The JIM2900T3100S1R from JQL Electronics is a RF & Microwave Isolator with Frequency 2.9 to 3.1 GHz, Average Power Forward 60 W, Average Power Reverse 5 W, Insertion Loss 0.35 dB, Isolation 20 dB. Tags: Surface Mount, Surface Mount Isolator. More details for JIM2900T3100S1R can be seen below.