Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C4S12RS4D3 found under Power Supply by Tdk Lambda Americas Inc. The National Stock Number assigned to this part is 6130010933038, and the Federal Supply Class is 6130 Converters Electrical Non Rotating. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like C4S12RS4D3.