The CKB250270CS from 3Rwave is a RF & Microwave Circulator with Frequency 2.5 to 2.7 GHz, Average Power Forward 120 W, Insertion Loss 0.27 to 0.32 dB, Isolation 22 to 25 dB, Return Loss 22 to 25 dB. Tags: Surface Mount Circulator. More details for CKB250270CS can be seen below.