Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1N5552 found under Semiconductor Device Diode by Unitrode Integrated Circuits Corp. The National Stock Number assigned to this part is 5961014239988, 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 1N5552.