Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6A9944-1 found under Microcircuit Linear by Marconi Electronic Devices Inc. The National Stock Number assigned to this part is 5962001729243, 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 6A9944-1.