The 991-202212-091 from M2 Global Technology is a RF & Microwave Isolator with Frequency 20.2 to 21.2 GHz, Average Power Forward 10 W, Average Power Reverse 1 W, Insertion Loss 0.5 dB, Isolation 19 dB. Tags: Drop-In, Drop-In Isolator. More details for 991-202212-091 can be seen below.