The CMA440590AH from 3Rwave is a RF & Microwave Circulator with Frequency 4.4 to 5.9 GHz, Average Power Forward 50 W, Insertion Loss 0.4 to 0.6 dB, Isolation 16 to 18 dB, Return Loss 16 to 18 dB. Tags: Drop-in Circulator. More details for CMA440590AH can be seen below.