The TES 2-0510H from Traco Power is a DC to DC Converter with Input Voltage 4.5 to 5.5 V, Output Voltage 1 3.3 V, Output Current 1 0.5 A, Output Power 2 W, Isolation Voltage 1.5 kV. Tags: Surface Mount, Buck/Step down. More details for TES 2-0510H can be seen below.