Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SMC 151 found under Microcircuit Hybrid by Spectrum Microwave Inc. The National Stock Number assigned to this part is 5962013938712, and the Federal Supply Class is 5962 Microcircuits Electronic. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SMC 151.