The RW-4809S/SMD from Recom Power is a DC to DC Converter with Input Voltage 36 to 72 V, Output Voltage 1 9 V, Output Current 1 333 mA, Output Power 3000 mW, Operating Temperature -40 to 80 Degree C. Tags: Through Hole, Buck/Step down. More details for RW-4809S/SMD can be seen below.