The SMA connector(SubMiniature version A) is a 50 ohm coaxial connector. It is visually similar to an F type connector that is commonly used for audio/video communication, but has different dimensions, mechanical properties and is used for different applications such as RF communications up to 18 GHz. Due to its construction, SMA connectors provide a strong and durable connection that minimizes reflections, limiting attenuation, and makes it a great choice when working with microwave frequencies.

 

Key Takeaways

  • SMA connector dimensions are important when selecting, replacing, or designing RF cable assemblies.
  • SMA connectors use a threaded coupling interface for secure mating.
  • Standard SMA and RP-SMA connectors have different centre-contact configurations.
  • Standard SMA connectors commonly use a 1/4-36 UNS thread.
  • SMA connectors are widely used in RF, wireless, antenna, microwave, and test equipment.
  • Many SMA applications use 50-ohm RF systems, but the specific connector specification should
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