Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number X5010B found under Circuit Card Assemb by Nec America Inc. The National Stock Number assigned to this part is 5998013537219, and the Federal Supply Class is 5998 Electrical And Electronic Assemblies Boards Cards And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like X5010B.