The MRF3.3S from Pico Electronics is a DC to DC Converter with Input Voltage 8 to 24 V, Output Voltage 1 3.3 V, Output Current 1 0.05 to 0.53 A, Output Power 1750 mW, Operating Temperature -55 to 85 Degree C. Tags: Through Hole, Buck/Step Down. More details for MRF3.3S can be seen below.