Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CE663M9P39GT found under Electron Tube by Clinton Electronics Corporation Del. The National Stock Number assigned to this part is 5960013635951, 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 CE663M9P39GT.