Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 189981-001 found under Microcircuit Digita by Astronautics Corporation Of America. The National Stock Number assigned to this part is 5962014637998, 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 189981-001.