The RFCR5758 from RF-CI is a RF & Microwave Circulator with Frequency 2.11 to 2.17 GHz, Average Power Forward 50 W, Average Power Reverse 50 W, Peak Power 500 W, Insertion Loss 0.25 to 0.35 dB. Tags: Surface Mount Circulator. More details for RFCR5758 can be seen below.