The 36E0503S-2WR2 from Ideal Power Ltd is a DC to DC Converter with Input Voltage 4.5 to 5. 5 V, Output Voltage 1 3.3 V, Output Current 1 30 to 303 mA, Output Power 2000 mW, Output Voltage 2 -3.3 V. Tags: Through Hole, Buck/Step down. More details for 36E0503S-2WR2 can be seen below.