Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RB50S 15-AF found under Power Sup Aircraft by Martek Power Abbott Inc. The National Stock Number assigned to this part is 6130014783988, and the Federal Supply Class is 6130 Converters Electrical Non Rotating. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like RB50S 15-AF.