The 53266 DC solid state relay (SSR) is designed for high temperature applications. This device is resistant to damage from severe shock and vibration, and is immune to contact related problems inherent in electromechanical relays. The SSR is enclosed in a hermetic metal package to ensure reliability in harsh environments. Effective isolation of 600 VRMS between control and load circuits is achieved through the use of optical coupling. Functionally, the device operates as a single-pole single-throw, normally open (1 Form A) DC solid-state relay. The SSR is actuated by an input current of 3 to 15 mA, which can be supplied from standard logic types such as open-collector TTL. Output is provided by a power MOSFET capable of carrying a continuous current of 6 amperes.