The COI01020420G1-XX from Cernex Inc is a RF & Microwave Isolator with Frequency 1.2 to 2.7 GHz, Bandwidth 200 MHz, Average Power Forward 100 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for COI01020420G1-XX can be seen below.