The TEC 2-1221WI from Traco Power is a DC to DC Converter with Input Voltage 4.5 to 18 V, Output Voltage 1 5 V, Output Current 1 0.2 A, Output Power 2 W, Output Voltage 2 -5 V. Tags: Through Hole, Buck-Boost. More details for TEC 2-1221WI can be seen below.