The SQ24T04120-NAC0G from Bel Fuse is a DC to DC Converter with Input Voltage 18 to 36 V, Output Voltage 1 12 V, Output Current 1 4000 mA, Output Power 48000 mW, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount, Buck/Step down. More details for SQ24T04120-NAC0G can be seen below.