The PAH450S48-28 from TDK Corporation is a DC to DC Converter with Input Voltage 36 to 76 V, Output Voltage 1 28 V, Output Current 1 16000 mA, Output Power 448000 mW, Operating Temperature -40 to 100 Degree C. Tags: Through Hole, Buck/Step down. More details for PAH450S48-28 can be seen below.