The T-3S63U-20 from Teledyne Microwave Solutions is a RF & Microwave Isolator with Frequency 3.5 to 7 GHz, Average Power Forward 50 W, Average Power Reverse 2 W, Insertion Loss 0.5 dB, Isolation 17 dB. Tags: Module with Connector, Coaxial Isolator. More details for T-3S63U-20 can be seen below.