The RFSL8961 from RF-CI is a RF & Microwave Isolator with Frequency 3.6 to 8.6 GHz, Average Power Forward 30 W, Average Power Reverse 20 W, Peak Power Forward 0.5 kW, Insertion Loss 0.6 to 0.7 dB. Tags: Module with Connector, Coaxial Isolator. More details for RFSL8961 can be seen below.