The TMDC 20-4811 from Traco Power is a DC to DC Converter with Input Voltage 18 to 75 V, Output Voltage 1 5.1 V, Output Current 1 4 A, Output Power 20 W, Isolation Voltage 2.5 kV. Tags: Chassis Mount, Buck/Step down. More details for TMDC 20-4811 can be seen below.