Patent ID: 8736043
Filing Date: 2014-05-27
Classification: H01L

Abstract:
1. A power semiconductor device comprising: a first chip mounted substrate on which a switching device and a free wheeling diode are mounted; a second chip mounted substrate on which a switching device and a free wheeling diode are mounted; a pair of a collector electrode and an emitter electrode to electrically parallelly connect collector traces and emitter traces on the two chip mounted substrates; and a filled insulating material, wherein the collector electrode and the emitter electrode face each other, a first interval is provided outside the insulating material, and a second interval smaller than the first interval is provided inside the insulating material, when a collector electrode terminal is on an upper side and an emitter electrode terminal is on a lower side when viewed in plane, a collector electrode joint region as a joint region between the collector trace and the collector electrode on the chip mounted substrate and an emitter electrode joint region as a joint region between the emitter trace and the emitter electrode are located at a same position in an up-and-down direction and are adjacent in a right-and-left direction at an interval of 2 mm or more and 4 mm or less, and the collector electrode joint region on the first chip mounted substrate arranged on the upper side and the collector electrode joint region on the second chip mounted substrate arranged on the lower side, and the emitter electrode joint region on the first chip mounted substrate and the emitter electrode joint region on the second chip mounted substrate are respectively arranged at same positions in the right-and-left direction.