The JIC17K7T21K2SMSF0 from JQL Electronics is a RF & Microwave Isolator with Frequency 17.7 to 21.2 GHz, Average Power Forward 1 W, Average Power Reverse 1 W, Insertion Loss 0.5 dB, Isolation 18 dB. Tags: Module with Connector, Coaxial Isolator. More details for JIC17K7T21K2SMSF0 can be seen below.