{"id":3875,"date":"2015-11-25T08:11:00","date_gmt":"2015-11-25T00:11:00","guid":{"rendered":"\/\/m.letratesoro.com\/?p=3875"},"modified":"2021-11-24T11:36:49","modified_gmt":"2021-11-24T03:36:49","slug":"smt-soldering-cause-solution","status":"publish","type":"post","link":"\/\/m.letratesoro.com\/2015\/11\/smt-soldering-cause-solution\/","title":{"rendered":"\u6574\u7406SMT\u56de\u6d41\u710a\u63a5\u7f3a\u9ede\u3001\u53ef\u80fd\u539f\u56e0\u53ca\u53ef\u80fd\u5c0d\u7b56"},"content":{"rendered":"

\"\u6574\u7406SMT\u56de\u6d41\u710a\u63a5\u7f3a\u9ede\u3001\u53ef\u80fd\u539f\u56e0\u53ca\u5176\u5c0d\u7b56\"\u9019\u662f\u4e00\u4efd\u5728\u7db2\u8def\u4e0a\u6d41\u50b3\u95dc\u65bcPCB\u7d44\u88ddSMT\u56de\u6d41(reflow)\u6642\u7684\u710a\u63a5\u554f\u984c\u9ede\u3001\u53ef\u80fd\u539f\u56e0\u53ca\u53ef\u80fd\u5c0d\u7b56\u4e4b\u6574\u7406\u8868\u683c\uff0c\u5de5\u4f5c\u718a\u5c07\u5176\u505a\u4e86\u6574\u7406\u8207\u4fee\u6539\u4e26\u52a0\u5165\u4e00\u4e9b\u500b\u4eba\u7684\u898b\u89e3\uff0c\u4e5f\u9806\u4fbf\u5c07\u4e4b\u524d\u66fe\u7d93\u5728\u3010<\/font>\u5de5\u4f5c\u72c2\u4eba<\/font><\/a>\u3011\u90e8\u843d\u683c\u4e2d\u767c\u8868\u904e\u7684\u8a31\u591a\u76f8\u95dc\u6587\u7ae0\u505a\u4e86\u8d85\u9023\u7d50\uff0c\u8b93\u8868\u683c\u66f4\u5bb9\u6613\u95b1\u8b80\uff0c\u4e5f\u53ef\u4ee5\u6709\u66f4\u8a73\u7d30\u7684\u6587\u7ae0\u53ef\u4ee5\u505a\u9032\u4e00\u6b65\u7684\u7814\u7a76\u8207\u53c3\u8003\u3002<\/font><\/p>\n

\u5176\u5be6SMT\u7684\u56de\u6d41\u710a\u63a5\u554f\u984c\uff0c\u5927\u9ad4\u570d\u7e5e\u5728\u6eab\u5ea6\u5747\u52fb\u3001\u96f6\u4ef6\u710a\u8173\u6216\u96fb\u8def\u677f\u710a\u588a\u7684\u5403\u932b\u6027\u8207\u932b\u818f\u5370\u5237\u7b49\u4e09\u5927\u8981\u7d20\u6253\u8f49\uff0c\u53ea\u8981\u671d\u9019\u4e09\u500b\u65b9\u5411\u53bb\u5206\u6790\uff0cSMT\u5927\u90e8\u4efd\u7684\u710a\u63a5\u554f\u984c\u90fd\u53ef\u4ee5\u627e\u5230\u7b54\u6848\u3002<\/font><\/p>\n

\u5982\u679c\u4f60\u767c\u73fe\u6587\u7ae0\u4e2d\u6709\u4ec0\u9ebc\u932f\u8aa4\u6216\u7591\u554f\uff0c\u6b61\u8fce\u7559\u8a00\u6aa2\u8a0e\uff5e<\/font><\/p>\n

<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n
\u554f\u984c\u8207\u73fe\u8c61<\/font><\/strong><\/td>\n\u53ef\u80fd\u539f\u56e0<\/font><\/strong><\/td>\n\u53ef\u80fd\u5c0d\u7b56<\/font><\/strong><\/td>\n<\/tr>\n
SMD\u96f6\u4ef6\u6f02\u79fb\u3001\u65cb\u8f49<\/td>\n\n

1.\u96f6\u4ef6\u5169\u7aef\u53d7\u71b1\u4e0d\u5747\u3002<\/p>\n

2.\u96f6\u4ef6\u4e00\u7aef\u5403\u932b\u4e0d\u4f73\u3002<\/p>\n<\/td>\n

\n

1.1 \u589e\u52a0\u71b1\u963b(thermal relief)<\/a>\u3002
1.2 Reflow\u63a1\u7528\u99ac\u978d\u578b<\/a>\u4e26\u5ef6\u9577\u9810\u71b1(150~170\u2103)\u6642\u9593\u3002
2.1 \u78ba\u4fdd\u96f6\u4ef6\u53caPCB\u710a\u588a\u7121\u6c27\u5316\u3002
2.2 \u78ba\u8a8d\u96f6\u4ef6\u7684\u710a\u932b\u934d\u5c64\u8207\u932b\u818f\u7684\u6210\u4efd\u76f8\u5bb9\u3002<\/p>\n<\/td>\n<\/tr>\n

BGA\u932b\u7403\u8207\u932b\u7403\u9593\u77ed\u8def<\/td>\n\n

1.\u932b\u818f\u91cf\u904e\u591a <\/p>\n

2.\u932b\u818f\u5370\u5237\u504f\u79fb <\/p>\n

3.\u932b\u818f\u574d\u584c <\/p>\n

4.\u522e\u5200\u58d3\u529b\u904e\u5c0f
5.\u92fc\u677f\u8207\u96fb\u8def\u677f\u9593\u9699\u592a\u5927 <\/p>\n

6.\u9632\u710a\u5370\u5237\u504f\u79fb(\u91dd\u5c0dSMD\u4f48\u7dda<\/a>)<\/p>\n<\/td>\n

\n

1.\u6e1b\u5c11\u932b\u818f\u5370\u5237\u91cf(\u964d\u4f4e\u92fc\u677f\u539a\u5ea6\u3001\u6e1b\u5c0f\u92fc\u677f\u958b\u53e3 )\u3002
2.1\u8abf\u6574\u92fc\u677f\u5c0d\u4f4d\u6e96\u5ea6\u3002
2.2\u78ba\u8a8d\u96fb\u8def\u677f\u62fc\u677f\u7cbe\u5ea6\u7b26\u5408\u9700\u6c42\u3002
3.1\u8abf\u6574Reflow\u66f2\u7dda<\/a>\u3002
3.2\u78ba\u8a8d\u932b\u818f\u54c1\u8cea\u72c0\u6cc1\u3002
4.\u589e\u52a0\u522e\u5200\u7684\u58d3\u529b\u53ca\u901f\u5ea6\u3002
5.1\u6aa2\u67e5\u92fc\u677f\u7684\u5f35\u529b\u7b26\u5408\u898f\u5b9a\u4e14\u7121\u8b8a\u5f62\u3002
5.2\u6aa2\u67e5\u9632\u710a\u8207\u7d72\u5370\u5c64\u539a\u5ea6\u7b26\u5408\u898f\u5b9a<\/a>\u3002
6.\u78ba\u8a8d\u9632\u710a\u5370\u5237\u504f\u79fb\u8986\u84cb\u4e0d\u53ef\u5f71\u97ff\u710a\u588a\u958b\u53e3\u5c3a\u5bf8<\/a>\u3002<\/p>\n<\/td>\n<\/tr>\n

BGA\u932b\u7403\u7a7a\u710a\u6216\u6795\u982d\u6548\u61c9(HIP)<\/a>
<\/td>\n		\n

1.\u932b\u818f\u91cf\u592a\u5c11
2.\u932b\u7403\u4e0d\u6cbe\u932b
3.Vias-in-pad<\/a>
4.\u96fb\u8def\u677f\u710a\u588a\u4e0d\u5403\u932b
5.BGA\u6216PCB\u9ad8\u6eab\u8b8a\u5f62
6.\u932b\u818f\u5370\u5237\u91cf\u4e0d\u4e00\u81f4
7.\u932b\u7403\u5927\u5c0f\u4e0d\u4e00\u81f4\u6216\u4e0d\u5e73\u6574<\/p>\n<\/td>\n

\n

1.\u589e\u52a0\u92fc\u677f\u539a\u5ea6\u6216\u52a0\u5927\u958b\u5b54<\/a>\u3002
2.\u6aa2\u67e5\u932b\u7403\u662f\u5426\u6c27\u5316\u3002
3.\u8b8a\u66f4\u8a2d\u8a08\u70ba\u586b\u5b54\u4f5c\u696d\u6216\u589e\u52a0\u932b\u91cf\u3002 4.\u6aa2\u67e5\u96fb\u8def\u677f\u662f\u5426\u710a\u588a\u6c27\u5316\u3002
5.\u6e1b\u7de9\u6607\u6eab\u901f\u7387\u3001\u589e\u52a0\u932b\u91cf\u3001\u4f7f\u7528\u904e\u7210\u8f09\u5177<\/a>\u3002
6.\u6aa2\u8a0e\u92fc\u677f\u7684\u958b\u5b54\u53ca\u932b\u818f\u5370\u5237\u53c3\u6578\u3002
7.\u78ba\u8a8d\u932b\u7403\u5c3a\u5bf8\u662f\u5426\u7b26\u5408\u898f\u5b9a\u3002<\/p>\n<\/td>\n<\/tr>\n

\u6709\u8173SMD\u96f6\u4ef6\u7a7a\u710a
<\/td>\n		\n

1.\u96f6\u4ef6\u8173\u4e0d\u5e73\u6574
2.\u932b\u818f\u91cf\u592a\u5c11
3.\u71c8\u854a\u6548\u61c9(\u8a3b1<\/a>)
4.\u96f6\u4ef6\u8173\u4e0d\u5403\u932b
5.Vias-in-pad<\/a>
6.\u96fb\u8def\u677f\u710a\u588a\u4e0d\u5403\u932b<\/p>\n<\/td>\n

\n

1.\u78ba\u8a8d\u96f6\u4ef6\u8173\u5e73\u6574\u5ea6\u7b26\u5408\u898f\u5b9a\u3002
2.\u589e\u52a0\u92fc\u677f\u539a\u5ea6\u6216\u52a0\u5927\u958b\u5b54\u3002
3.\u8abf\u964dReflow\u5347\u6eab\u901f\u7387<\/a>\u6216\u8207\u4f9b\u61c9\u5546\u6aa2\u8a0e\u96f6\u4ef6\u8173\u5403\u932b\u6027\u3002(\u6709\u4e00\u8aaa\u70d8\u70e4\u932b\u818f\uff0c\u76ee\u7684\u61c9\u8a72\u662f\u8b93\u932b\u9ad8\u4e2d\u7684\u52a9\u710a\u5291\u63ee\u767c\u4ee5\u964d\u4f4e\u932b\u818f\u7684\u710a\u932b\u6027\uff0c\u4f46\u5de5\u4f5c\u718a\u771f\u7684\u4e0d\u5efa\u8b70\u70d8\u70e4\u932b\u818f\uff0c\u56e0\u70ba\u7121\u6cd5\u6e96\u78ba\u63a7\u5236\u52a9\u710a\u5291\u7684\u6b98\u9918\u91cf\uff0c\u53cd\u800c\u6703\u9020\u6210\u5176\u4ed6\u96f6\u4ef6\u7684\u7a7a\u710a\u554f\u984c\u7522\u751f)
4.\u6aa2\u67e5\u96f6\u4ef6\u8173\u662f\u5426\u6c27\u5316\u3002
5.\u8b8a\u66f4\u8a2d\u8a08\u70ba\u586b\u5b54\u4f5c\u696d\u6216\u932b\u818f\u5370\u5237\u6642\u907f\u958b\u5b54\u6d1e\u3002
6.\u6aa2\u67e5\u96fb\u8def\u677f\u710a\u588a\u662f\u5426\u6c27\u5316\u3002<\/p>\n<\/td>\n<\/tr>\n

\u7121\u8173SMD\u96f6\u4ef6\u7a7a\u710a<\/a>
<\/td>\n		1.\u710a\u588a\u8a2d\u8a08\u4e0d\u7576
2.\u710a\u588a\u5169\u7aef\u53d7\u71b1\u4e0d\u5747
3.\u932b\u818f\u91cf\u592a\u5c11
4.\u96f6\u4ef6\u5403\u932b\u4e0d\u4f73<\/td>\n		\n

1.\u6aa2\u67e5\u96fb\u8def\u677f\u9023\u63a5\u5927\u9762\u7a4d\u9285\u7b94\u7684\u96f6\u4ef6\u8173\u662f\u5426\u6563\u71b1\u592a\u5feb\u81f4\u6607\u6eab\u901f\u5ea6\u8ddf\u4e0d\u4e0a\u5176\u4ed6\u710a\u8173\uff0c\u8003\u616e\u589e\u52a0\u71b1\u963b(thermal relief)<\/a> \u3002\u5982\u679c\u6709\u76f8\u540c\u8a0a\u865f\u7684\u710a\u588a\u4e00\u5b9a\u8981\u4ee5\u9632\u710a\u819c\u5206\u9694\u958b\u6216\u8a2d\u8a08\u7368\u7acb\u710a\u588a\uff0c\u5c3a\u5bf8\u8981\u9069\u5207\u3002
<\/span>2.\u6e1b\u7de9\u6eab\u5ea6\u66f2\u7dda\u5347\u6eab\u901f\u7387\u6216\u540c\u96f6\u4ef6\u7684\u710a\u588a\u5c3a\u5bf8\u9700\u4e00\u81f4\u3002
<\/span>3.\u589e\u52a0\u932b\u818f\u91cf
<\/span>4.\u96f6\u4ef6\u5fc5\u9700\u7b26\u5408\u5403\u932b\u4e4b\u9700\u6c42<\/span><\/span><\/p>\n<\/td>\n<\/tr>\n

\u7acb\u7891\/\u5893\u7891<\/a>
<\/td>\n		\n

1.\u710a\u588a\u5169\u7aef\u6607\u6eab\u901f\u5ea6\u4e0d\u4e00\u81f4\u3001\u710a\u588a\u8a2d\u8a08\u4e0d\u7576
2.\u710a\u588a\u5169\u7aef\u5403\u932b\u6027\u4e0d\u540c
3.\u710a\u588a\u5169\u7aef\u53d7\u71b1\u4e0d\u5747
4.Reflow\u6eab\u5ea6\u52a0\u71b1\u904e\u5feb<\/p>\n<\/td>\n

\n

1.\u589e\u52a0\u71b1\u963b(thermal relief)<\/a>\u6216\u710a\u588a\u8a2d\u8a08\u6700\u4f73\u5316\u3002
<\/span>2.\u8f03\u4f73\u7684\u96f6\u4ef6\u5403\u932b\u6027
<\/span>3.\u6e1b\u7de9\u6eab\u5ea6\u66f2\u7dda\u5347\u6eab\u901f\u7387
<\/span>4.\u5728\u56de\u6d41\u710a\u524d\u5148\u9810\u71b1\u5230170\u2103\u3002<\/span><\/span><\/p>\n<\/td>\n<\/tr>\n

\u51b7\u710a
<\/td>\n		\n

1.\u56de\u6d41\u710a\u6eab\u5ea6\u592a\u4f4e
<\/span>2.\u56de\u6d41\u710a\u6642\u9593\u592a\u77ed
<\/span>3.Pin\u8173\u5403\u932b\u6027\u554f\u984c
<\/span>4.Pad\u5403\u932b\u6027\u554f\u984c<\/span><\/span><\/p>\n<\/td>\n

\n

1.\u8abf\u9ad8\u56de\u6d41peak\u710a\u6eab\u5ea6\u81f3245\u2103\uff5e255\u2103\u3002
<\/span>2.\u5ef6\u9577\u56de\u6d41\u710a\u6642\u9593\uff08\uff1e220\u2103\u4ee5\u4e0a\u81f3\u5c1140\uff5e60\u79d2\uff09<\/span>\u3002
<\/span>3.\u67e5\u9a57Pin\u8173\u5403\u932b\u6027\u3002
<\/span>4.\u67e5\u9a57Pad\u5403\u932b\u6027\u3002<\/span><\/span><\/p>\n<\/td>\n<\/tr>\n

\u7c92\u710a\uff08\u672a\u5b8c\u5168\u7194\u932b\uff09<\/td>\n1.\u56de\u6d41\u710a\u6eab\u5ea6\u904e\u4f4e
<\/span>2.\u56de\u6d41\u710a\u6642\u9593\u904e\u77ed
<\/span>3.\u932b\u818f\u6c61\u67d3\u6216\u6c27\u5316<\/span>
<\/span><\/td>\n		\n

1.\u8abf\u9ad8\u56de\u6d41peak\u710a\u6eab\u5ea6\u81f3245\u2103\uff5e255\u2103<\/a>\u3002
<\/span>2.\u5ef6\u9577\u56de\u6d41\u710a\u6642\u9593<\/a>\uff08\uff1e220\u2103\u4ee5\u4e0a\u81f3\u5c1140\uff5e60\u79d2\uff09\u3002
<\/span>3.\u932b\u818f\u5fc5\u9808\u4fdd\u6301<\/span><\/span>\u65b0\u9bae\uff0c\u958b\u7f50\u5f8c\u5fc5\u9808\u5728\u898f\u5b9a\u6642\u9593\u5167\u7528\u5b8c\u3002<\/p>\n<\/td>\n<\/tr>\n

\u710a\u9ede\u9f9c\u88c2
\"\u710a\u9ede\u9f9c\u88c2\u76ba\u647a\"<\/td>\n		\n

1.\u932b\u818f\u878d\u5316\u6eab\u5ea6\u592a\u4f4e
2.\u71b1\u885d\u64ca(Thermal Shock)\u3001\u51b7\u537b\u901f\u5ea6\u904e\u5feb
<\/span>3.PCB\u677f\u7ff9\u7522\u751f\u61c9\u529b,\u96f6\u4ef6\u7f6e\u653e\u7522\u751f\u7684\u61c9\u529b
<\/span>4.PCB Lay-out\u8a2d\u8a08\u4e0d\u7576 5<\/span>.\u932b\u818f\u91cf<\/span><\/span><\/span><\/span><\/p>\n<\/td>\n

\n

1.\u5efa\u8b70\u8abf\u9ad8\u56de\u710a\u7684\u7684Peak\u6eab\u5ea6\u3002SAC305\u8abf\u9ad8\u81f3245~255\u2103\uff1bPd63Sn37\u8abf\u9ad8\u81f3215~225\u2103\u3002
2.\u964d\u4f4e\u51b7\u537b\u901f\u5ea6\u3002
<\/span>3.\u907f\u514dPCB\u5f4e\u6298\uff0c\u654f\u611f\u96f6\u4ef6\u7684\u65b9\u5411\u6027\uff0c\u964d\u4f4e\u7f6e\u653e\u58d3\u529b\u3002
<\/span>4.\u500b\u5225\u7684\u710a\u588a\uff0c\u96f6\u4ef6\u9577\u8ef8\u8207\u6298\u677f\u65b9\u5411\u5e73\u884c\u3002
<\/span>5.\u589e\u52a0\u932b\u818f\u91cf\uff0c\u9069\u7576\u7684\u932b\u588a\u3002<\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

\n

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\"\u5438\u932b\u5e36\"<\/font><\/p>\n

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\n

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\u4f55\u8b02IMC (Intermetallic Compound)\uff1fIMC\u8207PCB\u710a\u63a5\u5f37\u5ea6\u6709\u4f55\u95dc\u4fc2\uff1f<\/font><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

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