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PCBA制造电气可靠性

来源: 作者: 添加日期:2020-05-26 查看次数:0

通常同一块PCB电路板要经过SMT贴片加工再流焊、波峰焊、返修等工艺,很可能形成不同的残留物,在潮湿环境和一定电压下,可能会与导电体之间发生电化学反应,引起表面绝缘电阻(SIR)的下降。如果有电迁移和枝状结晶生长出现,将发生导线间的短路,造成电迁移(俗称“漏电”)的风险。

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