The T-1S13U-40 from Teledyne Microwave Solutions is a RF & Microwave Isolator with Frequency 1.9 to 2.3 GHz, Average Power Forward 50 W, Average Power Reverse 2 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for T-1S13U-40 can be seen below.