The SMF635-F2103 from Mercury Systems is a RF & Microwave Circulator with Frequency 21.2 to 23.6 GHz, Average Power 0.5 W, Average Power Forward 5 W, Average Power Reverse 0.5 W, Peak Power 5 W. Tags: Drop-in Circulator. More details for SMF635-F2103 can be seen below.