The T-318S01 from Mercury Systems is a RF & Microwave Isolator with Frequency 18 to 26.5 GHz, Bandwidth 8500 MHz, Average Power 0.5 W, Average Power Forward 0.5 W, Peak Power Forward 2 W. Tags: Module with Connector, Coaxial Isolator. More details for T-318S01 can be seen below.