%9D_%EC%98%88%EC%8B%9C_%E2%80%93_%EC%9D%B4_%EA%B3%84%EC%82%B0%EC%9D%B4_%EC%99%9C_%ED%95%84%EC%9A%94%ED%95%9C%EC%A7%80\"><\/span>\ud83e\uddee \uac80\uc99d \uc608\uc2dc \u2013 \uc774 \uacc4\uc0b0\uc774 \uc65c \ud544\uc694\ud55c\uc9c0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uac19\uc740 LED \ubaa8\ub4c8(24\uac1c, 3.1V\u00d70.7A)\uc5d0\uc11c <strong>\uad11\ud6a8\uc728\ub9cc \ub2e4\ub974\uac8c<\/strong> \ub123\uc5b4\ubcf4\uba74 \uc774\ub807\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1000\" src=\"https:\/\/steelcrucian.com\/wp-content\/uploads\/2026\/09\/thermcalc-02-efficiency-scan-3-1024x1000.png\" alt=\"\" class=\"wp-image-2577\" srcset=\"https:\/\/steelcrucian.com\/wp-content\/uploads\/2026\/09\/thermcalc-02-efficiency-scan-3-1024x1000.png 1024w, https:\/\/steelcrucian.com\/wp-content\/uploads\/2026\/09\/thermcalc-02-efficiency-scan-3-300x293.png 300w, https:\/\/steelcrucian.com\/wp-content\/uploads\/2026\/09\/thermcalc-02-efficiency-scan-3-767x749.png 767w, https:\/\/steelcrucian.com\/wp-content\/uploads\/2026\/09\/thermcalc-02-efficiency-scan-3.png 1315w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\ud788\ud2b8\uc2f1\ud06c Rth<\/th><th>\uad11\ud6a8\uc728 20%<\/th><th>\uad11\ud6a8\uc728 30%<\/th><th>\uad11\ud6a8\uc728 40%<\/th><\/tr><\/thead><tbody><tr><td>2.0 \u2103\/W<\/td><td>122.9\u2103<\/td><td>108.7\u2103<\/td><td>94.6\u2103<\/td><\/tr><tr><td>1.2 \u2103\/W<\/td><td>87.6\u2103<\/td><td>79.2\u2103<\/td><td>70.9\u2103<\/td><\/tr><tr><td>0.6 \u2103\/W<\/td><td>61.9\u2103<\/td><td>57.4\u2103<\/td><td>52.8\u2103<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\ud83d\udccc \uacc4\uc0b0\uae30\uc640 \ub3d9\uc77c\ud55c \uacf5\uc2dd\uc73c\ub85c Python \uac80\uc99d\ud55c \uac12\uc785\ub2c8\ub2e4.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uac19\uc740 \ud788\ud2b8\uc2f1\ud06c, \uac19\uc740 \uc804\ub958\uc778\ub370 \uad11\ud6a8\uc728 \ucd94\uc815\uc744 20%\ub85c \ud558\ub290\ub0d0 40%\ub85c \ud558\ub290\ub0d0\uc5d0 \ub530\ub77c \uc815\uc158 \uc628\ub3c4\uac00 28\u2103\uae4c\uc9c0 \ubc8c\uc5b4\uc9d1\ub2c8\ub2e4.<\/strong> \ub370\uc774\ud130\uc2dc\ud2b8\uc5d0 \uad11\ud6a8\uc728\uc774 \uba85\uc2dc\ub418\uc5b4 \uc788\uc9c0 \uc54a\ub2e4\uba74, <strong>\ubcf4\uc218\uc801\uc73c\ub85c \ub0ae\uc740 \uac12(20~30%)\uc744 \uac00\uc815<\/strong>\ud558\uace0 \uacc4\uc0b0\ud558\ub294 \uac83\uc774 \uc548\uc804\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%F0%9F%9B%A0%EF%B8%8F_%ED%99%9C%EC%9A%A9_%EC%8B%9C%EB%82%98%EB%A6%AC%EC%98%A4\"><\/span>\ud83d\udee0\ufe0f \ud65c\uc6a9 \uc2dc\ub098\ub9ac\uc624<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uc2dc\ub098\ub9ac\uc624 1. \uae30\uc874 \uc124\uacc4 \uac80\uc99d<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\ubbf8 \uc815\ud574\uc9c4 LED\u00b7\ud788\ud2b8\uc2f1\ud06c\u00b7TIM\uc774 \uc788\ub2e4\uba74 \u2460\ubc88 \ubaa8\ub4dc\uc5d0 \uadf8\ub300\ub85c \uc785\ub825\ud558\uc138\uc694. \uacb0\uacfc\uac00 LED\uc758 Tj_max\uc5d0 \uadfc\uc811\ud558\uac70\ub098 \ucd08\uacfc\ud55c\ub2e4\uba74 \uc7ac\uac80\ud1a0\uac00 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uc2dc\ub098\ub9ac\uc624 2. \ud788\ud2b8\uc2f1\ud06c \uad6c\ub9e4 \uc804 \uc2a4\ud399 \uacb0\uc815<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2461\ubc88 \ubaa8\ub4dc\ub85c \ubaa9\ud45c Tj(\uc608: Tj_max\uc5d0\uc11c 20\u2103 \uc5ec\uc720)\ub97c \ub123\uace0 \ud544\uc694\ud55c Rth \uc0c1\ud55c\uc744 \uad6c\ud558\uc138\uc694. \uc774 \uc22b\uc790\ub97c \ub4e4\uace0 \ud788\ud2b8\uc2f1\ud06c \uce74\ud0c8\ub85c\uadf8\ub97c \ubcf4\uba74 \ud6c4\ubcf4\ub97c \ube60\ub974\uac8c \uc881\ud790 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uc2dc\ub098\ub9ac\uc624 3. TIM \uad50\uccb4 \uac80\ud1a0<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2460\ubc88 \ubaa8\ub4dc\uc5d0\uc11c TIM \uc5f4\uc800\ud56d\ub9cc \ubc14\uafd4\uac00\uba70 \uc815\uc158 \uc628\ub3c4 \ubcc0\ud654\ub97c \ud655\uc778\ud558\uc138\uc694. TIM \uc120\uc815 \uac00\uc774\ub4dc\uc5d0\uc11c \ub2e4\ub8ec \uac83\ucc98\ub7fc, \ub450\uaed8 \ucc28\uc774\uac00 \uc608\uc0c1\ubcf4\ub2e4 \ud070 \uc601\ud5a5\uc744 \uc904 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uc2dc\ub098\ub9ac\uc624 4. \ubc00\ud3d0 \uae30\uad6c \uac80\ud1a0<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc8fc\uc704 \uc628\ub3c4\ub97c 25\u2103\uc5d0\uc11c 45\u2103(\ube60\ub978 \uc870\uac74 \ubc84\ud2bc)\ub85c \ubc14\uafd4 \uac19\uc740 \uc124\uacc4\uac00 \ubc00\ud3d0 \uae30\uad6c\uc5d0\uc11c\ub3c4 \ubc84\ud2f0\ub294\uc9c0 \ud655\uc778\ud558\uc138\uc694.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E2%9A%A0%EF%B8%8F_%EA%B3%84%EC%82%B0%EA%B8%B0%EA%B0%80_%EB%8B%A4%EB%A3%A8%EC%A7%80_%EB%AA%BB%ED%95%98%EB%8A%94_%EA%B2%83\"><\/span>\u26a0\ufe0f \uacc4\uc0b0\uae30\uac00 \ub2e4\ub8e8\uc9c0 \ubabb\ud558\ub294 \uac83<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>LED \uac04 \uc0c1\ud638 \uac00\uc5f4<\/strong>: \uc5ec\ub7ec LED\ub97c \ub2e8\uc21c \ubcd1\ub82c\ub85c \uacc4\uc0b0\ud558\uc9c0\ub9cc, \uc2e4\uc81c\ub85c\ub294 \uc778\uc811 LED\uc758 \uc5f4\uc774 \uae30\ud310\uc744 \ud1b5\ud574 \uc11c\ub85c \uc601\ud5a5\uc744 \uc90d\ub2c8\ub2e4. \ubc00\uc9d1 \ubc30\uce58\uc77c\uc218\ub85d \uc2e4\uc81c \uc628\ub3c4\uac00 \uacc4\uc0b0\uac12\ubcf4\ub2e4 \ub192\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>TIM \uc811\ucd09 \uc555\ub825<\/strong>: \uac19\uc740 TIM\uc774\ub77c\ub3c4 \uc870\ub9bd \uc555\ub825\uc5d0 \ub530\ub77c \uc2e4\uc81c \uc5f4\uc800\ud56d\uc774 \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\uc2dc\uac04\uc5d0 \ub530\ub978 \ubcc0\ud654<\/strong>: \uba3c\uc9c0, TIM \uc5f4\ud654 \ub4f1\uc73c\ub85c \uc2e4\uc0ac\uc6a9 \uc911 \uc5f4\uc800\ud56d\uc740 \uc11c\uc11c\ud788 \ub098\ube60\uc9d1\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\ube44\uc120\ud615 \uad11\ud6a8\uc728<\/strong>: \uc2e4\uc81c\ub85c\ub294 \uc804\ub958\uc640 \uc628\ub3c4\uc5d0 \ub530\ub77c \uad11\ud6a8\uc728 \uc790\uccb4\uac00 \ubcc0\ud569\ub2c8\ub2e4. \uacc4\uc0b0\uae30\ub294 \uace0\uc815\uac12\uc73c\ub85c \uac00\uc815\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\ud83d\udca1 <strong>\uc5ec\uc720\ub97c \ub450\uace0 \uc124\uacc4\ud558\uc138\uc694.<\/strong> \uacc4\uc0b0\uac12\uacfc \ubaa9\ud45c Tj_max \uc0ac\uc774\uc5d0 \ucd5c\uc18c 10~20\u2103\uc758 \uc5ec\uc720\ub97c \ub450\uba74 \uc704 \ubcc0\uc218\ub4e4\uc744 \uc5b4\ub290 \uc815\ub3c4 \ud761\uc218\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E2%9C%85_%ED%95%9C%EB%88%88%EC%97%90_%EC%A0%95%EB%A6%AC\"><\/span>\u2705 \ud55c\ub208\uc5d0 \uc815\ub9ac<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\ud56d\ubaa9<\/th><th>\ub0b4\uc6a9<\/th><\/tr><\/thead><tbody><tr><td>\uae30\ubcf8 \uacf5\uc2dd<\/td><td>Tj = Ta + Pth \u00d7 \u03a3Rth<\/td><\/tr><tr><td>\ubc1c\uc5f4 \uacf5\uc2dd<\/td><td>Pth = Vf \u00d7 If \u00d7 \uac1c\uc218 \u00d7 (1 \u2212 \uad11\ud6a8\uc728)<\/td><\/tr><tr><td>\ubcd1\ub82c \uc5f4\uc800\ud56d<\/td><td>Rth j-c, Rth c-s\ub294 \uac1c\uc218\ub85c \ub098\ub214<\/td><\/tr><tr><td>\uc5ed\uc0b0 \uacf5\uc2dd<\/td><td>Rth_sa \u2264 (Tj_\ubaa9\ud45c\u2212Ta)\/Pth \u2212 (Rjc+Rcs+Rtim)<\/td><\/tr><tr><td>\uad11\ud6a8\uc728 \uc601\ud5a5<\/td><td>20%\u219240% \uac00\uc815 \ucc28\uc774\ub9cc\uc73c\ub85c \ucd5c\ub300 28\u2103 \ucc28\uc774<\/td><\/tr><tr><td>\ubbf8\ubc18\uc601 \uc694\uc18c<\/td><td>LED \uc0c1\ud638 \uac00\uc5f4, \uc811\ucd09 \uc555\ub825, \uc5f4\ud654, \ube44\uc120\ud615 \ud6a8\uc728<\/td><\/tr><tr><td>\uad8c\uc7a5 \uc5ec\uc720<\/td><td>\ubaa9\ud45c Tj_max \ub300\ube44 10~20\u2103<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%F0%9F%8E%AF_%EC%98%A4%EB%8A%98_%EB%B0%94%EB%A1%9C_%ED%95%B4%EB%B3%BC_%EA%B2%83\"><\/span>\ud83c\udfaf \uc624\ub298 \ubc14\ub85c \ud574\ubcfc \uac83<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\ud604\uc7ac \uc4f0\uace0 \uacc4\uc2e0 LED\uc640 \ud788\ud2b8\uc2f1\ud06c \uc2a4\ud399\uc744 \uacc4\uc0b0\uae30 \u2460\ubc88\uc5d0 \ub123\uc5b4 <strong>\uc815\uc158 \uc628\ub3c4\uac00 Tj_max \ub300\ube44 \uba87 \ub3c4 \uc5ec\uc720 \uc788\ub294\uc9c0<\/strong> \ud655\uc778\ud558\uc138\uc694.<\/li>\n\n\n\n<li>\ud788\ud2b8\uc2f1\ud06c\ub97c \uc544\uc9c1 \uc548 \uc815\ud558\uc168\ub2e4\uba74 \u2461\ubc88\uc73c\ub85c <strong>\ud544\uc694\ud55c Rth \uc0c1\ud55c<\/strong>\uc744 \uba3c\uc800 \uad6c\ud558\uace0 \uce74\ud0c8\ub85c\uadf8\ub97c \ubcf4\uc138\uc694.<\/li>\n\n\n\n<li>\uad11\ud6a8\uc728\uc744 \ubaa8\ub974\uc2e0\ub2e4\uba74 <strong>20%\uc640 40%\ub85c \uac01\uac01 \uacc4\uc0b0<\/strong>\ud574 \ubc94\uc704\ub97c \ud655\uc778\ud558\uc138\uc694. \uadf8 \ubc94\uc704\uac00 \uc124\uacc4 \uc5ec\uc720\ub97c \uc5bc\ub9c8\ub098 \ub46c\uc57c \ud558\ub294\uc9c0 \uc54c\ub824\uc90d\ub2c8\ub2e4.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%F0%9F%93%9A_%ED%95%A8%EA%BB%98_%EC%9D%BD%EC%9C%BC%EB%A9%B4_%EC%A2%8B%EC%9D%80_%EA%B8%80\"><\/span>\ud83d\udcda \ud568\uaed8 \uc77d\uc73c\uba74 \uc88b\uc740 \uae00<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udd25 <a href=\"https:\/\/steelcrucian.com\/led-thermal-design-basics\/\">LED \uc5f4\uc124\uacc4 \uae30\ucd08 \u2013 \uc815\uc158\uc628\ub3c4\uc640 \uc5f4\uc800\ud56d<\/a> \u2014 \uc774 \uacc4\uc0b0\uae30\uc758 \ubaa8\ub4e0 \uacf5\uc2dd\uc774 \ub098\uc624\ub294 \uc6d0\ub9ac\uc785\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\ud83d\udd27 \ud788\ud2b8\uc2f1\ud06c\uc640 \ubc29\uc5f4 \uc18c\uc7ac(TIM) \uc120\uc815 (\ubc1c\ud589 \ud6c4 \ub9c1\ud06c \uc5f0\uacb0) \u2014 TIM \uc5f4\uc800\ud56d\uc744 \uc9c1\uc811 \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uacfc \uc7ac\uc9c8\ubcc4 \ube44\uad50\uc785\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\u23f3 <a href=\"https:\/\/steelcrucian.com\/led-lumen-maintenance-l70\/\">\uad11\uc18d\uc720\uc9c0\uc728(L70\/L80)\uacfc LED \uc218\uba85<\/a> \u2014 \uacc4\uc0b0\uae30\ub85c \ub0ae\ucd98 \uc628\ub3c4\uac00 \uc2e4\uc81c\ub85c \uc218\uba85\uc5d0 \uc5b4\ub5bb\uac8c \ubc18\uc601\ub418\ub294\uc9c0 \ub2e4\ub8f9\ub2c8\ub2e4.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>LED \uc5f4\uc124\uacc4 \uae30\ucd08\uc5d0\uc11c \uc815\uc158 \uc628\ub3c4 \uacf5\uc2dd\uc744 \uc815\ub9ac\ud588\uc2b5\ub2c8\ub2e4. \uc2dd\uc740 \uac04\ub2e8\ud55c\ub370, \ub9e4\ubc88 \uc190\uc73c\ub85c \uacc4\uc0b0\ud558\ub824\uba74 \uadc0\ucc2e\uace0 \uc2e4\uc218\ud558\uae30 \uc27d\uc2b5\ub2c8\ub2e4. \ud2b9\ud788 **&#8221;\ubaa9\ud45c \uc628\ub3c4\ub97c \ub9cc\uc871\ud558\ub824\uba74 \ud788\ud2b8\uc2f1\ud06c\uac00 \uc5bc\ub9c8\ub098 \uc88b\uc544\uc57c \ud558\ub098&#8221;**\ub97c \uac70\uafb8\ub85c \uad6c\ud558\ub294 \uacc4\uc0b0\uc740 \ud56d\uc774 \ub9ce\uc544 \ud5f7\uac08\ub9bd\ub2c8\ub2e4. \uc774 \uae00\uc758 \uacc4\uc0b0\uae30\ub294 \ub450 \ubc29\ud5a5\uc744 \ubaa8\ub450 \uc9c0\uc6d0\ud569\ub2c8\ub2e4. \ud83d\udca1 \uacf5\uc2dd\uc758 \uc6d0\ub9ac\ub294 LED \uc5f4\uc124\uacc4 \uae30\ucd08\uc5d0, TIM\ubcc4 \uc5f4\uc800\ud56d \uac12\uc740 \ud788\ud2b8\uc2f1\ud06c\uc640 TIM \uc120\uc815 \uac00\uc774\ub4dc\uc5d0 \uc815\ub9ac\ud588\uc2b5\ub2c8\ub2e4. \uc774 \uae00\uc740 \uadf8 \ub450 \uae00\uc758&hellip;&nbsp;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":"","jetpack_post_was_ever_published":false},"categories":[72],"tags":[877,913,920,919,918,878,78,879],"class_list":["post-2571","post","type-post","status-publish","format-standard","hentry","category-optics","tag-led","tag-tim","tag-920","tag-919","tag-918","tag-878","tag-78","tag-879"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/steelcrucian.com\/wp-json\/wp\/v2\/posts\/2571","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/steelcrucian.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/steelcrucian.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/steelcrucian.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/steelcrucian.com\/wp-json\/wp\/v2\/comments?post=2571"}],"version-history":[{"count":1,"href":"https:\/\/steelcrucian.com\/wp-json\/wp\/v2\/posts\/2571\/revisions"}],"predecessor-version":[{"id":2578,"href":"https:\/\/steelcrucian.com\/wp-json\/wp\/v2\/posts\/2571\/revisions\/2578"}],"wp:attachment":[{"href":"https:\/\/steelcrucian.com\/wp-json\/wp\/v2\/media?parent=2571"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelcrucian.com\/wp-json\/wp\/v2\/categories?post=2571"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelcrucian.com\/wp-json\/wp\/v2\/tags?post=2571"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}