{"id":6845,"date":"2018-03-21T08:13:00","date_gmt":"2018-03-21T00:13:00","guid":{"rendered":"\/\/m.letratesoro.com\/?p=6845"},"modified":"2024-01-28T20:40:46","modified_gmt":"2024-01-28T12:40:46","slug":"solder-crack-study-05","status":"publish","type":"post","link":"\/\/m.letratesoro.com\/2018\/03\/solder-crack-study-05\/","title":{"rendered":"\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216BGA\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"},"content":{"rendered":"<p align=\"center\"><font color=\"#ff0000\" 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size=\"4\">\u4f46\u53ef\u5225\u56e0\u70ba\u9019\u6a23\u5c31\u6025\u8457\u5c07\u6240\u6709\u7684BGA\u710a\u588a\u90fd\u6539\u6210NSMD\u710a\u588a\u8a2d\u8a08\u5594\uff01\u6709\u4e00\u597d\u5c31\u6c92\u4e8c\u597d\u554a\uff01\u9019\u500b\u4e16\u754c\u662f\u516c\u5e73\u7684\uff0c\u65e2\u4f7f\u4f60\u770b\u5230\u7684SMD\u53caNSMD\u6240\u797c\u9732\u51fa\u4f86\u7684\u710a\u588a\u8868\u9762\u4f3c\u4e4e\u6709\u8457\u4e00\u6a23\u7684\u5927\u5c0f\uff0c\u4f46SMD\u710a\u588a\u7684\u5be6\u969b\u5c3a\u5bf8\u5176\u5be6\u6bd4NSMD\u8981\u4f86\u5f97\u5927\u4e0a\u8a31\u591a\u5594\uff01\uff08\u8996Layout\u4f48\u7dda\u7684\u8a2d\u8a08\u800c\u5b9a\uff09\uff0c\u56e0\u70baSMD\u7684\u710a\u588a\u5176\u5be6\u6709\u4e00\u5927\u90e8\u5206\u53ea\u662f\u88ab\u7da0\u6f06(Solder-Mask)\u7d66\u8986\u84cb\u4f4f\uff0c\u4e0d\u4ed4\u7d30\u770b\u5bb9\u6613\u88ab\u6b3a\u9a19\u800c\u5df2\uff0c\u5c31\u56e0\u70baNSMD\u7684\u710a\u588a\u5c3a\u5bf8\u6bd4\u8f03\u5c0f\uff0c\u5e7e\u4e4e\u53ea\u6bd4BGA\u7684\u932b\u7403\u5927\u4e00\u9ede\u9ede\u800c\u5df2\uff0c\u6240\u4ee5SMD\u53ef\u4ee5\u627f\u53d7\u62c9\u62d4\u7684\u80fd\u529b\u6703\u6bd4\u8f03\u5dee\uff0c\u4e00\u65e6\u767c\u751fBGA\u932b\u7403\u7834\u88c2\u6642\uff0c\u7d93\u5e38\u53ef\u898bNSMD\u7684\u710a\u588a\u662f\u9023\u8457\u932b\u7403\u4e00\u584a\u5152\u88ab\u62d4\u8d77\u7684\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u5c31\u5982\u5de5\u4f5c\u718a\u4e4b\u524d\u8aaa\u904e\u7684\uff0c\u61c9\u529b\u6703\u81ea\u5df1\u5c0b\u627e\u7d50\u5408\u529b\u6700\u8106\u5f31\u7684\u5730\u65b9\u4f86\u5ba3\u6d29\uff0c\u7576\u710a\u588a\u5f9eNSMD\u6539\u6210SMD\u5f8c\uff0c\u710a\u932b\u529b\u4e5f\u8ddf\u8457\u589e\u5f37\u4e4b\u5f8c\uff0c\u710a\u932bIMC\u5c64\u62b5\u6297\u61c9\u529b\u7684\u80fd\u529b\u5927\u904e\u4e86PCB\u9285\u7b94\u9644\u8457\u65bc\u57fa\u6750\u4e0a\u7684\u7d50\u5408\u529b\u6642\uff08SMD\u710a\u588a\u5c3a\u5bf8\u8b8a\u5c0f\u4e86\uff09\uff0c\u7834\u88c2\u7684\u5730\u65b9\u5c31\u8f49\u8b8a\u6210\u4e86\u710a\u588a\u8207FR4\u57fa\u6750\u4e4b\u9593\u4e86\u3002\u6240\u4ee5\u5de5\u4f5c\u718a\u9084\u662f\u8a8d\u70ba\uff0c\u5982\u679c\u60f3\u5fb9\u5e95\u89e3\u6c7aBGA\u7834\u88c2\u7684\u554f\u984c\uff0c\u61c9\u8a72\u9084\u662f\u8981\u671d\u6e1b\u5c11\u61c9\u529b\u4f5c\u7528\u4f86\u9032\u884c\uff0c\u624d\u6709\u6a5f\u6703\u5f97\u5230\u6700\u597d\u7684\u6539\u5584\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u6240\u4ee5\uff0c\u7d50\u8ad6\u662fNSMD\u710a\u588a\u7684\u5403\u932b\u6027\u8f03SMD\u710a\u588a\u512a\uff0c\u800cSMD\u710a\u588a\u7684\u710a\u588a\u7d50\u5408\u529b\u5247\u6bd4NSMD\u710a\u588a\u4f86\u5f97\u597d\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">SMD: Solder-Mask-Defined pads\uff08\u9632\u710a\u5b9a\u7fa9\u710a\u588a\uff09<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">NSMD: Non-Solder-Mask-Defined pads\uff08\u975e\u9632\u710a\u5b9a\u7fa9\u710a\u588a\uff09\uff0c\u53c8\u7a31\u70baCopper Defined pads\uff08\u9285\u7b94\u5b9a\u7fa9\u710a\u588a\uff09<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u5efa\u8b70\u5ef6\u4f38\u95b1\u8b80\uff1a<a href=\"\/\/m.letratesoro.com\/2014\/10\/bga-pad-design\/\" rel=\"noopener\" target=\"_blank\">\u5982\u4f55\u8a2d\u8a08\u52a0\u5f37\u7522\u54c1\u7684BGA\u710a\u588a\u5f37\u5ea6\u4ee5\u9632\u6b62BGA\u958b\u88c2\uff08SolderMask Defined, SMD\uff09<\/a><\/font><\/p>\n<hr \/>\n<p><font color=\"#0000ff\" size=\"4\"><strong>2.\u4f7f\u7528\u901a\u5b54\u710a\u8173\u4f86\u53d6\u4ee3\u8868\u9762\u8cbc\u710a<\/strong><\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u5176\u5be6\uff0c\u96fb\u5b50\u96f6\u4ef6\u63a1\u7528\u8868\u9762\u8cbc\u710a(Surface mount)\u7684\u710a\u932b\u5f37\u5ea6\u518d\u600e\u9ebc\u6539\u5584\uff0c\u5176\u62b5\u6297\u61c9\u529b\u7684\u80fd\u529b\u5c31\u662f\u90a3\u6a23\uff0c\u60f3\u8981\u518d\u589e\u52a0\u710a\u932b\u5f37\u5ea6\u5c31\u53ea\u80fd\u5229\u7528\u7d50\u69cb\u8a2d\u8a08\uff0c\u5c07\u53d7\u5230\u7684\u61c9\u529b\u50b3\u5c0e\u7d66\u5176\u4ed6\u7684\u6a5f\u69cb\u4f86\u627f\u53d7\uff0c\u800c\u6700\u80fd\u7acb\u7aff\u898b\u5f71\u7684\u5c31\u662f\u76f4\u63a5\u5c07\u5f15\u8173\u505a\u6210\u76f4\u7acb\u7684\u7a7f\u5b54(Plating Hole)\u8a2d\u8a08\uff0c\u9019\u6a23\u5c31\u53ef\u4ee5\u5c07\u5f15\u8173\u53d7\u5230\u7684\u61c9\u529b\u518d\u50b3\u5c0e\u7d66PCB\u7684\u5b54\u58c1\u4f86\u627f\u53d7\uff0c\u76f8\u5c0d\u7684\u4e5f\u53ef\u4ee5\u589e\u52a0\u710a\u932b\u7684\u5f37\u5ea6\u3002\u8f03\u5e38\u898b\u7684\u4f5c\u6cd5\u662f\u5c07\u96f6\u4ef6\u7684\u90e8\u4efd\u710a\u8173\u5f9e\u8868\u9762\u8cbc\u710a\u88fd\u7a0b\u6539\u6210\u901a\u5b54\u710a\u63a5\uff0c\u6bd4\u5982Micro-USB\u9023\u63a5\u5668\u7684\u9435\u6846\u710a\u8173\uff0c\u5b83\u57fa\u672c\u4e0a\u9084\u662f\u8d70SMT\u88fd\u7a0b\uff0c\u53ea\u662f\u90e8\u4efd\u710a\u8173\u63a1\u7528<\/font><a href=\"\/\/m.letratesoro.com\/2015\/02\/smd-to-pih\/\"><font size=\"4\">PIH(Paste-In-Hole)<\/font><\/a><font size=\"4\">\u88fd\u7a0b\uff0c\u6700\u65b0\u7684Type-C\u4e5f\u6709\u9023\u63a5\u5668\u5ee0\u5546\u51fa\u901a\u5b54\u53ca\u8868\u9762\u8cbc\u710a\u6df7\u5408\u8173\u7684\u96f6\u4ef6\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u53e6\u5916\uff0c\u91dd\u5c0dBGA\u5c01\u88dd\u96f6\u4ef6\uff0c\u53ef\u4ee5\u8003\u616e\u5c07\u5c0e\u901a\u5b54(vias)\u653e\u7f6e\u65bcPCB\u7aef\u7684\u710a\u588a\u4e0a\uff0c\u76ee\u7684\u5c31\u662f\u5728\u710a\u588a\u6253\u4e0a\u925a\u91d8\u4ee5\u589e\u5f37\u710a\u588a\u9644\u8457\u65bcFR4\u7684\u5f37\u5ea6\uff0c\u9019\u5c31\u985e\u4f3c\u623f\u5b50\u6253\u5730\u693f\u9632\u9707\u7684\u9053\u7406\u985e\u4f3c\uff0c\u4e0d\u904e\u710a\u588a\u4e0a\u7684\u5c0e\u901a\u5b54\u4e00\u5b9a\u8981\u96fb\u934d\u586b\u5b54\uff0c\u5426\u5247BGA\u7684\u932b\u7403\u53ef\u80fd\u6703\u5f62\u6210\u5b54\u6d1e(Void\/bubble)\u554f\u984c\uff0c\u56b4\u91cd\u7684\u8a71\u751a\u81f3\u6703\u9020\u6210\u6795\u982d\u6548\u61c9(head in pillow)\u7684\u4e0d\u826f\u73fe\u8c61\u3002<\/font><\/p>\n<p><font size=\"4\">\u5efa\u8b70\u76f8\u95dc\u95b1\u8b80\uff1a<\/font><a href=\"\/\/m.letratesoro.com\/2010\/11\/vias-in-pad\/\"><font size=\"4\">\u5c0e\u901a\u5b54\u5728\u588a(Vias-in-pad)\u7684\u8655\u7406\u539f\u5247<\/font><\/a><\/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=\"\/\/m.letratesoro.com\/?p=6831\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\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<\/font><\/a><\/li>\n<li><a href=\"\/\/m.letratesoro.com\/?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=\"\/\/m.letratesoro.com\/?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=\"\/\/m.letratesoro.com\/?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=\"\/\/m.letratesoro.com\/?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=\"\/\/m.letratesoro.com\/?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=\"\/\/m.letratesoro.com\/?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=\"\/\/m.letratesoro.com\/?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=\"\/\/m.letratesoro.com\/?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=\"\/\/m.letratesoro.com\/?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=\"\/\/m.letratesoro.com\/?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=\"\/\/m.letratesoro.com\/?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=\"\/\/m.letratesoro.com\/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=\"\/\/m.letratesoro.com\/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=\"\/\/m.letratesoro.com\/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":10883,"_links":{"self":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/6845"}],"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=6845"}],"version-history":[{"count":7,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/6845\/revisions"}],"predecessor-version":[{"id":11108,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/6845\/revisions\/11108"}],"wp:attachment":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/media?parent=6845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/categories?post=6845"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/tags?post=6845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}