The TDN 3-1215WISM from Traco Power is a DC to DC Converter with Input Voltage 4.5 to 18 V, Output Voltage 1 24 V, Output Current 1 0.125 A, Output Power 3 W, Isolation Voltage 1.6 kV. Tags: Surface Mount, Boost/Step Up. More details for TDN 3-1215WISM can be seen below.