2SA854STPR

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2SA854STPR Application Field and Working Principle

A 2SA854STPR is a NPN silicon epitaxial transistor, categorized as bipolar junction transistor (BJT) single series. It is most commonly used in low frequency driver circuits and is suitable for audio amplifiers and high speed switching applications. The 2SA854STPR transistor has a small signal current amplification rating of 15. It is most effective when used to amplify AC signals because of its high cut-off current gain.

Features

The 2SA854STPR transistor has a maximum collector-emitter voltage of 100V and a maximum collector current of 600mA. The 2SA854STPR transistor is also equipped with a higher blocking voltage. It has a second breakdown avalanche resistant juncture that is capable of withstanding high voltage and current loads, making it more reliable in harsher environments. It is also used in high power output systems that require linear transfer characteristics. Additionally, it has a high collector to emitter breakdown voltage, making it suitable for use in high voltage switch power supplies.

Package Types

The 2SA854STPR transistor is available in two different packages. The first one is in a TO-39 package, which offers 4 pin connections and has a drain lead for easy soldering. The other is in a TO-220 package, which also offers 4 pin connections but also has a mounting tab for surface-mount applications.

Working Principle

The working principle of the 2SA854STPR transistor involves using electronic current to control the flow of electrical energy in a circuit. As an NPN transistor, it acts as a switch that can be opened and closed using either an input signal or the power supply. When a small current passes through the transistor’s base, the transistor allows current to flow in its collector side, thus amplifying the signal. When the base current is shut off, the transistor cuts off the current flow in the collector side and not allowing any further amplification. Additionally, the 2SA854STPR transistor also has a higher cut-off current gain than other NPN transistors, allowing it to be used as an amplifier for AC signals.

Applications

The 2SA854STPR transistor is most commonly used in low frequency driver circuits and audio amplifiers. It’s high blocking voltage makes it suitable for use in high power output systems like switch power supplies, wireless and radio frequency circuits, and high voltage amplifiers. In addition to these applications, the 2SA854STPR transistor is also used for high speed switching, linear transfer characteristics, and DC-DC converters.

Conclusion

In conclusion, the 2SA854STPR transistor is a reliable, high-performance NPN transistor that is suitable for a wide range of applications. Its high cut-off current gain, higher blocking voltage, second breakdown avalanche resistant juncture, and linear transfer characteristics make it ideal for audio amplifiers, high speed switching, and high power output systems such as switch power supplies. It is available in two different packages, making it versatile and suitable for any application.

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