{"id":7003,"date":"2018-08-01T08:21:00","date_gmt":"2018-08-01T00:21:00","guid":{"rendered":"\/\/m.letratesoro.com\/?p=7003"},"modified":"2018-08-04T10:34:41","modified_gmt":"2018-08-04T02:34:41","slug":"printer-fail-analysis","status":"publish","type":"post","link":"\/\/m.letratesoro.com\/2018\/08\/printer-fail-analysis\/","title":{"rendered":"[\u6848\u4f8b]\u65b0\u7522\u54c1\u4e0d\u826f\u5206\u6790\u7814\u767c\u600e\u9ebc\u53ef\u4ee5\u6253\u8ff7\u7cca\u4ed7\uff1f\u7522\u54c1\u5370\u5b57\u4e0d\u826f\u5206\u6790"},"content":{"rendered":"![\"Printer_out_of_paper\"](\"\/\/m.letratesoro.com\/wp-content\/uploads\/Printer_out_of_paper.jpg\" "\\"Printer_out_of_paper\\"")
\u9019\u5e7e\u5929\u570b\u5916\u7814\u767c(RD)\u55ae\u4f4d\u5bc4\u4e86\u4e00\u53f0\u5217\u5370\u4e0d\u826f\u7684\u8a66\u7522\u54c1\u7d66\u5de5\u4f5c\u718a\u5206\u6790\uff0c\u56e0\u70ba\u4ed6\u5011\u7684\u5de5\u7a0b\u5e2b\u53ca\u6280\u8853\u4eba\u54e1\u6aa2\u67e5\u4e86\u96fb\u8def\u677f\u4e0a\u7684\u76f8\u95dc\u7dda\u8def\u53ca\u96f6\u4ef6\uff0c\u4e26\u66f4\u63db\u4e86\u4e00\u9846\u65b0\u7684\u6253\u5370\u982d(Printer head)\uff0c\u6700\u7d42\u4ecd\u7136\u627e\u4e0d\u5230\u4e0d\u826f\u539f\u56e0\u51fa\u5728\u54ea\u88e1\uff0c\u7136\u5f8c\u5c31\u628a\u77db\u982d\u6307\u5411\u4e86\u4e00\u9846QFN\u5c01\u88dd\u7684EMI\u6ffe\u6ce2\u5668\uff0c\u4ed6\u5011\u5f37\u70c8\u4e14\u9ad8\u5ea6\u61f7\u7591\u9019\u9846QFN\u7684\u5403\u932b\u53ef\u80fd\u6709\u554f\u984c\uff0c\u56e0\u70ba\u4ed6\u5011\u5728\u986f\u5fae\u93e1\u4e0b\u89c0\u5bdf\u5230\u9019\u9846QFN\u7684\u5074\u9762\u5403\u932b\u72c0\u6cc1\u4e0d\u4f73\uff0c\u56e0\u70ba\u5074\u9762\u6c92\u6709\u5403\u932b\uff0c\u56e0\u6b64\u8a8d\u70ba\u5176\u53ef\u80fd\u6709de-wetting\uff08\u7e2e\u932b\uff09\u6216non-wetting\uff08\u5047\u3001\u51b7\u710a\u3001\u4e0d\u5403\u932b\uff09<\/a>\u7684\u4e0d\u826f\uff0c\u5e0c\u671b\u5de5\u4f5c\u718a\u53ef\u4ee5\u628a\u7522\u54c1\u9001\u56de\u7d66SMT\u5de5\u5ee0\u5206\u6790\u5176\u710a\u932b\u54c1\u8cea\u3002<\/font><\/p>\n
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\u7b2c\u4e8c\u500b\u767c\u73fe<\/font><\/strong>\uff1a\u95dc\u65bcQFN\u7684\u5403\u932b\u54c1\u8cea\u8a72\u5982\u4f55\u5224\u65b7\u5176\u597d\u58de\uff1f\u771f\u7684\u53ef\u4ee5\u50c5\u5f9eQFN\u7684\u5074\u9762\u722c\u932b\u72c0\u6cc1\u4f86\u5224\u65b7\u5176\u5403\u932b\u54c1\u8cea\uff1f<\/font><\/p>\n
QFN (Quad Flat No leads\uff0c\u56db\u65b9\u5e73\u9762\u7121\u5f15\u8173\u5c01\u88dd) \u70ba\u7121\u5f15\u8173IC\u5c01\u88dd\u8a2d\u8a08\uff0c\u7531\u65bcIC\u5c01\u88dd\u7684\u5148\u5f8c\u88fd\u7a0b\u95dc\u4fc2\uff0c\u5927\u90e8\u5206\u90fd\u662f\u5148\u96fb\u934d\u5f8c\u624d\u88c1\u5207\u5176\u5f15\u8173\uff0c\u6240\u4ee5\u6703\u9020\u6210QFN\u5074\u9762\u7684\u7121\u5f15\u8173\u5207\u65b7\u9762\u6c92\u6709\u88ab\u96fb\u934d\u5230\u800c\u76f4\u63a5\u9732\u9285\uff0c\u5982\u679c\u88fd\u7a0b\u662f\u5148\u5207\u65b7\u518d\u96fb\u934d\u5c31\u6c92\u6709\u9019\u500b\u554f\u984c\uff0c\u4f46\u5be6\u969b\u4e0a\u5982\u6b64\u64cd\u4f5c\u78ba\u6709\u56f0\u96e3\uff0c\u56e0\u70ba\u96fb\u934d\u6642\u96f6\u4ef6\u8173\u9700\u8981\u9023\u63a5\u5230\u6b63\u3001\u8ca0\u5169\u6975\uff0c\u5c0d\u90a3\u4e9b\u5df2\u7d93\u5148\u5207\u65b7\u5f15\u8173\u7684IC\uff0c\u60f3\u8981\u518d\u540c\u6642\u5c07\u6240\u6709IC\u7684\u5207\u65b7\u9762\u9023\u63a5\u5230\u6b63\u8ca0\u6975\u771f\u7684\u662f\u4e00\u9805\u5927\u6311\u6230\uff0c\u4e0d\u7136\u5c31\u8981\u63a1\u7528\u5316\u5b78\u6c88\u7a4d\u6cd5\uff0c\u9ebb\u7169\u554a\uff01<\/font><\/p>\n
\u7e3d\u4e4b\uff0c\u5e02\u9762\u4e0a\u7d55\u5927\u90e8\u5206QFN\u7522\u54c1\u7684\u5074\u9762\u710a\u9ede\u90fd\u662f\u9732\u9285<\/font><\/strong>\u7684<\/font>\uff0c\u9285\u9762\u57fa\u672c\u4e0a\u53ea\u8981\u66b4\u9732\u5728\u5927\u6c23\u74b0\u5883\u4e0b\u5f88\u5feb\u5c31\u6703\u767c\u751f\u6c27\u5316\uff0c\u4e26\u9020\u6210\u62d2\u710a\u7684\u554f\u984c\uff0c\u65e2\u4f7f\u6709\u6eab\u6fd5\u5ea6\u7ba1\u63a7\u7684\u74b0\u5883\u4e5f\u6703\u6c27\u5316\uff0c\u53ea\u662f\u6c27\u5316\u901f\u5ea6\u8f03\u6162\u3002\u6240\u4ee5\u3010IPC-A-610D \u898f\u7bc4\u3011\u4e2d\u5c0dQFN\u5074\u908a\u710a\u9ede\u5403\u932b\u7684\u5141\u6536\u6a19\u6e96\u5176\u5be6\u898f\u5b9a\u5f97\u76f8\u7576\u5bec\u9b06\u3002\u57fa\u672c\u4e0a\u6c92\u6709\u8981\u6c42\u4e00\u5b9a\u8981\u5f62\u6210\u5403\u932b\u5f27\u5ea6(Fillet)\uff0c\u800c\u300cQFN\u722c\u932b\u9ad8\u5ea6\u300d\u5247\u662f\u7559\u7d66\u8a2d\u8a08\u81ea\u5df1\u6c7a\u5b9a\u3002<\/font><\/p>\n
![\"IPC-A-610D_QFN\u5403\u932b\u6a19\u6e96\"](\"\/\/m.letratesoro.com\/wp-content\/uploads\/IPC-A-610D_QFN%E5%90%83%E9%8C%AB%E6%A8%99%E6%BA%96.png\" "\\"IPC-A-610D_QFN\u5403\u932b\u6a19\u6e96\\"")
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