A lead frame which is disposed in an outer package is composed of three members. The lead frame is provided with contact electrodes, connector terminals, and conductive interconnections which are connected to the respective connector terminals. The arrangement order of the contact electrodes is such that contact electrodes are connected to the connector terminals, respectively; that is, the arrangement direction of the contact electrodes is the same as that of the connector terminals. On the other hand, the arrangement order of the contact electrodes is such that contact electrodes are connected to the connector terminals, respectively, that is, the arrangement direction of the contact electrodes is opposite to that of the connector terminals. Lead terminals of a resin cell package are connected to the contact electrodes.