Keramisches Mehrschichtsubstrat und Verfahren zu seiner Herstellung.

摘要

A multilayer ceramic substrate comprises several conductive layers and at least one insulating layer therefor, whereby the insulating layer is formed from an inorganic composition comprising: - at least one member selected from Al2O3 and ZrO2; together with a mixture of SiO2, PbO and at least one member selected from the group of BaO, CaO and ZnO. The multilayer ceramic substrate can be sintered at low temperature in air resulting in the desired properties of heat resistance, solderability, insulation layer resistance and avoidance of microcrack formation when laser trimming a top resistance film.