The COI01030423G-XX from Cernex Inc is a RF & Microwave Isolator with Frequency 1.8 to 3 GHz, Bandwidth 400 MHz, Average Power Forward 10 W, Insertion Loss 0.4 dB, Isolation 23 dB. Tags: Module with Connector, Coaxial Isolator. More details for COI01030423G-XX can be seen below.