The RFCR2876 from RF-CI is a RF & Microwave Circulator with Frequency 4.4 to 5 GHz, Average Power Forward 35 W, Average Power Reverse 50 W, Peak Power 500 W, Insertion Loss 0.3 to 0.35 dB. Tags: Drop-in Circulator. More details for RFCR2876 can be seen below.