The RS3-0509S/H3 from Recom Power is a DC to DC Converter with Input Voltage 4.5 to 9 V, Output Voltage 1 9 V, Output Current 1 333 mA, Output Power 3000 mW, Operating Temperature -40 to 71 Degree C. Tags: Through Hole, Boost/Step Up. More details for RS3-0509S/H3 can be seen below.