The 991-102104-851 from M2 Global Technology is a RF & Microwave Isolator with Frequency 1.02 to 1.04 GHz, Average Power Forward 150 W, Average Power Reverse 100 W, Insertion Loss 0.25 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for 991-102104-851 can be seen below.