Patent ID: 7820916

Claim:
A composite ceramic substrate comprising: a ceramic substrate including a surface-mounted component mounted thereon; at least one wiring pattern disposed in the ceramic substrate; a plurality of external terminal electrodes connecting the at least one wiring pattern to a surface electrode of a motherboard; a plurality of convex leg portions made of resin and arranged on the ceramic substrate such that a first end surface of each of the plurality of convex leg portions supports a respective one of the plurality of external terminal electrodes and a second end surface of each of the plurality of convex leg portions opposite to the first end surface is in direct contact with and directly connected to the ceramic substrate; and a via-hole conductor provided in each of the plurality of convex leg portions and connecting the respective one of the plurality of external terminal electrodes to the at least one wiring pattern; wherein the plurality of convex leg portions are arranged so as to be spaced apart from one another.