The T-5S53U-10 from Teledyne Microwave Solutions is a RF & Microwave Isolator with Frequency 5.8 to 10.6 GHz, Average Power Forward 50 W, Average Power Reverse 2 W, Insertion Loss 0.4 dB, Isolation 17 dB. Tags: Module with Connector, Coaxial Isolator. More details for T-5S53U-10 can be seen below.