Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HB5-S123 found under Power Supply by Power One Dc Power Supplies. The National Stock Number assigned to this part is 6130013277843, 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 HB5-S123.