SFA series coaxial cables Features Use Features SFA series coaxial cables use high foamed polyethylene for insulation and copper laminated plastic tape for the outer conductor to provide better radio frequency characteristics than those of the FB series cables. They also exhibit good flexibility for use in applications where space is limited. Handling for attachment to connectors is as easy as coaxial cables for general use. Conform to the RoHS directive. Use Interconnection between system devices and radio antenna cabling for WiMAX networks and others