The R1M-483.3S/SMD from Recom Power is a DC to DC Converter with Input Voltage 18 to 75 V, Output Voltage 1 3.3 V, Output Current 1 0.3 A, Output Power 1 W, Isolation Voltage 1.6 kV. Tags: Surface Mount, Buck/Step down. More details for R1M-483.3S/SMD can be seen below.