A semiconductor device is provided that includes a semiconductor chip and a resin section that molds the semiconductor chip and has a first through-hole. A through electrode that is electrically coupled to the semiconductor chip, extends through the resin section, and extends between a top edge and a bottom edge of an inner surface of the first through-hole. A cavity which extends between planes corresponding to an upper surface and a lower surface of the resin section is formed inside the first through-hole.