The MCW03-12D05 from Total Power International is a DC to DC Converter with Input Voltage 9 to 18 V, Output Voltage 1 5 V, Output Current 1 75 to 300 mA, Output Power 3000 mW, Output Voltage 2 -5 V. Tags: Through Hole, Buck/Step down. More details for MCW03-12D05 can be seen below.