The TMK12H48S12 from Calex Manufacturing is a DC to DC Converter with Input Voltage 9 to 36 V, Output Voltage 1 12 V, Output Current 1 1000 mA, Output Power 12 W, Isolation Voltage 1.5 kV. Tags: Through Hole, Buck/Step down. More details for TMK12H48S12 can be seen below.