N-Type to SMA Cable Assemblies Amphenol RF N-Type to SMA Cable Assemblies are available in two options: an SMA plug to an N-Type plug using an RG-316 cable or an SMA plug to an N-type jack using an RG-142 cable. These cable assemblies offer 50Ω impedance and DC to 6GHz frequency. The cables come in lengths of 0.152m to 3m (6' to 118.11') with a straight or bulkhead connector body style. Amphenol RF N-Type to SMA Cable Assemblies offer 1000VRMS hipot and up to 5% tolerance.