The RFCR8401 from RF-CI is a RF & Microwave Circulator with Frequency 1 to 2 GHz, Average Power Forward 50 W, Average Power Reverse 50 W, Peak Power 500 W, Insertion Loss 0.5 to 0.7 dB. Tags: Drop-in Circulator. More details for RFCR8401 can be seen below.