The TMH40H12S12 from Calex Manufacturing is a DC to DC Converter with Input Voltage 9 to 18 V, Output Voltage 1 12 V, Output Current 1 3330 mA, Output Power 40 W, Isolation Voltage 1.5 kV. Tags: Through Hole, Buck-Boost. More details for TMH40H12S12 can be seen below.