Patent ID: 8710832

Claim:
A rotation angle sensor comprising: a housing; a detected object rotatably held by the housing; a magnetism generation section provided to the detected body and configured to generate a magnetic field whose magnetic flux flows perpendicularly to a rotation axis of the detected object; a housing cover attached to a side of the housing adjacent to the magnetism generation section; a circuit substrate attached to the housing cover; a sensing IC including a magnetism detection element, a molded body, and a plurality of leads, the magnetism detection element configured to output a signal in accordance with a change in the magnetic field due to a rotation of the detected object, the molded body covering the magnetism detection element, one end portion of each of the plurality of leads electrically coupled with the magnetism detection element and the other end portion of each of the plurality of leads protruding from the molded body and electrically coupled with the circuit substrate; and a resin body sealing a portion of the molded body located between the magnetism detection element and the housing cover, the plurality of leads, and the circuit substrate.