The 53819 from Modular Devices is a Space Qualified Solid-State Relay with a maximum contact voltage rating of 300 V and a contact current rating of 5 A. This relay requires a bias input voltage of 4.7-5.3 V DC and a bias current of 30-50 mA. It has a contact resistance of 0.3-0.8 Ohms and a maximum power dissipation of up to 8 W. The relay has a radiation tolerance TID of up to 45 Krads and a SEE LET of up to 82 MeV cm2/mg. It uses wide band gap semiconductors for low resistance and features magnetically coupled commands for fast response. The relay has a mass of 32 g and comes in a rugged hermetic package.