Patent ID: 8026778

Claim:
An LC composite component comprising: a multilayer substrate including a plurality of dielectric layers; at least two input/output terminal electrodes provided in the multilayer substrate; a ground terminal electrode provided in the multilayer substrate; and an LC resonant circuit provided in the multilayer substrate, the LC resonant circuit including two inductors including first ends that are connected to respective ones of the at least two input/output terminal electrodes and a capacitor including a first end that is connected to one of the at least two input/output terminal electrodes; wherein the two inductors include line electrodes provided on the plurality of dielectric layers of the multilayer substrate and via electrodes arranged to connect neighboring ones of the line electrodes in a lamination direction of the plurality of dielectric layers, and are defined by two helical electrodes that have a central axis extending in the lamination direction; the two helical electrodes are arranged so that one of the helical electrodes overlaps the other helical electrode at least partially when the multilayer substrate is viewed in the lamination direction; and at least one of the line electrodes of one of the two inductors and at least one of the line electrodes of the other of the two inductors are provided on a common dielectric layer of the plurality of dielectric layers.