Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M5504 1000SX F found under Semiconductor Devic by Lucent Technologies Inc. The National Stock Number assigned to this part is 5961016109105, and the Federal Supply Class is 5961 Semiconductor Devices And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like M5504 1000SX F.