Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LXP1553-3B4 found under Computer Subassembly by Ballard Technology Inc. The National Stock Number assigned to this part is 7021014806021, and the Federal Supply Class is 7021 Adp Central Processing Unit Cpu Computer Digital. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like LXP1553-3B4.