Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GS70009L19 found under Oscillator Crystal by Lucent Technologies Inc. The National Stock Number assigned to this part is 5963011386578, and the Federal Supply Class is 5963 Electronic Modules. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like GS70009L19.