Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B-3091 found under Transformer Pulse by Beta Transformer Technology. The National Stock Number assigned to this part is 5950014149718, and the Federal Supply Class is 5950 Coils And Transformers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B-3091.