The RS3-053.3S from Recom Power is a DC to DC Converter with Input Voltage 4.5 to 9 V, Output Voltage 1 3.3 V, Output Current 1 600 mA, Output Power 3000 mW, Operating Temperature -40 to 71 Degree C. Tags: Through Hole, Buck/Step down. More details for RS3-053.3S can be seen below.