The COI08100423G from Cernex Inc is a RF & Microwave Isolator with Frequency 8.7 to 10.4 GHz, Average Power Forward 10 W, Insertion Loss 0.4 dB, Isolation 23 dB, Operating Temperature -40 to 85 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for COI08100423G can be seen below.