The SMP12028S from Crane Aerospace & Electronics is a DC to DC Converter with Input Voltage 80 to 160 V, Output Voltage 1 27.4 to 28.6 V, Output Current 1 1.75 A, Output Power 49 W, Power Consumption 5 to 12 W (Dissipation). Tags: Surface Mount. More details for SMP12028S can be seen below.