The IA31003500P3KS from Smiths Interconnect is a RF & Microwave Isolator with Frequency 3.1 to 3.5 GHz, Average Power Reverse Up to 150 W, Peak Power Forward 3 kW, Insertion Loss 0.3 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for IA31003500P3KS can be seen below.