The DNF1900-T0310 from Mercury Systems is a RF & Microwave Isolator with Frequency 3 to 3.501 GHz, Average Power 20 W, Average Power Forward 20 W, Peak Power Forward 200 W, Insertion Loss 0.6 dB max.. Tags: Drop-In, Drop-In Isolator. More details for DNF1900-T0310 can be seen below.