The RSO-0509D/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 56 mA, Output Power 1000 mW, Output Voltage 2 -9 V. Tags: Through Hole, Boost/Step Up. More details for RSO-0509D/H3 can be seen below.