The CHB211217AS from 3Rwave is a RF & Microwave Circulator with Frequency 2110 to 2170 MHz, Average Power Forward 200 W, Insertion Loss 0.15 to 0.2 dB, Isolation 25 to 26 dB, Return Loss 25 to 26 dB. Tags: Surface Mount Circulator. More details for CHB211217AS can be seen below.