The COCU8010520G-XX from Cernex Inc is a RF & Microwave Circulator with Frequency 800 MHz to 1.2 GHz, Bandwidth 200 MHz, Average Power Forward 100 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Coaxial Circulator. More details for COCU8010520G-XX can be seen below.