The RSDW40G-12 from Mean Well is a DC to DC Converter with Input Voltage 18 to 75 V, Output Voltage 1 12 V, Output Current 1 3333 mA, Output Power 40000 mW, Operating Temperature -40 to 90 Degree C. Tags: Through Hole, Buck/Step down. More details for RSDW40G-12 can be seen below.