The RFSL5811 from RF-CI is a RF & Microwave Isolator with Frequency 2.7 to 2.9 GHz, Average Power Forward 80 W, Average Power Reverse 20 W, Peak Power Forward 0.5 kW, Insertion Loss 0.25 to 0.3 dB. Tags: Surface Mount, Surface Mount Isolator. More details for RFSL5811 can be seen below.