The MEE1S0503DC from Murata is a DC to DC Converter with Input Voltage 4.5 to 5.5 V, Output Voltage 1 3.3 V, Output Current 1 303 mA, Output Power 1 W, Isolation Voltage 1000 V. Tags: Through Hole, Buck/Step down. More details for MEE1S0503DC can be seen below.