The JIC5900T10K6S1R from JQL Electronics is a RF & Microwave Isolator with Frequency 5.9 to 10.6 GHz, Average Power Forward 10 W, Average Power Reverse 1 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for JIC5900T10K6S1R can be seen below.