The JCD2500T2800S1 from JQL Electronics is a RF & Microwave Circulator with Frequency 2.5 to 2.8 GHz, Average Power Forward 10 W, Insertion Loss 0.5 dB, Isolation 20 dB, Operating Temperature -40 to 80 Degree C. Tags: Drop-in Circulator. More details for JCD2500T2800S1 can be seen below.