The MFK283R3S from Crane Aerospace & Electronics is a DC to DC Converter with Input Voltage 16 to 50 V, Output Voltage 1 3.3 V, Output Current 1 4.55 A, Output Power 15000 mW, Isolation Voltage 500 Vdc. Tags: Module, Buck/Step down. More details for MFK283R3S can be seen below.