A circuit device having improved packaging density is provided. A circuit device of the present invention includes: a circuit board having its surface covered with an insulating layer; conductive patterns formed on a surface of the insulating layer; circuit elements electrically connected to the conductive patterns; and leads connected to pads formed of the conductive patterns. Furthermore, a control element is fixed to an upper surface of a land part formed of a part of a lead, and a back surface of the land part is spaced apart from an upper surface of the circuit board.