Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5B31-03 found under Conditioner Signal by Analog Devices Inc. The National Stock Number assigned to this part is 5963014454205, and the Federal Supply Class is 5963 Electronic Modules. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5B31-03.