Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CD4040MW found under Microcircuit Digita by Ahearn And Soper Co Inc. The National Stock Number assigned to this part is 5962011629062, 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 CD4040MW.