USB Connector 2.0/3.0 Product Introduction

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USB, short for Universal Serial Bus, is an industry standard developed in the mid-1990s that defines the cables, connectors and communications protocols used in a bus for connection, communication, and power supply between computersand electronic devices.It is currently developed by the USB Implementers Forum (USB IF).It mainly has three series ,usb2.0/3.0/3.1,connector type has A type,B type, Mini A/B,Micro usb connector A/B ,C type.Above all Mini type is seldom used.


USB was designed to standardize the connection of computer peripherals (including keyboards, pointing devices, digital cameras, printers, portable media players, disk drives and network adapters) to personal computers, both to communicate and to supply electric power. It has become commonplace on other devices, such as smartphones, PDAs and video game consoles,psp usb cables,etc. USB has effectively replaced a variety of earlier interfaces, such as parallel ports, as well as separatepower chargers for portable devices.

The newly type c usb connectors,are designed to an industry standard that provides a sleek,slim design small enough for handheld devices and robust enough for industrial applications.The USB Type-C connector features reversible mating interface; the receptacle is designed to accept a plug in any direction, enabling easy, reliable mating. This connector supports a variety of diff erent protocols, and with the use of adaptors, it is backwards compatible to HDMI, VGA, DisplayPort, and other types of connections from the single USB Type-C port. We provide a distinctive electromagnetic interference (EMI) design on the back of the receptacle shell to help eliminate unwanted EMI leakage, as well as enhanced retention features, waterproof and splash proof options for better performance in rugged environments.

USB type A connector usually used in perconal computers,it’s the most widely used usb connectors.
USB type B connectors usually used for 3.5inch Mobile HD,printer machine and displayer.
Mini USB usually used for digital camera,digital video,Measuring instrument and disk enclosure.
Micro USB is the most common usb connector which is widely used in our mobilephone connectors.

  • Its shell material usually use zinc alloy/stainless steel with contact material Phosphor bronze,which with a very good EMI function.Contact Resistance is 30mΩ,Insulation Resistance is 750VAC for one minutes.The Operatioin Temperature range is around -55~125°C.It’s widely used for all the Audio equipment,Digital optical data link,PCs and laptops,Sound card,MD,Factory automation,Industrial machinery,Data centers.
  • The connection ways for usb connector are usually three types,smt type,pcb and solder type.
    The relevant hot sell product usb cable which is assembled by usb connectors,produced by Chinese top brand usb connector manufacturers  .The popular types for usb cables are USB 2.0 A male to Micro B Male cable,USB2.0A male to Mini B male cable.USB3.0 A male to micro B male(10pin )cable.USB 3.0 A male to A female cable,USB 2.0 A male to USB 2.0 C male cable.USB 3.1 C male to A female cable.
    The main features for 3.1 type c connectors are as below:
    1,the maximum data transmission speed reaches 10Gbps;
    2,support for back and frontconnection,mechanical life is 10000times;
    3,New interface design is about 8.4mm x 2.6mm in size, and the interface is very thin.
    4,USB Power Delivery,supported for charging.
  • Aarticle resource ：http://www.renhotecpc.com/knowledge/usb-connector-2-0-3-0-product-introduction/

The RJ45 Connector’s Product Knowledge Introduction

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RENHOTEC GROUP, Chinese RJ45 connector manufacturer for more than 12 years with ISO certified. We have rich experience in OEM and could provide suitable project plan with competitive price for customer. Now ,Let’s us introduce some knowledge of the RJ45 connectors.

RJ45 is a kind of information socket(communication terminal)connector in the wiring system, which is consists of a plug(connector, crystal head) and a socket(module).The plug has 8positions and 8 contacts. RJ is an abbreviation for Registered Jack, meaning "registered socket".In the FCC (United States Federal Communications Commission Standards and Regulations), RJ is the interface of the public telecommunication network,and the RJ45 of the computer network is the common name of the standard 8-bit modular interface.

RJ45 connector has 8 pins, which means an RJ45 cable contains 8 separate wires.You can see the eight different color wires, If you look closely at the end of an Ethernet cable. Four of them are striped, and the other four are solid colors . Usually, for the RJ series products, we can see xPyC, so what is it? Here below you can get the meanings:

P = Positions  C = Contacts

x = number of available Positions for Contacts which is the physical SIZE of the connector.

y = number of Contacts installed in the above size and the number of conductors in the cable.

For example:

1.6P6C is a 6 Position with 6 Contacts and wires. This also goes by the name RJ11

2..8P8C is a 8 Position with 8 Contacts and wires. This also goes by the name RJ45.

Category

The RJ series are basically named on the FCC standards and regulations. The numbers following the RJ represent the number of wires. Normally ,the RJ series have these kinds of types:

RJ11, RJ14, RJ25 telephone line interface (respectively for a pair, two pairs, three pairs),RJ45 Ethernet interface (network interface).

More classification as below:

1.Gender: Female/Male

2.Orientation: Vertical/Straight/180 degree/Side entry     Right Angle/90 degree/45 Degree

3.Terminal Type:Through-hole（DIP)/SMT Type

4.Port:Single Port/Muti-port:for example:1×1,1×2,1×4,1x6,1x8/2×1,2×2,2×3,2×6

5.Function:Shielded/Unshielded, and the shield has full metal shielded and half-cover shielded,which is with shrapnel or not.

6.With/without leds

7.With transformer/Magnetic or without

Wiring

RJ45 can be wired the cables in two different ways. One is named T-568A ,and the other is T-568B. The T-568B wiring scheme is the most common, but many devices support the T-568A wiring scheme as well. Some networking applications need a crossover Ethernet cable, which has a T-568A connector on the one end and  on the other for a T-568B connector. This kind of cable is regular used for direct computer-to-computer connections when there is no router, hub, or switch available.

These 2 wiring standards are listed below:

T-568A

1. White/Green (Receive +)

2. Green (Receive -)

3. White/Orange (Transmit +)

4. Blue

5. White/Blue

6. Orange (Transmit -)

7. White/Brown

8. Brown

 T-568B

1. White/Orange (Transmit +)

2. Orange (Transmit -)

3. White/Green (Receive +)

4. Blue

5. White/Blue

6. Green (Receive -)

7. White/Brown

8. Brown

 

Application

RJ series connectors are widely used in civil, industrial, medical, communications and other fields.In the Civilian areas, such as: telephone, network adapter, PC Notebook,Router/Switch, Wireless Router,Hubs, printers, security cameras, game consoles and other devices.

 

Article Source: http://www.renhotecpc.com/knowledge/the-rj45-connectors-product-knowledge-introduction/