USB Type-C Reversible Connectors Specifications Published

We now have all sorts of USB receptacles and connectors, but this is supposed to eventually change thanks to type-C connectors, which are small and robust enough to be used in laptop, computer, smartphones, and other type of devices, and will replace the USB type A, micro and mini USB ports. Type-C connectors will also be reversible, so there won’t be a way to insert the cable upside down. The USB 3.0 Promoter Group has just announced the completion of the USB Type-C specification, and transferred it to the USB Implementers Forum (USB-IF) for ongoing management and the establishment of a compliance and certification program.


Key features of Type C specifications include:

  • Entirely new design
    • Tailored for emerging product designs
    • Robust enough for laptops and tablets; slim enough for mobile phones
    • Similar to size of USB 2.0 Micro-B
  • Usability enhancements – Reversible plug orientation and cable direction
  • Supports scalable power charging
  • Future scalability – Designed to support future USB performance needs
  • Mechanical specs
    • Receptacle opening: ~8.4mm x ~2.6mm
    • Durability: 10,000 cycles
  • Improved EMI- and RFI-mitigation features
  • Power delivery capacity – 3A for standard cables and 5A for connectors

USB Type-C is not compatible with older USB connectors and receptacles, so for backward compatibility,  the USB-IF has defined cables which will allow older devices to connect to the new connector, and newer devices to connect to the older connectors. Type C cables and connectors support USB performance at SuperSpeed USB 10 Gbps (USB 3.1) and USB Power Delivery up to 100W.

“USB Type-C Cable and Connector Specification Revision 1.0” is available as part of USB 3.1 specifications. Since the standard has just been finalized, it will take some time to see devices and cables compliant with Type-C specs.

Via Anandtech and Liliputing

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