A semiconductor device includes a semiconductor chip 10, a connector terminal 30 electrically coupled with the semiconductor chip 10, a resin section 40 for molding the semiconductor chip 10 and the connector terminal 30 such that a lower surface of the semiconductor chip 10 opposite a surface on which a circuit 12 is formed is exposed, and a first chip 20 formed on the semiconductor chip 10 having an upper surface exposed from the resin section and a thermal expansion coefficient smaller than that of the resin section.