Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 251ULR80S15 found under Semiconductor Devic by Power Tech Inc. The National Stock Number assigned to this part is 5961013071550, 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 251ULR80S15.