The AEE04F18-LS from Artesyn Embedded Power is a DC to DC Converter with Input Voltage 9 to 36 V, Output Voltage 1 3.3 V, Output Current 1 4 A, Output Power 13.2 W, Isolation Voltage 1.5 kV. Tags: Through Hole, Buck/Step down. More details for AEE04F18-LS can be seen below.