The COI10150520G1 from Cernex Inc is a RF & Microwave Isolator with Frequency 10 to 15 GHz, Average Power Forward 5 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 COI10150520G1 can be seen below.