Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MFR1 4E-1 -22K found under Resistor Fixed Film by Spc Technology. The National Stock Number assigned to this part is 5905015196338, 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 MFR1 4E-1 -22K.