Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SMC145071 found under Case Electron Tube by Du Pont De Nemours Deutschland. The National Stock Number assigned to this part is 5960002804019, and the Federal Supply Class is 5960 Electron Tubes And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SMC145071.