The RFCR5820 from RF-CI is a RF & Microwave Circulator with Frequency 2.55 to 2.65 GHz, Average Power Forward 10 W, Average Power Reverse 30 W, Peak Power 500 W, Insertion Loss 0.25 to 0.3 dB. Tags: Surface Mount Circulator. More details for RFCR5820 can be seen below.