The CMB355370CS from 3Rwave is a RF & Microwave Circulator with Frequency 3.55 to 3.7 GHz, Average Power Forward 80 W, Insertion Loss 0.25 to 0.32 dB, Isolation 22 to 25 dB, Return Loss 22 to 25 dB. Tags: Surface Mount Circulator. More details for CMB355370CS can be seen below.