The SPS3H48S12 from Calex Manufacturing is a DC to DC Converter with Input Voltage 36 to 75 V, Output Voltage 1 12 V, Output Current 1 250 mA, Output Power 3 W, Isolation Voltage 1.6 kV. Tags: Through Hole, Buck/Step down. More details for SPS3H48S12 can be seen below.