Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MM6309 1J found under Microcircuit Memory by Mmi Amd. The National Stock Number assigned to this part is 5962012277898, 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 MM6309 1J.