The D4I2004 from DiTom Microwave is a RF & Microwave Isolator with Frequency 20 to 40 GHz, Average Power 5 W, Average Power Forward 5 W, Average Power Reverse 2 W, Peak Power Forward 0.03 kW. Tags: Module with Connector, Coaxial Isolator. More details for D4I2004 can be seen below.