The PAF500F48-12 from TDK Corporation is a DC to DC Converter with Input Voltage 36 to 76 V, Output Voltage 1 12 V, Output Current 1 42000 mA, Output Power 504000 mW, Operating Temperature -40 to 100 Degree C. Tags: Through Hole, Buck/Step down. More details for PAF500F48-12 can be seen below.