{"id":2986,"date":"2020-03-20T08:23:00","date_gmt":"2020-03-20T08:23:00","guid":{"rendered":""},"modified":"2020-03-20T16:23:25","modified_gmt":"2020-03-20T08:23:25","slug":"%e5%a6%82%e4%bd%95%e7%90%86%e8%a7%a3pcb%e6%9d%bf%e7%ba%bf%e5%be%84%e7%9a%84%e8%bd%bd%e6%b5%81%e8%83%bd%e5%8a%9b","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=2986","title":{"rendered":"\u5982\u4f55\u7406\u89e3PCB\u677f\u7ebf\u5f84\u7684\u8f7d\u6d41\u80fd\u529b"},"content":{"rendered":"

\n\t\u6211\u4eca\u5929\u770b\u4e86\u4e24\u7bc7\u6587\u7ae0\uff0c\u89c9\u5f97\u5f88\u6709\u542f\u53d1\uff0c\u5bf9\u7167\u627e\u4e86\u4e00\u4e9b\u8fd9\u65b9\u9762\u7684\u8d44\u6599\uff0c\u5927\u90e8\u5206\u90fd\u662f\u76f4\u63a5\u7ed9\u51fa\u6570\u636e\uff0c\u5982\u4e0b\u56fe\u6240\u793a<\/p>\n

\n\t<\/p>\n

\n\t <\/div>\n

\n\t\u7ebf\u5bbd<\/u>\u7684\u5355\u4f4d\u662f\uff1aInch \u6570\u636e\u6765\u6e90\uff1aMI<\/u>L-STD-275 Printe<\/u>d Wiring for Electronic Equipment<\/p>\n

\n\t\u4ed4\u7ec6\u9605\u8bfbTemperature Rise in PCB<\/u> Trace\u8fd9\u7bc7\u6587\u7ae0\uff0c\u6536\u83b7\u5f88\u5927\uff0c\u6311\u51fa\u91cd\u8981\u7684\u4e00\u90e8\u5206\u6765\u66f4\u597d\u7684\u7406\u89e3PCB\u677f<\/u>\u7ebf\u5f84\u7684\u8f7d\u6d41\u80fd\u529b\u3002<\/p>\n

\n\t\u6211 \u4eec\u77e5\u9053PCB\u677f\u4e0a\u7684\u5bfc\u7ebf\u7535\u6d41<\/u>\u8d1f\u8f7d\u80fd\u529b\u662f\u6709\u9650\u7684\uff0c\u6211\u4eec\u4e00\u822c\u5728\u5728\u4e00\u5b9a\u73af\u5883\u6761\u4ef6\u4e0b\uff0c\u5b9a\u4e49\u4e00\u5b9a\u5bbd\u5ea6\u548c\u539a\u5ea6\u7684\u5bfc\u7ebf\u5728\u89c4\u5b9a\u7684\u5bfc\u7ebf\u6e29\u5347\u5185\uff0c\u6240\u80fd\u627f\u53d7\u7684\u6700\u5927\u8d1f\u8f7d\u7535\u6d41\u3002 \u5728\u8fd9\u91cc\u8fd8\u9700\u8981\u7ec6\u5206\u6210\u6301\u7eed\u7535\u6d41\u548c\u77ac\u95f4\u51b2\u51fb\u7535\u6d41\u4e24\u79cd\u7535\u6d41\u65b9\u5f0f\uff08\u6301\u7eed\u7535\u6d41\u662f\u6307\u5728\u7535\u8def<\/u>\u5de5\u4f5c\u65f6\u5bfc\u7ebf\u4e0a\u8fde\u7eed\u6d41\u8fc7\u7684\u7535\u6d41\u3002\u51b2\u51fb\u7535\u6d41\u662f\u6307\u5728\u7535\u8def\u5de5\u4f5c\u65f6\uff0c\u5728\u5bfc\u7ebf\u4e0a\u77ac\u95f4\u6d41\u8fc7\u7684 \u8d85\u8fc7\u6b63\u5e38\u6301\u7eed\u7535\u6d41\u7684\u8fc7\u8f7d\u7535\u6d41\u3002\uff09\uff0c\u4e24\u79cd\u60c5\u51b5\u5bf9\u5bfc\u7ebf\u7684\u6e29\u5347\u5f71\u54cd\u662f\u4e0d\u540c\u7684\uff0c\u6211\u4eec\u5728\u8bbe\u8ba1\u65f6<\/u>\u9700\u8981\u5206\u522b\u8003\u8651\u8fd9\u4e24\u79cd\u65b9\u5f0f\u7684\u5b9e\u9645\u6548\u5e94\u3002<\/p>\n

\n\t\u6211\u4eec\u76f4\u89c2\u7684\u8ba4\u8bc6\u8ba4\u4e3a\u53d1\u70ed\u4e00\u822c\u4eceR*I^2\uff0cR\u662f\u548c\u5bfc\u7ebf\u7684\u622a\u9762\u79ef\uff08\u5bbd\u5ea6\u548c\u539a\u5ea6\u7684\u4e58\u79ef\uff09\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u53d1\u73b0\u8fd9\u662f\u4e00\u4e2a\u975e\u7ebf\u6027\u51fd\u6570\uff0c\u5e76\u4e14\u7531\u4e8e\u5bfc\u7ebf\u5728\u53d1\u70ed\u7684\u540c\u65f6\u6709\u591a\u79cd\u6563\u70ed\u65b9\u5f0f\uff0c\u4f7f\u5f97\u8fd9\u4e2a\u6a21\u578b\u53d8\u5f97\u6bd4\u8f83\u590d\u6742\uff0c\u56e0\u6b64\u6211\u4eec\u521d\u6b65\u7ed9\u5b9a\u4e00\u4e2a\u6a21\u578b\u7136\u540e\u4f7f\u7528\u6570\u636e\u8fdb\u884c\u62df\u5408<\/p>\n

\n\t<\/p>\n

\n\t\u91c7\u7528DN\u6570\u636e\u62df\u5408\uff1a<\/p>\n

\n\t<\/p>\n

\n\t\u5f15\u5165Dummy\u53d8\u91cf\u53ef\u589e\u52a0\u51c6\u786e\u6027\uff1a<\/p>\n

\n\t<\/p>\n

\n\t\u91c7\u7528IPC\u7684\u6570\u636e\u62df\u5408\u7ed3\u679c\uff1a<\/p>\n

\n\t<\/p>\n

\n\t\u8003\u8651\u7684\u610f\u4e49\u548c\u5176\u4ed6\u7684\u5f71\u54cd\uff1a<\/p>\n

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\n\t\u503c\u5f97\u6211\u4eec\u6ce8\u610f\u7684\u662fPCB\u4e0a\u7684\u963b\u710a\u819c\u548c\u6577\u5f62\u6d82\u5c42\u4f1a\u5f71\u54cd\u5bfc\u7ebf\u7684\u6563\u70ed\uff0c\u540c\u6837\u6e29\u5347\u5bfc\u7ebf\u7684\u8d1f\u8f7d\u7535\u6d41\u80fd\u529b\u4f1a\u6709\u6240\u4e0b\u964d\uff0c\u56e0\u6b64\u6211\u4eec\u9700\u8981\u5bf9\u8ba1\u7b97\u5b8c\u6210\u540e\u7684\u5bfc\u7ebf\u5bbd\u5ea6\u7ed9\u4ee5\u8865\u507f\uff08\u6563\u70ed\u6761\u4ef6\u4e0d\u597d\u65f6\u5bfc\u7ebf\u7684\u5bbd\u5ea6\u5e94\u7565\u5927\u4e8e\u6563\u70ed\u597d\u7684\u5bfc\u7ebf\u5bbd\u5ea6\uff09<\/p>\n

\n\t\u53e6\u5916\u4e00\u4e2a\u56e0\u7d20\u662f\u5bfc\u7ebf\u7684\u95f4\u8ddd\u5bf9\u3002\u95f4\u8ddd\u5c0f\u3001\u677f\u7684\u70ed\u8bbe\u8ba1\u4e0d\u826f\u548c\u6a21\u5757\u6563\u70ed\u6761\u4ef6\u5dee\uff0c\u4f1a\u4f7f\u5bfc\u7ebf\u7684\u6e29\u5347\u63d0\u9ad8\uff0c\u4ece\u800c\u5f71\u54cd\u5bfc\u7ebf\u7684\u6709\u6548\u7535\u6d41\u8d1f\u8f7d\u80fd\u529b\u3002<\/p>\n

\n\t\u5728 PCB\u52a0\u5de5\u4e2d\u7531\u4e8e\u5bf9\u5b54\u8fdb\u884c\u91d1\u5c5e\u5316\u548c\u56fe\u5f62\u7535\u9540\u65f6\uff0c\u4f1a\u4f7f\u5bfc\u7ebf\u94dc\u5c42\u7684\u539a\u5ea6\u589e\u52a0\u3002\u63d0\u9ad8\u4e86\u8d1f\u8f7d\u7535\u6d41\u7684\u80fd\u529b\u4f46\u662f\u8680\u523b\u65f6\u5bfc\u7ebf\u7684\u4fa7\u8680\u3002\u4f7f\u5bbd\u5ea6\u51cf\u5c11\u53c8\u5f71\u54cd\u8d1f\u8f7d\u7535\u6d41\u3002\u6240\u4ee5\u5728\u52a0 \u5de5\u8fc7\u7a0b\u4e2d\u4e25\u683c\u63a7\u5236\u8680\u523b\u8d28\u91cf\u3002\u5728\u5de5\u827a\u6b63\u5e38\u7684\u6761\u4ef6\u4e0b\u4e0d\u4f1a\u964d\u4f4e\u5bfc\u7ebf\u7684\u8d1f\u8f7d\u7535\u6d41\u80fd\u529b\u3002\u751a\u81f3\u4f1a\u7a0d\u6709\u63d0\u9ad8\uff0c\u8fd9\u662f\u56e0\u4e3a\u56fe\u5f62\u7535\u9540\u6cd5\u5236\u9020<\/u>PCB\uff0c\u9540\u5c42\u52a0\u539a\u7684\u7a0b\u5ea6\u8981\u5927\u4e8e\u5bfc\u7ebf\u4fa7 \u8680\u7684\u91cf\u3002 \u4f7f\u5bfc\u7ebf\u7684\u5b9e\u9645\u622a\u9762\u79ef\u589e\u5927\u800c\u9020\u6210\u7684.<\/p>\n","protected":false},"excerpt":{"rendered":"

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