The RW2-123.3D/H3 from Recom Power is a DC to DC Converter with Input Voltage 9 to 18 V, Output Voltage 1 3.3 V, Output Power 2000 mW, Output Voltage 2 -3.3 V, Operating Temperature -40 to 85 Degree C. Tags: Through Hole, Buck/Step down. More details for RW2-123.3D/H3 can be seen below.