The COF-5010 from Stellant Systems is a RF & Microwave Circulator with Frequency 5 to 10 GHz, Insertion Loss 0.5 to 1 dB, Isolation 17 to 35 dB, Operating Temperature -20 to 65 Degree C. Tags: Module with Connector, Coaxial Circulator. More details for COF-5010 can be seen below.