The DNF1900-T0200 from Mercury Systems is a RF & Microwave Circulator with Frequency 2.87 to 3.17 GHz, Bandwidth 301 MHz, Average Power Forward 20 W, Peak Power 200 W, Insertion Loss 0.6 dB. Tags: Drop-in Circulator. More details for DNF1900-T0200 can be seen below.