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Is 2N2222 a BJT?

Is 2N2222 a BJT?

The 2N2222 is a common NPN bipolar junction transistor (BJT) used for general purpose low-power amplifying or switching applications.

What is the current gain of 2N2222?

100hFE
Product Information

Manufacturer Part No 2N2222
No. of Pins: 3Pins
Transition Frequency ft: 250MHz
DC Current Gain hFE: 100hFE
Operating Temperature Max: 200°C

How does a 2N2222 transistor work?

2N2222A is a NPN transistor hence the collector and emitter will be left open (Reverse biased) when the base pin is held at ground and will be closed (Forward biased) when a signal is provided to base pin. 2N2222A has a gain value of 110 to 800, this value determines the amplification capacity of the transistor.

What is the difference between 2N2222 and 2n2222A?

The 2n2222A is a slight bit better in terms of Vceo, Vcbo, Vebo. But if you are not planning on stressing the part (higher voltages, etc) both will work well, especially for simple switching and logic circuits. The 2n2222 part is the older style part which might be the reason they are being offered at a low price.

What is the need of a transistor in the fingertip switch experiment?

This is because, high skin’s resistance prevents enough current to flow through the circuit. So the only option we have is to amplify the tiny current flowing through the skin to a magnitude enough for an LED to glow. For that purpose, we have to use transistors.

What kind of transistor is a 2N2222?

What is 2N2222 Transistor? The 2N2222 is a common NPN bipolar junction transistor (BJT) used for general purpose low-power amplifying or switching applications. It is designed for low to medium current, low power, medium voltage, and can operate at moderately high speeds. It was originally made in the TO-18 metal package.

What’s the maximum voltage for a BJT 2N2222A?

The device’s maximum voltage tolerance (breakdown voltage) across its collector and base is 60 volts for 2N2222 and 75 volts for 2N2222A, with the emitters kept open. With their base open, the above tolerance across their collector and emitter leads is 30 volts for 2N2222 and 40 volts for 2N2222A.

What are the features of the 2N2222A pinout?

2N2222A Pinout Configuration Pin Number Pin Name Description 1 Emitter Current Drains out through emitter 2 Base Controls the biasing of transistor 3 Collector Current flows in through collector

What is the maximum power dissipation of a 2N2222A?

With their base open, the above tolerance across their collector and emitter leads is 30 volts for 2N2222 and 40 volts for 2N2222A. As expressed earlier, the maximum current that can be applied across the transistors collector and emitter, via a load is not more than 800 mA. Total power dissipation of the device should not exceed above 500 mW.