The 991-162166-301 from M2 Global Technology is a RF & Microwave Isolator with Frequency 1.62 to 1.66 GHz, Average Power Forward 100 W, Average Power Reverse 10 W, Insertion Loss 0.3 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for 991-162166-301 can be seen below.