Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HMC634LC4 found under Amplifier Radio Fre by Hittite Microwave Corporation. The National Stock Number assigned to this part is 5996016415399, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HMC634LC4.