The TMDC 40-4812 from Traco Power is a DC to DC Converter with Input Voltage 18 to 75 V, Output Voltage 1 12 V, Output Current 1 3.33 A, Output Power 40 W, Isolation Voltage 2.5 kV. Tags: Chassis Mount, Buck/Step down. More details for TMDC 40-4812 can be seen below.