As an Amazon Associate, we earn from qualifying purchases. U643B-MFP - Atmel Atmel . U643B-MFP Gallery Attributes Brand name, Manufacturer name, ManufacturerAtmel Extra Product NameU643B-MFP - Atmel moq, multiple1 MPNU643B-MFP qtyInStock0 SKUU643BMFP snippetU643B-MFP In-Stock. Request a quote for the part number# U643B-MFP. Call 877-240-8595 to order. Same day shipping on in-stock parts. Distributor offers SellerSKUMOQIn stockMultiplePrices 4 Star ElectronicsU643BMFP11 HotendaH271735011