The JC2C5400T5900S1 from JQL Electronics is a RF & Microwave Circulator with Frequency 5.4 to 5.9 GHz, Average Power Forward 10 W, Insertion Loss 0.6 dB, Isolation 50 dB, Operating Temperature -40 to 75 Degree C. Tags: Coaxial Circulator. More details for JC2C5400T5900S1 can be seen below.