The RFCR5816 from RF-CI is a RF & Microwave Circulator with Frequency 3.1 to 3.3 GHz, Average Power Forward 80 W, Average Power Reverse 100 W, Peak Power 500 W, Insertion Loss 0.25 to 0.3 dB. Tags: Surface Mount Circulator. More details for RFCR5816 can be seen below.