{"id":11142,"date":"2021-11-10T09:36:00","date_gmt":"2021-11-10T01:36:00","guid":{"rendered":"\/\/m.letratesoro.com\/?p=11142"},"modified":"2024-05-12T10:52:22","modified_gmt":"2024-05-12T02:52:22","slug":"cn-pcb-wicking","status":"publish","type":"post","link":"\/\/m.letratesoro.com\/2021\/11\/cn-pcb-wicking\/","title":{"rendered":"[\u7b80\u4e2d]\u4f55\u8c13PCB\u300c\u706f\u82af\u6548\u5e94(wicking)\u300d\uff1f\u706f\u82af\u73b0\u8c61\u4f1a\u5bfc\u81f4\u4ec0\u4e48\u54c1\u8d28\u95ee\u9898\uff1f"},"content":{"rendered":"

\"[\u7b80\u4e2d]\u4f55\u8c13PCB\u300c\u706f\u82af\u6548\u5e94(wicking)\u300d\uff1f\u706f\u82af\u73b0\u8c61\u4f1a\u5bfc\u81f4\u4ec0\u4e48\u54c1\u8d28\u95ee\u9898\uff1f\"<\/font><\/p>\n

\u300c\u706f\u82af\u300d\u6307\u7684\u662f\u8721\u70db\u6216\u53e4\u8001\u6cb9\u706f\u70b9\u71c3\u65f6\u6301\u7eed\u4f9b\u6cb9\u71c3\u70e7\u7684\u854a\u82af\u90e8\u5206\uff0c\u901a\u5e38\u4ee5\u5bb9\u6613\u5438\u6cb9\u7684\u7ec6\u4e1d\u72b6\u7ea4\u7ef4\u6216\u68c9\u4e1d\u637b\u6210\u675f\u7ebf\u6765\u5145\u5f53\u3002\u56e0\u4e3a\u4e0d\u662f\u878d\u5408\uff0c\u6240\u4ee5\u5728\u7ea4\u7ef4\u4e0e\u7ea4\u7ef4\u4e4b\u95f4\u5b58\u5728\u4e00\u4e9b\u6781\u5c0f\u7684\u7f1d\u9699\uff0c\u5c06\u82af\u7ebf\u4e00\u7aef\u6d78\u6ce1\u4e8e\u71c3\u6cb9\u6db2\u4f53\u5185\uff0c\u6db2\u4f53\u5c31\u4f1a\u56e0\u4e3a\u300c<\/font>\u6bdb\u7ec6\u7ba1\u4f5c\u7528(capillary action)<\/font><\/a>\u300d\u6cbf\u7740\u8fd9\u4e9b\u7ea4\u7ef4\u95f4\u7684\u7f1d\u9699\u79fb\u52a8\u524d\u8fdb\uff0c\u6b64\u4f5c\u7528\u5c31\u79f0\u4e4b\u4e3a\u300c\u706f\u82af\u6548\u5e94(wicking effect)\u300d\u3002<\/font><\/p>\n

\u8721\u70db\u7684\u706b\u706f\u6cb9\u71c3\u70e7\u65f6\u6240\u70e7\u6389\u7684\u5927\u90e8\u5206\u90fd\u662f\u7ecf\u7531\u706f\u82af\u8f93\u9001\u4e0a\u6765\u7684\u6db2\u6001\u6cb9\uff0c\u800c\u4e0d\u662f\u706f\u82af\uff0c\u8fd9\u4e5f\u662f\u706f\u82af\u4e3a\u4f55\u53ef\u4ee5\u6301\u4e45\u71c3\u70e7\u7684\u539f\u56e0\u3002<\/font><\/p>\n

\u9802\u7aef\u5716\u7247\u7531<\/font>Upali Senarath Bandara<\/font><\/a>\u5728<\/font>Pixabay<\/font><\/a>\u4e0a\u767c\u5e03<\/font><\/p>\n

<\/p>\n

\u7535\u8def\u677f(PCB)\u4e0a\u7684\u300c\u706f\u82af(wicking)\u300d\u6307\u7684\u662f\u4ec0\u4e48\uff1f\u706f\u82af\u73b0\u8c61\u53c8\u4f1a\u5bfc\u81f4\u4ec0\u4e48\u54c1\u8d28\u95ee\u9898\uff1f<\/font><\/font><\/h2>\n

\u7535\u5b50\u5236\u9020\u4e1a\u4e2d\u7684\u300c\u706f\u82af\u6548\u5e94(wicking effect)\u300d\u4e00\u822c\u6307\u7684\u662fPCB\u57fa\u677f\u5728\u673a\u68b0\u94bb\u5b54(\u7b80\u79f0\u300c\u673a\u94bb\u300d)\u5236\u4f5c<\/font>PTH<\/font><\/a>\u53ca<\/font>via<\/font><\/a>\u5b54\u65f6\uff0c\u5bb9\u6613\u56e0\u4e3a\u632f\u52a8\u6469\u64e6\u4ea7\u751f\u9ad8\u70ed\u878d\u5316\u6811\u8102\u3002\u53e6\u5916\uff0c\u94bb\u5934\u9ad8\u901f\u65cb\u8f6c\u7684\u6495\u626f\u529b\u9053\u4e5f\u4f1a\u9020\u6210\u73bb\u7483\u7ea4\u7ef4\u7eb1\u675f\u4e2d\u7ea4\u7ef4\u4e0e\u7ea4\u7ef4\u95f4\u70b8\u5f00\u3002\u5728PCB\u5236\u4f5c\u7684\u540e\u7eed\u7535\u9540\u94dc\u4f5c\u4e1a\u65f6\uff0c\u6db2\u6001\u94dc\u5c31\u4f1a\u6cbf\u7740\u8fd9\u4e9b\u57fa\u677f\u7ea4\u7ef4\u95f4\u88c2\u5f00\u7684\u7f1d\u9699\u800c\u53d1\u751f\u6d78\u900f\u7684\u73b0\u8c61\uff0c\u56e0\u4e3a\u5176\u6e17\u94dc\u73b0\u8c61\u5c31\u5982\u540c\u706f\u82af\u5438\u6cb9\u7684\u539f\u7406\uff0c\u6545\u4ee5\u300c\u706f\u82af\u6548\u5e94\u300d\u79f0\u4e4b\uff0c\u5176\u5b9e\u8bf4\u7a7f\u4e86\u8fd9\u5c31\u662f\u4e00\u79cd\u300c<\/font>\u6bdb\u7ec6\u73b0\u8c61<\/font><\/a>\u300d\u7684\u4f53\u73b0\u3002<\/font><\/p>\n

\"<\/p>\n

\u8fd9\u91cc\u8981\u5148\u8bf4\u660e\u4e00\u4e0b\uff0c\u7535\u8def\u677f\u7684\u57fa\u6750\u4e2d\u9664\u4e86\u6709\u73bb\u7483\u7ea4\u7ef4\u7eb1\u675f\u5916\uff0c\u8fd8\u4f1a\u6dfb\u52a0\u5927\u91cf\u7684\u6df7\u5408\u6811\u8102(resin matrix)\u53ca\u586b\u5145\u6599(fillers)\u6765\u592f\u5b9e\u586b\u6ee1\u57fa\u677f\u7684\u7ed3\u6784\u4e0e\u5f3a\u5ea6\u3002\u5728\u6b63\u5e38\u7684\u60c5\u51b5\u4e0b\uff0c\u73bb\u7ea4\u7684\u5468\u56f4\u90fd\u4f1a\u88ab\u8fd9\u4e9b\u6811\u8102\u53ca\u586b\u5145\u6599\u5360\u6ee1\uff0c\u6240\u4ee5\u4e00\u822c\u300c\u706f\u82af(wicking)\u300d\u7684\u95ee\u9898\u4e0d\u4f1a\u592a\u4e25\u91cd\uff0c\u800c\u4e14\u706f\u82af\u7684\u6df1\u5ea6\u4e5f\u4e0d\u4f1a\u592a\u957f\u3002<\/font><\/p>\n

\u5efa\u8bae\u5ef6\u4f38\u9605\u8bfb\uff1a<\/font>\u7535\u8def\u677fPCB\u677f\u6750\u7684\u7ed3\u6784\u4e0e\u529f\u80fd\u4ecb\u7ecd<\/font><\/a><\/p>\n

\u5bf9\u4e8e\u4e2d\u56fd\u5927\u9646\u90a3\u4e9b\u76d7\u6587\u7f51\u7ad9\uff0c\u590d\u5236\u8d34\u4e0a\u672c\u7ad9\u6587\u7ae0\u540e\uff0c\u5c45\u7136\u8fd8\u6539\u6210\u81ea\u5df1\u516c\u53f8\u7684\u540d\u5b57\uff0c\u611f\u5230\u65e0\u803b\uff01\u6587\u7ae0\u5185\u5bb9\u90e8\u5206\u9632\u6b62\u590d\u5236\u7f16\u6392\u53ef\u80fd\u9020\u6210\u60a8\u9605\u8bfb\u7684\u4e0d\u4fbf\uff0c\u8bf7\u89c1\u8c05\uff01\uff09<\/font><\/em><\/p>\n

\u4f46\u662f\u300c\u706f\u82af(wicking)\u300d\u73b0\u8c61\u5728\u7ec4\u88c5\u7535\u8def\u677f(PCBA)\u4e0a\u786e\u5b9e\u662f\u4e2a\u54c1\u8d28\u7684\u4e0d\u5b9a\u65f6\u70b8\u5f39\uff0c\u56e0\u4e3a\u5728\u7279\u5b9a\u7684\u6761\u4ef6\u4e0b<\/font>\u706f\u82af(\u6e17\u94dc)\u7684\u957f\u5ea6\u53ef\u662f\u4f1a\u7ee7\u7eed\u751f\u957f\u7684\uff0c\u6700\u540e\u8fd8\u53ef\u80fd\u5f15\u8d77\u7535\u6027\u4e0a\u7684\u77ed\u8def(short)\uff0c\u9020\u6210\u7535\u5b50\u4ea7\u54c1\u529f\u80fd\u4e0d\u826f\uff0c\u6216\u662f\u6f0f\u7535\u6d41(leakage current)\u5927\u589e\u7b49\u95ee\u9898<\/span>\u3002\u6240\u4ee5\uff0c\u4e1a\u754c\u5176\u5b9e\u5728\u5f88\u65e9\u4ee5\u524d\u5c31\u5df2\u7ecf\u5728IPC-A-600\u4e2d\u63d0\u51fa\u8981\u7ba1\u63a7\u300c\u706f\u82af(wicking)\u300d\u957f\u5ea6\u7684\u5141\u6536\u6807\u51c6\u3002\uff08\u4e2a\u4eba\u8ba4\u4e3aIPC\u540e\u7eed\u5e94\u8be5\u4f1a\u7ee7\u7eed\u66f4\u65b0\u5e76\u52a0\u4e25\u8fd9\u4e2a\u6807\u51c6\uff0c\u56e0\u4e3a\u73b0\u5728\u7684\u6807\u51c6\u6709\u70b9\u592a\u5bbd\u677e\uff0c\u5df2\u7ecf\u4e0d\u7b26\u5408\u5f80\u540e\u79d1\u6280\u7684\u9700\u6c42\u4e86\u3002\uff09<\/font><\/p>\n