Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S3BR2 found under Rectifier Semiconductor Device U by Semtech Corporation. The National Stock Number assigned to this part is 5961005181441, 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 S3BR2.