The DNF1900-T0245 from Mercury Systems is a RF & Microwave Circulator with Frequency 2.7 to 3.1 GHz, Bandwidth 401 MHz, Average Power Forward 20 W, Peak Power 200 W, Insertion Loss 0.5 dB. Tags: Drop-in Circulator. More details for DNF1900-T0245 can be seen below.