The T4244/DF from Smiths Interconnect is a RF & Microwave Isolator with Frequency 4.2 to 4.4 GHz, Average Power Forward 60 W, Average Power Reverse 1 W, Peak Power Forward 0.2 kW, Insertion Loss 0.4 dB. Tags: Drop-In, Drop-In Isolator. More details for T4244/DF can be seen below.