The JIM4000T5000VM0R from JQL Electronics is a RF & Microwave Isolator with Frequency 4 to 5 GHz, Average Power Forward 5 W, Average Power Reverse 1 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Surface Mount, Surface Mount Isolator. More details for JIM4000T5000VM0R can be seen below.