... copper/Gold plated 4.Certification:RoHS/ISO9001:2008 SMA Female To BMA Female RF Adapter 2 Hole FlangeElectrical data:Impedance: 50 ohmFrequency ... in the development, manufacture and sale of R.F coaxial connectors, cable assemblies, matched terminals, micro-wave components ... Zone, China. We manufacture the following products: 1) RF coaxial connectors and adapters up to 50GHz 2) Flexible, semi- ...