Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PS 94 444 28A found under Converter Frequency by Unitron Industries Inc. The National Stock Number assigned to this part is 6130016081842, 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 PS 94 444 28A.