USB connectors
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About USB Connectors
USB (Universal Serial Bus) was originally developed and introduced (1996) as a way of setting up communication between a computer and peripheral devices by replacing many varieties of serial and parallel ports.
USB connectors have become the standard connection method for devices such as mice, keyboards, game pads & joysticks, scanners, digital cameras, printers and external hard drives.
Although designed for personal computers USB has become commonplace on other devices such as mobile phones, PDA's, video game consoles, AC power adaptors, memory sticks and mobile internet access dongles.
USB On The Go (OTG) features compact, robust and durable design of more than 5,000 mating / unmating cycles
5 pin right angle type, fully compliant with USB2.0 (backward compatible to USB1.0 & 1.1).
15u" gold plated contacts for low contact resistance (<50mOhm).
Top mount & mid mount with optional post, suitable for different design scenarios.
Hi-Temp thermoplastics (e.g. 30% glass filled LCP) rated to UL94-V0 as housing material.
Metal shielding prevents unwanted RF signals radiating out to interfere with other components.
Wide flat top surface with tape & reel packing suitable for easy pick & place mounting.
10 pin right angle type, full compliant with USB OTG, USB2.0 (backward compatible to USB1.0 & 1.1).
15µ" gold plated contacts for low contact resistance (<50mOhm).
UL94-V0 Hi-Temp thermoplastic (e.g. 30% glass filled LCP) housing with structure to prevent inverted insertion of plugs.
Metal shielding to minimize EMI interference to other components.
Wide flat top surface with tape & reel packing suitable for easy pick & place mounting.
Cable assemblies available.
Ultra-small, almost 60% smaller than a Mini USB Receptacle - uses less space.
Bottom, mid and reverse mount SMT types and vertical DIP type available for different design configurations.
5 pin right angle type, full compliant to USB2.0 (backward compatible to USB1.0 & 1.1).
30µ" gold plated contacts for low contact resistance (<30mOhm).
Mid Mount requires a PCB cutout which allows height saving for space critical designs.
PCB shell stakes and plastic peg options allow extra physical strength and solder process PCB retention.
Improved durability for a guaranteed life of 10,000 mating / unmating cycles.
Metal shielding minimizes EMI interference to other components.
Wide flat top surface with tape & reel packing suitable for easy pick & place mounting.
Thru hole Receptacle in straight orientation allows alternative design configurations.
Ultra-small, almost 60% smaller than a Mini USB Receptacle - uses less space.
5 pin vertical type, full compliant to USB2.0 (backward compatible to USB1.0 & 1.1).
30µ" gold plated contacts for low contact resistance (<30mOhm).
Metal shell stakes provide strength and shell grounding.
Improved durability for a guaranteed life of 10,000 mating / unmating cycles.
Metal shielding minimizes EMI interference to other components.
Micro USB2.0 Mount Types - Vertical, Horizontal: Top mount, mid mount and bottom mount
Vertical Mount USB connector: Mounted at 180° on PCB.
Regardless of PCB connector orientation cable plugs are designed to have the same orientation (USB Symbol facing upwards).
Bottom mount USB connector: Soldered to bottom side of the PCB.
Mid Mount USB connector: Fits in to a hole cut in the PCB and is soldered to the bottom side of the PCB. As well as contacts it also has solderable feet which provide extra strength.
Top Mount USB connector: Soldered to the top side of the PCB.
USB evolution
| 1996 |
USB 1.0 |
1.56Mbits/s |
| 1998 |
USB 1.1 |
12Mbits/s |
| 2001 |
USB 2.0 |
480Mbits/s. This releases included the Mini USB |
| 2007 |
Addition of micro USB and On-the-Go (OTG) to 2.0 specification GCT developed and added mini & micro USB to portfolio |
On The Go (OTG) and A/B Types
USB OTG is a supplement to USB2.0 specification tailored for mobile applications, it augments the capability of existing mobile devices and USB peripherals by adding host functionality for connection to USB peripherals. Since USB technology has traditionally consisted of host-peripheral topology where the PC was the host and the peripheral was a relatively dumb device, these new features were needed to upgrade standard USB technology for mobile devices, new feature include:
New standard for small form factor USB connectors and cables.
The addition of host capability to products which have traditionally been peripherals only, to enable point to point connections.
The ability to be either host or peripheral (dual role devices) and to dynamically switch between the two.
Lower power requirements to facilitate USB on battery powered devices.
OTG Micro USB
Micro B receptacle accepts Micro-B plug and NOT Micro-A plug. Micro-AB receptacle accepts both Micro-A and Micro-B plugs.
With the introduction of the USB Micro Plug, a new plug receptacle called Micro-AB was also introduced. It can accept either a Micro-A plug or a Micro-B plug.
An OTG product must have a single Micro-AB receptacle and no other USB receptacles.
The OTG cable has a micro-A plug on one side, and a micro-B plug on the other (it cannot have two plugs of the same type). OTG adds a fifth pin to the standard USB connector, called the ID-pin; the micro-A plug has the ID pin grounded, while the ID in the micro-B plug is floating. The device that has a micro-A plugged in becomes an OTG A-device, and the one that has micro-B plugged becomes a B-device. The type of the plug inserted is detected by the state of the pin ID.
If you would like more information or would like to request samples, please contact GCT or view all our USB connectors