The PAF450F280-28 from TDK Corporation is a DC to DC Converter with Input Voltage 200 to 400 V, Output Voltage 1 28 V, Output Current 1 16500 mA, Output Power 462000 mW, Operating Temperature -40 to 100 Degree C. Tags: Through Hole, Buck/Step down. More details for PAF450F280-28 can be seen below.