The RDHA720SF06A1NK is a 60V 20A rad hard solid state relay with a single-pole-single-throw (SPST) normally open configuration in a 8-pin surface mount package. It has standard packaging, is characterized for 100 krad(Si) total ionizing dose and utilizes IR HiRel's R5 MOSFET technology for its input and output MOSFETs. The device is screened to MIL-PRF-38534 and is capable of operating in the harsh space environment.