The RDHA710SE10A2FK is a radiation hardened dual solid-state relay in a hermetic package. It is configured as a dual, single-pole-single-throw (SPST) normally open relay with common input supply. This device is characterized for 100 krad(Si) total ionizing dose and neutron fluence level of 1.8E12 n/cm2. The input and output MOSFETs utilize International Rectifier's R5 technology. T h e RDHA710SE10A2FK is optically coupled and actuated by standard logic inputs.