板子上的,CA3140AMZ、OP27GSZ、ISO124U在工作后都发热,但是同型号的直插封装就不热。这是怎么回事的?
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板子上的,CA3140AMZ、OP27GSZ、ISO124U在工作后都发热,但是同型号的直插封装就不热。这是怎么回事的?