The V78E03-500-SMT-TR from CUI is a DC to DC Converter with Input Voltage 4.75 to 36 V, Output Voltage 1 3.3 V, Output Current 1 500 mA, Output Power 1650 mW, Isolation Voltage 0 VDC. Tags: Surface Mount, Buck/Step down. More details for V78E03-500-SMT-TR can be seen below.