{"id":381,"date":"2009-02-25T12:22:43","date_gmt":"2009-02-25T04:22:43","guid":{"rendered":"http:\/\/www.g4e.cn\/wordpress\/?p=381"},"modified":"2013-11-18T16:15:34","modified_gmt":"2013-11-18T08:15:34","slug":"lead-free-underfillunderfirm-pop-part-on-part-repair-procedures","status":"publish","type":"post","link":"http:\/\/www.g4e.cn\/wordpress\/adhesiveknowledge\/381.html","title":{"rendered":"Lead-Free Underfill\/Underfirm POP (Part on Part) Repair Procedures"},"content":{"rendered":"

\u524d\u51e0\u65e5\u5728\u56fd\u5916\u7684\u4e00\u4e2a\u901a\u8baf\u8bba\u575bGSM-Forum\uff08http:\/\/forum.gsmhosting.com\/vbb\/index.php<\/a>\uff09\u4e0a\u9762\u4e0b\u8f7d\u4e86\u4e00\u4efd\u5173\u4e8eunderfill\u8fd4\u4fee\u7684\u6280\u672f\u8d44\u6599\uff0c\u4e00\u76f4\u6ca1\u6709\u65f6\u95f4\u7ec6\u770b\uff0c\u8fd1\u65e5\u62bd\u7a7a\u5b66\u4e60\u4e86\u4e00\u904d\u3002\u8fd9\u662f\u4e00\u4efdmotorola\u516c\u53f8\u5185\u90e8\u7684\u5173\u4e8eRepair Methods\u7684\u64cd\u4f5c\u89c4\u7a0b\uff0c\u662f2007\u5e74\u7684\u7248\u672c\uff0c\u6b64\u8d44\u6599\u56fe\u6587\u5e76\u8302\u7684\u9610\u8ff0\u4e86\u51e0\u79cd\u4e0d\u540c\u60c5\u51b5\u4e0b\u7684\u8fd4\u4fee\uff0c\u5305\u62ec\u666e\u901a\u5143\u5668\u4ef6\u7684\u8fd4\u4fee\u3001BGA\u7684\u8fd4\u4fee\u3001POP\u7684\u8fd4\u4fee\uff0c\u5176\u4e2d\u540e\u4e24\u8005\u7684\u8fd4\u4fee\u6db5\u76d6\u4e86\u4f7f\u7528underfill\u6216\u8005underfirm\uff08underfilm\uff1f\uff09\u7684\u60c5\u51b5\uff0c\u7136\u540e\u8fd8\u4ecb\u7ecd\u4e86\u81ea\u5236\u7684\u7a7a\u6c14\u51b7\u5374\u7cfb\u7edfDIY Air Cooling System\u3001\u66ff\u4ee33M\u9694\u70ed\u80f6\u5e26\u7684\u7ecf\u6d4e\u5b9e\u7528\u7684\u65b9\u6cd5Heat Shielding Methods\uff0c\u4ee5\u53ca\u6574\u4e2a\u8fc7\u7a0b\u4e2d\u4f7f\u7528\u7684\u8bbe\u5907\u3001\u5de5\u5177\u3001\u6750\u6599\u7b49\u7b49\uff0c\u5177\u4f53\u5185\u5bb9\u5927\u5bb6\u53ef\u5148\u53c2\u770b\u4ee5\u4e0b\u76ee\u5f55\u518d\u51b3\u5b9a\u662f\u5426\u9700\u8981\u4e0b\u8f7d\u67e5\u770b\uff1a
\nTable of Contents
\n1.0\u00a0Introduction\u00a04
\n1.1\u00a0Scope\u00a04
\n1.2\u00a0Terms And Acronyms\u00a04
\n1.3\u00a0Safety and ESD Precautions\u00a04
\n1.4\u00a0Housekeeping\u00a04
\n2.0\u00a0Lead Free\u00a05
\n2.1\u00a0Equipment\/Tools Set-up\u00a05
\n2.2\u00a0Procedures\u00a06
\n2.2.1\u00a0Removal of SMD Components\u00a06
\n2.2.2\u00a0Removal of BGA Components\u00a06
\n2.2.3\u00a0Placement of BGA Components\u00a07
\n2.3\u00a0Inspection Criteria\u00a07
\n3.0\u00a0Underfill\/Underfirm Rework Procedures\u00a08
\n3.1\u00a0Equipment\/Tools Set-up\u00a08
\n3.2\u00a0Underfill Rework Process\u00a09
\n3.3\u00a0Underfilrm Rework Process\u00a011
\n4.0\u00a0POP Parts Replacment\u00a013
\n4.1\u00a0Equipment\/Tools Set-up\u00a013
\n4.2\u00a0Procedures\u00a014
\n4.2.1\u00a0Set-up for POP IC Removal\u00a014
\n4.2.2\u00a0POP IC Removal\u00a014
\n4.2.3\u00a0POP – Argon IC Placement\u00a016
\n4.2.4\u00a0Argon IC Current Check\u00a017
\n4.2.5\u00a0POP \u2013 Flash IC Placement\u00a018
\n4.2.6\u00a0Argon and Flash IC Current Check\u00a018
\n4.2.7\u00a0Software Upgrading Procedures\u00a019
\n4.2.8\u00a0POP IC Shield Placement\u00a020
\n5.0\u00a0Appendix A – DIY Air Cooling System\u00a021
\n6.0\u00a0Appendix B \u2013 Heat Shielding Methods\u00a026
\n6.1\u00a0Using Kapton Tape on recycled shields\u00a026
\n6.2\u00a0Using Enhanced Heat Shielding Tape on recycled shields\u00a027
\n5.3\u00a0Using Aluminium Blocks to cool ICs\u00a029
\n7.0\u00a0Appendix C \u2013 Soldering Visual Inspection\u00a031
\n7.1\u00a0Purpose\u00a031
\n7.2\u00a0Insepction Criteria\u00a031<\/p>\n

\u770b\u5b8c\u6b64\u7bc7\u8d44\u6599\u540e\u6709\u51e0\u70b9\u6536\u83b7\uff1a
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\n2\u3001\u6587\u4e2d\u63d0\u5230\u7684\u8bbe\u5907\u548c\u6750\u6599\u90fd\u6709\u8be6\u7ec6\u7684\u4f9b\u5e94\u5546\u53ca\u4ea7\u54c1\u578b\u53f7\uff0c\u60f3\u53c2\u8003\u7684\u670b\u53cb\u53ef\u76f4\u63a5\u901a\u8fc7\u91cc\u9762\u7684\u94fe\u63a5\u53bb\u67e5\u770b\u66f4\u8be6\u7ec6\u7684\u5185\u5bb9\uff0c\u4e0d\u8fc7\u57fa\u672c\u90fd\u662f\u56fd\u5916\u7684\u94fe\u63a5\uff0c\u8bbe\u5907\u5546\u4e3b\u8981\u662fWeller\u3001Metcal\u3001Hakko\u3001Steinel\u7b49\u7b49\uff0c\u4f7f\u7528\u7684\u52a9\u710a\u5242\u4ec0\u4e48\u7684\u597d\u50cf\u4e3b\u8981\u662f\u94df\u6cf0\u516c\u53f8\u7684\uff1b
\n3\u3001\u91cc\u9762\u63d0\u5230\u7684Underfirm\uff08\u8fd8\u662funderfilm\uff1f Underfirm\u5728google\u91cc\u9762\u51e0\u4e4e\u67e5\u4e0d\u5230\uff09\u5de5\u827a\uff0c\u5176\u5b9e\u6709\u70b9\u7c7b\u4f3ccorner bonding\u7684\u4f5c\u7528\uff0c\u800c\u4e0d\u662f\u4f20\u7edf\u610f\u4e49\u4e0b\u7684underfill\u5de5\u827a\u4e86\uff0c\u800c\u8fd9\u4e00\u5757\u5e94\u8be5\u5728\u5927BGA\u65b9\u9762\u5e94\u7528\u4f1a\u6bd4\u8f83\u591a\u4e00\u4e9b\uff1b
\n4\u3001\u5173\u4e8ePOP\u53e0\u88c5\u7684\u8fd4\u4fee\u6587\u4e2d\u4e5f\u505a\u4e86\u4ecb\u7ecd\uff0c\u662f\u5c06Flash IC \u53e0\u88c5\u5728Argon IC\u4e0a\u9762\u7684\uff0c\u76ee\u524d\u8fd9\u79cd\u5de5\u827a\u597d\u50cf\u5728\u56fd\u5185\u5e94\u7528\u5f97\u597d\u50cf\u8fd8\u4e0d\u662f\u592a\u591a\uff1b
\n5\u3001\u8fd8\u6709\u4e00\u4e2a\u5c31\u662f\u6587\u4e2d\u63d0\u5230\u7684\u9694\u70ed\u5c4f\u853d\u7684\u95ee\u9898\uff0c\u5728\u8fd4\u4fee\u8fc7\u7a0b\u4e2d\u4e3a\u4fdd\u62a4\u8fd4\u4fee\u5668\u4ef6\u65c1\u8fb9\u7684\u4e0d\u8010\u70ed\u7684\u5143\u5668\u4ef6\u65f6\uff0c\u9700\u8981\u4f7f\u7528\u805a\u9170\u4e9a\u80fa\u80f6\u5e26(Kapton tape)\uff08\u597d\u50cf\u662f3M\u7684Polyimide Film Tape 5419\uff09\u3001\u6216\u8005\u4f7f\u7528Enhanced Heat Shielding Tape\uff08\u5c06\u516d\u5c42\u65e5\u4e1c\u7535\u5de5\u7684\u67d0\u79cd\u80f6\u5e26\u7c98\u5728\u4e00\u8d77\uff09\u3001\u6216\u8005\u4f7f\u7528\u94dd\u6761Aluminium Blocks\u6765\u8d77\u4fdd\u62a4\u4f5c\u7528\uff1b
\n6\u3001\u5173\u4e8e\u5143\u5668\u4ef6\u8fd4\u4fee\u540e\u7684\u63a5\u53d7\u6807\u51c6\u6587\u4e2d\u4e5f\u6709\u8be6\u7ec6\u7684\u56fe\u6587\u89e3\u6790\uff0c\u5f52\u7eb3\u8d77\u6765\u5982\u4e0b\uff1a
\n\u25a0Any unflush chip component will be rejected if it has less than 50% solder joint
\n\u25a0Any missing metallization found at chip capacitor or chip resistor reject if more than 50%
\n\u25a0Any missing solder paste on component is a reject
\n\u25a0Any misalignment chip component is acceptable based on 50% metallization on the pad
\n\u25a0Any tombstone found is a reject
\n\u25a0Any marking overturn is not acceptable for resistor (can cause obstruction) but acceptable for capacitor
\n\u25a0Any crack component is a reject
\n\u25a0Any wrong orientation of SOT and tantalum cap is a reject
\n\u25a0Any missing component is a reject
\n\u25a0Any wrong orientation of chip carrier after reflow is a reject
\n\u25a0Solder short found at a different runner is a reject
\n\u25a0Any wrong orientation of SOT and tantalum capacitor is a reject
\n\u25a0Any unsolder lead found at QFP is a reject
\n\u25a0Any misalignment QFP is based on 25% of the pad
\n\u25a0Any bend lead on QFP is a reject
\n\u25a0Insufficient solder found at chip transistor, reject if it less than 50% of lead soldered
\n\u25a0Chipped off found at chip components. Reject if the terminal has less than 50% of its metallization
\n\u25a0Insufficient solder found at chip transistor, reject if it less than 50% of lead soldered
\n\u25a0Reject solder short between the leads
\n\u4e0d\u8fc7\u4e0a\u9762\u5f88\u591a\u62d2\u6536\u6807\u51c6\u4e2a\u4eba\u89c9\u5f97\u592a\u5bbd\u677e\u4e86\u4e00\u70b9\uff0c\u6216\u8bb8\u8fd9\u662f\u9488\u5bf9\u8fd4\u4fee\u540e\u7684\u800c\u8a00\uff0c\u800c\u4e0d\u662f\u4e00\u6b21\u6210\u54c1\u7684\u65f6\u5019\uff0c\u6240\u4ee5\u964d\u4f4e\u4e86\u4e00\u4e9b\u8981\u6c42\u3002
\n\u5176\u5b9e\u8c08\u5230\u8fd4\u4fee\uff0c\u5176\u4e2d\u4eba\u7684\u56e0\u7d20\u4e5f\u975e\u5e38\u91cd\u8981\uff0c\u8bf4\u767d\u4e86\u8fd9\u4e5f\u662f\u662f\u4e2a\u6280\u672f\u6d3b\uff0c\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff0c\u5f53\u65f6\u6211\u4eec\u6709\u4e00\u4e2a\u5ba2\u6237\u56e0\u4e3a\u662f\u9996\u6b21\u4f7f\u7528underfill\u5de5\u827a\uff0c\u6240\u4ee5\u5728\u5bfc\u5165underfill\u7684\u65f6\u5019\u4e0d\u7ba1\u662f\u7528\u9053\u5c14\u7684DU902N\u8fd8\u662f\u4f7f\u7528\u4e50\u6cf0\u7684underfill\u6216\u8005\u5176\u5b83\u54c1\u724c\u7684underfill\u4ea7\u54c1\uff0c\u8fd4\u4fee\u6210\u529f\u7387\u90fd\u975e\u5e38\u4f4e\uff0c\u66fe\u4e00\u5ea6\u60f3\u653e\u5f03\u6b64\u5de5\u827a\uff0c\u540e\u6765\u516c\u53f8\u4ece\u53e6\u4e00\u4e2a\u7528underfill\u5de5\u827a\u591a\u5e74\u7684\u5ba2\u6237\u90a3\u91cc\u8bf7\u4e86\u4e00\u4f4d\u8fd4\u4fee\u5de5\u7a0b\u5e08\u53bb\u5230\u73b0\u573a\uff0c\u51e0\u5206\u949f\u5c31\u89e3\u51b3\u4e86\u4e0d\u6613\u8fd4\u4fee\u7684\u95ee\u9898\u3002\u8fd9\u4f4d\u5de5\u7a0b\u5e08\u5f00\u73a9\u7b11\u8bf4\u5c31\u7b97\u662femersoncuming\u7684\u4e0d\u53ef\u8fd4\u4fee\u578bunderfill-EX1216\u4ed6\u90fd\u53ef\u4ee5\u4fee\u597d\uff0c\u53ea\u662f\u9700\u8981\u7684\u65f6\u95f4\u8981\u957f\u4e00\u4e9b\uff0c\u6210\u529f\u7387\u76f8\u5bf9\u4f4e\u4e00\u70b9\u70b9\uff0c\u5475\u5475\uff01\u6211\u4e2a\u4eba\u7684\u89c2\u5ff5\u4e5f\u662f\u5982\u6b64\uff0c\u4f7f\u7528\u4e86underfill\u7684BGA\u8fd4\u4fee\u80af\u5b9a\u6bd4\u65e0underfill\u7684\u8981\u96be\u4e00\u4e9b\uff0c\u4e0d\u7ba1\u8fd9\u6b3eunderfill\u5982\u4f55\u53f7\u79f0\u53ef\u8fd4\u4fee\uff0c\u6613\u8fd4\u4fee\u3002\u6240\u4ee5\u6ca1\u6709\u7528\u8fc7underfill\u5de5\u827a\u7684\u5de5\u7a0b\u5e08\u4eec\u53ef\u4e0d\u8981\u5bf9\u586b\u80f6\u540e\u7684\u8fd4\u4fee\u62a5\u4ee5\u4ee5\u524d\u4e00\u6837\u7684\u671f\u671b\u54e6\u3002\u6362\u4e2a\u89d2\u5ea6\uff0c\u4f7f\u7528\u4e86underfill\u540e\u7406\u8bba\u4e0a\u7531\u4e8eBGA\u7684\u95ee\u9898\u62ff\u56de\u6765\u4fee\u7684\u6982\u7387\u5e94\u8be5\u4e5f\u8981\u964d\u4f4e\u5f88\u591a\u7684\u3002<\/p>\n

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\u534e\u4e3a\u7f51\u76d8\u4e0b\u8f7d\uff1ahttp:\/\/dl.dbank.com\/c05nnboeq9<\/a><\/p>\n

\"\"  Lead-Free Underfill Underfirm POP Repair Procedures<\/strong> (6.0 MB, 16 \u6b21)
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