Abstract: Provided is a semiconductor device that is easily controlled. The semiconductor device includes a first switching device and a second switching device that are connected in series between a first potential and a second potential lower than the first potential, wherein each of the first and second switching devices includes a transistor region, and a diode region electrically connected in anti-parallel to the transistor region, the transistor region includes a first gate controlled by a first gate signal, and the diode region includes a diode gate controlled by a diode gate signal.

Abstract: An optical transceiver includes an optical component (3) whose ground is integrated with a signal ground. The optical transceiver includes a conductor (51) that is electrically connected to the optical component (3), and a sheet-like insulator (52) disposed between the conductor (51) and a housing (1) such that a main surface thereof is positioned along an inner wall of the housing (1), and separating the signal ground and a frame ground on the side of the housing (1) from each other.

Abstract: An optical transceiver includes an optical component (3) whose ground is integrated with a signal ground. The optical transceiver includes a conductor (51) that is electrically connected to the optical component (3), and a sheet-like insulator (52) disposed between the conductor (51) and a housing (1) such that a main surface thereof is positioned along an inner wall of the housing (1), and separating the signal ground and a frame ground on the side of the housing (1) from each other.