An electronic device includes a circuit board with an insulating substrate, a wiring at the substrate, an electronic component mounted at the substrate and electrically connected to the wiring, at least one through hole through the substrate from one surface to an opposite surface of the one surface of the substrate, and a conductive member arranged at a surface of the through hole and electrically connected to the wiring; and further includes: a sealing resin; and a cap including an annular connection with a part connected to the substrate and a recess recessed from the annular connection. Furthermore, in the cap, at least a part of the connection is connected to the substrate, the cap being sealed integrally with the electronic component by the sealing resin while arranging a space communicating with the through hole; and a terminal is inserted into the through hole and electrically connected to the wiring.