The TMR 4-1212 from Traco Power is a DC to DC Converter with Input Voltage 9 to 18 V, Output Voltage 1 12 V, Output Current 1 0.333 A, Output Power 4 W, Isolation Voltage 1.6 kV. Tags: Through Hole, Buck-Boost. More details for TMR 4-1212 can be seen below.