{"id":6831,"date":"2018-02-21T08:19:00","date_gmt":"2018-02-21T00:19:00","guid":{"rendered":"\/\/m.letratesoro.com\/?p=6831"},"modified":"2023-02-14T10:03:26","modified_gmt":"2023-02-14T02:03:26","slug":"solder-crack-study-01","status":"publish","type":"post","link":"\/\/m.letratesoro.com\/2018\/02\/solder-crack-study-01\/","title":{"rendered":"\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216BGA\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(1)\uff1f\u932b\u88c2\u53ea\u662f\u61c9\u529b\u5927\u65bc\u7d50\u5408\u529b\u4e4b\u5fc5\u7136\u7d50\u679c"},"content":{"rendered":"<p align=\"center\"><font size=\"4\">\uff08\u5c0d\u65bc\u5927\u9678\u90a3\u4e9b\u76dc\u6587\u7db2\u7ad9\uff0c\u8907\u88fd\u8cbc\u4e0a\u672c\u7ad9\u6587\u7ae0\u5f8c\uff0c\u5c45\u7136\u9084\u6539\u6210\u81ea\u5df1\u516c\u53f8\u7684\u540d\u5b57\uff0c\u611f\u5230\u7121\u6065\uff01\u6587\u7ae0\u5167\u5bb9\u90e8\u4efd\u9632\u6b62\u8907\u88fd\u4f5c\u6cd5\u53ef\u80fd\u9020\u6210\u60a8\u95b1\u8b80\u7684\u4e0d\u4fbf\uff0c\u8acb\u898b\u8ad2\uff01\uff09<\/font><\/p>\n<p align=\"center\"><font size=\"4\"><img decoding=\"async\" src=\"\/\/m.letratesoro.com\/wp-content\/uploads\/images\/Micro-USB_E60C\/micro-USB-fail06.jpg\" \/><\/font><\/p>\n<p><font size=\"4\"><strong>\u5beb\u5728\u524d\u9762\uff1a<\/strong>\u5de5\u4f5c\u718a\u9019\u7bc7\u6587\u7ae0\u8001\u5be6\u8aaa\u919e\u91c0\u4e86\u5f88\u4e45\uff0c\u4e5f\u5beb\u4e86\u5f88\u4e45\uff0c\u800c\u4e14\u6587\u7ae0\u7bc7\u5e45\u9084\u771f\u7684\u6709\u9ede\u9577\uff0c\u7b97\u4e86\u4e00\u4e0b\uff0c\u7e3d\u5171\u5206\u6210\u4e8613+1\u7bc7\u6587\u7ae0\u4f86\u767c\u8868\uff0c\u6587\u7ae0\u4e2d\u63d0\u5230\u7684\u8a31\u591a\u89c0\u5ff5\u5728\u5de5\u4f5c\u718a\u7684\u90e8\u843d\u683c\u4e2d\u5176\u5be6\u4e5f\u90fd\u662f\u8001\u751f\u5e38\u8ac7\u7684\u8b70\u984c\u4e86\uff0c\u4e0d\u904e\u5de5\u4f5c\u718a\u9019\u6b21\u7b97\u662f\u6bd4\u8f03\u6709\u7cfb\u7d71\u7684\u5c07\u4e4b\u6574\u7406\u51fa\u4f86\uff0c\u6240\u4ee5<\/font><font style=\"background-color: rgb(255, 255, 0);\" size=\"4\">\u5982\u679c\u4f60\u5c0d\u9019\u500b\u3010\u96fb\u5b50\u96f6\u4ef6BGA\u6389\u843d\u3011\u8b70\u984c\u6c92\u6709\u592a\u591a\u8208\u8da3\uff5e<\/font><font color=\"#ff0000\">\u52ff\u5165~<\/font><\/p>\n<p align=\"center\"><font size=\"4\"><img loading=\"lazy\" decoding=\"async\" title=\"\u5df2\u7d93\u710a\u932b\u597d\u7684\u96fb\u5b50\u96f6\u4ef6\u4e4b\u6240\u4ee5\u6703\u6389\u843d\u6216\u767c\u751f\u932b\u88c2\uff0c\u5176\u4e3b\u8981\u539f\u56e0\u61c9\u8a72\u53ef\u4ee5\u6b78\u7d50\u70ba\uff1a\u3010\u61c9\u529b(stress) &gt; \u7d50\u5408\u529b(bonding-force)\u3011\" style=\"border: 0px currentcolor; border-image: none; display: inline; background-image: none;\" border=\"0\" alt=\"\u5df2\u7d93\u710a\u932b\u597d\u7684\u96fb\u5b50\u96f6\u4ef6\u4e4b\u6240\u4ee5\u6703\u6389\u843d\u6216\u767c\u751f\u932b\u88c2\uff0c\u5176\u4e3b\u8981\u539f\u56e0\u61c9\u8a72\u53ef\u4ee5\u6b78\u7d50\u70ba\uff1a\u3010\u61c9\u529b(stress) &gt; \u7d50\u5408\u529b(bonding-force)\u3011\" src=\"\/\/m.letratesoro.com\/wp-content\/uploads\/%E6%87%89%E5%8A%9B%E9%AB%98%E6%96%BC%E7%B5%90%E5%90%88%E5%8A%9B.png\" width=\"455\" height=\"191\" \/><\/font><\/p>\n<p><!--more--><\/p>\n<p align=\"justify\"><font size=\"4\">\u5de5\u4f5c\u718a\u5176\u5be6\u5df2\u7d93\u4e0d\u662f\u4e00\u5169\u6b21\u88ab\u4eba\u5bb6\u9019\u6a23\u8cea\u7591\u4e86\uff0c\u6211\u5011\u5bb6\u7684RD\uff0c\u5c24\u5176\u662f\u65b0\u9032\u7684RD\uff0c\u4f3c\u4e4e\u6bcf\u6b21\u53ea\u8981\u4e00\u78b0\u5230\u96fb\u8def\u7d44\u88dd\u677f(Printed Circuit Assembly, PCA)\u4e0a\u6709<font style=\"background-color: rgb(255, 255, 0);\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d<\/font>\uff08\u5c24\u5176\u662fBGA\u96f6\u4ef6\uff09\u6216\u662f<font style=\"background-color: rgb(255, 255, 0);\">\u710a\u932b\u7834\u88c2<\/font>\u7684\u554f\u984c\uff0c\u7b2c\u4e00\u500b\u53cd\u61c9\u5c31\u662f\u5148\u8dd1\u4f86\u8cea\u7591\u6211\u5011SMT\u7d44\u88dd\u5de5\u5ee0\u7684\u710a\u932b\u4e00\u5b9a\u6709\u554f\u984c\uff0c\u800c\u4e14\u9084\u6703\u5f88\u5927\u8072\u7684\u8981\u6c42\u4e26\u5e0c\u671b\u5de5\u5ee0\u53ef\u4ee5\u589e\u52a0\u932b\u818f\u91cf\u4f86\u589e\u52a0\u710a\u932b\u5f37\u5ea6\u3002\u9019\u771f\u7684\u662f\u5920\u4e86\uff01<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u66f4\u8b93\u5de5\u4f5c\u718a\u53d7\u4e0d\u4e86\u7684\u662f\uff0c\u7522\u54c1\u660e\u660e\u662f\u5df2\u7d93\u505a\u904e\u4e86<a href=\"\/\/m.letratesoro.com\/2011\/09\/unit-drop-test\/\" target=\"_blank\" rel=\"noopener\">\u88f8\u6a5f\u6454\u843d\u885d\u64ca\u6e2c\u8a66(drop impact test)<\/a>\u6216\u662f<a href=\"\/\/m.letratesoro.com\/2013\/04\/tumble-test\/\" target=\"_blank\" rel=\"noopener\">\u6efe\u52d5\u6e2c\u8a66(tumble test)<\/a>\u5f8c\u767c\u751f\u7684\u4e0d\u826f\uff0c\u537b\u786c\u8981SMT\u88fd\u7a0b\u62ff\u51fa\u500b\u89e3\u6c7a\u8fa6\u6cd5\u589e\u52a0\u710a\u932b\u5f37\u5ea6\u4f86\u514b\u670d\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u7684\u554f\u984c\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u5de5\u4f5c\u718a\u9996\u5148\u8981\u6f84\u6e05\u4e00\u4ef6\u4e8b\uff0c\u300c<strong><font style=\"background-color: rgb(255, 255, 0);\" color=\"#0000ff\">\u710a\u932b\u7684\u4e3b\u8981\u76ee\u7684\u5728\u9023\u63a5\u96fb\u5b50\u96f6\u4ef6\u8207PCB\u7684\u8a0a\u865f\uff0c\u800c\u4e0d\u662f\u7528\u4f86\u89e3\u6c7a\u61c9\u529b\u53ca\u8b8a\u5f62\u7684\u554f\u984c<\/font><\/strong>\u300d\uff0c\u5225\u672c\u672b\u5012\u7f6e\u4e86\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u800c\u4e14<font size=\"4\">\u300c<strong><font style=\"background-color: rgb(255, 255, 0);\" color=\"#0000ff\">\u710a\u932b\u5f37\u5ea6\u57fa\u672c\u4e0a\u61c9\u8a72\u662f\u8207\u710a\u63a5\u7269\u7684\u63a5\u89f8\u9762\u7a4d\u6210\u6b63\u6bd4<\/font><\/strong>\u300d\uff0c\u800c\u4e0d\u662f\u8207\u710a\u63a5\u7684\u9ad4\u7a4d\u6210\u6b63\u6bd4\uff0c\u82e5\u662f\u60f3\u589e\u52a0\u710a\u932b\u5f37\u5ea6\u4e0d\u662f\u4e00\u5473\u7684\u589e\u52a0\u710a\u932b\u91cf\u5c31\u53ef\u4ee5\uff0c\u800c\u662f\u8981\u589e\u52a0\u96f6\u4ef6\u8207\u710a\u932b\u7684\u63a5\u89f8\u9762\u7a4d\uff0c\u5728PCB\u710a\u588a\u8868\u9762\u8655\u7406\u3001\u710a\u588a\u5927\u5c0f\u6216\u96f6\u4ef6\u710a\u8173\u5f62\u72c0\u4e0d\u6539\u8b8a\u7684\u539f\u5247\u4e0b\uff0c\u50c5\u589e\u52a0\u932b\u818f\u91cf\u662f\u5f88\u96e3\u589e\u52a0\u710a\u932b\u5f37\u5ea6\u7684\uff0c\u5de5\u4f5c\u718a\u4e4b\u524d\u5c31\u5df2\u7d93\u6709\u64b0\u6587\u8aaa\u660e\u904e\u9019\u500b\u89c0\u5ff5\uff0c\u9019\u88e1\u4e0d\u518d\u8d05\u8ff0\uff0c\u8a73\u7d30\u8acb\u53c3\u8003\u300c<\/font><a href=\"\/2015\/11\/soldering-strength\/\" target=\"_blank\" rel=\"noopener\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u710a\u63a5\u5f37\u5ea6\u7684\u89c0\u5ff5\u6f84\u6e05<\/font><\/a><font size=\"4\">\u300d\u4e00\u6587\uff0c\u800c\u5224\u65b7\u710a\u932b\u710a\u63a5\u5f97\u597d\u4e0d\u597d\uff08\u5403\u932b\u5403\u5f97\u597d\u4e0d\u597d\uff09\uff0c\u57fa\u672c\u4e0a\u53ea\u8981\u62ff\u53bb\u505a\u5207\u7247\u5f8c\u6aa2\u67e5\u5176IMC\u7684\u751f\u9577\u5206\u4f48\u5f97\u662f\u5426\u5747\u52fb\u5c31\u53ef\u4ee5\u77e5\u9053\u4e86\uff0c\u5982\u679cIMC\u6c92\u6709\u554f\u984c\uff0c\u90a3\u9ebc\u518d\u5982\u4f55\u8981\u6c42SMT\u5de5\u5ee0\u589e\u52a0\u710a\u932b\u91cf\u90fd\u7121\u6fdf\u65bc\u4e8b\u3002<\/font><\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u5982\u679c\u4f60\u9084\u4e0d\u77e5\u9053IMC\u662f\u4ec0\u9ebc\uff1f\u5efa\u8b70\u4f60\u5148\u770b\u770b\u9019\u7bc7\u6587\u7ae0\u4ee5\u4e86\u89e3\u3010<\/font><a href=\"\/2014\/03\/soldering-strength-imc\/\" target=\"_blank\" rel=\"noopener\"><font size=\"4\">\u4f55\u8b02IMC (Intermetallic Compound)\uff1fIMC\u8207PCB\u710a\u63a5\u5f37\u5ea6\u6709\u4f55\u95dc\u4fc2<\/font><\/a><font size=\"4\">\u3011\u3002<\/font><\/p>\n<p><font size=\"4\"><\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u5176\u5be6\uff0c\u5df2\u7d93\u710a\u63a5\u5b8c\u6210\u7684\u96fb\u5b50\u96f6\u4ef6\u4e4b\u6240\u4ee5\u6703\u6389\u843d\u6216\u767c\u751f\u932b\u88c2\uff0c\u5176\u4e3b\u8981\u539f\u56e0\u61c9\u8a72\u53ef\u4ee5\u6b78\u7d50\u70ba\uff1a<\/font><\/p>\n<p align=\"center\"><font size=\"4\"><font color=\"#0000ff\" size=\"5\"><strong>\u3010\u61c9\u529b(stress) &gt; \u7d50\u5408\u529b(bonding-force)\u3011<\/strong><\/font>\uff0c<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u56e0\u70ba\u53d7\u5230\u61c9\u529b\u4f5c\u7528\uff0c\u7136\u5f8c\u5f9e\u7d50\u5408\u529b\u6700\u8106\u5f31\u7684\u5730\u65b9\u958b\u59cb\u4f9d\u5e8f\u88c2\u958b\u3002\u800c\u300c\u710a\u932b\u5f37\u5ea6\u300d\u53ea\u662f\u6574\u500bPCA\u300c\u7d50\u5408\u529b(bonding-force)\u300d\u7684\u5176\u4e2d\u4e00\u74b0\u800c\u5df2\u3002<\/font><\/p>\n<p align=\"justify\"><font color=\"#0000ff\" size=\"5\"><strong>\u5982\u679c\u60f3\u8981\u5fb9\u5e95\u89e3\u6c7a\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u7684\u554f\u984c\u5c31\u5fc5\u9808\u5f9e\u4e0b\u9762\u5e7e\u500b\u9762\u5411\u4f86\u601d\u8003\u8207\u8457\u624b\u6539\u5584\uff1a<\/strong><\/font><\/p>\n<ul>\n<li>\n<div align=\"justify\"><font size=\"4\"><strong>\u589e\u52a0PCA\u7684\u7d50\u5408\u529b\u3002<\/strong>           <br \/> \u52a0\u5927\u710a\u588a\/\u710a\u76e4\u7684\u5c3a\u5bf8\uff0c\u53ef\u4ee5\u8003\u616e\u66f4\u6539\u300c<a href=\"\/\/m.letratesoro.com\/2018\/03\/solder-crack-study-05\/\" target=\"_blank\" rel=\"noopener\">NSMD\u710a\u588a<\/a>\u300d\u8a2d\u8a08\u70ba\u300c<a href=\"\/\/m.letratesoro.com\/2018\/03\/solder-crack-study-05\/\" target=\"_blank\" rel=\"noopener\">SMD\u710a\u588a<\/a>\u300d\u8a2d\u8a08\uff0c\u56e0\u70baSMD\u7684\u9285\u7b94\u5927\u5c0f\u5be6\u969b\u4e0a\u6bd4NSMD\u4f86\u5f97\u5927\uff0c\u6240\u4ee5\u5b83\u53ef\u4ee5\u5f37\u5316\u710a\u588a\u9ecf\u8cbc\u5728FR4\u7684\u80fd\u529b\uff0c\u4f46\u662fSMD\u537b\u4e0d\u5229\u710a\u932b\u5f37\u5ea6\uff0c\u4e5f\u5c31\u662f\u5b83\u6703\u5bb9\u6613\u5f9eIMC\u8655\u65b7\u88c2\u3002<strong><font color=\"#9b00d3\">\u800c\u6bd4\u8f03\u597d\u7684\u65b9\u6848\u64c7\u662f\u5c07\u710a\u588a\u8a2d\u8a08\u6210NSMD\uff0c\u4e26\u5728\u5176\u710a\u588a\u4e0a\u8a2d\u8a08via\u4e26\u96fb\u934d\u585e\u5b54\uff08\u6253\u5730\u6a01\uff09\u3002<\/font><\/strong><\/font><\/div>\n<p>     <strong><font color=\"#9b00d3\"><\/font><\/strong><\/li>\n<p>   <strong><font color=\"#9b00d3\"><\/font><\/strong>    <\/p>\n<li><strong><font color=\"#9b00d3\"><\/font><\/strong>\n<div align=\"justify\"><font size=\"4\"><strong>\u589e\u52a0\u96f6\u4ef6\u5c0d\u61c9\u529b\u7684\u62b5\u6297\u80fd\u529b\u3002<\/strong>           <br \/>BGA\u5c01\u88dd\u7684\u56db\u500b\u89d2\u843d\u662f\u932b\u7403\u6700\u5bb9\u6613\u767c\u751f\u710a\u932b\u7834\u88c2\u8655\uff0c\u56e0\u70ba\u53d7\u5230\u7684\u61c9\u529b\u6700\u5927\uff08\u529b\u8ddd\u6700\u9577\uff09\uff0cBGA\u8a2d\u8a08\u6642\u53ef\u4ee5\u8003\u616e\u5728\u56db\u500b\u89d2\u843d\u8a2d\u8a08\u6c92\u6709\u529f\u80fd\u8a0a\u865f\u7684\u5047\u7403(Dummy-ball)\u4e26\u4e14\u710a\u63a5\uff0c\u53ef\u4ee5\u8d77\u5230\u4fdd\u8b77BGA\u56db\u500b\u89d2\u843d\u710a\u9ede\u7684\u76ee\u7684\u3002<\/font><\/div>\n<\/li>\n<li>\n<div align=\"justify\"><font size=\"4\"><strong>\u900f\u904e\u6a5f\u69cb\u8a2d\u8a08\u964d\u4f4e\u61c9\u529b\u5c0d\u96fb\u8def\u677f\u8b8a\u5f62\u4e4b\u5f71\u97ff\u3002<\/strong>           <br \/> \u53ef\u4ee5\u8003\u616e\u900f\u904e\u6a5f\u69cb\u8a2d\u8a08\u4f86\u9802\u4f4f\u96fb\u8def\u677f\u5bb9\u6613\u8b8a\u5f62\u7684\u5730\u65b9\u4ee5\u6e1b\u8f15\u5176\u5f4e\u66f2\u91cf\uff0c\u4e5f\u53ef\u4ee5\u589e\u5f37\u6a5f\u69cb\u7684\u525b\u6027\u4ee5\u9632\u6b62\u5176\u8b8a\u5f62\u3002<\/font><\/div>\n<\/li>\n<\/ul>\n<p align=\"justify\"><font size=\"4\">\u9019\u88e1\u6709\u4e00\u500b\u89c0\u5ff5\u5de5\u4f5c\u718a\u5fc5\u9808\u518d\u5f37\u8abf\u4e00\u6b21\uff0c<font style=\"background-color: rgb(255, 255, 0);\">\u7576\u96fb\u8def\u677f(PCB)\u8a2d\u8a08\u5b8c\u6210\u5f8c\uff0c\u7d44\u88dd\u677f(PCA)\u710a\u932b\u7684\u7d50\u5408\u529b\u57fa\u672c\u4e0a\u4e5f\u5c31\u5927\u81f4\u56fa\u5b9a\u4e0b\u4f86\u4e86\uff0c\u4f46\u662f\u61c9\u529b(Stress)\u537b\u662f\u500b\u53ef\u8b8a\u56e0\u7d20\uff0c\u56e0\u70ba\u61c9\u529b\u7684\u4f86\u6e90\u7121\u6cd5\u5b8c\u5168\u53d7\u63a7<\/font>\uff0c\u6bd4\u5982\u8aaa\u7522\u54c1\u9707\u52d5\u6216\u662f\u4e0d\u5c0f\u5fc3\u6454\u843d\u5730\u9762&#8230;\u7b49\u56e0\u7d20\uff0c\u9019\u4e5f\u8aaa\u660e\u70ba\u4f55\u660e\u660e\u5403\u932b\u72c0\u614b\u4e0d\u8b8a\uff0c\u4f46\u6709\u4e9b\u7522\u54c1\u5c31\u662f\u6703\u767c\u751f\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\uff0c\u4f46\u6709\u4e9b\u7522\u54c1\u5247\u4e0d\u6703\uff0c\u56e0\u70ba\u5b83\u5011\u53d7\u5230\u4e86\u4e0d\u540c\u61c9\u529b\u7684\u4f5c\u7528\uff0c\u7576\u710a\u932b\u7684\u5f37\u5ea6\u4e0d\u8db3\u4ee5\u62b5\u6297\u61c9\u529b\u6642\u5c31\u6703\u767c\u751f\u65b7\u88c2\u3002\u6b63\u5e38\u4f86\u8aaa\uff0c\u7522\u54c1\u8a2d\u8a08\u6642\u61c9\u8a72\u8981\u6709<strong><font color=\"#0000ff\">\u5b89\u5168\u4fc2\u6578<\/font><\/strong>\u7684\u89c0\u5ff5\uff0c\u5de5\u4f5c\u718a\u500b\u4eba\u5efa\u8b70\u5b89\u5168\u4fc2\u6578\u81f3\u5c11\u8981\u67091.2\uff5e1.5\u4ee5\u4e0a\uff0c\u4e5f\u5c31\u662f\u8aaa\u7522\u54c1\u8a2d\u8a08\u6240\u80fd\u627f\u53d7\u7684\u61c9\u529b\u4e00\u5b9a\u8981\u9ad8\u65bc\u9810\u4f30\u61c9\u529b\u76841.2\uff5e1.5\u500d\u4ee5\u4e0a\uff0c\u56e0\u70ba\u4f60\u6c38\u9060\u4e0d\u77e5\u9053\u7522\u54c1\u771f\u6b63\u4f7f\u7528\u6642\u6240\u627f\u53d7\u7684\u61c9\u529b\u662f\u591a\u5c11\uff0c\u800c\u4e14\u96fb\u5b50\u96f6\u4ef6\u4f7f\u7528\u4e00\u6bb5\u6642\u9593\u5f8c\u5176\u710a\u63a5\u5f37\u5ea6\u4e5f\u6703\u9010\u6f38\u52a3\u5316\u8b8a\u8106\uff0c\u964d\u4f4e\u5176\u62b5\u6297\u61c9\u529b\u7684\u80fd\u529b\u3002<\/font><\/p>\n<p align=\"center\"><font color=\"#9b00d3\" size=\"5\"><strong>\u7528\u5f71\u7247\u89e3\u8aaa\u3010BGA\u767c\u751f\u932b\u88c2\u4e00\u5b9a\u662f\u710a\u932b\u554f\u984c\u55ce\uff1f\u932b\u88c2\u539f\u56e0\u8207\u89e3\u6c7a\u65b9\u6cd5\u63a2\u8a0e\u3011<\/strong><\/font>    <br \/><iframe loading=\"lazy\" title=\"YouTube video player\" height=\"327\" allowfullscreen=\"allowfullscreen\" src=\"https:\/\/www.youtube.com\/embed\/86kZikEaaxk\" frameborder=\"0\" width=\"580\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\"><\/iframe><\/p>\n<hr \/>\n<p><font size=\"4\"><strong>\u300c\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d\u300d\u7cfb\u5217\u6587\u7ae0\u5217\u8868\uff1a<\/strong><\/font><\/p>\n<ul>\n<li><a href=\"\/?p=6834\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(2)\uff1fPCA\u7684\u7d50\u5408\u529b\u5305\u542b\u6709\u54ea\u4e9b\uff1f<\/font><\/a><\/li>\n<li><a href=\"\/?p=6837\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(3)\uff1fIMC\u662f\u826f\u597d\u710a\u932b\u7d50\u679c\u7684\u5fc5\u8981\u4e4b\u60e1<\/font><\/a><\/li>\n<li><a href=\"\/?p=6841\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(4)\uff1fPCB\u8868\u9762\u8655\u7406\u6539\u7528\u300c\u9285\u300d\u57fa\u5730<\/font><\/a><\/li>\n<li><a href=\"\/?p=6845\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(5)\uff1f\u589e\u52a0\u710a\u932b\u7684\u63a5\u89f8\u9762\u7a4d\u4ee5\u589e\u52a0\u710a\u932b\u5f37\u5ea6<\/font><\/a><\/li>\n<li><a href=\"\/?p=6858\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(6)\uff1f\u5de5\u4f5c\u718a\u500b\u4eba\u7d66BGA\u710a\u588a\u8a2d\u8a08\u7684\u5efa\u8b70<\/font><\/a><\/li>\n<li><a href=\"\/?p=6861\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(7)\uff1f\u9285\u7b94\u710a\u588a\u8207PCB\u677f\u6750\u9593\u7684\u7d50\u5408\u529b(bonding-force)<\/font><\/a><\/li>\n<li><a href=\"\/?p=6870\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(8)\uff1f\u589e\u52a0PCB\u7684\u525b\u6027(stiffness)\u4f86\u62b5\u6297\u61c9\u529b\u907f\u514d\u677f\u5f4e\u7684\u5f71\u97ff<\/font><\/a><\/li>\n<li><a href=\"\/?p=6876\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(9)\uff1f\u589e\u52a0\u96f6\u4ef6\u5c0d\u61c9\u529b\u7684\u62b5\u6297\u80fd\u529b<\/font><\/a><\/li>\n<li><a href=\"\/?p=6884\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(10)\uff1f\u900f\u904e\u6a5f\u69cb\u8a2d\u8a08\u964d\u4f4e\u61c9\u529b\u5c0d\u96fb\u8def\u677f\u8b8a\u5f62\u4e4b\u5f71\u97ff<\/font><\/a><\/li>\n<li><a href=\"\/?p=6888\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(11)\uff1f\u61c9\u529b\u662f\u9020\u6210BGA\u710a\u932b\u7834\u88c2\u7684\u6700\u5927\u5147\u624b<\/font><\/a><\/li>\n<li><a href=\"\/?p=6895\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(12)\uff1f\u88fd\u9020\u5de5\u5ee0\u4e2d\u53ef\u80fd\u51fa\u73fe\u8f03\u5927\u61c9\u529b\u7684\u88fd\u7a0b<\/font><\/a><\/li>\n<li><a href=\"\/?p=6898\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(13)\uff1f\u61c9\u529b\u4f86\u6e90\u7684\u6700\u5927\u6311\u6230\uff1a\u4f7f\u7528\u74b0\u5883<\/font><\/a><\/li>\n<\/ul>\n<hr \/>\n<p><font size=\"4\">\u5ef6\u4f38\u95b1\u8b80\uff1a<\/font>     <br \/><a href=\"\/2010\/11\/vias-in-pad\/\"><font size=\"4\">\u5c0e\u901a\u5b54\u5728\u588a(Vias-in-pad)\u7684\u8655\u7406\u539f\u5247<\/font><\/a>     <br \/><a href=\"\/2013\/04\/tumble-test\/\"><font size=\"4\">\u6efe\u7b52\u6e2c\u8a66(tumble test)\u7684\u65b9\u6cd5\u8207\u5931\u6548\u89e3\u6c7a\u5c0d\u7b56<\/font><\/a>     <br \/><a href=\"\/2011\/03\/bga-dropped\/\"><font size=\"4\">\u5982\u4f55\u5224\u65b7BGA\u6389\u4ef6\u662fSMT\u5de5\u5ee0\u88fd\u7a0b\u6216\u662f\u8a2d\u8a08\u554f\u984c?<\/font><\/a>     <br \/><a href=\"\/2015\/03\/component-drop-analyze\/\"><font size=\"4\">\u96fb\u8def\u677f\u96f6\u4ef6\u6389\u843d\uff0c\u8a72\u5982\u4f55\u8457\u624b\u5206\u6790\u3001\u5224\u65b7\u4e26\u91d0\u6e05\u554f\u984c\u9ede<\/font><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uff08\u5c0d\u65bc\u5927\u9678\u90a3\u4e9b\u76dc\u6587\u7db2\u7ad9\uff0c\u8907\u88fd\u8cbc\u4e0a\u672c\u7ad9\u6587\u7ae0\u5f8c\uff0c\u5c45\u7136 &#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28,3,4],"tags":[47,208,157],"aioseo_notices":[],"views":18008,"_links":{"self":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/6831"}],"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=6831"}],"version-history":[{"count":3,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/6831\/revisions"}],"predecessor-version":[{"id":9504,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/6831\/revisions\/9504"}],"wp:attachment":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/media?parent=6831"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/categories?post=6831"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/tags?post=6831"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}