The IS-20 from MCLI is a RF & Microwave Isolator with Frequency 5 to 10 GHz, Average Power Forward 1 W, Insertion Loss 0.5 dB, Isolation 17 dB, Operating Temperature 0 to 55 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for IS-20 can be seen below.