Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number U169E504X147 found under Semiconductor Devic by Siemens Schweiz Ag. The National Stock Number assigned to this part is 5961121666500, and the Federal Supply Class is 5961 Semiconductor Devices And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like U169E504X147.