Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RC4558DN found under Microcircuit Linear by Raytheon Company. The National Stock Number assigned to this part is 5962001725583, 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 RC4558DN.