The RFCR2727S from RF-CI is a RF & Microwave Circulator with Frequency 2.01 to 2.3 GHz, Average Power Forward 100 W, Average Power Reverse 100 W, Peak Power 500 W, Insertion Loss 0.25 to 0.4 dB. Tags: Surface Mount Circulator. More details for RFCR2727S can be seen below.