{"id":185,"date":"2010-08-02T10:48:01","date_gmt":"2010-08-02T02:48:01","guid":{"rendered":"\/\/m.letratesoro.com\/2010\/08\/shielding-frame\/"},"modified":"2024-03-08T11:43:52","modified_gmt":"2024-03-08T03:43:52","slug":"shielding-frame","status":"publish","type":"post","link":"\/\/m.letratesoro.com\/2010\/08\/shielding-frame\/","title":{"rendered":"\u5c4f\u853d\u6846(Shielding frame)\u5728PCBA\u7684\u8a2d\u8a08\u8207\u751f\u7522\u6ce8\u610f\u4e8b\u9805"},"content":{"rendered":"

\"ShieldingFrame01\" <\/p>\n

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\u7d93\u904e\u4e86\u4e00\u6bb5\u6642\u9593\u7684\u6478\u7d22\u8207\u6301\u7e8c\u6027\u7684\u8a2d\u8a08\u8b8a\u66f4\u8207\u6539\u5584\u5f8c\uff0c\u624d\u6f38\u6f38\u627e\u5230\u8981\u5982\u4f55\u8a2d\u8a08\u3001\u88fd\u4f5c\u3001\u53ca\u5305\u88dd\u5c4f\u853d\u6846\/\u7f69\uff0c\u4f7f\u5176\u4e0d\u518d\u6709\u5e73\u6574\u5ea6(coplanarity)\u904e\u5927\u7684\u554f\u984c\uff0c\u4e5f\u53ef\u4ee5\u9806\u5229\u4f7f\u7528SMT\u7684\u5438\u5634(nozzle)\u4f86\u6253\u4ef6\u8cbc\u7247\u3002<\/font><\/p>\n

<\/p>\n

\u5fd8\u4e86\u8aaa\u660e\u9019\u300c\u5c4f\u853d\u6846\u300d\u7684\u4f5c\u7528\u662f\u70ba\u4e86\u8981\u5c4f\u853d\u96fb\u78c1\u5e72\u64fe(EMI)\uff0c\u5b83\u7684\u76ee\u7684\u6709\u4e8c\uff1a\u4e00\u662f\u70ba\u4e86\u9632\u6b62\u5916\u4f86\u7684\u96dc\u8a0a\u5e72\u64fe\uff0c\u4e00\u822c\u7528\u5728\u7121\u7dda\u901a\u8a0a\u7684\u5370\u5237\u96fb\u8def\u677f\u4e0a\uff0c\u5c24\u5176\u662f\u5927\u54e5\u5927\u624b\u6a5f\u7684\u8a0a\u865f\uff1b\u4e8c\u662f\u70ba\u4e86\u907f\u514d\u672c\u8eab\u6240\u7522\u751f\u7684\u96fb\u78c1\u5e72\u64fe\u5f71\u97ff\u5230\u5225\u7684\u96fb\u5b50\u8a2d\u5099(EMC)\u6216\u9020\u6210\u4eba\u9ad4\u8ca0\u64d4\u3002<\/font><\/p>\n

\"ShieldingFrameDeformation02\" \"ShieldingFrameDeformation01\"<\/p>\n

\n

\u5c4f\u853d\u6846\u7684\u6750\u8cea\u9078\u7528<\/span><\/font><\/strong><\/p>\n<\/h4>\n

\n

\u4e00\u958b\u59cb\u6211\u5011\u9078\u7528\u7684\u5c4f\u853d\u6846\u6750\u8cea\u70ba SPTE 0.3mm \u7684\u300c\u99ac\u53e3\u9435<\/a>\u300d\uff0c\u4e5f\u5c31\u662f\u4fd7\u7a31\u7684\u300c\u6d0b\u767d\u9435<\/a>\u300d\uff0c\u5c31\u662f\u90a3\u7a2e\u5169\u9762\u90fd\u6709\u934d\u932b<\/font><\/strong>\u7684\u92fc\u677f\uff0c\u4e00\u822c\u5e38\u7528\u5728\u7f50\u982d\u4e0a\u9762\uff0c\u53ef\u662f\u9019\u7a2e\u6750\u8cea\u7a0d\u5fae\u504f\u786c\uff0c\u5ee0\u5546\u8aaa\u4ed6\u5011\u7684\u88fd\u7a0b\u80fd\u529b\u5f88\u96e3\u9054\u52300.1mm\u7684\u5e73\u6574\u5ea6(coplanarity)\u8981\u6c42\uff0c\u56e0\u70ba\u6211\u5011\u5bb6SMT\u7684\u92fc\u677f(stencil)\u539a\u5ea6\u5927\u591a\u958b\u57280.10mm\u53ca0.127mm\uff0c\u751a\u81f3\u6709\u958b\u57280.8mm\u7684\uff0c\u6240\u4ee5\u5e0c\u671b\u5c4f\u853d\u6846\u7684\u5e73\u6574\u5ea6\u53ef\u4ee5\u7dad\u6301\u57280.1mm\u4ee5\u5167\uff0c\u7576\u7136SMT\u88fd\u7a0b\u4e0a\u6211\u5011\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5c40\u90e8\u52a0\u539a\u92fc\u677f<\/a>\u4f86\u589e\u52a0\u932b\u91cf\uff0c\u4f46\u9084\u662f\u5e0c\u671b\u5c4f\u853d\u6846\u672c\u8eab\u7684\u80fd\u529b\u53ef\u4ee5\u63d0\u6607\uff0c\u9019\u6a23\u624d\u80fd\u9054\u5230\u751f\u7522\u826f\u7387\u63d0\u6607\u3002<\/font><\/p>\n

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\u56e0\u70ba\u9285\u6bd4\u9435\u4f86\u5f97\u8edf\uff0c\u57fa\u672c\u4e0a C7521R \u6bd4 SPTE \u66f4\u5bb9\u6613\u88ab\u4e8c\u6b21\u52a0\u5de5\u6574\u5e73\uff0c\u6240\u4ee5\u5ee0\u5546\u6975\u529b\u63a8\u85a6\u9019\u7a2e\u6750\u8cea\uff0c\u66f4\u91cd\u8981\u7684\u662f\u9019\u7a2e\u6750\u8cea\u4e5f\u53ef\u4ee5\u5403\u932b\uff0c\u53ea\u662f\u50f9\u9322\u7a0d\u5fae\u8cb4\u4e86\u4e00\u9ede\u3002<\/font><\/p>\n

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