The T042045/DB from Smiths Interconnect is a RF & Microwave Isolator with Frequency 420 to 450 MHz, Average Power Forward 60 W, Average Power Reverse 1 W, Peak Power Forward 1 kW, Insertion Loss 0.4 dB. Tags: Module with Connector, Coaxial Isolator. More details for T042045/DB can be seen below.