Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S280MR169P251 found under Resistor Fixed Film by Raytheon Service Co Logistics Su. The National Stock Number assigned to this part is 5905010392290, and the Federal Supply Class is 5905 Resistors. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S280MR169P251.