Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FN1191-12R012500MHZ found under Filter Band Pass by Piezo Technologyinc. The National Stock Number assigned to this part is 5915007670911, and the Federal Supply Class is 5915 Filters And Networks. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like FN1191-12R012500MHZ.