Specification of USB connector

Before we go to understand the specifications of the USB connector (1.1/2.0), let's first briefly understand the USB connector. Generally, USB connector products refer to a connector product used for communication between various electronic devices. However, after the new regulations are added and the old regulations are renamed, many people are more and more confused about the type of USB connector. So what are the specifications of the USB link (1.1/2.0)? Konnra connector engineer will introduce you to the knowledge of USB connector (1.1/2.0) specification in detail.
Micro USB
1. Specification of USB 1.1 connector
USB 1.1 is the first USB product specification that has existed for nearly two decades. The maximum data rate for this specification is 12 megabits per second (12 Mbits/s), or approximately 1.5 megabytes per second (MB/s). The purpose is to replace various ports and connectors with a USB interface, including serial, parallel, PS/2, etc. In addition, the USB 1.1 connector has been connected to the Standard-A flat and rectangular slots on the computer. Although it works well, the limitation is speed.

2, about the specification of USB 2.0 connector

The USB 2.0 (aka Hi-Speed USB) specification was released in 2000, with a maximum data rate of 480 Mbits/s or 60 MB/s. The introduction of data storage devices enabled data storage devices for the first time, and designers have improved options on poorly performing USB 1.1. The emergence of the USB 2.0 specification is to make the cables and ports more compatible with the size of the connected device, so that shrinking mobile phones, digital cameras and other handheld devices have smaller cables, including but not limited to Micro-A and Micro-B connections Device.




评论

发表评论

此博客中的热门博文

What is the coaxial connector?

图片
Coaxial connectors are used to transmit RF signals. They have a wide transmission frequency of up to 18 GHz or higher and are mainly used for radar, communication, data transmission and aerospace equipment. The basic structure of the coaxial connector includes: a center conductor (a positive or negative center contact); a dielectric material outside the inner conductor, or an insulator, and the outermost is an outer contact, which serves as a shield outside the coaxial cable. The same function of the layer, that is, the signal transmission, the grounding element as a shield or circuit. The coaxial connectors are mainly divided into: SMA, SMB, BNC, TNC, SMC, N-type, BMA, and the like. Male: Male (plug), thread inside, inside is the needle. Such as TNC (M). Female: Female (socket), threaded outside, inside is a hole. Such as SMA (F). RP: Reverse Polarity means that the head and the inside of the needle are opposite. Bulkhead: It is the joint of the lockable screw on the board and...
阅读全文

The optical fiber connector

图片
A fiber optic connector is a detachable (active) connection between an optical fiber and an optical fiber. The two end faces of the optical fiber are precisely butted together so that the optical energy output from the transmitting optical fiber can be coupled to the receiving optical fiber to the maximum extent. It also minimizes the impact on the system due to its involvement in the optical link, which is a basic requirement for fiber optic connectors. To some extent, fiber optic connectors affect the reliability and performance of optical transmission systems. Basic introduction A connecting device for re-plugging between optical fibers, also called a fiber optic movable joint. The main performance parameters (and typical values) are: insertion loss (<0.5dB), plug-and-repeat repeatability and interchangeability between connectors (500 changes). When used in a large-capacity high-speed transmission system, reflection is also required to be small. Introduction Optical fiber con...
阅读全文

The working principle of IDC termination method

图片
Introduction and background IDC termination method is often used in various applications. This termination technology has been successfully applied to a variety of industries where multi-contact mass termination and very economical. Multi-point cable termination can be achieved with insulation displacement  connectors (IDC)  because the termination force is relatively small (usually a few pounds, while crimping is hundreds of pounds). In addition, another advantage of this technology is that it eliminates the stripping operations required in crimping. Therefore, in many electronic applications, such large-scale terminations are often used when using multi-strand cables. In many cases, multiple flat cables are used for this very economical large-scale termination. However, discrete multi-strand cables can also be used to reduce costs because the steps of cable stripping preparation and terminal insertion are eliminated. This type of application provides rapid assembly of high-d...
阅读全文