Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MN5143H B found under Microcircuit Digita by Spectrum Microwave Inc. The National Stock Number assigned to this part is 5962011012409, 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 MN5143H B.