{"id":2395,"date":"2013-01-23T08:00:00","date_gmt":"2013-01-23T00:00:00","guid":{"rendered":"\/\/m.letratesoro.com\/?p=2395"},"modified":"2022-08-14T10:22:01","modified_gmt":"2022-08-14T02:22:01","slug":"pcb-current-carrying-capacity","status":"publish","type":"post","link":"\/\/m.letratesoro.com\/2013\/01\/pcb-current-carrying-capacity\/","title":{"rendered":"PCB\u9285\u7b94\u539a\u5ea6\u3001\u7dda\u5bec\u8207\u6700\u5927\u8ca0\u8f09\u96fb\u6d41\u9593\u7684\u95dc\u4fc2(OZ\u9285\u539a)"},"content":{"rendered":"<p align=\"justify\"><font size=\"4\">(\u4e0b\u9762\u7684\u5167\u5bb9\u662f\u5de5\u4f5c\u718a\u500b\u4eba\u53c3\u8003\u53ca\u6536\u96c6\u7db2\u8def\u4e0a\u7684\u8cc7\u6599\u4e26\u52a0\u5165\u81ea\u5df1\u7684\u610f\u898b\u6574\u7406\u800c\u6210\uff0c\u5167\u5bb9\u53ef\u80fd\u4e0d\u662f\u767e\u5206\u767e\u6b63\u78ba\uff0c\u8acb\u53c3\u8003\u5c31\u597d)<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">PCB\u7684\u96fb\u6d41\u8ca0\u8f09\u80fd\u529b\u539f\u5247\u4e0a\u53d6\u6c7a\u65bc\u4f48\u7dda(trace)\u7684\u9285\u6cca\u65b7\u9762\u7684\u622a\u9762\u7a4d\u8207\u6eab\u5347\uff0c\u4f46\u622a\u9762\u7a4d\u53c8\u8207\u7dda\u8def\u7684\u5bec\u5ea6\u53ca\u539a\u5ea6\u6b63\u76f8\u95dc\uff0c\u53ea\u662f\u96fb\u6d41\u8ca0\u8f09\u80fd\u529b\u662f\u5426\u8ddf\u9285\u7dda\u622a\u9762\u7a4d\u6210\u6b63\u6bd4\u53ef\u80fd\u5c31\u4e0d\u4e00\u5b9a\u4e86\uff1f<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u5047\u8a2d\u5728\u540c\u6a2310\u00b0C\u6eab\u5347\u7684\u689d\u4ef6\u4e0b\uff0c\u4e00\u689d10mil\u7dda\u5bec\u76841oz\u8d70\u7dda(trace)\u53ef\u4ee5\u627f\u53d71Amp\u7684\u96fb\u6d41\uff0c\u6211\u5011\u61c9\u8a72\u53ef\u4ee5\u5f88\u80af\u5b9a50mil\u7dda\u5bec\u7684\u8d70\u7dda\u53ef\u4ee5\u627f\u53d7\u6bd41Amp\u66f4\u5927\u7684\u96fb\u6d41\uff0c\u4f46\u6703\u662f\u500d\u6578\u95dc\u4fc2\u76845Amps\u55ce\uff1f\u7b54\u6848\u4f3c\u4e4e\u662f\u5426\u5b9a\u7684\u3002\u9019\u88e1\u5148\u53c3\u8003MIL-STD-275\u8868\u683c\uff0c\u5176\u53ef\u627f\u53d7\u7684\u6700\u5927\u96fb\u6d41\u5176\u5be6\u53ea\u67092.6Amps\u800c\u5df2\u5594\u3002<\/font><\/p>\n<p align=\"center\"><img loading=\"lazy\" decoding=\"async\" title=\"\u6578\u64da\u4f86\u6e90\uff1aMIL-STD-275 Printed Wiring for Electronic Equipment\uff0c\u7dda\u5bec\u55ae\u4f4d\uff1aInch\" style=\"border-width: 0px; padding-top: 0px; padding-right: 0px; padding-left: 0px; display: inline; background-image: none;\" border=\"0\" alt=\"\u6578\u64da\u4f86\u6e90\uff1aMIL-STD-275 Printed Wiring for Electronic Equipment\uff0c\u7dda\u5bec\u55ae\u4f4d\uff1aInch\" src=\"\/\/m.letratesoro.com\/wp-content\/uploads\/images\/2d66522fe202_9626\/image1.png\" width=\"516\" height=\"464\" \/><font size=\"3\"><em>        <br \/><\/em><\/font><font size=\"4\">(\u6578\u64da\u4f86\u6e90\uff1aMIL-STD-275 Printed Wiring for Electronic Equipment\uff0c\u7dda\u5bec\u55ae\u4f4d\uff1aInch)<\/font><\/p>\n<p><!--more--><\/p>\n<p align=\"justify\"><font size=\"4\">\u4e0d\u904e\u4e0a\u8ff0\u7684\u8868\u683c\u5df2\u7d93\u662f\u597d\u5e7e\u5e74\u4ee5\u524d\u7684\u904e\u6642\u8cc7\u6599\u4e86\uff0c\u73fe\u5728\u6bd4\u8f03\u65b0\u7684\u8cc7\u6599\u61c9\u8a72\u5df2\u7d93\u7531\u3010IPC-2221 Generic Standard on Printed Board Design\u3011\u7684\u5716\u8868\u6240\u53d6\u4ee3\uff0c\u4e0d\u904e\u5728\u77ad\u89e3\u9285\u7b94\u7684\u96fb\u6d41\u8ca0\u8f09\u80fd\u529b\u4ee5\u524d\uff0c\u9019\u88e1\u9084\u6709\u4e00\u500b\u95dc\u9375\u56e0\u5b50\u3010\u9285\u7b94\u7684\u539a\u5ea6(\u76ce\u53f8\uff0coz)\u3011\u9700\u8981\u5148\u4f86\u63a2\u8a0e\u4e00\u4e0b\uff0c\u5230\u5e95\u9285\u7b94\u7684\u539a\u5ea6\u662f\u600e\u9ebc\u8a08\u7b97\u7684\uff1f<\/font><\/p>\n<h4>\n<p><font color=\"#9b00d3\" size=\"5\">\u9285\u7b94\u7684\u539a\u5ea6\uff1a\u76ce\u53f8(ounce, oz)<\/font><\/p>\n<\/h4>\n<blockquote>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u4e00\u822c\u696d\u754c\u6163\u7528\u7684\u9285\u7b94\u539a\u5ea6\u70ba\u300a\u76ce\u53f8(ounce\uff0c\u7b26\u865f\uff1aoz)\u300b\uff0c\u53ef\u662f\u300a\u76ce\u53f8\u300b\u660e\u660e\u5c31\u662f\u91cd\u91cf\u55ae\u4f4d\uff0c\u600e\u9ebc\u53c8\u8b8a\u6210\u539a\u5ea6\u4e86\u5462\uff1f\u9019\u662f\u56e0\u70ba\u5728\u9285\u76ae\u7684\u8853\u8a9e\u4e2d\uff0c\u300a\u76ce\u53f8\u300b\u88ab\u8f49\u63db\u6210\u4e86\u539a\u5ea6\u7684\u55ae\u4f4d\u4e86\uff0c\u600e\u9ebc\u8d8a\u807d\u8d8a\u7cca\u5857\uff1f\u9019\u662f\u56e0\u70ba\u9285\u76ae\u7684\u898f\u683c\u662f\u4ee5\u3010\u6bcf\u5e73\u65b9\u82f1\u544e(ft<sup>2<\/sup>)\u6709\u5e7e\u76ce\u53f8(oz)\u3011\u4f86\u5b9a\u7fa9\u7684\uff0c\u6240\u4ee5\u6211\u5011\u7d93\u5e38\u8aaa\u7684<strong><font style=\"background-color: rgb(255, 255, 0);\">1oz(\u76ce\u53f8)\u5c31\u662f\u5728\u6bcf\u5e73\u65b9\u82f1\u544e(ft<sup>2<\/sup>)\u4e0a\u67091oz\u7684\u91cd\u91cf<\/font><\/strong>\uff0c\u9285\u76ae\u8d8a\u539a\u5c31\u6703\u8d8a\u91cd\uff0c\u65e2\u7136\u9762\u7a4d\u5df2\u7d93\u78ba\u5b9a\uff0c\u6240\u4ee5\u9285\u76ae\u7684\u91cd\u91cf\u5c31\u8ddf\u5176\u539a\u5ea6\u6210\u6b63\u6bd4\u5566\uff0c\u6240\u4ee5\u9285\u76ae\u7684\u76ce\u53f8\u53ef\u4ee5\u7b49\u540c\u65bc\u539a\u5ea6\uff0c\u4e26\u53ef\u4ee5\u88ab\u8f49\u5316\u70ba\u6beb\u7c73(mm)\u6216\u662f\u6beb\u82f1\u540b(mil)\u3002\u9019\u500b\u5176\u5be6\u8ddf\u6211\u5011\u5728\u7b97\u7d19\u5f35\u7684\u6642\u5019\u7528\u78c5\u4f86\u8a08\u7b97\u662f\u4e00\u6a23\u7684\u9053\u7406\uff0c\u6709\u8208\u8da3\u7684\u670b\u53cb\u53ef\u4ee5\u81ea\u5df1\u53bb\u627e\u8c37\u6b4c\u5927\u795e\u67e5\u770b\u5427\uff01<\/font><\/p>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u9019\u88e1\u5217\u51fa\u5e7e\u500b\u5927\u5bb6\u6bd4\u8f03\u5e38\u7528\u5230\u7684\u5c3a\u5bf8\uff0c\u4e26\u63db\u7b97\u6210mil(\u6beb\u540b)\u8207mm(\u6beb\u7c73)\u4f9b\u5927\u5bb6\u53c3\u8003\uff1a<\/font><\/p>\n<ul>\n<li><font size=\"3\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">0.5 \u76ce\u53f8(oz) = 0.0007 \u82f1\u540b(inch) = 0.7 mil = 0.018 \u6beb\u7c73(mm) <\/font><\/li>\n<li><font size=\"3\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">1.0 \u76ce\u53f8(oz) = 0.0014 \u82f1\u540b(inch) = 1.4 mil = 0.035 \u6beb\u7c73(mm) <\/font><\/li>\n<li><font size=\"4\"><font face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\"><font size=\"3\">2.0 \u76ce\u53f8(oz) = 0.0034 \u82f1\u540b(inch) = 2.8 mil = 0.070 \u6beb\u7c73(mm)<\/font> <\/font><\/font><\/li>\n<\/ul>\n<ul><font color=\"#0000ff\" size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\"><strong>\u4e0b\u9762\u4e5f\u8a66\u8457\u70ba\u5404\u4f4d\u8a08\u7b97\u70ba\u4f551oz\u7684\u9285\u7b94\u7d04\u7b49\u65bc1.4mil\uff1a<\/strong><\/font><\/ul>\n<p><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u9285\u7684\u6bd4\u91cd\u70ba8.9(gm\/cm<sup>3<\/sup>)\uff0c<\/font><\/p>\n<p align=\"left\"><font face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\"><font size=\"4\">\u55ae\u4f4d\u63db\u7b97\uff1a         <br \/><\/font>1(ft<sup>2<\/sup>)=93055(mm<sup>2<\/sup>)\uff0c1(mil)=25.4(um)\uff0c1(mm)=39.37(mil)\uff0c1(oz)=28.34(gm) <\/font><\/p>\n<p><font face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">1oz\u9ad4\u7a4d = 28.34(gm) \/ 8.9(gm\/cm<sup>3<\/sup>) = 3.1842(cm<sup>3<\/sup>) = 3184.2(mm<sup>3<\/sup>)<\/font><\/p>\n<p align=\"justify\"><font face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">1oz\u539a\u5ea6 = 3184.2(mm<sup>3<\/sup>) \/ 93055(mm<sup>2<\/sup>) = 0.03422(mm) x 39.37(mil\/mm) = 1.35 (mil)<\/font><\/p>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u8a3b\uff1a\u9285\u7b94\u7684\u5bc6\u5ea6\u6703\u56e0\u70ba\u4f7f\u7528\u4e0d\u540c\u7a2e\u985e\u7684\u9285\u800c\u6709\u4e0d\u540c\u7684\u5bc6\u5ea6\uff0c\u6240\u4ee5\u8a08\u7b97\u4e0a\u53ef\u80fd\u6703\u6709\u4e9b\u5c0f\u8aa4\u5dee\u3002<\/font><\/p>\n<\/blockquote>\n<p><font size=\"3\"><\/font><\/p>\n<h4>\n<p><font color=\"#9b00d3\" size=\"5\">PCB\u9285\u7b94\u622a\u9762\u7a4d\u8207\u6700\u5927\u8ca0\u8f09\u96fb\u6d41\u53ca\u6eab\u5347\u9593\u7684\u95dc\u4fc2<\/font><\/p>\n<\/h4>\n<blockquote>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u4f9d\u7167 IPC-2221 \u7b2c6.2\u7bc0(Conductive Material Requirements)\u7684\u8aaa\u660e\uff0c\u96fb\u8def\u677f\u4e0a\u7684\u6700\u5927\u96fb\u6d41\u8f09\u6d41\u80fd\u529b(Current Carrying Capacity)\u53c8\u53ef\u4ee5\u88ab\u5206\u6210\u5167\u5c64\u7dda\u8def\u8207\u5916\u5c64\u7dda\u8def\u5169\u7a2e\uff0c\u800c\u4e14\u5167\u5c64\u7dda\u8def\u7684\u6700\u5927\u96fb\u6d41\u8f09\u6d41\u80fd\u529b\u88ab\u8a2d\u5b9a\u70ba\u53ea\u6709\u5916\u5c64\u7dda\u8def\u7684\u4e00\u534a\u3002\u9019\u88e1\u7bc0\u9304 IPC-2221 \u7684\u5716\u88686-4\u4ee5\u8aaa\u660e\u5916\u5c64\u7dda\u8def(External conductors)\u8207\u5167\u5c64\u7dda\u8def(Internal Conductors)\u7684\u9285\u7b94\u622a\u9762\u7a4d\u3001\u6eab\u5347\u3001\u8207\u6700\u5927\u96fb\u6d41\u8f09\u6d41\u80fd\u529b\u7684\u95dc\u4fc2\u3002<\/font><\/p>\n<\/blockquote>\n<blockquote>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u53e6\u5916\uff0c\u6709\u4eba\u5f88\u8070\u660e\u7684\u5c07\u4e0a\u8ff0\u5716\u8868PCB\u7dda\u8def\u5c0d\u96fb\u6d41\u7684\u627f\u8f09\u80fd\u529b\u7684\u95dc\u4fc2\u6b78\u7d0d\u51fa\u4e86\u4e00\u500b\u516c\u5f0f\uff0c\u9019\u500b\u516c\u5f0f\u53ef\u4ee5\u5927\u81f4\u4e0a\u7528\u4f86\u53d6\u4ee3\u67e5\u8868\u6240\u5f97\uff1a<\/font><\/p>\n<p><strong><font size=\"4\"><font color=\"#0000ff\"><font face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">I = K\u25b3T<sup>0.44<\/sup>A<sup>0.725<\/sup><\/font><\/font><\/font><\/strong><\/p>\n<ul>\n<li>\n<div align=\"justify\"><font face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\"><font size=\"3\">K\uff1a\u70ba\u4fee\u6b63\u4fc2\u6578\uff0c\u4e00\u822c\u8986\u9285\u7dda\u5728\u5167\u5c64\u6642\u53d60.024\uff0c\u5728\u5916\u5c64\u6642\u53d60.048\u3002<\/font> <\/font><\/div>\n<\/li>\n<li>\n<div align=\"justify\"><font face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\"><font size=\"3\">\u25b3T\uff1a\u70ba\u6700\u5927\u6eab\u5dee\uff0c\u8868\u793a\u9285\u7b94\u901a\u96fb\u5f8c\u767c\u71b1\u9ad8\u51fa\u9031\u906d\u74b0\u5883\u7684\u6eab\u5ea6\uff0c\u55ae\u4f4d\u70ba\u651d\u6c0f\u5ea6(\u00b0C)<\/font>             <br \/><font style=\"background-color: rgb(255, 255, 0);\">\uff08\u6709\u7db2\u53cb\u8cea\u7591\u9019\u500b<font size=\"3\">\u25b3T\u6eab\u5dee<\/font>\u89e3\u91cb\u53ef\u80fd\u6709\u554f\u984c\uff0c\u76ee\u524d\u6b63\u5728\u7814\u7a76\u6f84\u6e05\u4e2d\uff0c\u5982\u679c\u6709\u7d93\u9a57\u7684\u670b\u53cb\u4e5f\u8acb\u4e0d\u541d\u91cb\u6559\u3002\u73fe\u5728\u5df2\u7d93\u6709\u505a\u904e\u4fee\u6539\uff0c\u5982\u679c\u9084\u662f\u6709\u4e0d\u59a5\u7684\u5730\u65b9\u9084\u8acb\u6307\u6b63\u3002\uff09<\/font> <\/font><\/div>\n<\/li>\n<li><font size=\"3\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">A\uff1a\u70ba\u8986\u9285\u7dda\u8def\u7684\u622a\u9762\u7a4d\uff0c\u55ae\u4f4d\u70ba\u5e73\u65b9\u6beb\u82f1\u540b(mil<sup>2<\/sup>) <\/font><\/li>\n<li>\n<div align=\"justify\"><font size=\"3\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">I\uff1a\u70ba\u6700\u5927\u96fb\u6d41\u8f09\u6d41\u80fd\u529b(Current Carrying Capacity)\uff0c\u55ae\u4f4d\u70ba\u5b89\u57f9(Amp) <\/font><\/div>\n<\/li>\n<li><font face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\"><font size=\"3\">1(mil) = 25.4(um)<\/font> <\/font><\/li>\n<\/ul>\n<\/blockquote>\n<p align=\"left\"><img loading=\"lazy\" decoding=\"async\" title=\"IPC-2111\u5716\u88686.4, Figure A External Conductors\u9285\u7b94\u622a\u9762\u7a4d\u3001\u6eab\u5ea6\u3001\u8207\u6700\u5927\u96fb\u6d41\u8f09\u6d41\u80fd\u529b\u7684\u95dc\u4fc2\u3002\" style=\"border-width: 0px; padding-top: 0px; padding-right: 0px; padding-left: 0px; float: left; display: inline; background-image: none;\" border=\"0\" alt=\"IPC-2111\u5716\u88686.4, Figure A External Conductors\u9285\u7b94\u622a\u9762\u7a4d\u3001\u6eab\u5ea6\u3001\u8207\u6700\u5927\u96fb\u6d41\u8f09\u6d41\u80fd\u529b\u7684\u95dc\u4fc2\u3002\" src=\"\/\/m.letratesoro.com\/wp-content\/uploads\/images\/2d66522fe202_9626\/image8.png\" width=\"570\" align=\"left\" height=\"473\" \/>&#160; <br \/><font size=\"4\">\u25b2IPC-2111\u5716\u88686.4, External Conductors\u9285\u7b94\u622a\u9762\u7a4d\u3001\u6eab\u5ea6\u8207\u6700\u5927\u8f09\u6d41\u80fd\u529b\u7684\u95dc\u4fc2\u3002<\/font><\/p>\n<p align=\"left\"><img loading=\"lazy\" decoding=\"async\" title=\"IPC-2111\u5716\u88686.4, Figure C Internal Conductors\u9285\u7b94\u622a\u9762\u7a4d\u3001\u6eab\u5ea6\u3001\u8207\u6700\u5927\u96fb\u6d41\u8f09\u6d41\u80fd\u529b\u7684\u95dc\u4fc2\u3002\" style=\"border-width: 0px; padding-top: 0px; padding-right: 0px; padding-left: 0px; display: inline; background-image: none;\" border=\"0\" alt=\"IPC-2111\u5716\u88686.4, Figure C Internal Conductors\u9285\u7b94\u622a\u9762\u7a4d\u3001\u6eab\u5ea6\u3001\u8207\u6700\u5927\u96fb\u6d41\u8f09\u6d41\u80fd\u529b\u7684\u95dc\u4fc2\u3002\" src=\"\/\/m.letratesoro.com\/wp-content\/uploads\/images\/2d66522fe202_9626\/image15.png\" width=\"560\" height=\"413\" \/>     <br \/><font size=\"4\">\u25b2IPC-2111\u5716\u88686.4, Internal Conductors\u9285\u7b94\u622a\u9762\u7a4d\u3001\u6eab\u5ea6\u8207\u6700\u5927\u8f09\u6d41\u80fd\u529b\u7684\u95dc\u4fc2\u3002<\/font><\/p>\n<p align=\"center\"><font size=\"3\"><\/font><\/p>\n<h4>\n<p><font color=\"#9b00d3\" size=\"5\">\u4f7f\u7528\u7db2\u8def\u67e5\u8a62\u300a\u6700\u5927\u8ca0\u8f09\u96fb\u6d41\u300b<\/font><\/p>\n<\/h4>\n<blockquote>\n<p><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u62dc\u96fb\u8166\u7db2\u8def\u767c\u9054\u4e4b\u8cdc\uff0c\u73fe\u5728\u7db2\u8def\u4e0a\u6709\u8457\u8a31\u591a\u7684\u7db2\u7ad9\u63d0\u4f9b\u4e0a\u8ff0\u7684\u8a08\u7b97\u5f0f\uff0c\u53ea\u8981\u5728\u7db2\u7ad9\u4e0a\u586b\u5165\u9700\u6613\u7684\u96fb\u6d41\u3001\u9285\u7b94\u91cd\u91cf\uff0c\u5c31\u53ef\u4ee5\u6c42\u51fa\u60f3\u8981\u7684\u9285\u7b94\u8d70\u7dda\u7684\u5167\u5c64\u53ca\u5916\u5c64\u7dda\u8def\u5bec\u5ea6\u4e86\u3002\u9019\u88e1\u6709\u5169\u500b\u7db2\u7ad9\u53ef\u4ee5\u8a66\u770b\u770b\uff1a<\/font><\/p>\n<ul>\n<li><a href=\"http:\/\/circuitcalculator.com\/wordpress\/2006\/01\/31\/pcb-trace-width-calculator\/\" target=\"_blank\" rel=\"noopener\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">PCB Trace Width Calculator<\/font><\/a><\/li>\n<li><a href=\"http:\/\/www.desmith.net\/NMdS\/Electronics\/TraceWidth.html\" target=\"_blank\" rel=\"noopener\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">ANSI IPC-2221A PCB Trace Width Calculator<\/font><\/a><\/li>\n<\/ul>\n<\/blockquote>\n<hr \/>\n<p align=\"justify\"><font size=\"4\">\u96d6\u7136\u8aaa\u73fe\u5728\u5df2\u7d93\u6709\u516c\u5f0f\u53ef\u4ee5\u76f4\u63a5\u8a08\u7b97\u9285\u7b94\u7684\u6700\u5927\u96fb\u6d41\u8ca0\u8f09\u80fd\u529b\uff0c\u4f46\u5728\u5be6\u969b\u8a2d\u8a08\u7dda\u8def\u6642\u53ef\u4e0d\u6703\u53ea\u6709\u9019\u9ebc\u55ae\u7d14\u3002\u56e0\u70baTrace\u7684\u96fb\u6d41\u8ca0\u8f09\u80fd\u529b\u4e0d\u53ea\u8207\u9285\u7b94\u622a\u9762\u7a4d\u53ca\u6eab\u5ea6\u6709\u95dc\uff0c\u5176\u4ed6\u5982\u7dda\u8def\u4e0a\u5143\u5668\u4ef6\u7684\u591a\u5be1\u3001\u710a\u76e4\u4ee5\u53ca\u901a\u5b54(vias)\u7b49\u90fd\u6709\u76f4\u63a5\u7684\u95dc\u4fc2\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u5728\u710a\u588a(\u76e4)\u8f03\u591a\u7684\u7dda\u6bb5\uff0c\u5728\u904e\u6ce2\u710a\u7210\u6216\u56de\u710a\u7210\u5f8c\u6709\u5403\u5230\u932b\u7684\u90a3\u6bb5\u7dda\u8def\uff0c\u5176\u96fb\u6d41\u627f\u8f09\u80fd\u529b\u5247\u6703\u5927\u5927\u7684\u589e\u52a0\uff0c\u76f8\u4fe1\u5f88\u591a\u4eba\u61c9\u8a72\u90fd\u6709\u770b\u904e\u4e00\u4e9b\u5927\u96fb\u6d41\u677f\u4e2d\u710a\u588a\u8207\u710a\u588a\u4e4b\u9593\u67d0\u6bb5\u7dda\u8def\u88ab\u71d2\u71ec\u7684\u60c5\u5f62\uff0c\u9053\u7406\u5f88\u7c21\u55ae\uff0c\u9019\u662f\u56e0\u70ba\u710a\u76e4\u4e0a\u591a\u4e86\u710a\u932b\u7684\u539f\u6545\uff0c\u4e5f\u5c31\u662f\u589e\u52a0\u4e86\u7dda\u8def\u4e0a\u53ef\u4ee5\u627f\u53d7\u96fb\u6d41\u7684\u9762\u7a4d\uff0c\u800c\u710a\u588a\u8207\u710a\u588a\u4e4b\u9593\u7684\u7dda\u8def\u4e26\u6c92\u6709\u4efb\u4f55\u7684\u6539\u8b8a\uff0c\u56e0\u6b64\u5728\u96fb\u6e90\u525b\u555f\u52d5\uff0c\u6216\u662f\u96fb\u8def\u4e0a\u57f7\u884c\u6307\u4ee4\u8b8a\u63db\u6642\uff0c\u5c31\u5f88\u6709\u6a5f\u6703\u9020\u6210\u96fb\u6d41\u77ac\u9593\u6ce2\u6d6a(Surge)\u904e\u5927\uff0c\u9019\u6642\u5019\u5c31\u5f88\u5bb9\u6613\u71d2\u65b7\u710a\u588a\u8207\u710a\u588a\u4e4b\u9593\u96fb\u6d41\u627f\u8f09\u80fd\u529b\u8f03\u5f31\u7684\u7dda\u8def\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u89e3\u6c7a\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8003\u616e\u589e\u52a0\u5c0e\u7dda\u7684\u5bec\u5ea6\uff0c\u5982\u679c\u677f\u5b50\u4e0d\u80fd\u5141\u8a31\u589e\u52a0\u5c0e\u7dda\u7684\u5bec\u5ea6\uff0c\u4e5f\u53ef\u4ee5\u8003\u616e\u5728\u5bb9\u6613\u71d2\u6bc0\u7684\u7dda\u8def\u4e0a\u6253\u958b\u9632\u710a\u7da0\u6cb9(solder mask)\uff0c\u4e26\u5229\u7528SMT\u7684\u88fd\u7a0b\u52a0\u5370\u932b\u818f(solder paste)\uff0c\u7d93\u904ereflow\u4ee5\u5f8c\u5c31\u53ef\u4ee5\u589e\u52a0\u5176\u5c0e\u7dda\u7684\u539a\u5ea6\uff0c\u4e5f\u5c31\u589e\u52a0\u4e86\u96fb\u6d41\u627f\u8f09\u7684\u80fd\u529b\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u9019\u6a23\u56c9\u54e9\u53ed\u5506\u7684\u8aaa\u4e86\u4e00\u5927\u5806\uff0c\u6700\u4e3b\u8981\u5f37\u8abfPCB\u7684\u7dda\u8def\u5c0d\u96fb\u6d41\u7684\u627f\u8f09\u80fd\u529b\u96d6\u7136\u5df2\u7d93\u53ef\u4ee5\u7531\u67e5\u8868\u6216\u662f\u516c\u5f0f\u8a08\u7b97\u800c\u5f97\uff0c\u53ef\u662f\u9019\u4e9b\u8cc7\u6599\u8a08\u7b97\u7684\u90fd\u53ea\u662f\u4e00\u4e9b\u76f4\u7dda\u7684\u7dda\u8def\uff0c\u53ef\u662f\u5728PCB\u5be6\u969b\u751f\u7522\u88fd\u9020\u6642\u9084\u5fc5\u9808\u8981\u8003\u616e\u5230\u7dda\u8def\u53ef\u80fd\u6703\u53d7\u5230\u7070\u5875\u6216\u662f\u96dc\u7269\u7684\u6c59\u67d3\uff0c\u81f4\u9020\u6210\u53ef\u80fd\u7684\u5c40\u90e8\u7dda\u8def\u7834\u640d\uff0c\u6240\u4ee5\u4e0d\u8ad6\u6211\u5011\u4f7f\u7528\u4f55\u7a2e\u65b9\u5f0f\u4f86\u6c42\u5f97\u53ef\u627f\u8f09\u7684\u6700\u5927\u96fb\u6d41\u8207\u7dda\u8def\u7dda\u5bec\uff0c\u61c9\u8a72\u90fd\u9084<span class=\"YELLOW_UNDERLINE\">\u8981\u5728\u52a0\u4e0a\u500b<font style=\"background-color: rgb(255, 255, 0);\"><strong>\u5b89\u5168\u4fc2\u6578<\/strong><\/font>\u4f86\u9810\u9632\u53ef\u80fd\u7684\u904e\u8f09\u554f\u984c<\/span>\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u53e6\u5916\uff0c\u6709\u4e9b\u7dda\u8def\u5728\u8f49\u5f4e\u7684\u5730\u65b9\u4e5f\u8981\u7279\u5225\u6ce8\u610f\uff0c\u5982\u679c\u7dda\u8def\u4e0a\u6709\u92b3\u89d2\u51fa\u73fe\u5c31\u6709\u6a5f\u6703\u9020\u6210\u96fb\u6d41\u50b3\u905e\u4e0d\u9806\u66a2\u7684\u554f\u984c\uff0c\u9019\u5c0d\u65bc\u5c0f\u96fb\u6d41\u6216\u5927\u7dda\u5bec\u7684\u7dda\u8def\u53ef\u80fd\u6c92\u6709\u4ec0\u9ebc\u554f\u984c\uff0c\u4f46\u5982\u679c\u7684\u7dda\u8def\u7684\u96fb\u6d41\u8ca0\u8f09\u5bb9\u8a31\u503c\u4e0d\u8db3\u6642\u5c31\u5bb9\u6613\u51fa\u554f\u984c\u3002\u9019\u5c31\u50cf\u5927\u8eca\u904e\u5f4e\u6642\u9700\u8981\u6bd4\u8f03\u5927\u7684\u56de\u8f49\u534a\u5f91\u4e00\u822c\uff0c\u592a\u904e\u76f4\u89d2\u7684\u5f4e\u9053\u53ef\u662f\u6703\u8b93\u8eca\u5b50\u76f4\u63a5\u885d\u51fa\u8dd1\u9053\u7684\u3002<\/font><\/p>\n<hr \/>\n<p><font size=\"4\">\u5ef6\u4f38\u95b1\u8b80\uff1a<\/font>     <br \/><a href=\"\/\/m.letratesoro.com\/2011\/07\/pth-blind-hole-buried-hole\/\"><font size=\"4\">PCB\u540d\u8a5e\u89e3\u91cb\uff1a\u901a\u5b54\u3001\u76f2\u5b54\u3001\u57cb\u5b54<\/font><\/a>     <br \/><a href=\"\/\/m.letratesoro.com\/2010\/10\/fpc-trace-pattern-layout-design-notices-i\/\"><font size=\"4\">\u8edf\u6027\u96fb\u8def\u677f(FPCB)\u7dda\u8def\u8a2d\u8a08\u6ce8\u610f\u4e8b\u9805 I<\/font><\/a>     <br \/><a href=\"\/\/m.letratesoro.com\/2010\/10\/fpc-trace-pattern-layout-design-notices-ii\/\"><font size=\"4\">\u8edf\u6027\u96fb\u8def\u677f(FPCB)\u7dda\u8def\u8a2d\u8a08\u6ce8\u610f\u4e8b\u9805 II<\/font><\/a>     <br \/><a href=\"\/\/m.letratesoro.com\/2020\/05\/copper-history\/\"><font size=\"4\">\u4ec0\u9ebc\u662f\u7d05\u9285\u3001\u7d14\u9285\u3001\u9752\u9285\u3001\u9ec3\u9285\u3001\u767d\u9285\u3001\u751f\u9285\u3001\u719f\u9285\uff1f<\/font><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>(\u4e0b\u9762\u7684\u5167\u5bb9\u662f\u5de5\u4f5c\u718a\u500b\u4eba\u53c3\u8003\u53ca\u6536\u96c6\u7db2\u8def\u4e0a\u7684\u8cc7\u6599\u4e26 &#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28,20],"tags":[],"class_list":["post-2395","post","type-post","status-publish","format-standard","hentry","category-design","category-pcb-fpc-ptf"],"aioseo_notices":[],"views":129711,"_links":{"self":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/2395"}],"collection":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/comments?post=2395"}],"version-history":[{"count":9,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/2395\/revisions"}],"predecessor-version":[{"id":10296,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/2395\/revisions\/10296"}],"wp:attachment":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/media?parent=2395"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/categories?post=2395"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/tags?post=2395"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}