The T1821/DB from Smiths Interconnect is a RF & Microwave Isolator with Frequency 1.8 to 2.1 GHz, Average Power Forward 125 W, Average Power Reverse 1 W, Peak Power Forward 1 kW, Insertion Loss 0.5 dB. Tags: Module with Connector, Coaxial Isolator. More details for T1821/DB can be seen below.