AMC Connectors & Cable Assemblies Amphenol RF Micro Coaxial (AMC) Connectors and Cable Assemblies are designed for use in applications with 50Ω impedance requirements. Amphenol RF AMC Connectors feature a low profile of 2.5mm off the board. They have an extremely small board footprint that measures 3mm x 3mm. Typical applications include wireless internet, wireless infrastructure, inventory/barcode scanners, and more.