Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R55212S found under Microcircuit Digital by Rochester Electronicsllc. The National Stock Number assigned to this part is 5962001889882, 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 R55212S.