The PXF40-12S12 from TDK Corporation is a DC to DC Converter with Input Voltage 9 to 18 V, Output Voltage 1 12 V, Output Current 1 3333 mA, Output Power 40000 mW, Operating Temperature -40 to 100 Degree C. Tags: Through Hole, Buck-Boost. More details for PXF40-12S12 can be seen below.