The CFB057065AS from 3Rwave is a RF & Microwave Circulator with Frequency 575 to 655 MHz, Average Power Forward 50 W, Insertion Loss 0.25 to 0.3 dB, Isolation 20 to 22 dB, Return Loss 20 to 22 dB. Tags: Surface Mount Circulator. More details for CFB057065AS can be seen below.