The SMHF4205S from Crane Aerospace & Electronics is a DC to DC Converter with Input Voltage 35 to 55 V, Output Voltage 1 4.85 to 5.15 V, Output Current 1 2.4 A, Output Power 0 to 12 W, Power Consumption 3.5 to 8 W (Dissipation). Tags: Surface Mount. More details for SMHF4205S can be seen below.