Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SX101D1678MHZP12V found under Oscillator Crystal by Oscillatek Corp. The National Stock Number assigned to this part is 5955014416872, 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 SX101D1678MHZP12V.