The JIS11K9T12K2G0 from JQL Electronics is a RF & Microwave Isolator with Frequency 11.9 to 12.2 GHz, Average Power Forward 5 W, Average Power Reverse 0.5 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Microstrip, Microstrip Isolator. More details for JIS11K9T12K2G0 can be seen below.