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Failure Analysis on Optocoupler with Unstable Failure Phenomena
Author(s): 
Pages: 22-27
Year: Issue:  1
Journal: Electronic Product Reliability and Environmental Testing

Abstract: 光电耦合器4N55/883B发生一例两管腿间阻值小稳定的失效,并且在进行失效分析的过程中,该失效现象消失.经过运用一系列的失效分析技术方法进行试验,并结合理论分析,最终确认了该失效案例的失效机理,明确了失效原因,得到该失效为过电应力导致器件烧毁失效的结论.采用了包括图示仪检测、X光检查、扫描电子显微镜(SEM)检查、能量散射谱(EDS)分析以及聚焦离子束(FIB)制样等先进的分析技术和方法,对其它...
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