The TDR 3WI Series from Traco Power is a DC to DC Converter with Input Voltage 4.5 to 75 V, Output Voltage 1 5 to 15 V, Output Current 1 0.1 to 0.6 A, Output Power 3 W, Output Voltage 2 -15 to -12 V. Tags: Through Hole. More details for TDR 3WI Series can be seen below.