Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SP01880B found under Transformer Audio F by Power Control Devices Inc. The National Stock Number assigned to this part is 5950004503993, 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 SP01880B.