Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LM139AD found under Microcircuit Linear by Advanced Micro Devices Inc. The National Stock Number assigned to this part is 5962010107822, 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 LM139AD.