LC NOISE FILTER

摘要

Provided is an LC noise filter by which breakage due to static electricity or the like is prevented by increasing the withstand voltage. The LC noise filter is provided with a spiral electrode (130) formed on a semiconductor substrate (110); a spiral electrode (120), which is formed on the semiconductor substrate (110), at least partly overlaps the spiral electrode (130) by maintaining a prescribed distance from the spiral electrode, and has the overlapped portion arranged further from the semiconductor substrate (110) than the spiral electrode (130); and diodes (112D, 114D, 116D) which are connected to the end sections of the spiral electrodes (130, 120) and are formed as an input protection circuit composed of a semiconductor element formed on the semiconductor substrate (110).