The DNF1900-T0220 from Mercury Systems is a RF & Microwave Circulator with Frequency 2.1 to 2.4 GHz, Bandwidth 301 MHz, Average Power Forward 100 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Drop-in Circulator. More details for DNF1900-T0220 can be seen below.