Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number T169-404 found under Transistor by Sonicraft Inc. The National Stock Number assigned to this part is 5961001927552, 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 T169-404.