The RFSL8954 from RF-CI is a RF & Microwave Isolator with Frequency 3 to 6 GHz, Average Power Forward 50 W, Average Power Reverse 20 W, Peak Power Forward 0.5 kW, Insertion Loss 0.5 to 0.7 dB. Tags: Module with Connector, Coaxial Isolator. More details for RFSL8954 can be seen below.