The THD 12WI Series from Traco Power is a DC to DC Converter with Input Voltage 9 to 75 V, Output Voltage 1 3.3 to 15 V, Output Current 1 0.4 to 3.5 A, Output Power 12 W, Output Voltage 2 -15 to -5 V. Tags: Through Hole. More details for THD 12WI Series can be seen below.