Patent ID: 7746197

Claim:
A noise filter array comprising: a plurality of filter elements, each of which includes an LC parallel resonant circuit including a coil and a capacitor and an LC series resonant circuit, arranged substantially parallel to one another in an array and integrally provided; wherein the LC series resonant circuits are defined by grounding capacitors including a single common ground-side electrode and signal-side electrodes, and a single inductance adjusting conductor common to the grounding capacitors; the single common ground-side electrode of the grounding capacitors of the LC series resonant circuits is arranged so as to face the signal-side electrodes of the grounding capacitors, and the common ground-side electrode is connected through a via hole to the inductance adjusting conductor; and a length from a connection location, at which the inductance adjusting conductor is connected to the via hole, to a ground terminal is substantially equal in each of the plurality of filter elements.