ITEM NAME:XL4016E1 DC 4-40V to DC 1.25-36V 8A Buck Converter Voltage Regulator QDW ZQU Descriptio n Description: Working Temperature: Standard.When The Maximum Output Current Of 8A Is Reached, A Fan Needs To Be Added. Match 3: DC Buck Converter. Match 7: Dc Dc Buck. Buck Converter Adjustable Step Down Power Module 200W 8A DC-DC 4V-40V to 1.2-36V.