The 991-100117-201 from M2 Global Technology is a RF & Microwave Isolator with Frequency 10 to 11.7 GHz, Average Power Forward 10 W, Average Power Reverse 5 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for 991-100117-201 can be seen below.