The JIM4400T5000VM1 from JQL Electronics is a RF & Microwave Isolator with Frequency 4.4 to 5 GHz, Average Power Forward 20 W, Average Power Reverse 10 W, Insertion Loss 0.35 dB, Isolation 18 dB. Tags: Surface Mount, Surface Mount Isolator. More details for JIM4400T5000VM1 can be seen below.