Patent ID: 8395262
Filing Date: 2013-03-12
Classification: H01L

Abstract:
1. A semiconductor device comprising: an insulating substrate; a power semiconductor chip which is mounted on the insulating substrate; a circuit pattern which is formed in the insulating substrate; and an external connection terminal which is bonded to the circuit pattern by ultrasonic welding; wherein: the external connection terminal is made of copper to secure at least 90 in Vickers hardness as a hardness of at least each bonding end portion to be bonded to the circuit pattern, wherein the external connection terminal includes a belt-like bar, at least one terminal portion extending from one width-direction side of the bar, and the bonding end portions extended from the other width-direction side of the bar and arrayed in a length direction of the bar, the bar, the terminal portion and the bonding end portions being formed integrally, the whole of the external connection terminal or part of the external connection terminal including the bonding end portions being subjected to hardening treatment.