The T-2S74U-20 from Teledyne Microwave Solutions is a RF & Microwave Isolator with Frequency 2 to 4.5 GHz, Average Power Forward 50 W, Average Power Reverse 2 W, Insertion Loss 1.2 dB, Isolation 32 dB. Tags: Module with Connector, Coaxial Isolator. More details for T-2S74U-20 can be seen below.