The 53821 from Modular Devices is a Space Qualified Solid State Relay with Bias Current 30 to 50 mA, Bias Voltage 4.7 to 5.3 V, Command Current 1 to 3 mA, Contact Current 15 A, Contact Resistance 0.08 to 0.2 Ohms. More details for 53821 can be seen below.