The COI12180620G from Cernex Inc is a RF & Microwave Isolator with Frequency 12 to 18 GHz, Average Power Forward 5 W, Insertion Loss 0.6 dB, Isolation 20 dB, Operating Temperature -30 to 70 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for COI12180620G can be seen below.