Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HF-128 found under Transformer Radio Frequency by Rf Micro Inc. The National Stock Number assigned to this part is 5950003242952, 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 HF-128.