The RDDW40F-12 from Mean Well is a DC to DC Converter with Input Voltage 9 to 36 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-Boost. More details for RDDW40F-12 can be seen below.