An electronic device where molten solder does not come into contact with a sealant so as not to destroy a sealing function. An electronic device is provided with: an insulating base mounted on a printed circuit board; a common planar terminal provided so as to extend from an outer side surface to a bottom surface edge of the insulating base, and cause electrical continuity between the outer side surface and the bottom surface edge of the insulating base; a cover fitted to the insulating base and covering the common planar terminal; and a sealant sealing a gap between the outer side surface of the insulating base and an inner circumferential surface of the cover. A solder pool is formed in a position surrounded by the printed circuit board and the common planar terminal at the bottom surface edge of the insulating base.