Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D1001 found under Rectifier Semiconductor Device U by Wetherill Associates Inc. The National Stock Number assigned to this part is 5961011627228, 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 D1001.