A power semiconductor module having a power circuit unit; a metal base for sealing the bottom of the module; an insulation substrate for electrically insulating the metal base from the power circuit unit; external input and output terminals connected to the power circuit unit; a resin case in which the...http://www.google.com/patents/US5920119?utm_source=gb-gplus-sharePatent US5920119 - Power semiconductor module employing metal based molded case and screw fastening type terminals for high reliability
