Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 77C739649P2 found under Oscillatornoncrystal Controlled by Herley Industries Inc. The National Stock Number assigned to this part is 5963016918252, 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 77C739649P2.