The RFCR3912 from RF-CI is a RF & Microwave Circulator with Frequency 5 to 6 GHz, Average Power Forward 50 W, Average Power Reverse 35 W, Peak Power 500 W, Insertion Loss 0.40 to 0.50 dB. Tags: Coaxial Circulator. More details for RFCR3912 can be seen below.