Patent ID: 7009284

Claim:
A semiconductor apparatus comprising: a plurality of substrate units each including a semiconductor element and a pair of insulation substrates having thermal conductivity and holding the semiconductor element therebetween; and a radiation member contacting the plurality of substrate units for radiating heat produced from the plurality of substrate units, the radiation member having a single refrigerant passage therein in which refrigerant flows for absorbing the heat; wherein: the radiation member includes a cooling block which is composed of a base portion on which the plurality of substrate units are disposed in parallel and a plurality of protruding portions respectively contacting the corresponding plurality of substrate units; and the single refrigerant passage has a main passage defined in the base portion to face all the plurality of substrate units through a wall of the base portion, and a plurality of sub-passages defined in the plurality of protruding portions to face the corresponding plurality of substrate units through walls of the plurality of protruding portions.