The T2123/DD from Smiths Interconnect is a RF & Microwave Isolator with Frequency 2.1 to 2.3 GHz, Average Power Forward 60 W, Average Power Reverse 1 W, Peak Power Forward 0.1 kW, Insertion Loss 0.05 dB. Tags: Drop-In, Drop-In Isolator. More details for T2123/DD can be seen below.