The 991-180200-301 from M2 Global Technology is a RF & Microwave Isolator with Frequency 1.8 to 2 GHz, Average Power Forward 75 W, Average Power Reverse 10 W, Insertion Loss 0.3 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for 991-180200-301 can be seen below.