Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 585R387HO1 found under Semiconductor Devic by Microsemi Corp Massachusetts. The National Stock Number assigned to this part is 5961011537602, and the Federal Supply Class is 5961 Semiconductor Devices And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 585R387HO1.