The JCD3300T3800G2 from JQL Electronics is a RF & Microwave Circulator with Frequency 3.3 to 3.8 GHz, Average Power Forward 20 W, Insertion Loss 0.3 dB, Isolation 20 dB, Operating Temperature -40 to 75 Degree C. Tags: Drop-in Circulator. More details for JCD3300T3800G2 can be seen below.