Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 88171-55-5-621 found under Microcircuit Digita by Cae Corp. The National Stock Number assigned to this part is 5962010494680, and the Federal Supply Class is 5962 Microcircuits Electronic. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 88171-55-5-621.