The COI08120520G from Cernex Inc is a RF & Microwave Isolator with Frequency 8 to 12 GHz, Average Power Forward 10 W, Insertion Loss 0.5 dB, Isolation 20 dB, Operating Temperature -30 to 70 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for COI08120520G can be seen below.
