The COI02040618G from Cernex Inc is a RF & Microwave Isolator with Frequency 2 to 4 GHz, Average Power Forward 10 W, Insertion Loss 0.6 dB, Isolation 18 dB, Operating Temperature -30 to 70 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for COI02040618G can be seen below.