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Date: | Wed, 24 Mar 2010 13:32:54 +0800 |
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通常板厂阻焊对位精度都可以做到单边阻焊开窗3mil,阻焊开窗3mil及以上时,阻焊不会上焊盘。先看设计文件阻焊开窗是多少?再核实板厂的能力。阻焊上焊盘总归不好。
--
吴波
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13602585865
在2010-03-24 11:15:51,"朱慧" <[log in to unmask]> 写道:
大家好!
我想询问一个有关PCB阻焊剂涂覆的问题!
有关PCB阻焊剂的涂覆在IPC-A-610D中有相关描述,但有关阻焊剂涂覆时覆盖焊盘的要求有谁知道相应标准及出处呢?(意思也就是说,供应商送来的基板在印刷阻焊剂时出现了少许偏位,出现了覆盖少许焊盘的现象,但不影响焊接的情况下现怎样判定覆盖多少可以接受?或是直接拒收?)
以上
劳驾知悉者!
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