The TMR 3-1212E from Traco Power is a DC to DC Converter with Input Voltage 9 to 18 V, Output Voltage 1 12 V, Output Current 1 0.25 A, Output Power 3 W, Isolation Voltage 1.5 kV. Tags: Through Hole, Buck-Boost. More details for TMR 3-1212E can be seen below.