Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number OV2520-BSU found under Swzomnivistaz2500z by Alcatel Internetworking Inc. The National Stock Number assigned to this part is 9999015668956, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like OV2520-BSU.