The 991-135164-901 from M2 Global Technology is a RF & Microwave Isolator with Frequency 13.5 to 16.4 GHz, Average Power Forward 5 W, Average Power Reverse 3 W, Insertion Loss 0.5 dB, Isolation 18 dB. Tags: Drop-In, Drop-In Isolator. More details for 991-135164-901 can be seen below.