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OPA2604AU开关机冲击声大



我司生产线在测试TX3600时发现90%开关机冲击声大不良现象,不符合要求。将1410+,1419+批次的IC与1531+5这个批次的IC 代换后测试OK.。请问出现这种情况大概有哪些原因?盼回复