{"id":5401,"date":"2021-10-28T10:47:37","date_gmt":"2021-10-28T02:47:37","guid":{"rendered":"http:\/\/www.szryc.com\/?p=5401"},"modified":"2021-10-28T10:47:37","modified_gmt":"2021-10-28T02:47:37","slug":"pcba%e4%b8%8a%e7%9a%84cpu%e4%b8%8eflas%e5%99%a8%e4%bb%b6%e7%84%8a%e6%8e%a5%e8%b4%a8%e9%87%8f%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=5401","title":{"rendered":"PCBA\u4e0a\u7684CPU\u4e0eFlas\u5668\u4ef6\u710a\u63a5\u8d28\u91cf\u5206\u6790"},"content":{"rendered":"
\u4e00 \u00a0\u6837\u54c1\u63cf\u8ff0<\/p>\n
\u6240\u9001\u6837\u54c1\u5305\u62ec\u4e09\u7247PCBA<\/u>\uff08\u624b\u673a\u4e3b\u677f\uff09\u3001\u56db\u7247\u76f8\u5e94\u7684\u7a7a\u767dPCB<\/u>\u4ee5\u53ca\u5de5\u827a\u8fc7\u7a0b\u4e2d\u4f7f\u7528\u7684CPU<\/u>\u5668\u4ef6\u548c\u710a\u9521\u818f\uff0cPCBA\uff08\u624b\u673a\u4e3b\u677f\uff09\u7684\u578b\u53f7\u4e3aC389,\u6837\u54c1\u7684\u5916\u89c2\u7167\u7247\u89c1\u56fe1\u6240\u793a\uff0c\u59d4\u6258\u5355\u4f4d\u8981\u6c42\u5bf9 PCBA \u4e0a\u7684 CPU \u4e0e \u00a0Flash \u5668\u4ef6\u710a\u63a5<\/u>\u8d28\u91cf\u8fdb\u884c\u5206\u6790\u3002<\/p>\n <\/p>\n \u56fe \u00a01 \u00a0BGA<\/u>\u710a\u63a5\u6837\u54c1\u7684\u5916\u89c2\u7167\u7247<\/p>\n \u4e8c \u00a0\u5206\u6790\u8fc7\u7a0b<\/p>\n 2.1 \u5916\u89c2\u68c0\u67e5<\/p>\n \u7528\u7acb\u4f53\u663e\u5fae\u955c\u5bf9\u7a7a\u767dPCB \u548cBGA \u5668\u4ef6\u8fdb\u884c\u5916\u89c2\u68c0\u6d4b\uff0c\u53d1\u73b0 BGA \u5668\u4ef6\u7684\u710a\u7403\u5927\u5c0f\u5747\u5300\u4e00\u81f4\uff0c\u5171\u9762\u6027\u826f\u597d\uff08\u89c1\u56fe2 \u548c\u56fe3\uff09\uff1b\u7a7a\u767dPCB\u710a\u76d8\u8868\u9762\u5b58\u5728\u4e00\u4e9b\u5751\u6d3c\u70b9\uff08\u89c1\u56fe4\u548c\u56fe5\uff09\uff0c \u9664\u6b64\u4e4b\u5916\u672a\u89c2\u5bdf\u5230\u660e\u663e\u7684\u5f02\u5e38\u3002<\/p>\n <\/p>\n <\/p>\n \u56fe2 CPU\u5668\u4ef6\u4e2dBGA \u710a\u7403\u7684\u5916\u89c2\u7167\u7247\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u56fe3 CPU\u5668\u4ef6\u4e2dBGA \u710a\u7403\u7684\u5c40\u90e8\u5916\u89c2\u7167\u7247<\/p>\n <\/p>\n <\/p>\n \u56fe4\u00a0PCB\u677f<\/u>\u4e2dCPU\u710a\u76d8\u7684\u5916\u89c2\u7167\u7247 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u56fe5 PCB\u677f\u4e2dFlash\u7684\u5916\u89c2\u7167\u7247 <\/p>\n <\/p>\n <\/p>\n \u56fe6 CPU \u710a\u70b9\u7684X\uff0dray\u5178\u578b\u7167\u7247\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u56fe7 Flash \u710a\u70b9\u7684X\uff0dray \u5178\u578b\u7167\u7247<\/p>\n <\/p>\n <\/p>\n <\/p>\n \u56fe8 \u00a0\u503e\u659c\u540e\u89c2\u5bdf\u5230\u7684CPU \u710a\u70b9\u7684X\uff0dray\u7167\u7247\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u56fe9 \u00a0\u503e\u659c\u540e\u89c2\u5bdf\u5230\u7684 Flash\u710a\u70b9\u7684X-ray\u7167\u7247<\/p>\n <\/p>\n <\/p>\n <\/p>\n \u56fe10 \u00a0\u90e8\u5206CPU\u710a\u70b9\u7684\u653e\u5927\u7167\u7247\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u56fe11 \u00a0\u90e8\u5206Flash\u710a\u70b9\u7684\u653e\u5927\u7167\u7247<\/p>\n 2.3 \u91d1\u76f8\u5207\u7247\u5206\u6790<\/p>\n \u5728\u6837\u54c1\u4e0a\u622a\u53d6\u5931\u6548\u7684 \u00a0BGA \u00a0\u5668\u4ef6\uff0c\u7528\u73af\u6c27\u6811\u8102<\/u>\u9576\u5d4c\u540e\u6253\u78e8\u629b\u5149\uff0c\u7528\u91d1\u76f8\u663e\u5fae\u955c\u89c2\u5bdfBGA \u5668\u4ef6\u710a\u70b9\u7684\u91d1\u76f8\u5207\u7247\uff0c\u710a\u70b9\u7684\u91d1\u76f8\u7167\u7247\u89c1\u56fe \u00a012\uff5e\u56fe \u00a025\u3002\u5176\u4e2d \u00a0CPU \u710a\u70b9\u7684\u5178\u578b \u00a0\u91d1\u76f8\u7167\u7247\u89c1\u56fe \u00a012\uff5e\u56fe \u00a019\uff0c\u7531\u56fe\u53ef\u4ee5\u53d1\u73b0\u90e8\u5206\u710a\u7403\u710a\u6599\u4e0e \u00a0PCB \u710a\u76d8\u4e4b\u95f4\u6da6\u6e7f\u4e0d\u826f\uff0c\u672a\u89c2\u5bdf\u5230\u826f\u597d\u7684\u91d1\u5c5e\u95f4\u5316\u5408\u7269\u5c42\uff0c\u4e2a\u522b\u710a\u70b9\u751a\u81f3\u53d1\u73b0\u5b58\u5728\u5f00\u88c2\u73b0\u8c61\uff1b\u540c\u65f6\u8fd8\u89c2\u5bdf\u5230\u710a \u7403\u710a\u6599\u7194\u878d\u4e0d\u5b8c\u5168\uff0c\u5b58\u5728\u7a7a\u6d1e\u7b49\u7f3a\u9677\u3002<\/p>\n <\/p>\n <\/p>\n \u56fe12 CPU\u5668\u4ef6\u90e8\u5206\u710a\u70b9\u7684\u91d1\u76f8\u7167\u7247\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u56fe13 \u00a0CPU\u5668\u4ef6\u6b63\u5e38\u710a\u70b9\u7684\u5178\u578b\u91d1\u76f8\u7167\u7247<\/p>\n <\/p>\n <\/p>\n \u56fe14 \u00a0\u710a\u6599\u4e0e\u710a\u76d8\u6da6\u6e7f\u4e0d\u826f\u7684\u5178\u578b\u7167\u7247\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u56fe15 \u00a0\u710a\u70b9\u5c40\u90e8\u653e\u5927\u7167\u7247\uff08\u89c1\u56fe 14 \u7ea2\u6846\uff09<\/p>\n <\/p>\n <\/p>\n \u56fe16 \u51fa\u73b0\u7a7a\u6d1e\u710a\u70b9\u7684\u5178\u578b\u7167\u7247\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u56fe17 \u00a0\u710a\u7403\u710a\u6599\u8d28\u91cf\u4e0d\u826f\u7684\u5178\u578b\u7167\u7247<\/p>\n <\/p>\n <\/p>\n \u56fe18 \u00a0\u710a\u7403\u4e0ePCB \u710a\u76d8\u51fa\u73b0\u88c2\u7f1d\u7684\u5178\u578b\u7167\u7247 \u00a01\u00a0 \u00a0 \u00a0 \u00a0 \u56fe19 \u00a0\u710a\u70b9\u5c40\u90e8\u653e\u5927\u7167\u7247\uff08\u89c1\u56fe18 \u7ea2\u6846\uff09<\/p>\n <\/p>\n <\/p>\n \u56fe20 \u00a0\u710a\u7403\u4e0ePCB \u710a\u76d8\u51fa\u73b0\u88c2\u7f1d\u7684\u5178\u578b\u7167\u7247 \u00a02\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u56fe21 \u00a0\u710a\u70b9\u5c40\u90e8\u653e\u5927\u7167\u7247\uff08\u89c1\u56fe20 \u7ea2\u6846\uff09 <\/p>\n <\/p>\n \u56fe22 Flash\u710a\u70b9\u7684\u5178\u578b\u91d1\u76f8\u7167\u7247\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u56fe23 \u6b63\u5e38\u710a\u70b9\u7684\u5178\u578b\u91d1\u76f8\u7167\u7247<\/p>\n <\/p>\n <\/p>\n \u56fe24 \u51fa\u73b0\u7a7a\u6d1e\u710a\u70b9\u7684\u5178\u578b\u7167\u7247\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u56fe25 \u00a0\u710a\u7403\u710a\u6599\u4e0e\u710a\u76d8\u6da6\u6e7f\u6027\u4e0d\u826f\u7684\u5178\u578b\u7167\u7247<\/p>\n <\/p>\n <\/p>\n \u56fe26 \u00a0\u710a\u6599\u7194\u878d\u4e0d\u5b8c\u5168\u7684\u5178\u578b\u7167\u7247\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u56fe27 \u00a0\u710a\u70b9\u5c40\u90e8\u653e\u5927\u7167\u7247\uff08\u89c1\u56fe24 \u7ea2\u6846\uff09 \uff081\uff09PCB\u710a\u76d8\u6c27\u5316<\/u>\u4e25\u91cd\u6216\u6cbe\u6c61\u5916\u6765\u6c61\u67d3\u7269\u5bfc\u81f4\u710a\u76d8\u7684\u53ef\u710a\u6027\u4e0d\u826f\u3002<\/p>\n \uff082\uff09 \u4f7f\u7528\u7684\u710a\u9521\u818f\u6da6\u6e7f\u6027\u4e0d\u826f\u3002<\/p>\n \uff083\uff09BGA \u710a\u9521\u7403\u53ef\u710a\u6027\u4e0d\u826f\u3002 \u4e3a\u4e86\u5206\u6790BGA \u710a\u7403\u7684\u8d28\u91cf\uff0c\u5bf9\u672a\u4f7f\u7528\u7684CPU\u710a\u7403\u548c\u4ece\u6240\u9001\u624b\u673a\u4e3b\u677f\u4e0a\u8131\u843d\u7684CPU\u710a\u7403\u8fdb\u884c\u91d1\u76f8\u5207\u7247\u5206\u6790\uff0c\u53d1\u73b0\u65e0\u8bba\u662f\u672a\u4f7f\u7528\u7684CPU \u710a\u7403\u8fd8\u662f\u8131\u843d\u7684CPU \u710a\u7403\u710a\u6599\u7194 \u878d\u5747\u4e0d\u591f\u826f\u597d\uff0c\u710a\u7403\u5185\u90e8\u53d1\u73b0\u5b58\u5728\u88c2\u7f1d\u7b49\u7f3a\u9677\uff0c\u8fd9\u8bf4\u660e BGA \u710a\u7403\u8d28\u91cf\u4e0d\u591f\u826f<\/p>\n <\/p>\n <\/p>\n \u56fe26 \u8131\u843d\u710a\u7403\u7684\u5178\u578b\u7167\u7247 \u00a0 1\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u56fe27 \u8131\u843d\u710a\u7403\u7684\u5178\u578b\u7167\u7247 \u00a02<\/p>\n <\/p>\n <\/p>\n \u56fe28 \u00a0\u8131\u843d\u710a\u7403\u7684\u5c40\u90e8\u653e\u5927\u7167\u7247\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u56fe29 \u00a0\u8131\u843d\u710a\u7403\u5185\u90e8\u51fa\u73b0\u88c2\u7f1d\u7684\u5178\u578b\u7167\u7247<\/p>\n <\/p>\n <\/p>\n \u56fe28 \u672a\u4f7f\u7528\u7684CPU \u710a\u7403\u7684\u5178\u578b\u7167\u7247 \u00a01\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u56fe29 \u00a0\u672a\u4f7f\u7528\u7684CPU \u710a\u7403\u7684\u5178\u578b\u7167\u7247 \u00a02<\/p>\n <\/p>\n <\/p>\n \u56fe30 \u672a\u4f7f\u7528\u7684CPU\u710a\u7403\u7684\u5178\u578b\u7167\u7247 \u00a01\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u56fe31 \u00a0\u672a\u4f7f\u7528\u7684CPU\u710a\u7403\u7684\u5178\u578b\u7167\u7247 \u00a02 \u6309\u7167 IPC-TM-650.2.4.45 \u7684\u8981\u6c42\u5bf9\u5de5\u827a\u8fc7\u7a0b\u4e2d\u4f7f\u7528\u7684\u710a\u9521\u818f\u7684\u6da6\u6e7f\u6027\u8fdb\u884c\u6d4b\u8bd5\uff0c\u53d1\u73b0\u6240\u4f7f\u7528\u7684\u710a\u9521\u818f\u7684\u6da6\u6e7f\u6027\u826f\u597d\uff08\u710a\u9521\u818f\u7684\u53ef\u710a\u6027\u8bd5\u9a8c\u7167\u7247\u89c1\u56fe 26 \u548c\u56fe 27\uff09<\/p>\n <\/p>\n <\/p>\n \u56fe26 \u00a0\u710a\u9521\u818f\u6da6\u6e7f\u6027\u8bd5\u9a8c\u7684\u5178\u578b\u7167\u7247 \u00a01\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u56fe27 \u00a0\u710a\u9521\u818f\u6da6\u6e7f\u6027\u8bd5\u9a8c\u7684\u5178\u578b\u7167\u7247 \u00a02 \u6309\u7167IPC-STD-003\uff08Solderability\u00a0Te<\/u>sts for Printed Boards\uff09\u8981\u6c42\uff0c\u5bf9\u59d4\u6258\u5355\u4f4d\u6240\u9001\u7684\u7a7a\u767dPCB\u7684\u53ef\u710a\u6027\u8fdb\u884c\u6d4b\u8bd5\uff0c\u8bd5\u9a8c\u6e29\u5ea6\u4e3a235\uff0c\u8bd5\u9a8c\u65f6\u95f4\u4e3a3S\uff0c\u6240\u4f7f\u7528\u7684\u52a9\u710a\u5242\u4e3a\u4e2d\u6027\u52a9\u710a\u5242\uff08\u710a\u9521\u818f\u7684\u53ef\u710a\u6027\u8bd5\u9a8c\u7167\u7247\u89c1\u56fe28\u548c\u56fe29\uff09\uff0c\u53d1\u73b0\u7a7a\u767dPCB\u7684\u90e8\u5206\u710a\u76d8\u7684\u53ef\u710a\u6027\u8f83\u5dee\uff08\u89c1\u56fe\u4e2d\u7ea2\u8272\u7bad\u5934\u6240\u6307\u7684\u9ec4\u8272\u710a\u76d8\uff09\uff0c\u710a\u6599\u5bf9\u710a\u76d8\u7684\u6da6\u6e7f\u4e0d\u826f\u6216\u5f31\u6da6\u6e7f\uff0c\u8fd9\u8bf4\u660eBGA \u91d1\u76f8\u5207\u7247\u4e2d\u53d1\u73b0\u7684\u710a\u7403\u4e0e\u710a\u76d8\u6da6\u6e7f\u4e0d\u826f\u4e0ePCB\u90e8\u5206\u710a\u76d8\u7684\u53ef\u710a\u6027\u4e0d\u826f\u6709\u5173\u3002\u800c\u5f15\u8d77\u710a\u76d8\u53ef\u710a\u6027\u4e0d\u826f\u7684\u539f\u56e0\u53ef\u80fd\u662f\u710a\u76d8\u6c27\u5316\u4e25\u91cd\u6216\u8868\u9762\u6cbe\u6c61\u6709\u673a\u7269\u3002<\/p>\n <\/p>\n <\/p>\n \u56fe28 PCB \u710a\u76d8\u53ef\u710a\u6027\u8bd5\u9a8c\u7684\u5178\u578b\u7167\u7247 \u00a01\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u56fe29 PCB \u710a\u76d8\u53ef\u710a\u6027\u8bd5\u9a8c\u7684\u5178\u578b\u7167\u7247 \u00a02<\/p>\n 2.6 SEM\u548cEDAX \u5206\u6790<\/p>\n \u9996\u5148\u5bf9\u56fe 21 \u6240\u793a\u7684\u5f00\u88c2\u710a\u70b9\u8fdb\u884c EDAX \u5206\u6790\uff0c\u53d1\u73b0\u6807\u8bc6 A \u5904\u710a\u76d8\u5904\u7684\u4e3b\u8981\u7684\u5143 \u00a0\u7d20\u6210\u5206\u4e3a\u954d(Ni)\u548c\u78f7(P)\u4ee5\u53ca\u5c11\u91cf\u7684\u9521\uff08Sn\uff09\uff08\u89c1\u56fe \u00a030\uff09\uff0c\u7531\u4e8e\u9521\u542b\u91cf\u8f83\u5c11\uff0c\u8fd9\u8bf4\u660e\u5f00\u88c2\u662f\u4f4d\u4e8e \u00a0PCB \u710a\u76d8\u4e0a\u7684\u954d\u9540\u5c42\u4e0e\u710a\u6599\u4e4b\u95f4\uff0c\u540c\u65f6\u4e5f\u8bf4\u660e \u00a0PCB \u710a\u76d8\u4e0a\u7684\u954d\u9540\u5c42\u4e0e \u710a\u6599\u4e4b\u95f4\u672a\u5f62\u6210\u826f\u597d\u7684\u91d1\u5c5e\u95f4\u5316\u5408\u7269\u5c42\u3002<\/p>\n <\/p>\n <\/p>\n \u56fe30 \u00a0\u88c2\u7f1dA \u5904PCB\u710a\u76d8\u7684\u80fd\u8c31\u56fe <\/p>\n <\/p>\n \u56fe31 \u00a0\u88c2\u7f1dB\u5904\u710a\u6599\u7684\u80fd\u8c31\u56fe <\/p>\n <\/p>\n \u56fe32 CPU\u5668\u4ef6\u8131\u843d\u7684PCB \u710a\u76d8\u5178\u578b\u5916\u89c2\u7167\u7247 \u00a01\u00a0 \u00a0 \u00a0\u56fe33 CPU\u5668\u4ef6\u8131\u843d\u7684PCB\u710a\u76d8\u5178\u578b\u5916\u89c2\u7167\u7247 2<\/p>\n 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\u00a0\u7a7a\u767dPCB\u710a\u76d8\u7684\u80fd\u8c31\u56fe<\/p>\n 2.7 \u7efc\u5408\u5206\u6790<\/p>\n (1)\u7531BGA\u710a\u70b9\u7684\u91d1\u76f8\u5207\u7247\u548cX\uff0dray\u53ef\u89c1\uff0cBGA\u710a\u7403\u710a\u6599\u4e0ePCBA\u710a\u76d8\u6da6\u6e7f\u6027\u8f83\u5dee\uff0c\u710a\u6599\u4e0e\u710a\u76d8\u4e4b\u95f4\u672a\u5f62\u6210\u826f\u597d\u7684\u91d1\u5c5e\u95f4\u5408\u91d1\u5c42\uff0c\u56e0\u800c\u710a\u6599\u4e0e\u710a\u76d8\u4e4b\u95f4\u7684\u7ed3\u5408\u529b\u8f83\u5dee\uff0c\u81f4\u4f7f\u710a\u70b9\u5bb9\u6613\u51fa\u73b0\u88c2\u7f1d\u3002<\/p>\n \u800c\u5bfc\u81f4\u710a\u7403\u710a\u6599\u4e0ePCB\u710a\u76d8\u6da6\u6e7f\u4e0d\u826f\u7684\u539f\u56e0\u53ef\u80fd\u5b58\u5728\u5982\u4e0b\u51e0\u65b9\u9762\uff1a<\/p>\n (a)PCB\u710a\u76d8\u6c27\u5316\u4e25\u91cd\u6216\u6cbe\u6c61\u5916\u6765\u6709\u673a\u7269\u5bfc\u81f4\u710a\u76d8\u7684\u53ef\u710a\u6027\u4e0d\u826f\u3002<\/p>\n (b)\u4f7f\u7528\u7684\u710a\u9521\u818f\u53ef\u710a\u6027\u4e0d\u826f\u3002<\/p>\n (c)BGA\u710a\u9521\u7403\u8d28\u91cf\u8f83\u5dee\uff0c\u53ef\u710a\u6027\u4e0d\u826f\u3002<\/p>\n 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(3)\u8fdb\u884c\u710a\u9521\u818f\u7684\u53ef\u710a\u6027\u8bd5\u9a8c\uff0c\u53d1\u73b0\u710a\u9521\u818f\u7684\u53ef\u710a\u6027\u826f\u597d\uff0c\u8fd9\u8bf4\u660eBGA\u91d1\u76f8\u5207\u7247\u4e2d\u53d1\u73b0\u7684\u710a\u7403\u4e0e\u710a\u76d8\u6da6\u6e7f\u4e0d\u826f\u5e76\u4e0d\u662f\u7531\u4e8e\u6240\u4f7f\u7528\u7684\u710a\u9521\u818f\u53ef\u710a\u6027\u8f83\u5dee\u5f15\u8d77\u7684\u3002<\/p>\n (4)\u8fdb\u884c\u7a7a\u767dPCB\u710a\u76d8\u53ef\u710a\u6027\u8bd5\u9a8c\uff0c\u53d1\u73b0PCB\u710a\u76d8\u7684\u53ef\u710a\u6027\u8f83\u5dee\uff0c\u8bf4\u660e\u710a\u7403\u4e0e\u710a\u76d8\u6da6\u6e7f\u4e0d\u826f\u548c\u7ed3\u5408\u529b\u4e0d\u5f3a\u4e0ePCB\u710a\u76d8\u7684\u53ef\u710a\u6027\u8f83\u5dee\u6709\u5173\uff1b\u5bf9\u7a7a\u767dPCB\u710a\u76d8\u548c\u5668\u4ef6\u8131\u843d\u7684 \u00a0PCB\u710a\u76d8\u8fdb\u884cSEM\u89c2\u5bdf\u548cEDAX 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\n2.2 X-RAY \u00a0\u68c0\u6d4b
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\n2.4 \u710a\u9521\u818f\u6da6\u6e7f\u6027\u5206\u6790<\/p>\n
\n2.5 \u7a7a\u767dPCB\u677f\u710a\u76d8\u7684\u53ef\u710a\u6027\u8bd5\u9a8c<\/p>\n
\n\u56fe31\u662f\u56fe21\u6807\u8bc6B\u5904\u710a\u6599\u7684\u80fd\u8c31\u56fe\uff0c\u7531\u56fe\u53ef\u53d1\u73b0\u4e3b\u8981\u542b\u6709\u9521\uff08Sn\uff09\uff0c\u78f7\uff08P\uff09\uff0c \u954d(Ni)\uff0c\u78b3\uff08C\uff09\u7b49\u5143\u7d20\uff0c\u7531\u8c31\u56fe\u4e2d\u68c0\u6d4b\u5230\u954d\u542b\u91cf\u8f83\u591a\uff0c\u8fd9\u4e5f\u80fd\u8fdb\u4e00\u6b65\u8bf4\u660ePCB\u710a\u76d8\u4e0a\u7684\u954d\u9540\u5c42\u4e0e\u710a\u6599\u4e4b\u95f4\u672a\u5f62\u6210\u826f\u597d\u7684\u91d1\u5c5e\u95f4\u5316\u5408\u7269\u5c42\u3002<\/p>\n
\n\u53e6\u5916\uff0c\u5bf9CPU\u5668\u4ef6\u8131\u843d\u7684PCB\u710a\u76d8\u8fdb\u884cSEM\u89c2\u5bdf\uff0c\u53d1\u73b0\u710a\u76d8\u8868\u9762\u5b58\u5728\u8f83\u591a\u7684\u88c2\u7f1d\uff0c\u8fd9\u8bf4\u660e\u954d\u9540\u5c42\u7684\u8868\u9762\u7684\u81f4\u5bc6\u6027\u8f83\u5dee\uff08\u89c1\u56fe32\u548c\u56fe33\uff09\uff0c\u56e0\u6b64\uff0c\u540e\u7eed\u6d78\u91d1\u5de5\u827a\u4e2d\u7684\u9178\u6db2\u5bb9\u6613\u6b8b\u7559\u5176\u4e2d\uff0c\u81f4\u4f7f\u954d\u9540\u5c42\u8150\u8680\u6c27\u5316\uff0c\u8fd9\u5fc5\u5c06\u5bfc\u81f4\u710a\u76d8\u7684\u53ef\u710a\u6027\u4e0d\u826f\u3002<\/p>\n