Patent ID: 8461463

Claim:
A composite module comprising: a main substrate; a sub-substrate mounted on one principal surface of the main substrate; a sealing layer arranged on the one principal surface of the main substrate to at least partially cover and be in direct contact with the sub-substrate, the sealing layer defining a mount surface arranged to be mounted on a mount board; terminal electrodes disposed on the mount surface; and connection electrodes arranged on the one principal surface of the main substrate; wherein the terminal electrodes include at least one first terminal electrode drawn directly from the main substrate and at least one second terminal electrode drawn directly from the sub-substrate; the sub-substrate includes at least one first surface electrode arranged on a first principal surface of the sub-substrate and at least one second surface electrode arranged on a second principal surface of the sub-substrate; the connection electrodes include at least one first connection electrode electrically connected to the at least one first surface electrode; and the at least one second surface electrode is electrically connected to the at least one second terminal electrode; wherein the sub-substrate includes a built-in coil-shaped inductor; wherein the first and second principal surfaces of the sub-substrate are provided with at least one of electrodes connected to respective ends of the inductor, electrodes connected to each other through a via-hole conductor provided in the sub-substrate, or electrodes extending from the first principal surface of the sub-substrate through an end surface to the second principal surface of the sub-substrate.