The material for semi-conductors usually has the resistance amid the resistance of a conductor and a non-conductor. Changes in temperature or the part of “impurities” also change the resistance.

The expression “impurities” refers to the other substances mixed to the material. The final mixture characterizes the semiconductors as diodes of type-n or type-t.

They manufacture diodes as well as transistors combining these kinds of semiconductors. Now silicon is eventually turning into the most actual substance for manufacturing semiconductors.

In order to keep the process of electrical current in only one sense diodes are applied. They are produced of semiconductor substance. In every diode there is a component created of positive and negative constructions (p- and n-) and of so-called barrier level (pn-transfer). Diodes produce electrical schemes converting between direct and alternating electrical current. Because that diodes make current stay just in a single sense only a part of the series or cycle passes by. Specialists name such a connection a rectifier.

LED (light diodes) is one more type of diodes. Such diodes are used when it's a task to create light at small voltages and eventually make no heat. Today they have LED light diodes as the light showing the standby state of different electronic equipment.

Moore's law led to the popularization of thyristors production. Lithography is the most important side of producing different power semi-conductor equipment at lower price. Concerning optical lithography, it eventually leads to the increase of alternate technologies because it has reached its physical limit. It is now quickly being replaced by more up-to-date ultraviolet lithography and nano-imprint lithography. Read the rest of this entry »

Tags: diod, diodes, power semiconductor devices, semiconductor, thyristor, voltage sensor

Quasi-conductors are considered to be a special kind of chemical elements. In the first time that unique class was discovered in the 1890’s but more completely it started to be discovered just after the First World War in Europe and in Soviet Union. Russian physicists carried out lots of experiments. The results showed that semiconductors can help to generate the fluctuations and maintain them. There was no opportunity to create some sophisticated devices as igct. The most considerable event in the history of semiconductor devices was the invention of the first transistor by Bell corporation in 1949. That was the beginning of the era of semiconductor technologies.

A lot of scientists carry out a great deal of experiments simply to gain more knowledge about such characteristic of semiconductors as stimulated radiation. First laser device was created with utilizing of semiconductors. The first version was based on p - n barriers, the latest ones - on heterojunction.

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Tags: current sensors, diodes, fuses, igbt modules, power resistors, semiconductor assembly