Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HD61603R found under Microcircuit Digital by Hitachi Kokusai Electric America. The National Stock Number assigned to this part is 5962014571889, 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 HD61603R.