In which device 2N2222 transistor is used?

2N2222 NPN transistor has been commonly used for switching and very high frequency(VHF) amplifier applications. It is made of silicon material and specially designed for low voltage, low to medium current and low power amplifier applications.

How do you tell which pin is which on a transistor?

Pin Identification of Transistors In plastic casing, one side of the transistor is Flat which is the front side and the pins are arranged serially. To identify the pins, keep the front flat side facing you and count the pins as one, two etc. In most NPN transistors it will be 1 (Collector), 2 (Base) and 3 ( Emitter ).

What is the function of 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.

What are the three pins called on the transistor?

In general, all transistors have three pins: base, collector, and emitter.

How do transistors work?

A transistor works when the electrons and the holes start moving across the two junctions between the n-type and p-type silicon. The small current that we turn on at the base makes a big current flow between the emitter and the collector.

What does N and P mean in transistor?

Transistors are built by stacking three different layers of semiconductor material together. A semiconductor material with extra electrons is called an n-type (n for negative because electrons have a negative charge) and a material with electrons removed is called a p-type (for positive).

How many pins are in a 2N2222 NPN transistor?

Pin Configuration of 2N2222 NPN Transistor: This 2N2222 NPN transistor has three pins emitter, base, and collector. These pins are used in the circuit for turning on or off the transistor.

What are the parts of the 2N2222 package?

2N2222A in metal TO-18 package with the emitter, base and collector identified as E, B, and C respectively. Cross section of 2N2222 in metal TO-18 package, showing connection wires between external pins and die.

What kind of metal is the 2N2222 made of?

It was originally made in the TO-18 metal can as shown in the picture. The 2N2222 is considered a very common transistor, and is used as an exemplar of an NPN transistor.

What is the gain value of a 2N2222A transistor?

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.