The D3I4012Y from DiTom Microwave is a RF & Microwave Isolator with Frequency 4 to 12 GHz, Average Power Forward 20 W, Average Power Reverse 2 W (Reflective), Peak Power 30 W, Insertion Loss 1 dB. Tags: Module with Connector, Coaxial Isolator. More details for D3I4012Y can be seen below.