Blank pcb boards components sourcing
Electronic components are the components of electronic components and small electric machines and instruments, which are often made up of several parts and can be used in similar products.Usually refers to electrical appliances, radio, instrumentation and some parts of the industry, such as capacitance, transistor, filament, spring, such as the general term.Common have diode etc.
Electronic components include resistors, capacitors, potentiometer, electron tubes, radiator, electromechanical components, connectors, semiconductor discrete devices, electronic devices, laser device, electronic display devices, optoelectronic devices, sensors, power supply, switch, micro motors, electronic transformers, relays, printed circuit board, integrated circuits, various types of circuit, piezoelectric crystals, quartz, ceramic magnetic materials, printed circuit substrate base board, special material and electronic glue process of electronic functions (with) products, electronic chemical materials and components, etc.
The international quality of electronic components has the CE certification of the European Union, UL certification of the United States, VDE and TUV certification of Germany and CQC certification of China and other domestic and foreign certifications to guarantee the quality of components.
The history of electronic components is a history of condensed electrons.Electronic technology is an emerging technology that began to develop at the end of the 19th century and the beginning of the 20th century.
In 1906, the American inventor De Forest Lee invented the vacuum triode (vacuum tube).The first generation of electronic products centered on the tube.In the late 1940s, the first semiconductor triode was born in the world. With its characteristics of small size, light weight, power saving and long life, it was quickly applied in various countries and replaced electron tube in a large range.In the late 1950s, the world's first integrated circuit, which integrated many transistors and other electronic components into a silicon chip, led to the development of smaller electronic products.Integrated circuits have rapidly developed from small scale integrated circuits to large scale integrated circuits and very large scale integrated circuits, thus enabling electronic products to develop in a direction of high efficiency, low consumption, high accuracy, high stability and intelligence.As the four stages of the development of electronic technology can fully explain the characteristics of the four stages of the development of electronic technology, the following four stages of the development of electronic technology from the four times of the development of electronic technology to explain the characteristics of the development of electronic technology.
The emergence and rapid development of the electronic component industry in the 20th century has changed the whole world and people's work and living habits.The development history of electronic components is actually the development history of electronic industry.
The emergence and rapid development of the electronic component industry in the 20th century has changed the whole world and people's work and living habits.The development history of electronic components is actually the development history of electronic industry.In 1906, American DE forrest invented vacuum triode to amplify the sound current of telephone.Since then, there has been a strong expectation that a solid-state device could be developed to serve as a lightweight, affordable and long-lived amplifier and electronic switch.In 1947, the birth of the point-contact germanium transistor opened a new page in the history of electronic devices.However, this kind of point contact transistor has the fatal weakness of unstable contact point in structure.The junction transistor theory has been put forward while the point contact transistor has been developed successfully, but the junction crystal pipe is really appeared until the single crystal with ultra-high purity and the type of conduction that can control the crystal arbitrarily.In 1950, the first germanium alloy transistor with practical value was born.The junction silicon transistor was born in 1954.Since then, the idea of a field effect transistor has been proposed.Material such as crystallization with zero defect and defect control technology, crystal was long and diffusion doping technique, pressure oxidation film preparation technology, corrosion and the emergence and development of lithography, a variety of excellent performance of electronic devices appeared, electronic components gradually from the era of vacuum tubes into the era of the transistor and a large, very large scale integrated circuit.Anchors form the semiconductor industry as a representative of the high-tech industry.
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