The RAC03-3.3SER/277 from Recom Power is a AC to DC Converter with AC Input Voltage 100 to 277 V, DC Output Voltage 3.3 V, DC Output Current 0.9 A, DC Output Power 3 W, Line Regulation Voltage ±0.7% to ±1%. Tags: Through Hole. More details for RAC03-3.3SER/277 can be seen below.