The SFI1826 from Fairview Microwave is a RF & Microwave Isolator with Frequency 18 to 26 GHz, Average Power Forward 1 W, Insertion Loss 0.6 dB, Isolation 17 dB, Operating Temperature -40 to 70 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for SFI1826 can be seen below.