The THN 20-1211 from Traco Power is a DC to DC Converter with Input Voltage 9 to 18 V, Output Voltage 1 5 V, Output Current 1 4 A, Output Power 20 W, Isolation Voltage 1.5 kV. Tags: Through Hole, Buck/Step down. More details for THN 20-1211 can be seen below.