The CMB211217CS from 3Rwave is a RF & Microwave Circulator with Frequency 2.11 to 2.17 GHz, Average Power Forward 150 W, Insertion Loss 0.25 to 0.3 dB, Isolation 21 to 25 dB, Return Loss 21 to 25 dB. Tags: Surface Mount Circulator. More details for CMB211217CS can be seen below.