PCB \u5e03\u7ebf\u5bbd\u5ea6 & \u7ebf\u963b\u8ba1\u7b97\u5668<\/title>\n <style>\n \/* \u5168\u5c40\u91cd\u7f6e\uff08\u9650\u5b9a\u5728 .pcb-wrap \u5185\u90e8\uff09 *\/\n .pcb-wrap * {\n margin: 0;\n padding: 0;\n box-sizing: border-box;\n }\n .pcb-wrap {\n font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;\n background: transparent;\n max-width: 760px;\n margin: 20px auto;\n padding: 0 16px;\n }\n .pcb-wrap .container {\n background: #ffffff;\n border-radius: 28px;\n box-shadow: 0 20px 60px rgba(0, 20, 40, 0.08), 0 8px 24px rgba(0, 20, 40, 0.04);\n padding: 32px 28px;\n border: 1px solid #edf2f7;\n }\n .pcb-wrap .header {\n display: flex;\n align-items: center;\n justify-content: space-between;\n margin-bottom: 28px;\n flex-wrap: wrap;\n gap: 12px;\n }\n .pcb-wrap .header h1 {\n font-size: 24px;\n font-weight: 600;\n color: #0b1a2e;\n letter-spacing: -0.3px;\n display: flex;\n align-items: center;\n gap: 10px;\n margin: 0;\n }\n .pcb-wrap .header h1 span {\n background: #eef3fa;\n padding: 4px 14px;\n border-radius: 40px;\n font-size: 13px;\n font-weight: 500;\n color: #2c5f8a;\n }\n .pcb-wrap .form-group {\n margin-bottom: 16px;\n display: flex;\n flex-wrap: wrap;\n align-items: center;\n gap: 8px 16px;\n }\n .pcb-wrap .form-group label {\n font-weight: 500;\n color: #2c4058;\n min-width: 70px;\n }\n .pcb-wrap .form-group .field {\n flex: 1;\n min-width: 120px;\n display: flex;\n align-items: center;\n gap: 6px;\n }\n .pcb-wrap .form-group input,\n .pcb-wrap .form-group select {\n padding: 8px 12px;\n border: 1px solid #d0ddee;\n border-radius: 10px;\n font-size: 15px;\n background: #f9fbfd;\n transition: border-color 0.15s;\n width: 100%;\n font-family: inherit;\n }\n .pcb-wrap .form-group input:focus,\n .pcb-wrap .form-group select:focus {\n outline: none;\n border-color: #b6cde3;\n box-shadow: 0 0 0 3px rgba(182, 205, 227, 0.2);\n }\n .pcb-wrap .form-group .unit-hint {\n color: #7a8b9f;\n font-size: 14px;\n white-space: nowrap;\n }\n .pcb-wrap .form-row {\n display: flex;\n flex-wrap: wrap;\n gap: 16px 24px;\n margin-bottom: 12px;\n }\n .pcb-wrap .form-row .form-group {\n flex: 1;\n min-width: 150px;\n margin-bottom: 0;\n }\n .pcb-wrap .action-bar {\n display: flex;\n flex-wrap: wrap;\n gap: 10px;\n margin: 8px 0 24px;\n justify-content: center;\n }\n .pcb-wrap .action-btn {\n padding: 10px 28px;\n border: none;\n border-radius: 40px;\n font-size: 15px;\n font-weight: 500;\n background: #edf2f8;\n color: #1d3b5a;\n cursor: pointer;\n transition: background 0.15s, transform 0.1s, box-shadow 0.15s;\n display: inline-flex;\n align-items: center;\n gap: 6px;\n }\n .pcb-wrap .action-btn:hover {\n background: #dde6f0;\n box-shadow: 0 2px 8px rgba(0, 20, 40, 0.06);\n }\n .pcb-wrap .action-btn:active {\n transform: scale(0.96);\n }\n .pcb-wrap .action-btn.primary {\n background: #1a3d5e;\n color: #ffffff;\n }\n .pcb-wrap .action-btn.primary:hover {\n background: #0f2e4a;\n box-shadow: 0 4px 14px rgba(20, 60, 120, 0.20);\n }\n .pcb-wrap .result-box {\n background: #f7faff;\n border-radius: 18px;\n padding: 20px 24px;\n border: 1px solid #e3ebf5;\n margin-top: 12px;\n }\n .pcb-wrap .result-box .result-item {\n display: flex;\n justify-content: space-between;\n padding: 8px 0;\n border-bottom: 1px solid #edf2f7;\n font-size: 16px;\n }\n .pcb-wrap .result-box .result-item:last-child {\n border-bottom: none;\n }\n .pcb-wrap .result-box .result-item .label {\n color: #5f6f82;\n }\n .pcb-wrap .result-box .result-item .value {\n font-weight: 600;\n color: #0b1a2e;\n font-family: 'SF Mono', 'Fira Code', monospace;\n }\n .pcb-wrap .footer-bar {\n display: flex;\n justify-content: space-between;\n align-items: center;\n flex-wrap: wrap;\n gap: 12px;\n margin-top: 20px;\n padding-top: 16px;\n border-top: 1px solid #edf2f7;\n font-size: 13px;\n color: #7a8b9f;\n }\n .pcb-wrap .footer-bar .status {\n display: flex;\n align-items: center;\n gap: 10px;\n }\n .pcb-wrap .footer-bar .status .dot {\n display: inline-block;\n width: 8px;\n height: 8px;\n border-radius: 50%;\n background: #b6cde3;\n }\n .pcb-wrap .footer-bar .status .dot.active {\n background: #2a9d6e;\n }\n .pcb-wrap .text-muted {\n color: #8a9bae;\n }\n @media (max-width: 480px) {\n .pcb-wrap .container {\n padding: 20px 16px;\n }\n .pcb-wrap .header h1 {\n font-size: 20px;\n }\n .pcb-wrap .form-group {\n flex-direction: column;\n align-items: stretch;\n }\n .pcb-wrap .form-group label {\n min-width: auto;\n }\n .pcb-wrap .form-row {\n flex-direction: column;\n }\n .pcb-wrap .result-box .result-item {\n flex-wrap: wrap;\n gap: 4px;\n }\n }\n <\/style>\n<\/head>\n<body>\n<div class=\"pcb-wrap\">\n <div class=\"container\">\n <div class=\"header\">\n <h1>\n \u26a1 PCB \u5e03\u7ebf\u5bbd\u5ea6 & \u7ebf\u963b\n <span>IPC-2221<\/span>\n <\/h1>\n <\/div>\n\n \n <div class=\"form-row\">\n <div class=\"form-group\">\n <label for=\"current\">\u7535\u6d41 (A)<\/label>\n <div class=\"field\">\n <input type=\"number\" id=\"current\" value=\"2\" step=\"0.01\" min=\"0.001\" \/>\n <\/div>\n <\/div>\n <div class=\"form-group\">\n <label for=\"tempRise\">\u6e29\u5347 (\u2103)<\/label>\n <div class=\"field\">\n <input type=\"number\" id=\"tempRise\" value=\"10\" step=\"1\" min=\"1\" \/>\n <\/div>\n <\/div>\n <div class=\"form-group\">\n <label for=\"copperThick\">\u94dc\u539a<\/label>\n <div class=\"field\">\n <select id=\"copperThick\">\n <option value=\"0.5\">0.5 oz (0.7 mil)<\/option>\n <option value=\"1\" selected>1 oz (1.37 mil)<\/option>\n <option value=\"2\">2 oz (2.74 mil)<\/option>\n <option value=\"3\">3 oz (4.11 mil)<\/option>\n <option value=\"custom\">\u81ea\u5b9a\u4e49 (mil)<\/option>\n <\/select>\n <input type=\"number\" id=\"customThick\" style=\"display:none; width:80px;\" placeholder=\"mil\" step=\"0.1\" min=\"0.1\" \/>\n <\/div>\n <\/div>\n <\/div>\n\n \n <div class=\"form-row\">\n <div class=\"form-group\">\n <label for=\"layer\">\u8d70\u7ebf\u5c42<\/label>\n <div class=\"field\">\n <select id=\"layer\">\n <option value=\"outer\">\u5916\u5c42 (\u5916\u90e8)<\/option>\n <option value=\"inner\">\u5185\u5c42<\/option>\n <\/select>\n <\/div>\n <\/div>\n <div class=\"form-group\">\n <label for=\"unit\">\u5bbd\u5ea6\u5355\u4f4d<\/label>\n <div class=\"field\">\n <select id=\"unit\">\n <option value=\"mil\">mil<\/option>\n <option value=\"mm\">mm<\/option>\n <\/select>\n <\/div>\n <\/div>\n <div class=\"form-group\">\n <label for=\"length\">\u8d70\u7ebf\u957f\u5ea6<\/label>\n <div class=\"field\">\n <input type=\"number\" id=\"length\" value=\"10\" step=\"0.1\" min=\"0.01\" style=\"flex:2;\" \/>\n <select id=\"lengthUnit\" style=\"flex:1;\">\n <option value=\"mm\">mm<\/option>\n <option value=\"cm\">cm<\/option>\n <option value=\"inch\">inch<\/option>\n <option value=\"m\">m<\/option>\n <\/select>\n <\/div>\n <\/div>\n <\/div>\n\n <div class=\"action-bar\">\n <button class=\"action-btn primary\" id=\"calcBtn\">\u8ba1\u7b97<\/button>\n <button class=\"action-btn\" id=\"resetBtn\">\u91cd\u7f6e\u9ed8\u8ba4<\/button>\n <\/div>\n\n \n <div class=\"result-box\" id=\"resultBox\">\n <div class=\"result-item\">\n <span class=\"label\">\u6240\u9700\u7ebf\u5bbd<\/span>\n <span class=\"value\" id=\"widthResult\">\u2014<\/span>\n <\/div>\n <div class=\"result-item\">\n <span class=\"label\">\u5bf9\u5e94\u94dc\u539a<\/span>\n <span class=\"value\" id=\"thickResult\">\u2014<\/span>\n <\/div>\n <div class=\"result-item\">\n <span class=\"label\">\u516c\u5f0f\u7cfb\u6570 (k)<\/span>\n <span class=\"value\" id=\"kResult\">\u2014<\/span>\n <\/div>\n <div class=\"result-item\">\n <span class=\"label\">\u7ebf\u963b (20\u00b0C)<\/span>\n <span class=\"value\" id=\"resistanceResult\">\u2014<\/span>\n <\/div>\n <\/div>\n\n <div class=\"footer-bar\">\n <div class=\"status\">\n <span class=\"dot\" id=\"statusDot\"><\/span>\n <span id=\"statusText\">\u5c31\u7eea<\/span>\n <\/div>\n <span class=\"text-muted\">\u94dc\u7535\u963b\u7387 1.68e-8 \u03a9\u00b7m<\/span>\n <\/div>\n <\/div>\n<\/div>\n\n<script>\n (function() {\n \"use strict\";\n\n const wrap = document.querySelector(\".pcb-wrap\");\n if (!wrap) return;\n\n \/\/ \u83b7\u53d6\u6240\u6709\u8f93\u5165\u5143\u7d20\n const currentInput = wrap.querySelector(\"#current\");\n const tempRiseInput = wrap.querySelector(\"#tempRise\");\n const copperSelect = wrap.querySelector(\"#copperThick\");\n const customThickInput = wrap.querySelector(\"#customThick\");\n const layerSelect = wrap.querySelector(\"#layer\");\n const unitSelect = wrap.querySelector(\"#unit\");\n const lengthInput = wrap.querySelector(\"#length\");\n const lengthUnitSelect = wrap.querySelector(\"#lengthUnit\");\n\n const calcBtn = wrap.querySelector(\"#calcBtn\");\n const resetBtn = wrap.querySelector(\"#resetBtn\");\n\n const widthResult = wrap.querySelector(\"#widthResult\");\n const thickResult = wrap.querySelector(\"#thickResult\");\n const kResult = wrap.querySelector(\"#kResult\");\n const resistanceResult = wrap.querySelector(\"#resistanceResult\");\n\n const statusText = wrap.querySelector(\"#statusText\");\n const statusDot = wrap.querySelector(\"#statusDot\");\n\n \/\/ \u94dc\u539a\u6620\u5c04 (oz -> mil)\n const ozToMil = {\n \"0.5\": 0.7,\n \"1\": 1.37,\n \"2\": 2.74,\n \"3\": 4.11\n };\n\n \/\/ \u663e\u793a\/\u9690\u85cf\u81ea\u5b9a\u4e49\u94dc\u539a\u8f93\u5165\n copperSelect.addEventListener(\"change\", function() {\n if (this.value === \"custom\") {\n customThickInput.style.display = \"inline-block\";\n } else {\n customThickInput.style.display = \"none\";\n }\n });\n\n \/\/ \u83b7\u53d6\u94dc\u539a (mil)\n function getCopperThickness() {\n const val = copperSelect.value;\n if (val === \"custom\") {\n const c = parseFloat(customThickInput.value);\n if (!isNaN(c) && c > 0) return c;\n else return NaN;\n } else {\n return ozToMil[val] || 1.37;\n }\n }\n\n function getCopperDesc() {\n const val = copperSelect.value;\n if (val === \"custom\") {\n const c = parseFloat(customThickInput.value);\n if (!isNaN(c) && c > 0) return c.toFixed(2) + \" mil\";\n else return \"\u81ea\u5b9a\u4e49 (\u65e0\u6548)\";\n } else {\n return val + \" oz (\" + ozToMil[val] + \" mil)\";\n }\n }\n\n function setStatus(text, isActive) {\n statusText.textContent = text;\n if (isActive) {\n statusDot.classList.add(\"active\");\n } else {\n statusDot.classList.remove(\"active\");\n }\n }\n\n \/\/ \u4e3b\u8ba1\u7b97\u51fd\u6570\n function calculate() {\n \/\/ 1. \u8bfb\u53d6\u53c2\u6570\n const I = parseFloat(currentInput.value);\n const dT = parseFloat(tempRiseInput.value);\n const H_mil = getCopperThickness();\n const layer = layerSelect.value;\n const unit = unitSelect.value;\n const L_val = parseFloat(lengthInput.value);\n const L_unit = lengthUnitSelect.value;\n\n \/\/ \u9a8c\u8bc1\n if (isNaN(I) || I <= 0) { setStatus(\"\u8bf7\u8f93\u5165\u6709\u6548\u7535\u6d41 (>0)\", false); return; }\n if (isNaN(dT) || dT <= 0) { setStatus(\"\u8bf7\u8f93\u5165\u6709\u6548\u6e29\u5347 (>0)\", false); return; }\n if (isNaN(H_mil) || H_mil <= 0) { setStatus(\"\u8bf7\u8f93\u5165\u6709\u6548\u94dc\u539a (>0)\", false); return; }\n if (isNaN(L_val) || L_val <= 0) { setStatus(\"\u8bf7\u8f93\u5165\u6709\u6548\u957f\u5ea6 (>0)\", false); return; }\n\n \/\/ 2. \u8ba1\u7b97\u7ebf\u5bbd (IPC-2221)\n const k = (layer === \"outer\") ? 0.048 : 0.024;\n const dT_exp = Math.pow(dT, 0.44);\n const denominator = k * dT_exp;\n const ratio = I \/ denominator;\n const W_mil = Math.pow(ratio, 1 \/ 0.725) \/ H_mil;\n\n if (!isFinite(W_mil) || W_mil <= 0) {\n setStatus(\"\u8ba1\u7b97\u5f02\u5e38\uff0c\u8bf7\u68c0\u67e5\u53c2\u6570\", false);\n return;\n }\n\n \/\/ 3. \u5355\u4f4d\u8f6c\u6362\uff1a\u5bbd\u5ea6\n let widthVal, widthUnit;\n if (unit === \"mm\") {\n widthVal = W_mil * 0.0254;\n widthUnit = \"mm\";\n } else {\n widthVal = W_mil;\n widthUnit = \"mil\";\n }\n\n \/\/ 4. \u8ba1\u7b97\u7ebf\u963b\uff1aR = \u03c1 * L \/ (W * H)\n \/\/ \u7edf\u4e00\u4e3a\u7c73\u5236\uff1a\u03c1 = 1.68e-8 \u03a9\u00b7m\n const rho = 1.68e-8; \/\/ \u03a9\u00b7m\n \/\/ \u5c06\u5bbd\u5ea6\u3001\u539a\u5ea6\u3001\u957f\u5ea6\u8f6c\u4e3a\u7c73\n const W_m = W_mil * 0.0000254; \/\/ mil -> m\n const H_m = H_mil * 0.0000254; \/\/ mil -> m\n \/\/ \u957f\u5ea6\u8f6c\u7c73\n let L_m;\n switch (L_unit) {\n case \"mm\": L_m = L_val \/ 1000; break;\n case \"cm\": L_m = L_val \/ 100; break;\n case \"inch\": L_m = L_val * 0.0254; break;\n case \"m\": L_m = L_val; break;\n default: L_m = L_val \/ 1000; break;\n }\n\n const area = W_m * H_m; \/\/ m^2\n if (area <= 0) {\n setStatus(\"\u622a\u9762\u79ef\u4e3a\u96f6\uff0c\u65e0\u6cd5\u8ba1\u7b97\u7535\u963b\", false);\n return;\n }\n const R = rho * L_m \/ area; \/\/ \u03a9\n\n \/\/ \u663e\u793a\u7535\u963b\uff0c\u5355\u4f4d\u81ea\u52a8\u9009\u62e9\uff1a\u5c0f\u4e8e0.001\u03a9\u663e\u793am\u03a9\uff0c\u5426\u5219\u663e\u793a\u03a9\n let resDisplay;\n if (R < 0.001) {\n resDisplay = (R * 1000).toFixed(3) + \" m\u03a9\";\n } else {\n resDisplay = R.toFixed(4) + \" \u03a9\";\n }\n\n \/\/ 5. \u66f4\u65b0\u7ed3\u679c\n widthResult.textContent = widthVal.toFixed(3) + \" \" + widthUnit;\n thickResult.textContent = getCopperDesc();\n kResult.textContent = k.toFixed(4);\n resistanceResult.textContent = resDisplay;\n\n setStatus(\"\u8ba1\u7b97\u5b8c\u6210\", true);\n }\n\n \/\/ \u91cd\u7f6e\n function resetDefaults() {\n currentInput.value = \"2\";\n tempRiseInput.value = \"10\";\n copperSelect.value = \"1\";\n customThickInput.style.display = \"none\";\n customThickInput.value = \"\";\n layerSelect.value = \"outer\";\n unitSelect.value = \"mil\";\n lengthInput.value = \"10\";\n lengthUnitSelect.value = \"mm\";\n widthResult.textContent = \"\u2014\";\n thickResult.textContent = \"\u2014\";\n kResult.textContent = \"\u2014\";\n resistanceResult.textContent = \"\u2014\";\n setStatus(\"\u5df2\u91cd\u7f6e\", false);\n }\n\n \/\/ \u4e8b\u4ef6\u7ed1\u5b9a\n calcBtn.addEventListener(\"click\", calculate);\n resetBtn.addEventListener(\"click\", resetDefaults);\n\n \/\/ \u56de\u8f66\u89e6\u53d1\u8ba1\u7b97\n const inputs = [currentInput, tempRiseInput, customThickInput, lengthInput];\n inputs.forEach(function(inp) {\n inp.addEventListener(\"keydown\", function(e) {\n if (e.key === \"Enter\") {\n e.preventDefault();\n calculate();\n }\n });\n });\n\n \/\/ \u521d\u59cb\u5316\u72b6\u6001\n setStatus(\"\u5c31\u7eea \u00b7 \u8f93\u5165\u53c2\u6570\u540e\u70b9\u51fb\u8ba1\u7b97\", false);\n thickResult.textContent = getCopperDesc();\n kResult.textContent = \"\u2014\";\n resistanceResult.textContent = \"\u2014\";\n })();\n<\/script>\n<\/body>\n<\/html>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>PCB \u5e03\u7ebf\u5bbd\u5ea6 & \u7ebf\u963b\u8ba1\u7b97\u5668 \u26a1 PCB \u5e03\u7ebf\u5bbd\u5ea6 & \u7ebf\u963b IPC-2221 \u7535\u6d41 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1360","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/aimc.skyate.com\/index.php\/wp-json\/wp\/v2\/pages\/1360","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aimc.skyate.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/aimc.skyate.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/aimc.skyate.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aimc.skyate.com\/index.php\/wp-json\/wp\/v2\/comments?post=1360"}],"version-history":[{"count":1,"href":"https:\/\/aimc.skyate.com\/index.php\/wp-json\/wp\/v2\/pages\/1360\/revisions"}],"predecessor-version":[{"id":1361,"href":"https:\/\/aimc.skyate.com\/index.php\/wp-json\/wp\/v2\/pages\/1360\/revisions\/1361"}],"wp:attachment":[{"href":"https:\/\/aimc.skyate.com\/index.php\/wp-json\/wp\/v2\/media?parent=1360"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":1360,"date":"2026-07-13T20:24:11","date_gmt":"2026-07-13T12:24:11","guid":{"rendered":"https:\/\/aimc.skyate.com\/?page_id=1360"},"modified":"2026-07-13T20:24:11","modified_gmt":"2026-07-13T12:24:11","slug":"pcb-layout-tools","status":"publish","type":"page","link":"https:\/\/aimc.skyate.com\/index.php\/pcb-layout-tools\/","title":{"rendered":"PCB\u7ebf\u5bbd\u8ba1\u7b97\u5668"},"content":{"rendered":"\n\n\n\n \n \n PCB \u5e03\u7ebf\u5bbd\u5ea6 & \u7ebf\u963b\u8ba1\u7b97\u5668<\/title>\n <style>\n \/* \u5168\u5c40\u91cd\u7f6e\uff08\u9650\u5b9a\u5728 .pcb-wrap \u5185\u90e8\uff09 *\/\n .pcb-wrap * {\n margin: 0;\n padding: 0;\n box-sizing: border-box;\n }\n .pcb-wrap {\n font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;\n background: transparent;\n max-width: 760px;\n margin: 20px auto;\n padding: 0 16px;\n }\n .pcb-wrap .container {\n background: #ffffff;\n border-radius: 28px;\n box-shadow: 0 20px 60px rgba(0, 20, 40, 0.08), 0 8px 24px rgba(0, 20, 40, 0.04);\n padding: 32px 28px;\n border: 1px solid #edf2f7;\n }\n .pcb-wrap .header {\n display: flex;\n align-items: center;\n justify-content: space-between;\n margin-bottom: 28px;\n flex-wrap: wrap;\n gap: 12px;\n }\n .pcb-wrap .header h1 {\n font-size: 24px;\n font-weight: 600;\n color: #0b1a2e;\n letter-spacing: -0.3px;\n display: flex;\n align-items: center;\n gap: 10px;\n margin: 0;\n }\n .pcb-wrap .header h1 span {\n background: #eef3fa;\n padding: 4px 14px;\n border-radius: 40px;\n font-size: 13px;\n font-weight: 500;\n color: #2c5f8a;\n }\n .pcb-wrap .form-group {\n margin-bottom: 16px;\n display: flex;\n flex-wrap: wrap;\n align-items: center;\n gap: 8px 16px;\n }\n .pcb-wrap .form-group label {\n font-weight: 500;\n color: #2c4058;\n min-width: 70px;\n }\n .pcb-wrap .form-group .field {\n flex: 1;\n min-width: 120px;\n display: flex;\n align-items: center;\n gap: 6px;\n }\n .pcb-wrap .form-group input,\n .pcb-wrap .form-group select {\n padding: 8px 12px;\n border: 1px solid #d0ddee;\n border-radius: 10px;\n font-size: 15px;\n background: #f9fbfd;\n transition: border-color 0.15s;\n width: 100%;\n font-family: inherit;\n }\n .pcb-wrap .form-group input:focus,\n .pcb-wrap .form-group select:focus {\n outline: none;\n border-color: #b6cde3;\n box-shadow: 0 0 0 3px rgba(182, 205, 227, 0.2);\n }\n .pcb-wrap .form-group .unit-hint {\n color: #7a8b9f;\n font-size: 14px;\n white-space: nowrap;\n }\n .pcb-wrap .form-row {\n display: flex;\n flex-wrap: wrap;\n gap: 16px 24px;\n margin-bottom: 12px;\n }\n .pcb-wrap .form-row .form-group {\n flex: 1;\n min-width: 150px;\n margin-bottom: 0;\n }\n .pcb-wrap .action-bar {\n display: flex;\n flex-wrap: wrap;\n gap: 10px;\n margin: 8px 0 24px;\n justify-content: center;\n }\n .pcb-wrap .action-btn {\n padding: 10px 28px;\n border: none;\n border-radius: 40px;\n font-size: 15px;\n font-weight: 500;\n background: #edf2f8;\n color: #1d3b5a;\n cursor: pointer;\n transition: background 0.15s, transform 0.1s, box-shadow 0.15s;\n display: inline-flex;\n align-items: center;\n gap: 6px;\n }\n .pcb-wrap .action-btn:hover {\n background: #dde6f0;\n box-shadow: 0 2px 8px rgba(0, 20, 40, 0.06);\n }\n .pcb-wrap .action-btn:active {\n transform: scale(0.96);\n }\n .pcb-wrap .action-btn.primary {\n background: #1a3d5e;\n color: #ffffff;\n }\n .pcb-wrap .action-btn.primary:hover {\n background: #0f2e4a;\n box-shadow: 0 4px 14px rgba(20, 60, 120, 0.20);\n }\n .pcb-wrap .result-box {\n background: #f7faff;\n border-radius: 18px;\n padding: 20px 24px;\n border: 1px solid #e3ebf5;\n margin-top: 12px;\n }\n .pcb-wrap .result-box .result-item {\n display: flex;\n justify-content: space-between;\n padding: 8px 0;\n border-bottom: 1px solid #edf2f7;\n font-size: 16px;\n }\n .pcb-wrap .result-box .result-item:last-child {\n border-bottom: none;\n }\n .pcb-wrap .result-box .result-item .label {\n color: #5f6f82;\n }\n .pcb-wrap .result-box .result-item .value {\n font-weight: 600;\n color: #0b1a2e;\n font-family: 'SF Mono', 'Fira Code', monospace;\n }\n .pcb-wrap .footer-bar {\n display: flex;\n justify-content: space-between;\n align-items: center;\n flex-wrap: wrap;\n gap: 12px;\n margin-top: 20px;\n padding-top: 16px;\n border-top: 1px solid #edf2f7;\n font-size: 13px;\n color: #7a8b9f;\n }\n .pcb-wrap .footer-bar .status {\n display: flex;\n align-items: center;\n gap: 10px;\n }\n .pcb-wrap .footer-bar .status .dot {\n display: inline-block;\n width: 8px;\n height: 8px;\n border-radius: 50%;\n background: #b6cde3;\n }\n .pcb-wrap .footer-bar .status .dot.active {\n background: #2a9d6e;\n }\n .pcb-wrap .text-muted {\n color: #8a9bae;\n }\n @media (max-width: 480px) {\n .pcb-wrap .container {\n padding: 20px 16px;\n }\n .pcb-wrap .header h1 {\n font-size: 20px;\n }\n .pcb-wrap .form-group {\n flex-direction: column;\n align-items: stretch;\n }\n .pcb-wrap .form-group label {\n min-width: auto;\n }\n .pcb-wrap .form-row {\n flex-direction: column;\n }\n .pcb-wrap .result-box .result-item {\n flex-wrap: wrap;\n gap: 4px;\n }\n }\n <\/style>\n<\/head>\n<body>\n<div class=\"pcb-wrap\">\n <div class=\"container\">\n <div class=\"header\">\n <h1>\n \u26a1 PCB \u5e03\u7ebf\u5bbd\u5ea6 & \u7ebf\u963b\n <span>IPC-2221<\/span>\n <\/h1>\n <\/div>\n\n \n <div class=\"form-row\">\n <div class=\"form-group\">\n <label for=\"current\">\u7535\u6d41 (A)<\/label>\n <div class=\"field\">\n <input type=\"number\" id=\"current\" value=\"2\" step=\"0.01\" min=\"0.001\" \/>\n <\/div>\n <\/div>\n <div class=\"form-group\">\n <label for=\"tempRise\">\u6e29\u5347 (\u2103)<\/label>\n <div class=\"field\">\n <input type=\"number\" id=\"tempRise\" value=\"10\" step=\"1\" min=\"1\" \/>\n <\/div>\n <\/div>\n <div class=\"form-group\">\n <label for=\"copperThick\">\u94dc\u539a<\/label>\n <div class=\"field\">\n <select id=\"copperThick\">\n <option value=\"0.5\">0.5 oz (0.7 mil)<\/option>\n <option value=\"1\" selected>1 oz (1.37 mil)<\/option>\n <option value=\"2\">2 oz (2.74 mil)<\/option>\n <option value=\"3\">3 oz (4.11 mil)<\/option>\n <option value=\"custom\">\u81ea\u5b9a\u4e49 (mil)<\/option>\n <\/select>\n <input type=\"number\" id=\"customThick\" style=\"display:none; width:80px;\" placeholder=\"mil\" step=\"0.1\" min=\"0.1\" \/>\n <\/div>\n <\/div>\n <\/div>\n\n \n <div class=\"form-row\">\n <div class=\"form-group\">\n <label for=\"layer\">\u8d70\u7ebf\u5c42<\/label>\n <div class=\"field\">\n <select id=\"layer\">\n <option value=\"outer\">\u5916\u5c42 (\u5916\u90e8)<\/option>\n <option value=\"inner\">\u5185\u5c42<\/option>\n <\/select>\n <\/div>\n <\/div>\n <div class=\"form-group\">\n <label for=\"unit\">\u5bbd\u5ea6\u5355\u4f4d<\/label>\n <div class=\"field\">\n <select id=\"unit\">\n <option value=\"mil\">mil<\/option>\n <option value=\"mm\">mm<\/option>\n <\/select>\n <\/div>\n <\/div>\n <div class=\"form-group\">\n <label for=\"length\">\u8d70\u7ebf\u957f\u5ea6<\/label>\n <div class=\"field\">\n <input type=\"number\" id=\"length\" value=\"10\" step=\"0.1\" min=\"0.01\" style=\"flex:2;\" \/>\n <select id=\"lengthUnit\" style=\"flex:1;\">\n <option value=\"mm\">mm<\/option>\n <option value=\"cm\">cm<\/option>\n <option value=\"inch\">inch<\/option>\n <option value=\"m\">m<\/option>\n <\/select>\n <\/div>\n <\/div>\n <\/div>\n\n <div class=\"action-bar\">\n <button class=\"action-btn primary\" id=\"calcBtn\">\u8ba1\u7b97<\/button>\n <button class=\"action-btn\" id=\"resetBtn\">\u91cd\u7f6e\u9ed8\u8ba4<\/button>\n <\/div>\n\n \n <div class=\"result-box\" id=\"resultBox\">\n <div class=\"result-item\">\n <span class=\"label\">\u6240\u9700\u7ebf\u5bbd<\/span>\n <span class=\"value\" id=\"widthResult\">\u2014<\/span>\n <\/div>\n <div class=\"result-item\">\n <span class=\"label\">\u5bf9\u5e94\u94dc\u539a<\/span>\n <span class=\"value\" id=\"thickResult\">\u2014<\/span>\n <\/div>\n <div class=\"result-item\">\n <span class=\"label\">\u516c\u5f0f\u7cfb\u6570 (k)<\/span>\n <span class=\"value\" id=\"kResult\">\u2014<\/span>\n <\/div>\n <div class=\"result-item\">\n <span class=\"label\">\u7ebf\u963b (20\u00b0C)<\/span>\n <span class=\"value\" id=\"resistanceResult\">\u2014<\/span>\n <\/div>\n <\/div>\n\n <div class=\"footer-bar\">\n <div class=\"status\">\n <span class=\"dot\" id=\"statusDot\"><\/span>\n <span id=\"statusText\">\u5c31\u7eea<\/span>\n <\/div>\n <span class=\"text-muted\">\u94dc\u7535\u963b\u7387 1.68e-8 \u03a9\u00b7m<\/span>\n <\/div>\n <\/div>\n<\/div>\n\n<script>\n (function() {\n \"use strict\";\n\n const wrap = document.querySelector(\".pcb-wrap\");\n if (!wrap) return;\n\n \/\/ \u83b7\u53d6\u6240\u6709\u8f93\u5165\u5143\u7d20\n const currentInput = wrap.querySelector(\"#current\");\n const tempRiseInput = wrap.querySelector(\"#tempRise\");\n const copperSelect = wrap.querySelector(\"#copperThick\");\n const customThickInput = wrap.querySelector(\"#customThick\");\n const layerSelect = wrap.querySelector(\"#layer\");\n const unitSelect = wrap.querySelector(\"#unit\");\n const lengthInput = wrap.querySelector(\"#length\");\n const lengthUnitSelect = wrap.querySelector(\"#lengthUnit\");\n\n const calcBtn = wrap.querySelector(\"#calcBtn\");\n const resetBtn = wrap.querySelector(\"#resetBtn\");\n\n const widthResult = wrap.querySelector(\"#widthResult\");\n const thickResult = wrap.querySelector(\"#thickResult\");\n const kResult = wrap.querySelector(\"#kResult\");\n const resistanceResult = wrap.querySelector(\"#resistanceResult\");\n\n const statusText = wrap.querySelector(\"#statusText\");\n const statusDot = wrap.querySelector(\"#statusDot\");\n\n \/\/ \u94dc\u539a\u6620\u5c04 (oz -> mil)\n const ozToMil = {\n \"0.5\": 0.7,\n \"1\": 1.37,\n \"2\": 2.74,\n \"3\": 4.11\n };\n\n \/\/ \u663e\u793a\/\u9690\u85cf\u81ea\u5b9a\u4e49\u94dc\u539a\u8f93\u5165\n copperSelect.addEventListener(\"change\", function() {\n if (this.value === \"custom\") {\n customThickInput.style.display = \"inline-block\";\n } else {\n customThickInput.style.display = \"none\";\n }\n });\n\n \/\/ \u83b7\u53d6\u94dc\u539a (mil)\n function getCopperThickness() {\n const val = copperSelect.value;\n if (val === \"custom\") {\n const c = parseFloat(customThickInput.value);\n if (!isNaN(c) && c > 0) return c;\n else return NaN;\n } else {\n return ozToMil[val] || 1.37;\n }\n }\n\n function getCopperDesc() {\n const val = copperSelect.value;\n if (val === \"custom\") {\n const c = parseFloat(customThickInput.value);\n if (!isNaN(c) && c > 0) return c.toFixed(2) + \" mil\";\n else return \"\u81ea\u5b9a\u4e49 (\u65e0\u6548)\";\n } else {\n return val + \" oz (\" + ozToMil[val] + \" mil)\";\n }\n }\n\n function setStatus(text, isActive) {\n statusText.textContent = text;\n if (isActive) {\n statusDot.classList.add(\"active\");\n } else {\n statusDot.classList.remove(\"active\");\n }\n }\n\n \/\/ \u4e3b\u8ba1\u7b97\u51fd\u6570\n function calculate() {\n \/\/ 1. \u8bfb\u53d6\u53c2\u6570\n const I = parseFloat(currentInput.value);\n const dT = parseFloat(tempRiseInput.value);\n const H_mil = getCopperThickness();\n const layer = layerSelect.value;\n const unit = unitSelect.value;\n const L_val = parseFloat(lengthInput.value);\n const L_unit = lengthUnitSelect.value;\n\n \/\/ \u9a8c\u8bc1\n if (isNaN(I) || I <= 0) { setStatus(\"\u8bf7\u8f93\u5165\u6709\u6548\u7535\u6d41 (>0)\", false); return; }\n if (isNaN(dT) || dT <= 0) { setStatus(\"\u8bf7\u8f93\u5165\u6709\u6548\u6e29\u5347 (>0)\", false); return; }\n if (isNaN(H_mil) || H_mil <= 0) { setStatus(\"\u8bf7\u8f93\u5165\u6709\u6548\u94dc\u539a (>0)\", false); return; }\n if (isNaN(L_val) || L_val <= 0) { setStatus(\"\u8bf7\u8f93\u5165\u6709\u6548\u957f\u5ea6 (>0)\", false); return; }\n\n \/\/ 2. \u8ba1\u7b97\u7ebf\u5bbd (IPC-2221)\n const k = (layer === \"outer\") ? 0.048 : 0.024;\n const dT_exp = Math.pow(dT, 0.44);\n const denominator = k * dT_exp;\n const ratio = I \/ denominator;\n const W_mil = Math.pow(ratio, 1 \/ 0.725) \/ H_mil;\n\n if (!isFinite(W_mil) || W_mil <= 0) {\n setStatus(\"\u8ba1\u7b97\u5f02\u5e38\uff0c\u8bf7\u68c0\u67e5\u53c2\u6570\", false);\n return;\n }\n\n \/\/ 3. \u5355\u4f4d\u8f6c\u6362\uff1a\u5bbd\u5ea6\n let widthVal, widthUnit;\n if (unit === \"mm\") {\n widthVal = W_mil * 0.0254;\n widthUnit = \"mm\";\n } else {\n widthVal = W_mil;\n widthUnit = \"mil\";\n }\n\n \/\/ 4. \u8ba1\u7b97\u7ebf\u963b\uff1aR = \u03c1 * L \/ (W * H)\n \/\/ \u7edf\u4e00\u4e3a\u7c73\u5236\uff1a\u03c1 = 1.68e-8 \u03a9\u00b7m\n const rho = 1.68e-8; \/\/ \u03a9\u00b7m\n \/\/ \u5c06\u5bbd\u5ea6\u3001\u539a\u5ea6\u3001\u957f\u5ea6\u8f6c\u4e3a\u7c73\n const W_m = W_mil * 0.0000254; \/\/ mil -> m\n const H_m = H_mil * 0.0000254; \/\/ mil -> m\n \/\/ \u957f\u5ea6\u8f6c\u7c73\n let L_m;\n switch (L_unit) {\n case \"mm\": L_m = L_val \/ 1000; break;\n case \"cm\": L_m = L_val \/ 100; break;\n case \"inch\": L_m = L_val * 0.0254; break;\n case \"m\": L_m = L_val; break;\n default: L_m = L_val \/ 1000; break;\n }\n\n const area = W_m * H_m; \/\/ m^2\n if (area <= 0) {\n setStatus(\"\u622a\u9762\u79ef\u4e3a\u96f6\uff0c\u65e0\u6cd5\u8ba1\u7b97\u7535\u963b\", false);\n return;\n }\n const R = rho * L_m \/ area; \/\/ \u03a9\n\n \/\/ \u663e\u793a\u7535\u963b\uff0c\u5355\u4f4d\u81ea\u52a8\u9009\u62e9\uff1a\u5c0f\u4e8e0.001\u03a9\u663e\u793am\u03a9\uff0c\u5426\u5219\u663e\u793a\u03a9\n let resDisplay;\n if (R < 0.001) {\n resDisplay = (R * 1000).toFixed(3) + \" m\u03a9\";\n } else {\n resDisplay = R.toFixed(4) + \" \u03a9\";\n }\n\n \/\/ 5. \u66f4\u65b0\u7ed3\u679c\n widthResult.textContent = widthVal.toFixed(3) + \" \" + widthUnit;\n thickResult.textContent = getCopperDesc();\n kResult.textContent = k.toFixed(4);\n resistanceResult.textContent = resDisplay;\n\n setStatus(\"\u8ba1\u7b97\u5b8c\u6210\", true);\n }\n\n \/\/ \u91cd\u7f6e\n function resetDefaults() {\n currentInput.value = \"2\";\n tempRiseInput.value = \"10\";\n copperSelect.value = \"1\";\n customThickInput.style.display = \"none\";\n customThickInput.value = \"\";\n layerSelect.value = \"outer\";\n unitSelect.value = \"mil\";\n lengthInput.value = \"10\";\n lengthUnitSelect.value = \"mm\";\n widthResult.textContent = \"\u2014\";\n thickResult.textContent = \"\u2014\";\n kResult.textContent = \"\u2014\";\n resistanceResult.textContent = \"\u2014\";\n setStatus(\"\u5df2\u91cd\u7f6e\", false);\n }\n\n \/\/ \u4e8b\u4ef6\u7ed1\u5b9a\n calcBtn.addEventListener(\"click\", calculate);\n resetBtn.addEventListener(\"click\", resetDefaults);\n\n \/\/ \u56de\u8f66\u89e6\u53d1\u8ba1\u7b97\n const inputs = [currentInput, tempRiseInput, customThickInput, lengthInput];\n inputs.forEach(function(inp) {\n inp.addEventListener(\"keydown\", function(e) {\n if (e.key === \"Enter\") {\n e.preventDefault();\n calculate();\n }\n });\n });\n\n \/\/ \u521d\u59cb\u5316\u72b6\u6001\n setStatus(\"\u5c31\u7eea \u00b7 \u8f93\u5165\u53c2\u6570\u540e\u70b9\u51fb\u8ba1\u7b97\", false);\n thickResult.textContent = getCopperDesc();\n kResult.textContent = \"\u2014\";\n resistanceResult.textContent = \"\u2014\";\n })();\n<\/script>\n<\/body>\n<\/html>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>PCB \u5e03\u7ebf\u5bbd\u5ea6 & \u7ebf\u963b\u8ba1\u7b97\u5668 \u26a1 PCB \u5e03\u7ebf\u5bbd\u5ea6 & \u7ebf\u963b IPC-2221 \u7535\u6d41 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1360","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/aimc.skyate.com\/index.php\/wp-json\/wp\/v2\/pages\/1360","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aimc.skyate.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/aimc.skyate.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/aimc.skyate.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aimc.skyate.com\/index.php\/wp-json\/wp\/v2\/comments?post=1360"}],"version-history":[{"count":1,"href":"https:\/\/aimc.skyate.com\/index.php\/wp-json\/wp\/v2\/pages\/1360\/revisions"}],"predecessor-version":[{"id":1361,"href":"https:\/\/aimc.skyate.com\/index.php\/wp-json\/wp\/v2\/pages\/1360\/revisions\/1361"}],"wp:attachment":[{"href":"https:\/\/aimc.skyate.com\/index.php\/wp-json\/wp\/v2\/media?parent=1360"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}