The COI20300620D from Cernex Inc is a RF & Microwave Isolator with Frequency 20 to 30 GHz, Average Power Forward 30 W, Insertion Loss 0.7 dB, Isolation 18 dB, Operating Temperature -20 to 65 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for COI20300620D can be seen below.