MULTILAYER CERAMIC SUBSTRATE, METHOD FOR MANUFACTURING SAME, AND ELECTRONIC COMPONENT MODULE

摘要

In order to improve bonding strength of a surface electrode on a multilayer ceramic substrate, an oxide, such as alumina, has been added to a conducting paste for forming the surface electrode, and reacted with a glass component in a ceramic material, while performing firing. There has been an issue of having infiltration of the glass component disturbed and having sintering of the surface electrode not sufficiently proceed in a surface electrode region in contact with a via conductor. In order to solve the issue, a surface layer via conductor (16) connected to a surface electrode (14) is formed such that the surface layer via conductor penetrates the surface electrode (14), and that one end portion of the surface layer via conductor is exposed from the surface electrode (14). Preferably, a plating film (15) or the like is formed on the surface electrode (14) and on the one end portion of the surface layer via conductor (16).