MULTILAYER CERAMIC SUBSTRATE AND PROCESS FOR PRODUCING THE SAME

摘要

This invention provides a multilayer ceramic substrate (5) comprising a glass ceramic (2a) and an external electrode (4) provided on the surface of the glass ceramic (2a). The external electrode contains an electroconductive material composed mainly of at least one material selected from Ag, Au, Pt, and Pd and at least one element selected from Bi, Cu, Ge, Mn, Ti, and Zn elements, and inorganic oxide particles (6) are provided on the surface of the external electrode. According to the above constitution, the adhesive strength after a humidity test or after plating can be ensured, and sagging of plating and solder erosion can be suppressed.