The RS-053.3D 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 1 250 mA, Output Power 2000 mW, Output Voltage 2 -3.3 V. Tags: Through Hole, Buck/Step down. More details for RS-053.3D can be seen below.