The JIM3500T3700S1R from JQL Electronics is a RF & Microwave Isolator with Frequency 3.5 to 3.7 GHz, Average Power Forward 60 W, Average Power Reverse 5 W, Insertion Loss 0.35 dB, Isolation 21 dB. Tags: Surface Mount, Surface Mount Isolator. More details for JIM3500T3700S1R can be seen below.