Patent ID: 8587116

Claim:
A semiconductor module comprising: a rigid base; an insulating substrate comprising an insulation carrier featuring a top side provided with a top side metallization layer, and a bottom side provided with a bottom side metallization layer; a power semiconductor chip arranged on the top side metallization layer; a stamped or embossed metal sheet insert arranged between the base and the bottom side metallization layer and comprising a wavy shape with a plurality of wave crests and a plurality of wave troughs, the wave crests facing towards the bottom side metallization layer and the wave troughs facing towards the base; a solder arranged between the bottom side metallization layer and the base, the solder completely filling all interstices between the bottom side metallization layer and the base; wherein the solder comprises first solder regions having a first melting point and a second solder region having a second melting point that is different than the first melting point.