The RF303 Series from Teledyne Relays is a RF Relay with Frequency DC to 3 GHz, Coil Voltage 5.0 to 12.0 V, Voltage 3.6 to 9.0 V (Pick-up Voltage), Current 11.7 to 78.1 mA, Power 169 to 250 mW. Tags: TO-5. More details for RF303 Series can be seen below.