The DCF1900-T0120 from Mercury Systems is a RF & Microwave Isolator with Frequency 1.81 to 1.88 GHz, Average Power 100 W, Average Power Forward 125 W, Average Power Reverse 50 W, Peak Power Forward 1000 W. Tags: Drop-In, Drop-In Isolator. More details for DCF1900-T0120 can be seen below.