2SC4140

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The 2SC4140 is an NPN transistor, which belongs to the single bipolar junction transistors (BJT) category. It is among the more powerful transistors, as it has both high current collector ratings, as well as the high frequency performance. This makes the 2SC4140 relatively versatile, since it can be used in many different applications.

The 2SC4140 features a collector current rating of 0.3 A, with an emitter current dissipation power of 1 W. It operates at a maximum collector-base voltage of 30 V and a maximum collector-emitter voltage of 25 V. The transition frequency at which this transistor offers its peak performance is approximately 200MHz.

Designed to work in the industry, consumer, and commercial applications, the 2SC4140 can be found in a variety of electronics. These include especially audio amplifiers and power supplies, but its functionality does not end there. Motor control systems, digital circuits and electronic measurement equipment, such as oscillometers, are a few more examples of places where this transistor can be found.

The 2SC4140’s principle of operation is based on the principles of the PN junction diode. It uses the flow of electrons and holes through the PN junction and the junction\'s current-voltage characteristics, to amplify weak signals. When a small amount of current is applied to the base of the transistor, a much larger current is allowed to flow through the collector and emitter terminals. This phenomenon is known as current gain, which is the ratio between the collector current and the base current. The current gain of the 2SC4140 can be up to 120.

In summary, the 2SC4140 is a single bipolar junction transistor (BJT) with high performance. It has both high current and frequency ratings, making it suitable for a broad range of applications, but especially for audio amplifiers and power supplies. The transistor\'s working principle is based on the PN junction diode and it features a current gain of up to 120.

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