The JCM3300T3800S6R from JQL Electronics is a RF & Microwave Circulator with Frequency 3.3 to 3.8 GHz, Average Power Forward 60 W, Insertion Loss 0.5 dB, Isolation 18 dB, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount Circulator. More details for JCM3300T3800S6R can be seen below.