The MIW1021 from Total Power International is a DC to DC Converter with Input Voltage 9 to 18 V, Output Voltage 1 3.3 V, Output Current 1 60 to 600 mA, Output Power 3000 mW, Operating Temperature -25 to 85 Degree C. Tags: Through Hole, Buck/Step down. More details for MIW1021 can be seen below.