Patent ID: 7750461

Claim:
A semiconductor module comprising a metal-ceramic substrate, at least one first power circuit part having at least one power component, at least one second low-power circuit part of the module having at least one low power component, said substrate comprising at least one ceramic layer having a thickness between 0.2-2 mm and at least one metallic layer of a first type applied to the surface of the ceramic layer and with a thickness between 0.1 and 0.9 mm, said substrate further comprising an insulating layer made of a glass-containing paste material with a thickness of approximately 0.015-0.15 mm and being applied only to a surface of at least one partial area of the at least one metallic layer of the first type which surface facing away from the ceramic layer, at least one structured metallic layer of a second type having a thickness between 0.015-0.15 mm is applied to this insulating layer wherein the insulating layer is adhered to the at least one metallic layer of the first type by a process comprising drying the paste and then baking the paste at a temperature between 750° C. and 1030° C. so that the paste forms the insulating layer and then cooling the paste so that it adheres to the at least one metallic layer of the first type thereby achieving the desired thickness, the at least one metallic layer of the first type is structured such that it forms strip conductors, contact surfaces or mounting surfaces for the at least one power component as well as said at least one partial area of the at least one metallic layer of the first type, wherein the at least one metallic layer of the second type forms strip conductors, contact surfaces or mounting surfaces for the at least one low power component, and wherein the insulating layer is provided in a depression or recess of the at least one partial area of the at least one metallization of the first type.