Maximum Length of Cables for USB Type-C Applications – KBA204034

Version 3

    Version: *A

     

    Question:

    What is the maximum length of cables that can be used in Type-C applications?

     

    Answer:

    The USB Type-C specification provides the appropriate length for all types of USB Type-C cable assemblies based on cable performance requirements. Always use USB-IF certified cables for the required performance.

     

    The following tables provide the recommended length for each Type-C standard assembly.

     

     

    USB Type-C Standard Cable Assemblies

    Connector type

    USB Version

    Cable length

    Current Rating

    USB Power Delivery USB-PD 2.0

    USB Type-C Electronically marked

    Type-C to Type-C

    USB 2.0

    < 4m

    3 A

    Supported

    Optional

    5A

    Required

    Type-C to Type-C

    USB 3.1 Gen1

    ≤ 2 m

    3 A

    Supported

    Required

    5A

    Required

    Type-C to Type-C

    USB 3.1 Gen2

    ≤ 1 m

    3 A

    Supported

    Required

    5 A

    Required

     

    USB Type-C Legacy Cable Assemblies

    Connector type

    USB Version

    Cable length

    Current Rating

    USB Type-C Electronically marked

    USB Standard A to USB Type-C

     

    USB 2.0

     

    < 4m

    3 A

    Optional

    USB PD Standard-A to

    USB Type- C

    5 A

    Required

    USB Standard-A to

    USB Full-Featured Type-C

    USB 3.1 Gen2

    ≤ 1 m

    3A

    Optional

    USB PD Standard-A to

    USB Full-Featured Type-C

    5A

    Required

    USB Type-C to

    USB Standard-B

     

    USB 2.0

     

    < 4m

    3 A

    Optional

    USB Type-C to

    USB PD Standard-B

    5A

    Required

    USB Full-Featured Type-C to USB Standard-B

    USB 3.1 Gen2

    < 1m

    3 A

    Optional

    USB Full-Featured Type-C to USB  PD Standard-B

    5 A

    Required

    USB  Type-C to

    USB Mini-B

    USB 2.0

     

    < 4m

    500 mA

    Optional

    USB  Type-C to

    USB PD Micro-B

    USB 2.0

    < 2 m

    3 A

    Optional

    USB Full-Featured Type-C to

    USB PD Micro-B

    USB 3.1 Gen2

    < 1m

    3A

    Optional

     

    USB Type-C Legacy Adapter Assemblies

    Connector type

    USB Version

    Cable length

    Current Rating

     

    USB Legacy Receptacle Type

     

    USB Type-C

    Electronically marked

    USB Type-C to

    USB Micro-B

    USB 2.0

    < 0.15 m

    3 A

    PD Receptacle Not Allowed

    Optional

    USB Full-Featured Type-C to USB Standard-A

    USB 3.1 Gen1

    < 0.15 m

    3 A

    PD Receptacle Not Allowed

    Optional

     

    The information in the tables is derived from the USB Type-C specification. Refer to section 3.1 of the USB Type-C specification for more details.