The OKI-78SR-12/1.0-W36-C from Murata is a DC to DC Converter with Input Voltage 15 to 36 V, Output Voltage 1 12 V, Output Current 1 1000 mA, Operating Temperature -40 to 85 Degree C, Storage Temperature -55 to 125 Degree C. Tags: Through Hole, Buck/Step down. More details for OKI-78SR-12/1.0-W36-C can be seen below.