The RFCR5839D from RF-CI is a RF & Microwave Circulator with Frequency 3.1 to 3.55 GHz, Average Power Forward 30 W, Average Power Reverse 30 W, Peak Power Forward 500 W, Insertion Loss 0.3 to 0.35 dB. Tags: Surface Mount, Surface Mount Circulator. More details for RFCR5839D can be seen below.