Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 445 4 13239 015 found under Microcircuit Digital by G E C Marconi S3i Ltd. The National Stock Number assigned to this part is 5962010737365, 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 445 4 13239 015.