The DNF1900-T0140 from Mercury Systems is a RF & Microwave Isolator with Frequency 1.85 to 1.991 GHz, Average Power 1 W, Average Power Forward 1 W, Peak Power Forward 1 W, Insertion Loss 0.4 dB max.. Tags: Drop-In, Drop-In Isolator. More details for DNF1900-T0140 can be seen below.