The T-128K02 from Mercury Systems is a RF & Microwave Isolator with Frequency 28 to 28 GHz, Average Power 0.5 W, Average Power Forward 0.5 W, Peak Power Forward 2 W, Insertion Loss 0.8 dB. Tags: Module with Connector, Coaxial Isolator. More details for T-128K02 can be seen below.