The TMR 3-2412E from Traco Power is a DC to DC Converter with Input Voltage 18 to 36 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/Step down. More details for TMR 3-2412E can be seen below.