Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FBC 4-9G 2G-6 50-28A 28A found under Filter Band Pass by Trilithic Inc. The National Stock Number assigned to this part is 5915012640636, 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 FBC 4-9G 2G-6 50-28A 28A.