{"id":6606,"date":"2017-09-13T08:15:00","date_gmt":"2017-09-13T00:15:00","guid":{"rendered":"\/\/m.letratesoro.com\/?p=6606"},"modified":"2022-11-21T10:51:18","modified_gmt":"2022-11-21T02:51:18","slug":"no-2sides-bga","status":"publish","type":"post","link":"\/\/m.letratesoro.com\/2017\/09\/no-2sides-bga\/","title":{"rendered":"\u70ba\u4ec0\u9ebcSMT\u5de5\u7a0b\u5e2b\u4e0d\u559c\u6b61\u6709\u96d9\u9762BGA\u7684PCB\u8a2d\u8a08\uff1fBGA\u5404\u7a2e\u5b54\u6d1e\u7684\u578b\u614b\u8207\u53ef\u80fd\u539f\u56e0(microvoids, shrinkage voids, pinhole voids)"},"content":{"rendered":"<p align=\"center\"><font size=\"4\"><img decoding=\"async\" title=\"\u70ba\u4ec0\u9ebcSMT\u5de5\u7a0b\u5e2b\u4e0d\u559c\u6b61\u6709\u96d9\u9762BGA\u7684PCB\u8a2d\u8a08\uff1fBGA\u5404\u7a2e\u5b54\u6d1e\u7684\u578b\u614b\u8207\u53ef\u80fd\u539f\u56e0(microvoids, pinhole voids)\" alt=\"\u70ba\u4ec0\u9ebcSMT\u5de5\u7a0b\u5e2b\u4e0d\u559c\u6b61\u6709\u96d9\u9762BGA\u7684PCB\u8a2d\u8a08\uff1fBGA\u5404\u7a2e\u5b54\u6d1e\u7684\u578b\u614b\u8207\u53ef\u80fd\u539f\u56e0(microvoids, pinhole voids)\" src=\"\/\/m.letratesoro.com\/wp-content\/uploads\/2021\/07\/two-sides-BGA-reflow.png\" \/><\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u4e00\u822c\u4f86\u8aaa\u53ea\u8981\u6709\u5728SMT\u751f\u7522\u6253\u6efe\u904e\u7684\u5de5\u7a0b\u5e2b\uff0c\u4ed6\u5011\u5927\u591a\u4e0d\u559c\u6b61\u751f\u7522\u6709\u96d9\u9762BGA\u8a2d\u8a08\u7684PCB\uff0c\u56e0\u70ba\u677f\u5b50\u4e0a\u6709BGA\u7684\u5b58\u5728\u672c\u8eab\u5c31\u5df2\u7d93\u4e0d\u592a\u5bb9\u6613\u751f\u7522\u4e86\uff0c\u800c\u96d9\u9762\u90fd\u6709BGA\u8a2d\u8a08\u7684\u677f\u5b50\u53c8\u6bd4\u53ea\u6709\u55ae\u9762BGA\u8a2d\u8a08\u7684PCB\u66f4\u5bb9\u6613\u7522\u751f\u4e0d\u826f\u54c1\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u6709\u4e0d\u826f\u54c1\u5c31\u610f\u8b02\u8457\u6709\u7121\u7aae\u7121\u76e1\u7684\u6539\u5584\u5f97\u505a\uff0c\u800c\u4e14BGA\u91cd\u5de5\u901a\u5e38\u8cbb\u6642\u53c8\u8cbb\u52c1\uff0c\u91cd\u5de5\u5f8c\u9084\u4e0d\u4e00\u5b9a\u5c31\u53ef\u7528\uff0c\u4f60\u8aaa\u6709\u90a3\u500bSMT\u5de5\u7a0b\u5e2b\u72af\u50bb\u4e86\u3002<\/font><\/p>\n<p><!--more--><\/p>\n<p><b><font color=\"#0000ff\" size=\"5\">\u90a3\u70ba\u4ec0\u9ebc\u96d9\u9762BGA\u7684PCB\u8f03\u5bb9\u6613\u51fa\u73fe\u4e0d\u826f\u54c1\u5462\uff1f<\/font><\/b><\/p>\n<blockquote>\n<p align=\"justify\"><font size=\"4\"><font face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u6b63\u5e38\u60c5\u6cc1BGA\u96f6\u4ef6\u901a\u5e38\u6703\u88ab\u5b89\u6392\u5728\u7b2c\u4e8c\u9762\u624d\u904ereflow\uff0c\u9019\u662f\u70ba\u4e86\u907f\u514d\u7b2c\u4e00\u9762reflow\u7684\u7f3a\u9ede\u5728\u7b2c\u4e8c\u9762reflow\u6642\u88ab\u653e\u5927\uff0c\u9019\u4e9b\u7f3a\u9ede\u5305\u542bBGA\u710a\u7403\u5b54\u6d1e(void)\u6bd4\u7387\u589e\u52a0\u3001<\/font><a title=\"BGA\u6795\u982d\u6548\u61c9(head-in-pillow,HIP)\u767c\u751f\u7684\u53ef\u80fd\u539f\u56e0\u8207\u6a5f\u7406\" href=\"\/2012\/02\/bga-hip\/\" target=\"_blank\" rel=\"noopener\"><font face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">HIP\/HoP<\/font><\/a><font face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u6216<\/font><a title=\"BGA\u865b\u710aNWO(Non-Wet-Open)\u5f62\u6210\u7684\u539f\u56e0\u53ca\u53ef\u80fd\u89e3\u6c7a\u65b9\u6cd5\" href=\"\/2016\/04\/bga-nwo\/\" target=\"_blank\" rel=\"noopener\"><font face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">NWO<\/font><\/a><font face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u7a7a\u5047\u710a\u6bd4\u7387\u589e\u52a0\u3001\u710a\u9ede\u8106\u5316\u3001BGA\u96f6\u4ef6\u6389\u843d\u7b49\u4e3b\u8981\u554f\u984c\uff0c\u6b21\u8981\u554f\u984c\u662f\u96d9\u9762BGA\u7684\u677f\u5b50\u7dad\u4fee\u4e0d\u6613\u3002<\/font><\/font><\/p>\n<\/blockquote>\n<p><b><font color=\"#0000ff\" size=\"5\">\u4e8c\u6b21\u56de\u710a\u5f8cBGA\u710a\u7403\u5b54\u6d1e(void)\u6bd4\u7387\u589e\u52a0<\/font><\/b><\/p>\n<blockquote>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u4e00\u822c\u8a8d\u70ba\u662f\u9019\u56e0\u70ba\u4e8c\u6b21\u56de\u710a\u6642\uff0cBGA\u932b\u7403\u53ef\u80fd\u91cd\u65b0\u7194\u878d\uff0c\u8b93\u539f\u672c\u6563\u5e03\u65bcBGA\u5167\u7684\u8a31\u591a\u7d30\u5c0f\u5b54\u6d1e(micro-void)\u6709\u6a5f\u6703\u91cd\u65b0\u805a\u96c6\u6210\u70ba\u4e00\u500b\u8f03\u5927\u7684\u5b54\u6d1e(void)\uff0c\u7576\u932b\u7403\u7684Void\u8d8a\u5927\uff0c\u5c31\u8868\u793a\u932b\u7403\u7684\u53ef\u9760\u6027\u8d8a\u5dee\uff0cIPC-7095\u5167\u6709\u898f\u5b9a\u5b54\u6d1e\u4e0d\u5f97\u5927\u65bc\u4e00\u5b9a\u7684\u767e\u5206\u6bd4\uff0c\u56e0\u70ba\u4e00\u65e6\u7522\u54c1\u53d7\u5230\u843d\u4e0b\u3001\u632f\u52d5\u7b49\u5916\u529b\u5f71\u97ff\u6642\u6709\u5b54\u6d1e\u7684\u932b\u7403\u65b7\u88c2\u6a5f\u7387\u5c31\u8d8a\u9ad8\u3002<\/font><\/p>\n<\/blockquote>\n<p align=\"center\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\"><img decoding=\"async\" title=\"Type of solder voids (BGA\u5404\u7a2e\u7a7a\u6d1e\u578b\u614b)\" alt=\"Type of solder voids (BGA\u5404\u7a2e\u7a7a\u6d1e\u578b\u614b)\" src=\"\/\/m.letratesoro.com\/wp-content\/uploads\/2017\/Type_of_solder_voids.png\" \/><\/font><\/p>\n<blockquote>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">BGA\u932b\u7403\u7684\u5b54\u6d1e(void)\u53ef\u4e0d\u50c5\u50c5\u662f\u90a3\u4e9b\u8089\u773c\u53ef\u4ee5\u770b\u5230\u7684\u800c\u5df2\uff0c\u6709\u5c08\u5bb6\u91dd\u5c0dBGA\u932b\u7403\u7684\u5b54\u6d1e\u5206\u6210\u4e86\u4e0b\u5217\u5e7e\u985e\uff1a<\/font><\/p>\n<ul>\n<li>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">Marco Voids\uff1a\u5c31\u662f\u932b\u7403\u4e2d\u6bd4\u8f03\u5927\u7684\u5b54\u6d1e\uff0c\u4e00\u822c\u70ba\u932b\u818f\u4e2d\u52a9\u710a\u5291\u63ee\u767c\u7684\u6c23\u9ad4\u6240\u5f62\u6210\uff0c\u932b\u818f\u4e2d\u771f\u6b63\u7528\u4f5c\u710a\u932b\u7684\u932b\u7c89\u5176\u5be6\u53ea\u4f54\u4e8650%\u7684\u9ad4\u7a4d\uff0c\u5269\u4e0b\u768450%\u70ba\u52a9\u710a\u5291\u3002\u932b\u7403\u8d8a\u5927\u5247\u53ef\u80fd\u5f62\u6210\u7684\u5b54\u6d1e\u5c31\u8d8a\u591a\u3002            <br \/>\u60f3\u591a\u4e86\u89e3\u932b\u818f\u8207\u52a9\u710a\u5291\u53ef\u4ee5\u53c3\u8003\u9019\u7bc7\u6587\u7ae0\u300a<a href=\"\/\/m.letratesoro.com\/2013\/04\/solder-paste\/\" target=\"_blank\" rel=\"noopener\">\u4ecb\u7d39\u4e26\u8a8d\u8b58\u3010\u932b\u818f(solder paste)\u3011\u7684\u57fa\u672c\u77e5\u8b58(\u542b\u52a9\u710a\u5291)<\/a>\u300b\u3002<\/font><\/p>\n<\/li>\n<li>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">Planar Micro-voids\uff1a<strike>\u4e00\u822c\u51fa\u73fe\u65bcSMD(Solder-Mask-Defined)\u7684\u677f\u5b50\uff0c\u56e0\u70ba\u932b\u818f\u6709\u6a5f\u6703\u5370\u5237\u65bc\u9632\u710a\u5c64\uff0c\u9632\u710a\u5c64\u8207\u710a\u588a\u4e4b\u9593\u7684\u9ad8\u5ea6\u5dee\u8207\u9632\u710a\u8868\u9762\u7c97\u7cd9\u5ea6\u6240\u5f62\u6210\u7684\u5b54\u6d1e\u3002<\/strike>             <br \/>\u9019\u7a2e\u5e73\u9762\u5fae\u5b54\u6d1e(planar micro-voids)\u7d93\u5e38\u51fa\u73fe\u5728\u710a\u9ede\u548cPCB\u7684\u9285\u7b94\u5c64\u4e4b\u9593\uff0c\u5176\u4e3b\u8981\u539f\u56e0\u70baPCB\u7684\u8868\u9762\u8655\u7406(surface finishes)\u4e0d\u5920\u7d30\u7dfb\uff0c\u5728\u8868\u9762\u8655\u7406\u8207\u9285\u7b94\u4e4b\u9593\u7559\u4e0b\u4e86\u4e00\u4e9b\u5fae\u5c0f\u7684\u5b54\u6d1e(cave)\uff0c\u65bc\u56de\u6d41\u710a\u7684\u9ad8\u6eab\u904e\u7a0b\u4e2d\u5c0f\u6d1e\u5167\u7684\u7a7a\u6c23\u88ab\u52a0\u71b1\u81a8\u8139\u6490\u5927\u4ee5\u81f4\u5f62\u6210\u7a7a\u6d1e\u3002\u9019\u7a2e\u7a7a\u6d1e\u6700\u5e38\u51fa\u73fe\u5728ImAg\u8868\u9762\u8655\u7406\u7684\u677f\u5b50\u4e0a\u3002<\/font><\/p>\n<\/li>\n<li>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">Shrinkage Voids\uff1a\u7e2e\u6536\u88c2\u7d0b\u5b54\u6d1e\u3002\u932b\u7403\u5916\u58c1\u5728\u51b7\u537b\u904e\u7a0b\u4e2d\u6240\u5f62\u6210\u7684\u6676\u679d\u72c0(dendritic)\u5c0f\u88c2\u7d0b\uff0c\u4e00\u822c\u5bb9\u6613\u51fa\u73fe\u5728SAC\u7684\u932b\u7403\u6216\u710a\u9ede\u8868\u9762\u3002shrinkage voids\u767c\u751f\u7684\u539f\u56e0\u4e00\u822c\u90fd\u6307\u5411\u51b7\u537b\u901f\u7387\u904e\u6162\u6240\u5c0e\u81f4\u3002\u5927\u81f4\u6210\u56e0\u70ba\u710a\u9ede\u7684\u7de9\u6162\u51b7\u537b\u6700\u7d42\u200b\u200b\u5c0e\u81f4\u710a\u932b\u5728\u51dd\u56fa\u524d\u7684\u5171\u6676(eutectic)\u76f8\u5f85\u5f97\u4e45\u5c0e\u81f4\u904e\u5ea6\u6536\u7e2e\u3002\u4e5f\u5c31\u662f\u710a\u932b\u5f9e\u6db2\u614b\u51b7\u537b\u8f49\u8b8a\u70ba\u56fa\u614b\u6642\u5728\u5728\u7194\u9ede\u5340\u5f85\u5f97\u904e\u4e45\uff0c\u9020\u6210\u710a\u6599\u904e\u5ea6\u6536\u7e2e\u8868\u9762\u51fa\u73fe\u88c2\u7d0b\u3002<\/font><\/p>\n<\/li>\n<li>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">Micro-Via Voids\uff1a\u901a\u5e38\u662f\u5728via-in-pad\u7684\u710a\u588a\/\u710a\u76e4\u4e0a\u6240\u5f62\u6210\u7684\u5b54\u6d1e\uff0c\u7279\u5225\u662f\u534a\u76f2\u5b54\uff0c\u56e0\u70ba\u932b\u818f\u5370\u4e0a\u53bb\u6642\u5c07\u7a7a\u6c23\u9650\u7e2e\u5728\u534a\u76f2\u5b54\u4e2d\u3002            <br \/>\u53e6\u5916\uff0c\u5373\u4f7fvia\u6709\u586b\u5b54\uff0c\u4f46\u662f\u586b\u5b54\u5f8c\u7684dimple\u592a\u5927\u4e5f\u6703\u5f62\u6210\u6c23\u5b54\u3002             <br \/>\u66fe\u7d93\u770b\u904e\u6587\u737b\u8aaa\u4f7f\u7528\u6a39\u8102\u586b\u5b54\u5f8c\u934d\u9285\u7684via-in-pad\uff0c\u56e0\u70ba\u5176\u586b\u5b54\u5bc6\u5be6\u5ea6\u53ef\u80fd\u5b58\u5728\u7e2b\u9699\uff0c\u518d\u52a0\u4e0a\u5982\u679c\u934d\u9285\u592a\u8584\u6216\u5b58\u5728\u5fae\u5c0f\u7834\u5b54\uff0c\u5728\u56de\u710a\u7684\u904e\u7a0b\u4e2d\u5c31\u53ef\u80fd\u5c07\u586b\u5b54\u7e2b\u9699\u4e2d\u7684\u7a7a\u6c23\u7d66\u903c\u9032\u932b\u7403\u4e2d\u5bc6\u5c01\u3002<\/font><\/p>\n<\/li>\n<li>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">InterMetallic Micro-voids\uff1aIMC\u5c64\u9577\u6642\u9593\u6216\u591a\u6b21\u71b1\u5faa\u74b0\u5f8c\u8001\u5316\u5f62\u6210\u65bcIMC\u9644\u8fd1\u7684\u5b54\u6d1e\u3002<\/font><\/p>\n<\/li>\n<li>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">Pinhole Micro-voids\uff1a\u9019\u985e\u5b54\u6d1e\u4e00\u822c\u51fa\u73fe\u5728IMC\u5c64\uff0c\u53ef\u80fd\u539f\u56e0\u70ba\u96fb\u8def\u677f\u4e0a\u91d1\u5c6c\u5c64\u539f\u672c\u7684\u7d30\u5c0f\u5b54\u6d1e\u6240\u5f62\u6210\u3002<\/font><\/p>\n<\/li>\n<\/ul>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u76f8\u95dc\u95b1\u8b80\uff1a        <br \/><\/font><a href=\"\/2012\/01\/penetration-accept-criteria\/\" target=\"_blank\" rel=\"noopener\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u7d05\u58a8\u6c34\u67d3\u7d05\u6e2c\u8a66\u5206\u6790(Dye Test)\u7684\u5141\u6536\u6a19\u6e96<\/font><\/a>       <br \/><a href=\"\/2014\/03\/soldering-strength-imc\/\" target=\"_blank\" rel=\"noopener\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u4f55\u8b02IMC (Intermetallic Compound)\uff1fIMC\u8207PCB\u710a\u63a5\u5f37\u5ea6\u6709\u4f55\u95dc\u4fc2\uff1f<\/font><\/a><\/p>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u76ee\u524d\u61c9\u8a72\u662f\u7121\u6cd5\u5b8c\u5168\u907f\u514dBGA\u932b\u7403\u5b54\u6d1e(voids)\u7684\u767c\u751f\uff0c\u4e0d\u904e\u53ef\u4ee5\u5728\u56de\u710a\u7210\u5167\u52a0\u6c2e\u6c23(N<sub>2<\/sub>)\u4f86\u589e\u52a0\u710a\u932b\u7684\u6f64\u6fd5\u6027\u4e26\u964d\u4f4e\u932b\u7403\u5b54\u6d1e\u7684\u767c\u751f\u7387\u3002<\/font><\/p>\n<\/blockquote>\n<p><b><font color=\"#0000ff\" size=\"5\">\u4e8c\u6b21\u56de\u710a\u5f8c\uff0c\u710a\u9ede\u8106\u5316\uff0c\u627f\u53d7\u843d\u6454\u80fd\u529b\u8b8a\u5dee<\/font><\/b><\/p>\n<blockquote>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u9019\u500b\u61c9\u8a72\u662f\u5c6c\u65bc\u4fe1\u8cf4\u5ea6\u7684\u554f\u984c\uff0c\u800c\u4e14\u5c6c\u65bc\u4e0d\u53ef\u9006\u7684\u53cd\u61c9\uff0c\u66f4\u751a\u7684\u9019\u4e00\u822c\u5728\u88fd\u9020\u5de5\u5ee0\u662f\u6e2c\u8a66\u4e0d\u51fa\u4f86\u7684\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u9019\u662f\u56e0\u70ba\u6bcf\u7d93\u904e\u4e00\u6b21Reflow\u5c31\u662f\u5c0d\u710a\u932b\u7684\u518d\u4e00\u6b21\u52a0\u71b1\uff0c\u800c\u6bcf\u4e00\u6b21\u7684\u52a0\u71b1\u90fd\u6703\u8b93IMC\u5c64\u8b8a\u5f97\u66f4\u539a\uff0c\u4e5f\u5c31\u662f\u8001\u5316\uff0c\u9285\u57fa\u5730\u7684IMC (InterMetallic Compound) \u9084\u6703\u5f9e\u539f\u672c\u7684\u826f\u6027Cu<sub>6<\/sub>Sn<sub>5<\/sub>\u8f49\u8b8a\u70ba\u52a3\u6027\u7684Cu<sub>3<\/sub>Sn\u3002\u4e0d\u8ad6\u662f\u54ea\u7a2e\u91d1\u5c6c\u57fa\u5730\u7684PCB\uff0c\u7576IMC\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u539a\uff0c\u5c31\u8868\u793a\u710a\u932b\u8b8a\u5f97\u8d8a\u8106\uff0c\u4e5f\u8d8a\u7121\u6cd5\u627f\u53d7\u843d\u4e0b\u6642\u7684\u885d\u64ca\u529b\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u53ef\u4ee5\u628aIMC\u60f3\u50cf\u6210\u78da\u584a\u9593\u7684\u6c34\u6ce5\uff0c\u4e0d\u540c\u7684\u78da\u584a\u5206\u5c6c\u4e0d\u540c\u7684\u91d1\u5c6c\uff0c\u5176\u9593\u5fc5\u9808\u5f62\u6210\u985e\u4f3c\u6c34\u6ce5\u7684IMC\u624d\u80fd\u4e92\u76f8\u9023\u63a5\u5728\u4e00\u8d77\uff0c\u5982\u679c\u6c34\u6ce5\u5c64\u8d8a\u539a\uff08IMC\u5c64\u8d8a\u539a\uff09\uff0c\u7576\u78da\u584a\u627f\u53d7\u5230\u63a8\u62c9\u61c9\u529b\u6642\uff0c\u5c31\u8d8a\u5bb9\u6613\u5f9e\u6c34\u6ce5\u5c64\u65b7\u88c2\uff0c\u5728\u710a\u63a5\u4e2d\u5c31\u662fIMC\u5c64\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u60f3\u9032\u4e00\u6b65\u4e86\u89e3IMC\u8acb\u53c3\u8003\u3010<\/font><a href=\"\/\/m.letratesoro.com\/2014\/03\/soldering-strength-imc\/\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">PCB\u710a\u63a5\u5f37\u5ea6\u8207IMC\u89c0\u5ff5<\/font><\/a><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u3011\u4e00\u6587\u3002<\/font><\/p>\n<\/blockquote>\n<p><font color=\"#0000ff\" size=\"5\"><strong>BGA\u96f6\u4ef6\u65bc\u7b2c\u4e8c\u9762\u56de\u710a\u6642\u6389\u843d\u7684\u98a8\u96aa<\/strong><\/font><\/p>\n<blockquote>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u6b63\u5e38\u60c5\u6cc1\u4e0b\u6253\u5728\u7b2c\u4e00\u9762\u7684BGA\u96f6\u4ef6\u61c9\u8a72\u4e0d\u81f3\u65bc\u5728\u7b2c\u4e8c\u9762\u904e\u7210\u6642\u6389\u843d\u65bc\u56de\u710a\u7210\u5167\u7684\uff0c\u5de5\u4f5c\u718a\u516c\u53f8\u7684\u7522\u54c1\u6709\u8cbc\u904eARM CPU\u4e5f\u6c92\u6709\u6389\u904e\u4ef6\uff0c\u4e0d\u904e\u5982\u679c\u6709\u91cd\u91cf\u6bd4\u8f03\u91cd\u7684BGA\u5c31\u96e3\u8aaa\u4e86\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u4e0d\u904e\u770b\u7db2\u8def\u4e0a\u5076\u800c\u9084\u662f\u6703\u6709\u7db2\u53cb\u63d0\u554fBGA\u6389\u4ef6\u554f\u984c\uff0c\u5982\u679c\u770b\u6587\u7684\u670b\u53cb\u6709\u5be6\u969b\u767c\u751f\u7684\u6848\u4f8b\u53ef\u4ee5\u63d0\u51fa\u4f86\u4e00\u8d77\u8a0e\u8ad6\u3002<\/font><\/p>\n<p><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u76f8\u95dc\u95b1\u8b80\uff1a<\/font>       <br \/><a href=\"\/2015\/10\/2nd-reflow-component-drop\/\" target=\"_blank\" rel=\"noopener\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u4e8c\u6b21\u56de\u710a\u6642\u907f\u514d\u7b2c\u4e00\u9762\u96f6\u4ef6\u6389\u843d\u7684\u89e3\u6c7a\u65b9\u6cd5<\/font><\/a>       <br \/><a href=\"\/2016\/09\/sac305-2nd-reflow-temperature\/\" target=\"_blank\" rel=\"noopener\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u70ba\u4ec0\u9ebcSMT\u4e8c\u6b21\u56de\u710a\u6642\u7b2c\u4e00\u9762\u96f6\u4ef6\u4e0d\u6703\u6389\u843d\uff1f\u518d\u56de\u710a\u7194\u932b\u6eab\u5ea6\u6703\u5347\u9ad8?<\/font><\/a><\/p>\n<\/blockquote>\n<p><font color=\"#0000ff\" size=\"5\"><strong>\u5982\u679c\u7121\u6cd5\u907f\u514d\u96d9\u9762BGA\u7684\u8a2d\u8a08\u51fa\u73fe\uff0c\u90a3\u6709\u6c92\u6709\u4ec0\u9ebc\u6bd4\u8f03\u597d\u7684\u5efa\u8b70\u53ef\u4ee5\u964d\u4f4e\u5176\u98a8\u96aa\u5462\uff1f<\/strong><\/font><\/p>\n<blockquote>\n<p align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u8001\u5be6\u8aaa\u5de5\u4f5c\u718a\u9084\u672a\u767c\u73fe\u6709\u9019\u65b9\u9762\u7684\u5de5\u696d\u6a19\u6e96\uff0c\u4e0d\u904e\u6839\u64da\u4ee5\u4e0a\u7bc7\u5e45\u8aaa\u660e\u96d9\u9762BGA\u7684\u7f3a\u9ede\uff0c\u5de5\u4f5c\u718a\u6709\u4ee5\u4e0b\u7684\u5efa\u8b70\uff1a<\/font><\/p>\n<ul>\n<li><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u76e1\u53ef\u80fd\u5c11\u653eBGA\u96f6\u4ef6\u65bc\u7b2c\u4e00\u9762reflow\u3002<\/font> <\/li>\n<li>\n<div align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u5c07\u91cd\u91cf\u6bd4\u8f03\u8f15\u3001\u5c3a\u5bf8\u6bd4\u8f03\u5c0f\u3001\u932b\u7403pitch\u6bd4\u8f03\u5927\u7684BGA\u8a2d\u7f6e\u5728\u7b2c\u4e00\u9762\u3002<\/font> <\/div>\n<\/li>\n<li><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u5c07\u6bd4\u8f03\u91cd\u8981\u7684BGA\u96f6\u4ef6\uff08\u5982CPU\uff09\u8a2d\u7f6e\u5728\u7b2c\u4e8c\u9762Reflow\u3002<\/font> <\/li>\n<li>\n<div align=\"justify\"><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u76e1\u91cf\u4e0d\u8981\u5c07BGA\u96f6\u4ef6\u8a2d\u7f6e\u65bcPCB\u7684\u6b63\u4e2d\u5fc3\uff0c\u56e0\u70ba\u6b63\u4e2d\u5fc3\u901a\u5e38\u662fPCB\u8b8a\u5f62\u6700\u56b4\u91cd\u7684\u4f4d\u7f6e\u3002<\/font> <\/div>\n<\/li>\n<\/ul>\n<p><font size=\"4\" face=\"\u5fae\u8edf\u6b63\u9ed1\u9ad4\">\u76f8\u95dc\u95b1\u8b80\uff1a        <br \/><a href=\"\/2016\/05\/smt-qa\/\" target=\"_blank\" rel=\"noopener\">\u7d66\u521d\u5b78\u8005\u7684Q&amp;A\uff1a\u95dc\u65bcSMT\u92fc\u677f\u3001\u6253\u4ef6\u9762\u9806\u5e8f\u6c7a\u5b9a\u3001DFM\u3001DFX<\/a><\/font><\/p>\n<\/blockquote>\n<hr \/>\n<p><font size=\"4\">\u5ef6\u4f38\u95b1\u8b80\uff1a      <br \/><\/font><a href=\"\/2011\/02\/soldering-defect-symptom\/\"><font size=\"4\">\u96fb\u8def\u677f\u4e0a\u5e38\u898b\u7684\u710a\u932b\u7f3a\u9ede\u4e2d\u82f1\u6587\u5c0d\u7167\u8207\u89e3\u91cb<\/font><\/a>     <br \/><a href=\"\/2015\/11\/smt-soldering-cause-solution\/\"><font size=\"4\">\u6574\u7406SMT\u56de\u6d41\u710a\u63a5\u7f3a\u9ede\u3001\u53ef\u80fd\u539f\u56e0\u53ca\u5176\u5c0d\u7b56<\/font><\/a>     <br \/><a href=\"\/2015\/06\/pth-npth-via\/\"><font size=\"4\">\u96fb\u8def\u677f\u4e0a\u70ba\u4f55\u8981\u6709\u5b54\u6d1e\uff1f\u4f55\u8b02PTH\/NPTH\/vias(\u5c0e\u901a\u5b54)<\/font><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u822c\u4f86\u8aaa\u53ea\u8981\u6709\u5728SMT\u751f\u7522\u6253\u6efe\u904e\u7684\u5de5\u7a0b\u5e2b\uff0c\u4ed6\u5011\u5927 &#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28,22,3,4],"tags":[],"aioseo_notices":[],"views":18008,"_links":{"self":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/6606"}],"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=6606"}],"version-history":[{"count":8,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/6606\/revisions"}],"predecessor-version":[{"id":10468,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/6606\/revisions\/10468"}],"wp:attachment":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/media?parent=6606"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/categories?post=6606"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/tags?post=6606"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}