This invention provides a resin sealed IC regulator (1), which comprises a first connecting terminal (113) electrically connected to a generator, a second connecting terminal (115) electrically connected to a device other than the generator, a monolithic IC (16) which controls an operation of the generator, mounted on a conductive member (11), and connected to both the first connecting terminal and the second connecting terminal, a resin molded portion (13) of an electric insulating resin sealing the monolithic IC and at least a portion of the first and second connecting terminals (113, 114, 115) connected to the monolithic IC. Thus an IC regulator which can be effectively used with an electrical load can be obtained, and further, an IC regulator having a more reliable control performance and able to be produced at low production cost can be obtained.