A coil apparatus (10) including a winding (11), a bobbin (12) around which the winding (11) is wound, and a terminal fitting (13) connected with the winding (11). In this construction, the terminal fitting (13) is mounted on the bobbin (12), and a connector (15) for connecting the terminal fitting (13) to an external connector is formed integrally with the bobbin (12). The coil apparatus can be produced at a low cost because the connector (15) is formed integrally with the bobbin (12) around which the winding (11) is wound.