The TMR 12-4810WI from Traco Power is a DC to DC Converter with Input Voltage 18 to 75 V, Output Voltage 1 3.3 V, Output Current 1 3 A, Output Power 12 W, Isolation Voltage 1.6 kV. Tags: Through Hole, Buck/Step down. More details for TMR 12-4810WI can be seen below.