Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SM1213 found under Mixer by Rf Micro Inc. The National Stock Number assigned to this part is 5985011745256, and the Federal Supply Class is 5985 Antennas Waveguides And Related Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SM1213.