Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XR1031 found under Semiconductor Device Diode by Selex Es Limited. The National Stock Number assigned to this part is 5961008354755, 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 XR1031.