The DNF1900-T0130 from Mercury Systems is a RF & Microwave Circulator with Frequency 1.71 to 1.86 GHz, Bandwidth 151 MHz, Average Power Forward 1 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Drop-in Circulator. More details for DNF1900-T0130 can be seen below.