The RDDW40G-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 0 to 1666 mA, Output Power 40000 mW, Output Voltage 2 -12 V. Tags: Through Hole, Buck/Step down. More details for RDDW40G-12 can be seen below.