Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LC51-3BBM found under Filter Low Pass by Spectrum Fsy Microwave Inc. The National Stock Number assigned to this part is 5915012239374, 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 LC51-3BBM.