Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Y101 found under Oven Electrical Ele by Bei Sensors And Systems Co Inc. The National Stock Number assigned to this part is 5955008777107, and the Federal Supply Class is 5955 Oscillators And Piezoelectric Crystals. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like Y101.