The DNF1900-T0302 from Mercury Systems is a RF & Microwave Circulator with Frequency 3.3 to 3.9 GHz, Bandwidth 601 MHz, Average Power Forward 10 W, Peak Power 100 W, Insertion Loss 0.5 dB. Tags: Drop-in Circulator. More details for DNF1900-T0302 can be seen below.