The TMU 3-2412 from Traco Power is a DC to DC Converter with Input Voltage 21.6 to 26.4 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 TMU 3-2412 can be seen below.