The 431T Series from Teledyne Relays is a RF Relay with Frequency 10 MHz to 1 GHz, Coil Voltage 5.0 to 45.0 V, Voltage 3.6 to 19.0 V (Pick-up Voltage), 0.15 to 10.4 V (Drop-out Voltage), Current 5.7 to 47.8 mA, Power 150 mW. Tags: TO-5. More details for 431T Series can be seen below.