The JCC11K4T12K8S1 from JQL Electronics is a RF & Microwave Circulator with Frequency 11.45 to 12.75 GHz, Average Power Forward 10 W, Insertion Loss 0.3 dB, Isolation 23 dB, Operating Temperature -40 to 75 Degree C. Tags: Coaxial Circulator. More details for JCC11K4T12K8S1 can be seen below.
