The COCU6010420G-XX from Cernex Inc is a RF & Microwave Circulator with Frequency 600 MHz to 1 GHz, Bandwidth 200 MHz, Average Power Forward 150 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Coaxial Circulator. More details for COCU6010420G-XX can be seen below.