The SFI1822 from Fairview Microwave is a RF & Microwave Isolator with Frequency 17.3 to 22 GHz, Average Power Forward 10 W, Average Power Reverse 2 W, Peak Power Forward 0.03 kW, Insertion Loss 0.5 dB. Tags: Module with Connector, Coaxial Isolator. More details for SFI1822 can be seen below.