The JIC3000T5000FS1 from JQL Electronics is a RF & Microwave Isolator with Frequency 3 to 5 GHz, Average Power Forward 25 W, Average Power Reverse 1 W, Insertion Loss 0.5 dB, Isolation 19 dB. Tags: Module with Connector, Coaxial Isolator. More details for JIC3000T5000FS1 can be seen below.