The CMB440500CS-RC from 3Rwave is a RF & Microwave Circulator with Frequency 4.4 to 5 GHz, Average Power Forward 100 W, Insertion Loss 0.3 to 0.35 dB, Isolation 21 to 25 dB, Return Loss 21 to 25 dB. Tags: Surface Mount Circulator. More details for CMB440500CS-RC can be seen below.