The JIM4900T5900VM0R from JQL Electronics is a RF & Microwave Isolator with Frequency 4.9 to 5.9 GHz, Average Power Forward 5 W, Average Power Reverse 5 W, Insertion Loss 0.5 dB, Isolation 19 dB. Tags: Surface Mount, Surface Mount Isolator. More details for JIM4900T5900VM0R can be seen below.