The DNF2540-T0125 from Mercury Systems is a RF & Microwave Isolator with Frequency 1.6 to 1.66 GHz, Average Power 1 W, Average Power Forward 1 W, Peak Power Forward 100 W, Insertion Loss 0.3 dB. Tags: Drop-In, Drop-In Isolator. More details for DNF2540-T0125 can be seen below.