The MCWI03-12D12 from Total Power International is a DC to DC Converter with Input Voltage 4.5 to 18 V, Output Voltage 1 12 V, Output Current 1 31 to 125 mA, Output Power 3000 mW, Output Voltage 2 -12 V. Tags: Through Hole, Buck-Boost. More details for MCWI03-12D12 can be seen below.