Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number STDA11-20R30 found under Coil Radio Frequenc by Rhg Electronics Laboratory Inc. The National Stock Number assigned to this part is 5950009932866, 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 STDA11-20R30.