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PTH)\u710a\u8173\uff0c\u9019\u6a23\u53ef\u4ee5\u5927\u5927\u7684\u52a0\u5f37\u710a\u63a5\u7684\u5f37\u5ea6\u3002<\/font><\/p>\n \u4e0d\u904e\u5de5\u4f5c\u718a\u5728\u672c\u6587\u4e2d\u5c07\u6bd4\u8f03\u6709\u7cfb\u7d71\u7684\u5c07\u9019\u4e9b\u89c0\u5ff5\u6574\u7406\u51fa\u4f86\u7d66\u5927\u5bb6\u63d0\u4f9b\u53c3\u8003\uff1a<\/font><\/p>\n <\/p>\n \u6bd4\u5982\u8aaa\u5c07\u539f\u672c\u7684\u5851\u81a0(plastic)\u6a5f\u6bbc\u6750\u8cea\u6539\u6210\u91d1\u5c6c(metal)\u6a5f\u6bbc\uff0c\u4f86\u589e\u5f37\u5176\u62b5\u6297\u5916\u529b\u885d\u64ca\u7684\u80fd\u529b\u3001\u6216\u662f\u5728\u4e0d\u66f4\u63db\u6a5f\u6bbc\u6750\u8cea\u7684\u60c5\u6cc1\u4e0b\u4e5f\u53ef\u4ee5\u8003\u616e\u589e\u52a0\u808b\u689d(rib)\u65bc\u53d7\u529b\u9762\u4f86\u52a0\u5f37\u5176\u62b5\u6297\u61c9\u529b\u8b8a\u5f62\u7684\u80fd\u529b\u3002<\/font><\/p>\n \u53e6\u5916\uff0c\u4e5f\u6709\u4eba\u5229\u7528\u4e00\u4ef6\u5f0f\u7684\u5c4f\u853d\u7f69(directly mount shielding can)\u4f86\u8986\u84cb\u5728\u5bb9\u6613\u7522\u751f\u710a\u932b\u7834\u88c2\u7684BGA\u96f6\u4ef6\u8655\u4ee5\u589e\u5f37\u8a72\u90e8\u4efd\u7684\u5f37\u5ea6\uff0c\u8a72\u5c4f\u853d\u7f69\u9084\u5fc5\u9808\u9078\u7528\u525b\u6027\u6750\u8cea\u505a\u62bd\u51fa\u8655\u7406\u624d\u80fd\u5f62\u6210\u4e00\u500b\u5b8c\u597d\u7684\u7897\u84cb\u3002<\/font><\/p>\n \u4e0d\u904e\u5de5\u4f5c\u718a\u500b\u4eba\u4e0d\u592a\u5efa\u8b70\u9019\u6a23\u7684\u8a2d\u8a08\uff0c\u56e0\u70ba\u4e00\u4ef6\u5f0f\u5c4f\u853d\u7f69\u5c0d\u96fb\u8def\u677f\u7684\u7dad\u4fee\u975e\u5e38\u4e0d\u5229\uff0c\u800c\u4e14\u5176\u4f9d\u9760\u7684\u4e00\u5927\u90e8\u5206\u4e5f\u662f\u710a\u932b\u7684\u529b\u91cf\uff0c\u4e00\u65e6\u5c4f\u853d\u7f69\u7684\u710a\u932b\u53d7\u4e0d\u4e86\u61c9\u529b\u800c\u88c2\u958b\uff0c\u5c31\u6703\u4e00\u8def\u88c2\u5230BGA\u7684\u932b\u7403\u3002<\/font><\/p>\n 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<\/font><\/p>\n3.\u7528\u7de9\u885d\u6750\u4f86\u964d\u4f4e\u7522\u54c1\u53d7\u5230\u885d\u64ca\u5f8c\u5c0d\u96fb\u8def\u677f\u7684\u4f5c\u7528\u529b<\/strong><\/font><\/h2>\n
4.\u4f7f\u7528BGA\u5e95\u90e8\u586b\u5145\u81a0(underfill)\u4f86\u589e\u52a0\u710a\u9ede\u62b5\u6297\u885d\u64ca\u61c9\u529b\u7684\u80fd\u529b<\/font><\/h2>\n
![](\"\/\/m.letratesoro.com\/wp-content\/uploads\/images\/Underfill_123A5\/Underfill02_thumb.jpg\")
Underfill(\u5e95\u90e8\u586b\u5145\u81a0)<\/a>\u539f\u672c\u662f\u8a2d\u8a08\u7d66\u8986\u6676\u6676\u7247(Flip Chip)\u4f7f\u7528\u4ee5\u589e\u5f37\u5176\u4fe1\u8cf4\u5ea6\u7528\u7684\u88fd\u7a0b\u8207\u81a0\u6c34\uff0c\u539f\u672c\u7684\u76ee\u7684\u662f\u70ba\u4e86\u4fdd\u8b77\u6676\u7247(chip)\u8207\u57fa\u677f(substrate)\u4e4b\u9593\u81a8\u8139\u4fc2\u6578\u5dee\u7570\u904e\u5927\uff0c\u65bc\u8139\u51b7\u7e2e\u6642\u9020\u6210\u5fae\u5c0f\u9593\u9699\u5f71\u97ff\u6676\u7247\u6027\u80fd\uff0c\u5f8c\u4f86BGA\u5c01\u88dd\u958b\u59cb\u6d41\u884c\u5f8c\uff0c\u5f88\u591a\u7684CPU\u4e5f\u958b\u59cb\u4f7f\u7528\u8d77BGA\u5c01\u88dd\uff0c\u4f46\u7919\u65bc\u7576\u6642\u7684\u79d1\u6280\uff0cBGA\u5176\u5be6\u662f\u6709\u4e00\u5b9a\u539a\u5ea6\u7684\uff0c\u800c\u4e14\u96a8\u8457CPU\u7684\u904b\u7b97\u80fd\u529b\u8d8a\u4f86\u8d8a\u5f37\u5927\uff0cBGA\u7684\u5c3a\u5bf8\u4e5f\u5c31\u8d8a\u4f86\u8d8a\u5927\u9846\uff0c\u4e5f\u4f7f\u5f97BGA\u5c01\u88dd\u6676\u7247\u5177\u6709\u4e00\u5b9a\u91cd\u91cf\uff0c\u9019\u500b\u91cd\u91cf\u662f\u975e\u5e38\u4e0d\u5229\u65bc\u7522\u54c1\u6454\u843d\u6642\u6240\u7522\u751f\u7684\u91cd\u529b\u885d\u64ca\uff0c\u65bc\u662f\uff0c\u65e9\u671f\u5f88\u591aBGA\u5c01\u88dd\u70ba\u4e86\u78ba\u4fdd\u7522\u54c1\u7684\u54c1\u8cea\uff0c\u90fd\u6703BGA\u7684\u5e95\u90e8\u704cunderfill\u81a0\u4f86\u52a0\u5f37\u5176\u6454\u843d\u6642\u7684\u54c1\u8cea\u8868\u9762\u3002<\/font><\/p>\n![](\"\/\/m.letratesoro.com\/wp-content\/uploads\/BGA_underfill_crack01.png\")
\u96a8\u8457\u88fd\u9020\u5de5\u85dd\u7684\u65e5\u76ca\u767c\u9054\uff0c\u73fe\u5728\u591a\u6578\u7684BGA\u5c01\u88dd\u5176\u5be6\u5df2\u7d93\u8d8a\u505a\u8d8a\u5c0f\uff0c\u6454\u843d\u6642\u7684\u91cd\u91cf\u885d\u64ca\u4e5f\u4e0d\u518d\u662f\u6700\u654f\u611f\u7684\u8981\u7d20\uff0c\u4f46\u96a8\u8457\u96fb\u5b50\u7522\u54c1\u7684\u8da8\u5c0f\u5316\uff0c\u5370\u5237\u96fb\u8def\u677f\u7684\u539a\u5ea6\u5247\u662f\u8d8a\u4f86\u8d8a\u8584\uff0c\u76f8\u5c0d\u5730\u96fb\u5b50\u7522\u54c1\u5c0d\u65bc\u8010\u5f4e\u6298\u7684\u9700\u6c42\u4e5f\u8d8a\u4f86\u8d8a\u9ad8\uff0c\u53ef\u60dc\u7684\u662f\u73fe\u5728\u4ee5\u300c\u932b\u300d\u70ba\u57fa\u790e\u7684\u710a\u9ede\u5176\u5be6\u662f\u975e\u5e38\u4e0d\u8010\u5f4e\u6298\u7684\uff0c\u96d6\u7136\u5728BGA\u5e95\u90e8\u586b\u5145underfill\u53ef\u4ee5\u5728\u6454\u843d\u885d\u64ca\u6e2c\u8a66\u4e2d\u7372\u5f97\u4e0d\u932f\u7684\u77ed\u66ab\u61c9\u529b\u62b5\u6297\u80fd\u529b\uff0c\u4f46\u662f\u537b\u7121\u6cd5\u627f\u53d7\u9577\u671f\u7684\u5370\u5237\u96fb\u8def\u677f\u5f4e\u6298\u61c9\u529b\u3002<\/font><\/p>\n
\n\n
\n
<\/font>\u6efe\u7b52\u6e2c\u8a66(tumble test)\u7684\u65b9\u6cd5\u8207\u5931\u6548\u89e3\u6c7a\u5c0d\u7b56<\/font><\/a>
\u5982\u4f55\u5224\u65b7BGA\u6389\u4ef6\u662fSMT\u5de5\u5ee0\u88fd\u7a0b\u6216\u662f\u8a2d\u8a08\u554f\u984c?<\/font><\/a>
\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":"