The RFCR5858 from RF-CI is a RF & Microwave Circulator with Frequency 2.9 to 3.1 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 RFCR5858 can be seen below.