Mechanical
EMI contact zones
BOTTOM VIEW (SIDE OPPOSITE SUPERSPEED CONTACTS)
Figure 5-2. Example USB 3.1 Standard-A Receptacle with Grounding Springs and Required
contact zones on the Standard-A Plug.
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Universal Serial Bus 3.1 Specification, Revision 1.0
Insertion detect pinsDetect circuit is closed after a mating part is insertedDetect circuitSpring fingers on the side of receptacle shell are EMI functional
Figure 5-3. Example USB 3.1 Standard-A Mid-Mount Receptacles with Insertion Detect
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Mechanical
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Universal Serial Bus 3.1 Specification, Revision 1.0
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Mechanical
Figure 5-4. USB 3.1 Standard-A Plug Interface Dimensions
5.3.1.2 USB 3.1 Standard-A Reference Footprints
This specification does not define standard footprints. Any footprint may be used as long as all mechanical and electrical requirements are met. Example footprints are provided for reference only.
Figure 5-5 shows through-hole example footprints for the USB 3.1 Standard-A receptacle with a back-shield. Pin numbers are marked.
Figure 5-6 shows an example footprint for a mid-mount standard mount (mounted on the top of the PCB) Standard-A receptacle that includes Insertion Detect.
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USB - 3 - 1 - r1.0 协会尺寸规范
