The 991-109127-091 from M2 Global Technology is a RF & Microwave Isolator with Frequency 10.9 to 12.75 GHz, Average Power Forward 10 W, Average Power Reverse 3 W, Insertion Loss 0.8 dB, Isolation 16 dB. Tags: Drop-In, Drop-In Isolator. More details for 991-109127-091 can be seen below.