Patent ID: 7948007

Claim:
A power semiconductor module with a base plate, or for the purpose of direct assembly on a heat sink at least consisting of a housing, contact elements leading outwards for external load contacts, at least one electrically insulating substrate arranged within the housing, which in turn consists of an insulator body and a plurality of metallic connection tracks that are electrically insulated from each other and located on its first main surface facing away from the base plate or heat sink, power semiconductor components and connecting elements located thereon, and between two connection tracks and/or between connection tracks and power semiconductor components, wherein at least one contact element and/or connecting element is constructed as a metallic shaped part with at least one end section, wherein each end section extends perpendicularly to an associated connection track and is butt soldered with at least one contact surface to this connecting track, wherein this contact surface is constructed as a plurality of partial contact surfaces wherein each partial contact surface has a maximum surface area of 20 mm 2 , and each pair of partial contact areas has a maximum separation of 5 mm from each other, wherein the end section of the contact element and/or connecting element includes in its extent two constrictions closely neighboring the contact surfaces and arranged a small distance apart, which are formed from two overlapping slits spaced apart from each other and wherein the structure with these constrictions and slits provides strain relief for said contact element and/or connecting element.