The CCDU4U50323G-XX from Cernex Inc is a RF & Microwave Circulator with Frequency 400 to 500 MHz, Bandwidth 30 MHz, Average Power Forward 150 W, Insertion Loss 0.3 dB, Isolation 23 dB. Tags: Drop-In, Drop-in Circulator. More details for CCDU4U50323G-XX can be seen below.