The 3834-S12 from Modular Devices is a DC to DC Converter with Input Voltage 9 to 20 V, Output Voltage 1 11.8 to 12.2 V, Output Current 1 0.017 A, Output Power 2000 mW, Isolation Voltage 500 Vdc. Tags: Through Hole. More details for 3834-S12 can be seen below.