The TDN 1-4819WI from Traco Power is a DC to DC Converter with Input Voltage 18 to 75 V, Output Voltage 1 9 V, Output Current 1 0.112 A, Output Power 1 W, Isolation Voltage 1.6 kV. Tags: Through Hole, Buck/Step down. More details for TDN 1-4819WI can be seen below.