Amphenol Industrial Micro-B Connectors

Amphenol Industrial Micro-B Connectors are lightweight, high-performance circular connectors with a small footprint designed to replace high-cost connectors used in a variety of industrial markets requiring high signal counts in a very small package. The Micro-B components utilize a robust triple bayonet coupling that provides quick and positive locking, along with an internal EMI ground spring for excellent shell-to-shell conductivity. These compact connectors feature high-density insert patterns with size 22D contacts allowing for more circuits to be connected and a simplified termination process with tape and reel contacts. The series offers tool-less and fast mating for ease of use in the field. The Micro-B connectors are RoHS compliant, meet smoke, toxicity, and flammability requirements, and offer a high-reliability connection for demanding applications.


  • Aluminum shell construction provides high strength while being lightweight
  • Stamped and formed crimp contacts, easy for cable assembly
  • 1/4 turn positive bayonet coupling, quick coupling
  • Multiple shell plating options (up to 500H salt spray protection)
  • Excellent shell-to-shell EMI shielding
  • High shock and high vibration resistance
  • Meets smoke, toxicity, and flammability requirements
  • Protection up to IP67 when in the mated condition with a backshell
  • 5 key/keyway mating
  • EMI shielded backshell option
  • Compact, high-density components
  • PCB tail contact option is available
  • UL certifications in process
  • RoHS compliant


  • Telecommunications
  • Hybrid/electric vehicle
  • Robotics/factory automation
  • Unmanned aerial vehicles
  • Industrial instrumentation
  • Security
  • Test equipment


  • Materials
    • Aluminum shells
    • Copper alloy EMI-ring
    • Stainless steel retaining and wave rings
    • Plastic (PA66) insert material
    • Tin/gold-plated copper alloy terminals, crimp termination
  • IP54 rating
  • 250VAC RMS recommended operating voltage
  • 500VAC RMS test voltage
  • 1000MΩ minimum insulation resistance at 500V
  • 22mΩ maximum contact resistance
  • -40°C to +125°C operating temperature range


Published: 2017-10-26 | Updated: 2022-03-11