Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B2-306B found under Transformer Radio F by Viking Technologies Ltd. The National Stock Number assigned to this part is 5950003184028, 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 B2-306B.