Patent ID: 8994165
Filing Date: 2015-03-31
Classification: H01L,H05K,Y02P

Abstract:
1. A power semiconductor device comprising: a circuit substrate including a metal heat sink and including a thermal conductive insulation layer joined to one surface of the metal heat sink and including wiring patterns provided on a surface of the thermal conductive insulation layer, which surface is opposite to a surface, of the thermal conductive insulation layer, joined to the metal heat sink; power semiconductor elements joined to the wiring patterns; cylindrical external terminal communication sections joined to the wiring patterns and including holes exposed at a top surface of a transfer molding resin respectively having a flat vertical inner surface on a cross-section of the cylindrical external terminal communication section in a direction perpendicular to the wiring patterns; and wiring means for establishing conduction between the power semiconductor elements, between the wiring patterns, and between the power semiconductor elements and the wiring patterns, the circuit substrate, the power semiconductor elements, the cylindrical external terminal communication sections, and the wiring means, all being sealed with the transfer molding resin, wherein the cylindrical external terminal communication sections are joined to the wiring patterns so as to be substantially perpendicular to the wiring patterns, such that a plurality of cylindrical external terminal communication sections among the cylindrical external terminal communication sections are two-dimensionally arranged on each of wiring patterns that act as main circuits, and external terminals are insertable and connectable to the holes of the cylindrical external communication sections.