Patent ID: 8064211

Claim:
An electronic component module comprising: a built-in IC substrate; and a passive component provided with a mounting surface for mounting on the built-in IC substrate, an opposed surface in opposition to the mounting surface, a side surface that intersects the mounting surface and the opposed surface, and a terminal electrode provided on the side surface, a cross section of the passive component taken perpendicular to the opposed surface and the mounting surface having a trapezoidal shape, the cross section having a length along the mounting surface that is shorter than a length along the opposed surface; wherein the built-in IC substrate comprises an IC embedded within a support substrate and has an extractor electrode disposed at a front surface of the built-in IC substrate at a position corresponding to the side surface of the passive component and has a via electrically connected from the extractor electrode, which is formed so as to pass through the front and a rear surface of the built-in IC substrate at a position corresponding to the side surface of the passive component; the extractor electrode of the built-in IC substrate is directly connected to the terminal electrode of the passive component, the terminal electrode provided on the side surface of the passive component; the passive component is an inductor; the inductor has a laminated configuration having a first winding on the opposed surface side, an insulating substrate, and a second winding on the mounting surface side; the first winding and the second winding have a shape of a spiral on front and rear surfaces of the insulating substrate, respectively, an inner end of the first winding and an inner end of the second winding are connected to each other with the insulating substrate between them; and an outer end of the first winding and an outer end of the second winding are electrically connected directly to the terminal electrode.