A semiconductor device includes a semiconductor element, a first lead supporting the semiconductor element, a second lead separated from the first lead, and a connection lead electrically connecting the semiconductor element to the second lead. The connection lead has an end portion soldered to the second lead. This connection-lead end portion has a first surface facing the semiconductor element and a second surface opposite to the first surface. The second lead is formed with a recess that is open toward the semiconductor element. The recess has a side surface facing the second surface of the connection-lead end portion. A solder contact area of the second surface of the connection-lead end portion is larger than a solder contact area of the first surface of the connection-lead end portion.