Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SDA 90110-606 found under Amplifier Radio Fre by Systron Donner Corp. The National Stock Number assigned to this part is 5996013237419, 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 SDA 90110-606.