The JIC12K0T20K0S1 from JQL Electronics is a RF & Microwave Isolator with Frequency 12 to 20 GHz, Average Power Forward 10 W, Insertion Loss 0.6 dB, Isolation 18 dB, Operating Temperature -30 to 70 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for JIC12K0T20K0S1 can be seen below.