{"id":902,"date":"2011-01-02T21:19:36","date_gmt":"2011-01-02T13:19:36","guid":{"rendered":"\/\/m.letratesoro.com\/2011\/01\/test-point-on-pcb\/"},"modified":"2024-02-16T09:35:23","modified_gmt":"2024-02-16T01:35:23","slug":"test-point-on-pcb","status":"publish","type":"post","link":"\/\/m.letratesoro.com\/2011\/01\/test-point-on-pcb\/","title":{"rendered":"PCB\u4e0a\u5e38\u898b\u5c0f\u5713\u9ede\u662f\u505a\u4ec0\u9ebc\u7528\u7684\uff1fPCB\u4e0a\u70ba\u4f55\u8981\u6709\u6e2c\u8a66\u9ede\uff1f"},"content":{"rendered":"

\"PCB\u96fb\u8def\u677f\u4e0a\u9762\u70ba\u4f55\u8981\u6709\u6e2c\u8a66\u9ede\uff1f\"<\/font><\/p>\n

\u4e0d\u77e5\u9053\u4f60\u662f\u5426\u597d\u5947\u904e\u5728PCB\u4e0a\u9762\u70ba\u4f55\u7d93\u5e38\u6703\u770b\u5230\u6709\u4e9b\u88f8\u9732\u7684\u5713\u578b\u5c0f\u9ede\uff1f\u5b83\u5011\u65e2\u6c92\u6709\u710a\u63a5\u96f6\u4ef6\uff0c\u5927\u591a\u6642\u5019\u751a\u81f3\u6c92\u6709\u5370\u5237\u932b\u818f\uff1f\u9019\u4e9b\u5c0f\u5713\u9ede\u5176\u5be6\u662f\u7d66\u7d44\u88dd\u5de5\u5ee0\u6e2c\u8a66PCBA\u529f\u80fd\u662f\u5426\u5408\u683c\u7528\u7684\u6e2c\u8a66\u9ede\u3002<\/font><\/p>\n

\u5c0d\u65bc\u8a31\u591a\u5b78\u904e\u96fb\u5b50\u5b78\u7684\u670b\u53cb\u4f86\u8aaa\uff0c\u5728\u96fb\u8def\u677f\u4e0a\u8a2d\u7f6e<\/font>\u6e2c\u8a66\u9ede(test point)<\/font><\/strong>\u662f\u518d\u81ea\u7136\u4e0d\u904e\u7684\u4e8b\u60c5\u4e86\uff0c\u53ef\u662f\u5c0d\u5b78\u6a5f\u68b0\u6216\u6a5f\u69cb\u6216\u5176\u4ed6\u80cc\u666f\u7684\u670b\u53cb\u4f86\u8aaa\uff0c\u6e2c\u8a66\u9ede\u662f\u4ec0\u9ebc\uff1f\u53ef\u80fd\u9084\u771f\u6709\u9ede\u7d66\u5b83\u4e00\u982d\u9727\u6c34\u3002<\/font><\/p>\n

\u5de5\u4f5c\u718a\u672c\u8eab\u5c31\u662f\u5b78\u6a5f\u68b0\u51fa\u8eab\u7684\uff0c\u8a18\u5f97\u81ea\u5df1\u7b2c\u4e00\u6b21\u9032\u5230\u96fb\u5b50\u7d44\u88dd\u5ee0\u5de5\u4f5c\u7576\u88fd\u7a0b\u5de5\u7a0b\u5e2b<\/a>\u7684\u6642\u5019\uff0c\u9084\u66fe\u7d93\u70ba\u4e86\u9019\u500b\u6e2c\u8a66\u9ede\u554f\u904e\u597d\u591a\u4eba\u5f8c\u624d\u77ad\u89e3\u5b83\u5230\u5e95\u5728\u505a\u4ec0\u9ebc\u7528\u3002<\/font><\/p>\n

\u8a2d\u7f6e\u6e2c\u8a66\u9ede\u7684\u57fa\u672c<\/font>\u76ee\u7684\u662f\u70ba\u4e86\u6e2c\u8a66\u96fb\u8def\u677f\u4e0a\u7684\u96f6\u7d44\u4ef6\u6709\u5426\u7b26\u5408\u898f\u683c\u4ee5\u53ca\u96f6\u4ef6\u710a\u63a5\u662f\u5426\u826f\u597d<\/font>\uff0c\u6bd4\u5982\u8aaa\u60f3\u6aa2\u67e5\u96fb\u8def\u677f\u4e0a\u7684\u4e00\u9846\u96fb\u963b\u6709\u6c92\u6709\u554f\u984c\uff0c\u6700\u7c21\u55ae\u7684\u65b9\u6cd5\u5c31\u662f\u62ff\u842c\u7528\u96fb\u9336\u91cf\u6e2c\u5176\u5169\u982d\u7684\u710a\u9ede\u5c31\u53ef\u4ee5\u77e5\u9053\uff0c\u5176\u4ed6\u7684\u96fb\u5bb9\u3001\u96fb\u611f\u7b49\u96f6\u4ef6\u4e5f\u662f\u985e\u4f3c\u7684\u9053\u7406\u3002<\/font><\/p>\n

\u53ef\u662f\u5728\u5927\u91cf\u751f\u7522\u7684\u5de5\u5ee0\u88e1\u6c92\u6709\u8fa6\u6cd5\u8b93\u4f60\u7528\u96fb\u9336\u6162\u6162\u53bb\u91cf\u6e2c\u6bcf\u4e00\u7247\u677f\u5b50\u4e0a\u7684\u6bcf\u4e00\u9846\u96fb\u963b\u3001\u96fb\u5bb9\u3001\u96fb\u611f\u3001\u751a\u81f3\u662fIC\u7684\u96fb\u8def\u662f\u5426\u6b63\u78ba\uff0c\u6240\u4ee5\u5c31\u6709\u4e86\u6240\u8b02\u7684ICT(In-Circuit-Test)<\/a>\u6216MDA(Manufacturing-Defect-Analyzer)\u9019\u985e\u81ea\u52d5\u5316\u6e2c\u8a66\u6a5f\u53f0\u7684\u51fa\u73fe\uff0c\u5b83\u4f7f\u7528\u591a\u652f\u63a2\u91dd<\/font><\/strong>(\u4e00\u822c\u7a31\u4e4b\u70ba\u300c\u91dd\u5e8a(Bed-Of-Nails)\u300d\u6cbb\u5177)\u540c\u6642\u63a5\u89f8\u677f\u5b50\u4e0a\u6240\u6709\u9700\u8981\u88ab\u91cf\u6e2c\u7684\u96f6\u4ef6\u7dda\u8def\uff0c\u7136\u5f8c\u7d93\u7531\u7a0b\u5f0f\u63a7\u5236\uff08\u4ee5\u5e8f\u5217\u70ba\u4e3b\uff0c\u4e26\u5217\u70ba\u8f14\uff09\u7684\u65b9\u5f0f\u5faa\u5e8f\u91cf\u6e2c\u9019\u4e9b\u96f6\u4ef6\u7684\u96fb\u5b50\u7279\u6027\uff0c\u901a\u5e38\u9019\u6a23\u7684\u6e2c\u8a66\u8981\u6e2c\u5b8c\u4e00\u7247\u677f\u5b50\u4e0a\u7684\u6240\u6709\u96f6\u4ef6\u53ea\u9700\u898130~120\u79d2\u5de6\u53f3\u7684\u6642\u9593\u53ef\u4ee5\u5b8c\u6210\uff0c\u8996\u96fb\u8def\u677f\u4e0a\u7684\u96f6\u4ef6\u591a\u5be1\u800c\u5b9a\uff0c\u96f6\u4ef6\u8d8a\u591a\u6642\u9593\u8d8a\u9577\uff0c\u7576\u7136\u96f6\u4ef6\u8d8a\u5c11\u6e2c\u8a66\u5c31\u8d8a\u77ed\u3002<\/font><\/p>\n

<\/p>\n

\"PCB\u96fb\u8def\u677f\u4e0a\u9762\u70ba\u4f55\u8981\u6709\u6e2c\u8a66\u9ede\uff1f\"<\/font>\u4f46\u662f\u5982\u679c\u8b93\u9019\u4e9b\u63a2\u91dd\u76f4\u63a5\u63a5\u89f8\u5230\u677f\u5b50\u4e0a\u9762\u7684\u96fb\u5b50\u96f6\u4ef6\u6216\u662f\u5176\u710a\u9ede\uff0c\u5f88\u6709\u53ef\u80fd\u6703\u4e0d\u5c0f\u5fc3\u58d3\u6bc0\u4e00\u4e9b\u96fb\u5b50\u96f6\u4ef6\uff0c\u53cd\u800c\u9069\u5f97\u5176\u53cd\uff0c\u6240\u4ee5\u8070\u660e\u7684\u5de5\u7a0b\u5e2b\u5c31\u767c\u660e\u4e86\u300c\u6e2c\u8a66\u9ede\u300d\uff0c\u5728\u96f6\u4ef6\u7684\u5169\u7aef\u984d\u5916\u5f15\u51fa\u4e00\u5c0d\u5713\u5f62\u7684\u5c0f\u9ede\uff0c\u4e0a\u9762\u6c92\u6709\u9632\u710a(solder mask)\uff0c\u53ef\u4ee5\u8b93\u6e2c\u8a66\u7528\u7684\u63a2\u91dd\u76f4\u63a5\u63a5\u89f8\u5230\u9019\u4e9b\u5c0f\u9ede\uff0c\u800c\u4e0d\u7528\u76f4\u63a5\u63a5\u89f8\u5230\u90a3\u4e9b\u9700\u8981\u88ab\u91cf\u6e2c\u7684\u96fb\u5b50\u96f6\u4ef6\u3002<\/font><\/p>\n

\"PCB\u96fb\u8def\u677f\u4e0a\u7684\u6e2c\u8a66\u9ede\"<\/p>\n

\u65e9\u671f\u5728\u96fb\u8def\u677f\u4e0a\u9762\u9084\u90fd\u662f\u50b3\u7d71\u63d2\u4ef6(THDs)<\/a>\u7684\u5e74\u4ee3\uff0c\u7684\u78ba\u6703\u62ff\u96f6\u4ef6\u7684\u710a\u8173\u4f86\u7576\u4f5c\u6e2c\u8a66\u9ede\u4f86\u7528\uff0c\u56e0\u70ba\u50b3\u7d71\u96f6\u4ef6\u7684\u710a\u8173\u5920\u5f37\u58ef\uff0c\u4e0d\u6015\u91dd\u7d2e\uff0c\u53ef\u662f\u7d93\u5e38\u6703\u6709\u63a2\u91dd\u63a5\u89f8\u4e0d\u826f\u7684\u8aa4\u5224\u60c5\u5f62\u767c\u751f\uff0c\u56e0\u70ba\u4e00\u822c\u7684\u96fb\u5b50\u96f6\u4ef6\u5728\u7d93\u904e\u6ce2\u710a(wave soldering)<\/a>\u6216\u662fSMT\u8cbc\u710a<\/a>\u5403\u932b\u5f8c\uff0c\u5728\u5176\u710a\u932b\u7684\u8868\u9762\u901a\u5e38\u6703\u5f62\u6210\u4e00\u5c64\u932b\u818f\u52a9\u710a\u5291<\/a>\u7684\u6b98\u7559\u8584\u819c\uff0c\u9019\u5c64\u8584\u819c\u7684\u963b\u6297\u975e\u5e38\u9ad8\uff0c\u7d93\u5e38\u6703\u9020\u6210\u63a2\u91dd\u7684\u63a5\u89f8\u4e0d\u826f\uff0c\u6240\u4ee5\u7576\u6642\u7d93\u5e38\u53ef\u898b\u7522\u7dda\u7684\u6e2c\u8a66\u4f5c\u696d\u54e1\uff0c\u62ff\u8457\u7a7a\u6c23\u5674\u69cd\u62fc\u547d\u7684\u5439\u677f\u5b50\uff0c\u6216\u662f\u62ff\u9152\u7cbe\u64e6\u62ed\u9019\u4e9b\u9700\u8981\u63a2\u91dd\u63a5\u89f8\u7684\u5730\u65b9\u3002<\/font><\/p>\n

\u65e2\u4f7f\u9019\u4e9bPCB\u4e0a\u7684\u6e2c\u8a66\u9ede\u53ea\u7d93\u904e\u6ce2\u5cf0\u710a\u4e5f\u6703\u6709\u63a2\u91dd\u63a5\u89f8\u4e0d\u826f\u7684\u554f\u984c\uff0c\u56e0\u70ba\u6e2c\u8a66\u9ede\u4e5f\u6703\u6cbe\u4e0a\u710a\u932b\u7684\u52a9\u710a\u5291\u3002\u5f8c\u4f86SMT\u88fd\u7a0b\u76db\u884c\u5f8c\uff0c\u9019\u985e\u56e0\u70ba\u52a9\u710a\u5291\u6b98\u7559\u800c\u6e2c\u8a66\u8aa4\u5224\u7684\u60c5\u5f62\u624d\u5f97\u5230\u5927\u5e45\u6539\u5584\uff0c\u6e2c\u8a66\u9ede\u7684\u61c9\u7528\u4e5f\u88ab\u5927\u5927\u5730\u8ce6\u4e88\u91cd\u4efb\uff0c\u56e0\u70baSMT\u7684\u96f6\u4ef6\u672c\u9ad4\u901a\u5e38\u5f88\u8106\u5f31\uff0c\u7121\u6cd5\u627f\u53d7\u6e2c\u8a66\u63a2\u91dd\u7684\u76f4\u63a5\u63a5\u89f8\u58d3\u529b\uff0c\u4f7f\u7528\u6e2c\u8a66\u9ede\u5c31\u53ef\u4ee5\u4e0d\u7528\u8b93\u63a2\u91dd\u76f4\u63a5\u63a5\u89f8\u5230\u96f6\u4ef6\u672c\u9ad4\u53ca\u5176\u710a\u8173\uff0c\u4e0d\u4f46\u4fdd\u8b77\u96f6\u4ef6\u4e0d\u53d7\u50b7\u5bb3\uff0c\u4e5f\u5927\u5927\u5730\u9593\u63a5\u63d0\u6607\u6e2c\u8a66\u7684\u53ef\u9760\u5ea6\uff0c\u56e0\u70ba\u8aa4\u5224\u7684\u60c5\u5f62\u4e5f\u8b8a\u5c11\u4e86\u3002<\/font><\/p>\n

\u4e0d\u904e\u96a8\u8457\u79d1\u6280\u7684\u6f14\u9032\uff0c\u96fb\u8def\u677f\u7684\u5c3a\u5bf8\u8d8a\u4f86\u8d8a\u5c0f\uff0c\u60f3\u8981\u5728\u5c0f\u5c0f\u7684\u96fb\u8def\u677f\u4e0a\u9762\u5149\u8981\u64e0\u4e0b\u9019\u9ebc\u591a\u7684\u96fb\u5b50\u96f6\u4ef6\u5c31\u5df2\u7d93\u6709\u4e9b\u6349\u895f\u898b\u8098\uff0c\u9019\u4f7f\u5f97\u6e2c\u8a66\u9ede\u4f54\u7528\u96fb\u8def\u677f\u984d\u5916\u7a7a\u9593\u7684\u554f\u984c\uff0c\u7d93\u5e38\u5728\u8a2d\u8a08\u8207\u88fd\u9020\u7aef\u4e4b\u9593\u62d4\u6cb3\uff0c\u4e0d\u904e\u9019\u500b\u8b70\u984c\u7b49\u4ee5\u5f8c\u6709\u6a5f\u6703\u6211\u5011\u53ef\u4ee5\u518d\u6df1\u5165\u8a0e\u8ad6\u3002<\/font><\/p>\n

\u6e2c\u8a66\u9ede\u7684\u5916\u89c0\u901a\u5e38\u662f\u5713\u5f62\uff0c\u56e0\u70ba\u63a2\u91dd\u4e5f\u662f\u5713\u67f1\u5f62\uff0c\u6bd4\u8f03\u597d\u751f\u7522\uff0c\u4e5f\u6bd4\u8f03\u5bb9\u6613\u8b93\u76f8\u9130\u63a2\u91dd\u9760\u5f97\u8fd1\u4e00\u4e9b\uff0c\u9019\u6a23\u624d\u53ef\u4ee5\u589e\u52a0\u91dd\u5e8a\u7684\u690d\u91dd\u5bc6\u5ea6\u3002<\/font> <\/font><\/p>\n

\"PCB\u96fb\u8def\u677f\u4e0a\u7684\u6e2c\u8a66\u9ede\"<\/font><\/p>\n

\u4f7f\u7528\u91dd\u5e8a\u4f86\u505aPCBA\u96fb\u8def\u6e2c\u8a66\u6703\u6709\u4e00\u4e9b\u6a5f\u69cb\u4e0a\u7684\u5148\u5929\u4e0a\u9650\u5236\uff0c\u6bd4\u5982\u8aaa\uff1a<\/strong><\/font><\/p>\n