USB 2.0 Specification Engineering Change Notice (ECN) #1: Mini-B connector
`Date: 10/20/2000
`
`Reason for ECN:
`The USB 2.0 specified device-side connector – the B connector – is too large for use with
`a new generation of handheld and mobile devices, e.g., cell phones which would benefit
`from connectivity to the PC. This ECN incorporates a specification of a device-side mini
`connector (hereafter referred to as a mini-B connector). The new connector only applies
`to upstream facing ports, i.e., connectors on devices.
`
`Summary of ECN:
`The bulk of the ECN specifies the mechanical requirements for the mini-B plug,
`receptacle and cable assembly. It also identifies the usage scope of this connector. The
`last part of the ECN describes the minimum test criteria and performance requirements
`for the new connector.
`
`Benefits of ECN:
`The ECN enables standardization of miniature device-side USB connectors and
`consequent economies of scales and lower cost for a new and growing class of devices
`which will benefit from connectivity to the PC. The standardization also allows
`leveraging of the compliance test and certification model which is already in place for
`USB connectors.
`
`Assessment of Impact on Current Specification and Current USB Products:
`The connector specified in the ECN will not have any impact on hardware or software of
`existing USB products. The current USB spec already allows for vendor-specific device
`side connectors – such cable assemblies are called captive assemblies. All that the ECN
`does is to identify one such connector for use in devices which need the smaller size of
`connector. There is a potential for some end-user confusion because of two standard
`cable options; but this can be mitigated by appropriate end-user education.
`
`Structure of ECN:
`The ECN is in the form of a new Chapter 6 with the mini-B connector requirements
`inserted into the appropriate locations. This format enables specification of the new
`connector in context.
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`

`Universal Serial Bus Specification Revision 2.0
`
`Chapter 6
`Mechanical
`
`This chapter provides the mechanical and electrical specifications for the cables, connectors, and cable
`assemblies used to interconnect USB devices. The specification includes the dimensions, materials,
`electrical, and reliability requirements. This chapter documents minimum requirements for the external
`USB interconnect. Substitute material may be used as long as it meets these minimums.
`
`6.1 Architectural Overview
`The USB physical topology consists of connecting the downstream hub port to the upstream port of another
`hub or to a device. The USB can operate at three speeds. High-speed (480 Mb/s) and full-speed (12 Mb/s)
`require the use of a shielded cable with two power conductors and twisted pair signal conductors. Low-
`speed (1.5 Mb/s) recommends, but does not require the use of a cable with twisted pair signal conductors.
`
`The connectors are designed to be hot plugged. The USB Icon on the plugs provides tactile feedback
`making it easy to obtain proper orientation.
`
`6.2 Keyed Connector Protocol
`To minimize end user termination problems, USB uses a “keyed connector” protocol. The physical
`difference in the Series “A” and “B” (or “mini-B”) connectors insures proper end user connectivity. The
`“A” connector is the principle means of connecting USB devices directly to a host or to the downstream
`port of a hub. All USB devices must have the standard Series “A” connector specified in this chapter. The
`“B” (or “mini-B”) “B” connector allows device vendors to provide a standard detachable cable. This
`facilitates end user cable replacement. Figure 6-1Figure 6-1 illustrates the keyed connector protocol.
`
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`Series "A" Connectors
`
`Series "B" Connectors
`
`♦ Series "A" plugs are
`always oriented upstream
`towards the Host System
`
`♦ Series "B" plugs are
`always oriented
`downstream towards the
`USB Device
`
`"A" Plugs
`(From the
`USB Device)
`
`"B" Plugs
`(From the
`Host System)
`
`"A" Receptacles
`(Downstream Output
`from the USB Host or
`Hub)
`
`
`
`"B" Receptacles
`(Upstream Input to the
`USB Device or Hub)
`
`Series "mini-B" Connectors
`
`♦ Series "mini-B" plugs are
`always oriented
`downstream towards the
`USB Device
`
`"mini-B"
`Plugs (From
`the Host
`System)
`
`"mini-B"
`Receptacles
`(Upstream Input to the
`USB Device or Hub)
`
`Figure 6-1. Keyed Connector Protocol
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`The following list explains how the plugs and receptacles can be mated:
`• Series “A” receptacle mates with a Series “A” plug. Electrically, Series “A” receptacles function as
`outputs from host systems and/or hubs.
`• Series “A” plug mates with a Series “A” receptacle. The Series “A” plug always is oriented towards
`the host system.
`• Series “B” receptacle mates with a Series “B” plug (male). Electrically, Series “B” receptacles
`function as inputs to hubs or devices.
`• Series “B” plug mates with a Series “B” receptacle. The Series “B” plug is always oriented towards
`the USB hub or device.
`• Series “mini-B” receptacle mates with a Series “mini-B” plug (male). Electrically, Series “mini-B”
`receptacles function as inputs to hubs or devices.
`• Series “mini-B” plug mates with a Series “mini-B” receptacle. The Series “mini-B” plug is always
`oriented towards the USB hub or device.
`
`6.3 Cable
`USB cable consists of four conductors, two power conductors, and two signal conductors.
`
`High-/full-speed cable consists of a signaling twisted pair, VBUS, GND, and an overall shield. High-/full-
`speed cable must be marked to indicate suitability for USB usage (see Section 6.6.2). High-/full-speed
`cable may be used with either low-speed, full-speed, or high-speed devices. When high-/full-speed cable is
`used with low-speed devices, the cable must meet all low-speed requirements.
`
`Low-speed recommends, but does not require the use of a cable with twisted signaling conductors.
`
`6.4 Cable Assembly
`This specification describes three USB cable assemblies: standard detachable cable, high-/full-speed
`captive cable, and low-speed captive cable.
`
`A standard detachable cable is a high-/full-speed cable that is terminated on one end with a Series “A” plug
`and terminated on the opposite end with a series “B” (or “mini-B”) “B” plug. A high-/full-speed captive
`cable is terminated on one end with a Series “A” plug and has a vendor-specific connect means (hardwired
`or custom detachable) on the opposite end for the high-/full-speed peripheral. The low-speed captive cable
`is terminated on one end with a Series “A” plug and has a vendor-specific connect means (hardwired or
`custom detachable) on the opposite end for the low-speed peripheral. Any other cable assemblies are
`prohibited.
`
`The color used for the cable assembly is vendor specific; recommended colors are white, grey, or black.
`
`6.4.1 Standard Detachable Cable Assemblies
`High-speed and full-speed devices can utilize the “B” (or “mini-B”) “B” connector. This allows the device
`to have a standard detachable USB cable. This eliminates the need to build the device with a hardwired
`cable and minimizes end user problems if cable replacement is necessary.
`
`Devices utilizing the “B” (or “mini-B”) “B” connector must be designed to work with worst case
`maximum length detachable cable. Standard detachable cable assemblies may be used only on high-speed
`and full-speed devices. Using a high-/full-speed standard detachable cable on a low-speed device may
`exceed the maximum low-speed cable length.
`
`Figure 6-2Figure 6-2 and Figure 6-3 illustrates a standard detachable cable assembliesy.
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`8
`
`7
`
`6
`
`5
`
`4
`
`3
`
`2
`
`1
`
`IMPORTANT NOTICE: All standard detachable cable assemblies must be
`high-/full-speed.
`
`A
`
`A
`
`B
`
`B
`
`Overmolded Series "A" Plug
`(Always upstream towards the "host" system.)
`
`Overmolded Series "B" Plug
`(Always downstream towards the USB Device.)
`
`C
`
`C
`
`C
`
`C
`
`Detail A - A
`(Series "A" Plug)
`
`Detail B - B
`(Series "B" Plug)
`
`15.7
`
`1
`
`2
`
`3
`
`4
`
`7.5
`
`10.5
`
`11.5
`
`2
`
`3
`
`1
`
`4
`
`12.0
`
`12.0
`
`27.0
`
`32.0
`
`9.0
`
`9.0
`
`Optional Molded
`Strain Relief
`
`8
`
`7
`
`6
`
`5
`
`4
`
`
`
`Figure 6-22. USB Standard Detachable Cable Assembly
`
`Detail C - C
`(Typical USB Shielded Cable)
`
`Polyvinyl Chloride (PVC) Jacket
`
`> 65% Tinned Copper Braided Shield
`
`Aluminum Metallized Polyester Inner Shield
`28 AWG STC Drain Wire
`
`Red (VBUS)
`
`Black (Ground)
`
`Green (D +)
`
`White (D -)
`
`All dimensions are in millimeters (mm)
`unless otherwise noted.
`Dimensions are TYPICAL and are for
`general reference purposes only.
`
`Series "A" Plug to Series "B" Plug
`USB Standard Detachable
`Cable Assembly
`
`DATE
`SIZE
`A
`2/98
`SCALE: N/A
`3
`
`DRAWING NUMBER
`REV
`N/A
`C
`SHEET 1 of 1
`1
`
`2
`
`H
`
`G
`
`F
`
`E
`
`D
`
`C
`
`B
`
`A
`
`H
`
`G
`
`F
`
`E
`
`D
`
`C
`
`B
`
`A
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`
`
`Figure 6- 3. USB Standard Mini-connector Detachable Cable Assembly
`
`
`
`
`
`
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`Standard detachable cable assemblies must meet the following electrical requirements:
`• The cable must be terminated on one end with an overmolded Series “A” plug and the opposite end is
`terminated with an overmolded Series “B” (or “mini-B”) “B” plug.
`• The cable must be rated for high-speed and full-speed.
`• The cable impedance must match the impedance of the high-speed and full-speed drivers. The drivers
`are characterized to drive specific cable impedance. Refer to Section 7.1.1 for details.
`• The maximum allowable cable length is determined by signal pair attenuation and propagation delay.
`Refer to Sections 7.1.14 and 7.1.17 for details.
`• Differences in propagation delay between the two signal conductors must be minimized. Refer to
`Section 7.1.3 for details.
`• The GND lead provides a common ground reference between the upstream and downstream ports.
`The maximum cable length is limited by the voltage drop across the GND lead. Refer to Section 7.2.2
`for details. The minimum acceptable wire gauge is calculated assuming the attached device is high
`power.
`• The VBUS lead provides power to the connected device. For standard detachable cables, the VBUS
`requirement is the same as the GND lead.
`
`6.4.2 High-/full-speed Captive Cable Assemblies
`Assemblies are considered captive if they are provided with a vendor-specific connect means (hardwired or
`custom detachable) to the peripheral. High-/full-speed hardwired cable assemblies may be used with either
`high-speed, full-speed, or low-speed devices. When using a high-/full-speed hardwired cable on a low-
`speed device, the cable must meet all low-speed requirements.
`
`Figure 6-3 Figure 6-4 illustrates a high-/full-speed hardwired cable assembly.
`
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`8
`
`7
`
`6
`
`4
`
`3
`
`2
`
`5
`
`A
`
`A
`
`1
`
`B
`
`B
`
`Overmolded Series "A" Plug
`(Always upstream towards the "host" system.)
`
`Detail A - A
`(Series "A" Plug)
`
`15.7
`
`1
`
`2
`
`3
`
`4
`
`7.5
`
`12.0
`
`27.0
`
`9.0
`
`Optional Molded
`Strain Relief
`
`Cut End
`(Always downstream towards the USB Device.)
`
`Detail B - B (Typical Terminations)
`
`Blunt Cut Termination
`
`Polyvinyl Chloride (PVC) Jacket
`
`Blunt Cut Termination
`(Length Dimension Point)
`
`Prepared Termination
`Polyvinyl Chloride (PVC) Jacket
`> 65% Tinned Copper Braided
`Shield
`Metallized Mylar Inner Shield
`28 AWG STC Drain Wire
`Red (VBUS)
`Black (Ground)
`Green (D +)
`White (D -)
`
` User Specified
`Length Dimension Point
`
`All dimensions are in millimeters (mm)
`unless otherwise note.
`Dimensions are TYPICAL and are for
`general reference purposes only.
`
`8
`
`7
`
`6
`
`5
`
`4
`
`Series "A" Plug to Cut End
`USB High-/full-speed
`Hardwired Cable Assembly
`
`DATE
`SIZE
`A
`2/98
`SCALE: N/A
`3
`
`REV
`DRAWING NUMBER
`N/A
`C
`SHEET 1 of 1
`1
`
`2
`
`H
`
`G
`
`F
`
`E
`
`D
`
`C
`
`B
`
`A
`
`H
`
`G
`
`F
`
`E
`
`D
`
`C
`
`B
`
`A
`
`
`
`
`
`Figure 6-36-4. USB High-/full-speed Hardwired Cable Assembly
`
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`Universal Serial Bus Specification Revision 2.0
`
`High-/full-speed captive cable assemblies must meet the following electrical requirements:
`• The cable must be terminated on one end with an overmolded Series “A” plug and the opposite end is
`vendor specific. If the vendor specific interconnect is to be hot plugged, it must meet the same
`performance requirements as the USB “B” connector.
`• The cable must be rated for high-speed and full-speed.
`• The cable impedance must match the impedance of the high-speed and full-speed drivers. The drivers
`are characterized to drive specific cable impedance. Refer to Section 7.1.1 for details.
`• The maximum allowable cable length is determined by signal pair attenuation and propagation delay.
`Refer to Sections 7.1.14 and 7.1.17 for details.
`• Differences in propagation delay between the two signal conductors must be minimized. Refer to
`Section 7.1.3 for details.
`• The GND lead provides a common reference between the upstream and downstream ports. The
`maximum cable length is determined by the voltage drop across the GND lead. Refer to Section 7.2.2
`for details. The minimum wire gauge is calculated using the worst case current consumption.
`• The VBUS lead provides power to the connected device. The minimum wire gauge is vendor specific.
`
`6.4.3 Low-speed Captive Cable Assemblies
`Assemblies are considered captive if they are provided with a vendor-specific connect means (hardwired or
`custom detachable) to the peripheral. Low-speed cables may only be used on low-speed devices.
`
`Figure 6-4Figure 6-5 illustrates a low-speed hardwired cable assembly.
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`8
`
`7
`
`6
`
`5
`
`4
`
`3
`
`2
`
`1
`
`IMPORTANT NOTICE: For use in low-speed applications only.
`
`H
`
`G
`
`F
`
`E
`
`D
`
`C
`
`B
`
`A
`
`A
`
`A
`
`B
`
`B
`
`Overmolded Series "A" Plug
`(Always upstream towards the "host" system.)
`
`Detail A - A
`(Series "A" Plug)
`
`15.7
`
`1
`
`2
`
`3
`
`4
`
`7.5
`
`12.0
`
`27.0
`
`9.0
`
`Cut End
`(Always downstream towards the USB Device.)
`
`Detail B - B (Typical Terminations)
`
`Blunt Cut Termination
`
`Polyvinyl Chloride (PVC) Jacket
`
`Prepared Termination
`
`Polyvinyl Chloride (PVC) Jacket
`
`Blunt Cut Termination
`(Length Dimension Point)
`
`Red (VBUS)
`Black (Ground)
`
`Green (D +)
`
`White (D -)
`
` User Specified
`
`Length Dimension Point
`
`Optional Molded
`Strain Relief
`
`All dimensions are in millimeters (mm)
`unless otherwise noted.
`Dimensions are TYPICAL and are for
`general reference purposes only.
`
`8
`
`7
`
`6
`
`5
`
`4
`
`Series "A" Plug to Cut End
`USB Low-speed
`Hardwired Cable Assembly
`
`DATE
`SIZE
`A
`2/98
`SCALE: N/A
`3
`
`DRAWING NUMBER
`REV
`N/A
`C
`SHEET 1 of 1
`1
`
`2
`
`
`
`
`
`Figure 6-46-5. USB Low-speed Hardwired Cable Assembly
`
`H
`
`G
`
`F
`
`E
`
`D
`
`C
`
`B
`
`A
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`Low-speed captive cable assemblies must meet the following electrical requirements:
`• The cable must be terminated on one end with an overmolded Series “A” plug and the opposite end is
`vendor specific. If the vendor specific interconnect is to be hot plugged, it must meet the same
`performance requirements as the USB “B” connector.
`• Low-speed drivers are characterized for operation over a range of capacitive loads. This value
`includes all sources of capacitance on the D+ and D-lines, not just the cable. Cable selection must
`insure that total load capacitance falls between specified minimum and maximum values. If the
`desired implementation does not meet the minimum requirement, additional capacitance needs to be
`added to the device. Refer to Section 7.1.1.2 for details.
`• The maximum low-speed cable length is determined by the rise and fall times of low-speed signaling.
`This forces low-speed cable to be significantly shorter than high-/full-speed. Refer to Section 7.1.1.2
`for details.
`• Differences in propagation delay between the two signal conductors must be minimized. Refer to
`Section 7.1.3 for details.
`• The GND lead provides a common reference between the upstream and downstream ports. The
`maximum cable length is determined by the voltage drop across the GND lead. Refer to Section 7.2.2
`for details. The minimum wire gauge is calculated using the worst case current consumption.
`• The VBUS lead provides power to the connected device. The minimum wire gauge is vendor specific.
`
`6.4.4 Prohibited Cable Assemblies
`USB is optimized for ease of use. The expectation is that if the device can be plugged in, it will work.
`By specification, the only conditions that prevent a USB device from being successfully utilized are
`lack of power, lack of bandwidth, and excessive topology depth. These conditions are well understood
`by the system software.
`
`Prohibited cable assemblies may work in some situations, but they cannot be guaranteed to work in all
`instances.
`• Extension cable assembly
`A cable assembly that provides a Series “A” plug with a series “A” receptacle or a Series “B” plug
`with a Series “B” receptacle or a Series “mini-B” plug with a Series “mini-B” receptacle. This
`allows multiple cable segments to be connected together, possibly exceeding the maximum
`permissible cable length.
`• Cable assembly that violates USB topology rules
`A cable assembly with both ends terminated in either Series “A” plugs or Series “B” (or “mini-
`B”) “B” receptacles. This allows two downstream ports to be directly connected.
`
`Note: This prohibition does not prevent using a USB device to provide a bridge between two USB
`buses.
`• Standard detachable cables for low-speed devices
`Low-speed devices are prohibited from using standard detachable cables. A standard detachable
`cable assembly must be high-/full-speed. Since a standard detachable cable assembly is high-/full-
`speed rated, using a long high-/full-speed cable exceeds the capacitive load of low-speed.
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`6.5 Connector Mechanical Configuration and Material Requirements
`The USB Icon is used to identify USB plugs and the receptacles. Figure 6-5Figure 6-6 illustrates the USB
`Icon.
`
`1.50 L
`
`1.50 L
`
`All dimensions are ± 5%
`
`Dia:1.67 L
`
`Dia:1.33 L
`
`0.33 L
`
`L
`
`Dia:L
`
`Dia:L
`
`0.33 L
`
`L
`
`L
`
`0.5 L
`
`Dia:L
`
`Dia:L
`
`Dia:1.33 L
`
`0.33 L
`
`L
`
`L
`
`L
`
`1.67 L
`2.33 L
`3.75 L
`5.00 L
`5.17 L
`6.25 L
`8.00 L
`
`
`
`Figure 6-5Figure 6-6 . USB Icon
`
`
`
`
`
`
`
`6.5.1 USB Icon Location
`The USB Icon is embossed, in a recessed area, on the topside of the USB plug. This provides easy user
`recognition and facilitates alignment during the mating process. The USB Icon and Manufacturer’s logo
`should not project beyond the overmold surface. The USB Icon is required, while the Manufacturer’s logo
`is recommended, for both Series “A” and “B” (or “mini-B”) “B” plug assemblies. The USB Icon is also
`located adjacent to each receptacle. Receptacles should be oriented to allow the Icon on the plug to be
`visible during the mating process. Figure 6-6Figure 6-7 and Figure 6-8 illustrates the typical plug
`orientations.
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`Top View
`A
`
`Optional Top
`"Locator Detail"
`
`4321
`
`Optional Top
`"Locator Detail"
`
`A
`
`Locator
`Height
`Approximately
`0.6mm
`(0.024")
`Manufacturer’s
`Engraved Logo
`
`Locator Width
`Approximately
`0.5mm
`(0.020")
`0.6mm (0.024") Max
`Manufacturer’s
`Logo
`Engraving Recess
`
`Engraved USB
`Icon
`
`Overmolding
`
`0.6mm (0.024")
`Max
`USB Icon
`Engraving Recess
`
`Section A - A
`(Plug Cross-Section)
`
`
`
`
`
`
`
`Figure 6-6Figure 6-7 . Typical USB Plug Orientation
`
`
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`
`
`
`
`
`
`
`Figure 6- 8. Typical USB “Mini-B” Connector Plug Orientation
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`6.5.2 USB Connector Termination Data
`Table 6-1Table 6-1 provides the standardized contact terminating assignments by number and electrical
`value for Series “A” and Series “B” connectors.
`
`Table 6-1. USB Series “A” and Series “B” Connector Termination Assignment
`
`Contact
`Typical Wiring
`Number
`Assignment
`
`Signal Name
`
`
`
`1
`
`2
`
`3
`
`4
`
`Shell
`
`VBUS
`
`D-
`
`D+
`
`GND
`
`Shield
`
`Red
`
`White
`
`Green
`
`Black
`
`Drain Wire
`
`Table 6-2 provides the standardized contact terminating assignments by number and electrical value for
`Series “mini-B” connectors.
`
`
`
`Table 6-2. USB Series “mini-B” Connector Termination Assignment
`
`Contact
`
`
`Typical Wiring
`
`
`Number
`
`
`Assignment
`
`
`
`
`Signal Name
`
`
`
`1
`
`2
`
`3
`
`4
`
`5
`
`
`
`Shell
`
`
`
`
`
`
`
`VBUS
`
`D-
`
`
`
`D+
`
`ID
`
`
`
`GND
`
`
`
`
`
`Shield
`
`
`
`Red
`
`
`
`
`
`White
`
`
`
`
`
`Green
`
`
`
`not connected
`
`
`
`
`
`
`
`Black
`
`
`
`Drain Wire
`
`
`
`
`6.5.3 Series “A” and Series “B” (or “Mini-B”) “B” Receptacles
`
`Electrical and mechanical interface configuration data for Series "A" and Series "B" receptacles are shown
`in Figure 6-7Figure 6-9 through Figure 6-12 and Figure 6-8. Also, refer to Figure 6-12Figure 6-17 through
`Figure 6-20, Figure 6-13, and Figure 6-14 at the end of this chapter for typical PCB receptacle layouts.
`
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`H
`
`G
`
`F
`
`E
`
`D
`
`C
`
`B
`
`A
`
`99
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`8
`
`7
`
`6
`
`5
`
`4
`
`3
`
`2
`
`1
`
`USB Series "A" Receptacle Interface
`
`A
`
`8.88 ± 0.20
`8.38 ± 0.08
`
`B Center Line
`
`1.84 ± 0.05
`
`0.50 ± 0.10
`
`B
`
`C
`
`12.50 ± 0.10
`
`11.10 ± 0.10
`
`R 0.64 ± 0.13 (Typical)
`R 0.32 ± 0.13 (Typical)
`
`300 ± 20 (2)
`
`1
`
`2
`
`3
`
`4
`
`5.12 ± 0.10
`
`0.38 ± 0.13
`
`Center Line of 5.12
`
`0.64 ± 0.13 (8)
`
`Receptacle Contact
`Contact Point
`
`1.00 ± 0.05 (2)
`
`3.50 ± 0.05 (2)
`
`1.00 ± 0.05 (4)
`C Center Line
`
`4.98 ± 0.25
`
`Printed Circuit Board
`4.13 REF
`
`All dimensions are in millimeters (mm) unless
`otherwise noted.
`
`USB Series "A" Receptacle and Plug
`Mating Features
`
`Fully Mated Series "A"
`Receptacle and Plug
`
`0.50 ± 0.10 (2)
`
`300 ± 20 (2)
`
`8.0 MAX
`
`Overmold Boot
`
`Receptacle Flange
`
`1
`
`2.67 MIN
`
`1
`
`Allow a minimum spacing of 2.67mm between
`the face of the receptacle and the plug
`overmold boot.
`
`8
`
`7
`
`6
`
`5
`
`4
`
`Interface and Mating Drawing
`
`Series "A" Receptacle
`
`DATE
`SIZE
`A
`2/98
`SCALE: N/A
`3
`
`REV
`DRAWING NUMBER
`N/A
`C
`SHEET 1 of 1
`1
`
`2
`
`H
`
`G
`
`F
`
`E
`
`D
`
`C
`
`B
`
`A
`
`
`
`
`
`
`
`Figure 6-7Figure 6-9 . USB Series "A" Receptacle Interface and Mating Drawing
`
`
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`8
`
`7
`
`6
`
`5
`
`4
`
`3
`
`2
`
`1
`
`USB Series "B" Receptacle Interface
`
`A
`
`8.88 + 0.20
`8.38 + 0.08
`
`8.45 + 0.10
`
`5.60 + 0.10
`
`C
`
`1.63 + 0.05 (2)
`
`H
`
`Receptacle Contact
`
`B Center Line
`
`4.98 + 0.25
`
`B Center Line
`
`2
`
`3
`
`1
`
`4
`
`450 + 0.50 (2)
`
`300 + 20 (4)
`
`3.67 + 0.08
`
`0.38 + 0.13 (4)
`R 0.38 (6)
`Contact Point
`1.00 + 0.05 (4)
`
`C Center Line
`Receptacle Housing
`300 + 20 (2)
`
`B
`
`7.78 + 0.10
`
`G
`
`3.18 + 0.05
`
`0.80 + 0.08
`
`3.67 Center Line
`
`1.25 + 0.10 (4)
`
`All dimensions are in millimeters (mm)
`unless otherwise noted.
`
`0.50 + 0.10 (2)
`
`Receptacle Shell
`
`USB Series "B" Receptacle and Plug Mating Features
`
`11.5 MAX
`
`Overmold Boot
`
`Interface and Mating Drawing
`
`USB Series "B" Receptacle
`
`DATE
`SIZE
`A
`2/98
`SCALE: N/A
`3
`
`REV
`DRAWING NUMBER
`N/A
`C
`SHEET 1 of 1
`1
`
`2
`
`10.5 MAX
`
`Overmold Boot
`
`1
`
`2.67 MIN
`
`Receptacle Shell
`Fully Mated Plug and Receptacle
`
`1
`
`Allow a minimum spacing of 2.67mm between the
`face of the receptacle and the plug overmold boot.
`
`8
`
`7
`
`6
`
`5
`
`4
`
`F
`
`E
`
`D
`
`C
`
`B
`
`A
`
`
`
`
`
`
`
`Figure 6-8Figure 6-10 . USB Series "B" Receptacle Interface and Mating Drawing
`
`
`
`
`
`H
`
`G
`
`F
`
`E
`
`D
`
`C
`
`B
`
`A
`
`100
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`

`Universal Serial Bus Specification Revision 2.0
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`
`
`Figure 6- 11. USB Series “Mini-B” Receptacle Interface and Mating Drawing
`
`
`
`
`
`
`
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`Universal Serial Bus Specification Revision 2.0
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`
`
`
`
`
`
`
`
`Figure 6- 12. USB Series “Mini-B” Receptacle Interface Drawing (Detail)
`
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`Universal Serial Bus Specification Revision 2.0
`
`6.5.3.1 Receptacle Injection Molded Thermoplastic Insulator Material
`Minimum UL 94-V0 rated, thirty percent (30%) glass-filled polybutylene terephthalate (PBT) or
`polyethylene terephthalate (PET) or better.
`
`Typical Colors: Black, gray, and natural. The “mini-B” receptacle insulator must be black in color.
`
`Flammability Characteristics: UL 94-V0 rated.
`
`Flame Retardant Package must meet or exceed the requirements for UL, CSA, VDE, etc.
`
`Oxygen Index (LOI): Greater than 21%. ASTM D 2863.
`
`6.5.3.2 Receptacle Shell Materials
`
`Series “A” and Series “B”
`6.5.3.2.1
`Substrate Material: 0.30 + 0.05 mm phosphor bronze, nickel silver, or other copper based high strength
`materials.
`
`Plating:
`1. Underplate: Optional. Minimum 1.00 micrometers (40 microinches) nickel. In addition,
`manufacturer may use a copper underplate beneath the nickel.
`2. Outside: Minimum 2.5 micrometers (100 microinches) bright tin or bright tin-lead.
`
`Series “mini-B”
`6.5.3.2.2
`Substrate Material: 0.3 mm minimum phosphor bronze, nickel silver, or other suitable material.
`
`The plating information below describes an example of acceptable "mini-B" receptacle plating.
`
`Plating:
`1. Underplate: Optional. Minimum 1.00 micrometers (40 microinches) nickel. In addition, manufacturer
`may use a copper underplate beneath the nickel.
`2. Outside: Minimum 2.5 micrometers (100 microinches) bright tin or bright tin-lead.
`
`6.5.3.3 Receptacle Contact Materials
`
`Series “A” and Series “B”
`6.5.3.3.1
`Substrate Material: 0.30 + 0.05 mm minimum half-hard phosphor bronze or other high strength copper
`based material.
`
`Plating: Contacts are to be selectively plated.
`A. Option I
`1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. Copper over base material
`is optional.
`2. Mating Area: Minimum 0.05 micrometers (2 microinches) gold over a minimum of
`0.70 micrometers (28 microinches) palladium.
`3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the
`underplate.
`B. Option II
`1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. Copper over base material
`is optional.
`
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`Universal Serial Bus Specification Revision 2.0
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`2. Mating Area: Minimum 0.05 micrometers (2 microinches) gold over a minimum of
`0.75 micrometers (30 microinches) palladium-nickel.
`3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the
`underplate.
`C. Option III
`1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. Copper over base material
`is optional.
`2. Mating Area: Minimum 0.75 micrometers (30 microinches) gold.
`3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the
`underplate.
`
`Series “mini-B”
`6.5.3.3.2
`Substrate Material: 0.2 mm minimum half-hard phosphor bronze or other high strength suitable material.
`
`Plating: Contacts are to be selectively plated.
`
`The following underplate, mating area, and solder tails options below describe examples of acceptable
`"mini-B" receptacle contact plating.
`D. Option I
`1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. Copper over base material
`is optional.
`2. Mating Area: Minimum 0.05 micrometers (2 microinches) gold over a minimum of
`0.70 micrometers (28 microinches) palladium.
`3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the
`underplate.
`E. Option II
`1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. Copper over base material
`is optional.
`2. Mating Area: Minimum 0.05 micrometers (2 microinches) gold over a minimum of
`0.75 micrometers (30 microinches) palladium-nickel.
`3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the
`underplate.
`F. Option III
`1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. Copper over base material
`is optional.
`2. Mating Area: Minimum 0.75 micrometers (30 microinches) gold.
`3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the
`underplate.
`
`
`6.5.4 Series “A” and Series “B” (or “Mini-B”) “B” Plugs
`
`Electrical and mechanical interface configuration data for Series "A" and Series “B” (or “mini-B”) "B"
`plugs are shown in Figure 6-9Figure 6-13 through Figure 6-15 and Figure 6-10.
`
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`H
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`G
`
`F
`
`E
`
`D
`
`C
`
`B
`
`A
`
`105
`
`Universal Serial Bus Specification Revision 2.0
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`8
`
`7
`
`6
`
`5
`
`4
`
`3
`
`2
`
`1
`
`B
`
`12.00 ± 0.10
`
`R 0.64 + 0.13 Typical
`
`11.75 MIN
`
`H
`
`8.0 MAX
`
`0.315 ± 0.03 Typical
`
`0.15 ± 0.10 Typical
`
`300 ± 20 Typical
`
`4
`
`3
`
`2
`
`1
`
`A
`
`8.0 MAX
`
`16.0 MAX
`
`A
`
`4.0 MAX
`
`B Center Line
`
`4.50 ± 0.10
`
`300 ± 20
`
`1.95 ± 0.05
`
`0.38 ± 0.13
`
`Plug Contact
`
`1
`
`A
`
`5.16 ± 0.10
`
`1.00 ± 0.05 (4)
`
`UL 94-V0 Plug Housing
`
`11.75 MIN
`
`2.00 ± 0.13 (4)
`
`Overmold Boot
`
`B
`
`2.50 ± 0.05 (2)
`
`B Center Line
`
`2.00 ± 0.05 (2)
`
`Section A - A
`
`Overmold Boot
`
`2.50 ± 0.13 (4)
`
`B
`
`1
`
`Overall connector and cable assembly
`length is measured from Datum ’A’ of
`the Series "A" Plug to Datum ’A’ of the
`Series "B" Plug or to the blunt end
`termination.
`
`All dimensions are in millimeters (mm)
`unless otherwise noted.
`
`8.65 ± 0.19
`7.41 ± 0.31
`6.41 ± 0.31
`
`1.0 ± 0.05 (2)
`
`3.5 ± 0.05 (2)
`
`4.2 MIN
`GOLD PLATE AREA
`
`9.70 ± 0.13
`
`Section B - B
`
`0.16 ± 0.15
`
`0.13 ± 0.13
`
`8
`
`7
`
`6
`
`5
`
`4
`
`Interface Drawing
`
`USB Series "A" Plug
`
`DATE
`SIZE
`A
`2/98
`SCALE: N/A
`3
`
`REV
`DRAWING NUMBER
`N/A
`C
`SHEET 1 of 1
`1
`
`2
`
`G
`
`F
`
`E
`
`D
`
`C
`
`B
`
`A
`
`
`
`Figure 6-9Figure 6-13 . USB Series "A" Plug Interface Drawing
`
`
`
`
`
`
`
`
`
`FISI Ex 2004-p 23
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`IPR2018-00465
`
`

`

`H
`
`G
`
`F
`
`E
`
`D
`
`C
`
`B
`
`A
`
`Universal Serial Bus Specification Revision 2.0
`
`8
`
`7
`
`6
`
`5
`
`4
`
`3
`
`2
`
`1
`
`10.5 MAX
`
`Overmold Boot
`
`11.75 MIN
`
`3.70 ± 0.13
`B
`
`11.5 MAX
`
`Overmold Boot
`
`B
`
`H
`
`C
`
`8.00 ± 0.10
`
`5.83 ± 0.10
`0.38 MAX
`
`B
`
`300 ± 20 Typical
`
`1.46 ± 0.10
`
`G
`
`450 ± 0.50 (2)
`
`Center Line
`of 2.85
`
`A
`2.85 ± 0.13 (2)
`
`1
`
`4
`
`2
`
`3
`
`3.29 ± 0.05
`7.26 ± 0.10
`
`0.80 ± 0.05
`
`300 ± 20 (2)
`
`A
`
`C Center Line
`
`B Center Line
`
`1
`
`A
`
`Section A - A
`
`6.41 ± 0.31
`
`0.25 ± 0.05
`
`F
`
`E
`
`D
`
`C
`
`B
`
`A
`
`106
`
`4.20 MIN
`Gold Plate Area
`
`8.65 ± 0.19
`
`1.16 MAX
`1.25 ± 0.10 (4)
`
`7.41 ± 0.31
`
`4.67 ± 0.10
`
`C Center Line
`
`Section B - B
`
`0.16 ± 0.15
`Typical
`
`0.13 ± 0.13
`Typical
`
`8
`
`7
`
`6
`
`5
`
`4
`
`1
`
`Overall connector and cable assembly length
`is measured from Datum 'A' of the Series "B"
`Plug to Datum 'A' of the Series "A" Plug or
`the blunt end termination.
`
`All dimensions are in millimeters (mm)
`unless otherwise noted.
`
`Interface Drawing
`
`USB Series "B" Plug
`
`DATE
`SIZE
`A
`2/98
`SCALE: N/A
`3
`
`REV
`DRAWING NUMBER
`N/A
`C
`SHEET 1 of 1
`1
`
`2
`
`
`
`
`
`
`
`Figure 6-10Figure 6-14 . USB Series “B” Plug Interface Drawing
`
`
`
`
`
`FISI Ex 2004-p 24
`Huawei v FISI
`IPR2018-00465
`
`

`

`Universal Serial Bus Specification Revision 2.0
`
`
`
`Figure 6- 15. USB Series “Mini-B” Plug Interface Drawing
`
`
`
`
`
`
`
`107
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`
`

`

`Universal Serial Bus Specification Revision 2.0
`
`6.5.4.1 Plug Injection Molded Thermoplastic Insulator Material
`Minimum UL 94-V0 rated, thirty percent (30%) glass-filled polybutylene terephthalate (PBT) or
`polyethylene terephthalate (PET) or better.
`
`Typical Colors: Black, gray, and natural. The “mini-B” plug insulator must be black in color.
`
`Flammability Characteristics: UL 94-V0 rated.
`
`Flame Retardant Package must meet or exceed the requirements for UL, CSA, and VDE.
`
`Oxygen Index (LOI): 21%. ASTM D 2863.
`
`6.5.4.2 Plug Shell Materials
`
`Series “A” and Series “B”
`6.5.4.2.1
`Substrate Material: 0.30 + 0.05 mm phosphor bronze, nickel silver, or other suitable material.
`
`Plating:
`A. Underplate: Optional. Minimum 1.00 micrometers (40 microinches) nickel. In addition,
`manufacturer may use a copper underplate beneath the nickel.
`B. Outside: Minimum 2.5 micrometers (100 microinches) bright tin or bright tin-lead.
`
`Series “mini-B”
`6.5.4.2.2
`Substrate Material: 0.2 mm minimum phosphor bronze, nickel silver, or other suitable material.
`
`The information below describes an example of acceptable "mini-B" plug plating.
`
`Plating:
`
`1. Underplate: Optional. Minimum 1.00 micrometers (40 microinches) nickel. In addition,
`manufacturer may use a copper underplate beneath the nickel.
`2. Outside: Minimum 2.5 micrometers (100 microinches) bright tin or bright tin-lead.
`
`6.5.4.3 Plug (Male) Contact Materials
`
`Series “A” and Series “B”
`6.5.4.3.1
`Substrate Material: 0.30 + 0.05 mm half-hard phosphor bronze.
`
`Plating: Contacts are to be selectively plated.
`A. Option I
`1. Underpl