Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M5623-12M found under Microcircuit Linear by Mf Electronics Corp. The National Stock Number assigned to this part is 5962012123018, 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 M5623-12M.