Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 40B042-1 found under Microcircuit Digita by Oai Electronicsllc. The National Stock Number assigned to this part is 5962011756028, 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 40B042-1.