The PVT412PBF is a HEXFET® thru-hole power MOSFET Photovoltaic Relay with no current limiting circuitry and offers lower on-state resistance. This photovoltaic relay is a single-pole, normally open solid-state relay that can replace electromechanical relays in many applications. It utilizes international rectifiers proprietary HEXFET power MOSFET as the output switch, driven by an integrated circuit photovoltaic generator of novel construction. The output switch is controlled by radiation from a GaAlAs light emitting diode (LED) which is optically isolated from the photovoltaic generator. It is specifically designed for worldwide telecom applications.