Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B77T0056-1 found under Microcircuit Linear by Microsemi Corp Massachusetts. The National Stock Number assigned to this part is 5962000146192, 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 B77T0056-1.