Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number IP 1547 A found under Electron Tube by Joint Electronics Type Designation. The National Stock Number assigned to this part is 5960012372335, 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 IP 1547 A.