The RFSL2531S from RF-CI is a RF & Microwave Isolator with Frequency 1.805 to 1.88 GHz, Average Power Forward 80 W, Average Power Reverse 20 W, Peak Power Forward 0.5 kW, Insertion Loss 0.22 to 0.3 dB. Tags: Surface Mount, Surface Mount Isolator. More details for RFSL2531S can be seen below.