The TRN 3-1223SM from Traco Power is a DC to DC Converter with Input Voltage 9 to 18 V, Output Voltage 1 15 V, Output Current 1 0.1 A, Output Power 3 W, Output Voltage 2 -15 V. Tags: Surface Mount, Buck-Boost. More details for TRN 3-1223SM can be seen below.