PN2222A,116 Discrete Semiconductor Products

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Transistor Type:	NPN
Current - Collector (Ic) (Max):	600mA
Voltage - Collector Emitter Breakdown (Max):	40V
Vce Saturation (Max) @ Ib, Ic:	1V @ 50mA, 500mA
Current - Collector Cutoff (Max):	10nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce:	100 @ 150mA, 10V
Power - Max:	500mW
Frequency - Transition:	300MHz
Operating Temperature:	150°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-226-3, TO-92-3 (TO-226AA) (Formed Leads)
Supplier Device Package:	TO-92-3
Base Part Number:	PN2222A

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PN2222A,116 Application Field and Working Principle

Transistors are semiconductor devices which are used in a wide variety of electronic circuits to amplify, switch and combine signals. The PN2222A,116 transistor is a popular bipolar junction transistor (BJT) with a small signal current gain of 110. The PN2222A,116 is a single PNP transistor manufactured by STMicroelectronics for general use in a variety of circuit designs and applications.

General Information

The PN2222A,116 is a PNP transistor that has a nominal power dissipation rating of 500mW, with a maximum power dissipation rating of 625mW. The transistor is available in a TO-92 plastic package that has a single pinout for the collector, base and emitter pins. It should be operated with a supply voltage range between 6-40V DC. The transistor can handle peak collector currents of up to 600mA and average collector currents of up to 500mA.

Application Fields

The PN2222A,116 transistor is most commonly used as a switch or amplifier in a variety of electronic applications such as:

• RF amplifiers
• Switching applications
• Audio amplifiers
• High-frequency circuits
• Small signal amplification
• Logic circuits
• Automotive applications

Working Principle

In order to understand how the PN2222A,116 transistor works, it is important to understand the basic working principle of a transistor. A transistor is essentially a three-terminal device, consisting of two p-type semiconductor materials in contact with one n-type material. The two p-type materials are the collector and the base, while the n-type material between them is called the emitter. When a voltage is applied to the base, it controls the current that flows between the collector and the emitter terminal. This current flow causes a voltage drop across the collector-emitter junction, Here, the current flowing through the base is controlled by the voltage applied to it.When an input voltage is applied to the base of the PN2222A,116 transistor, the voltage drop which occurs at the collector-emitter junction is given byVCE = VCC − I C R C ,where VCC represents the supply voltage, IC is the collector current and RC is the collector resistance.When the PN2222A,116 transistor is used as an amplifier, the voltage gain is given byα VCE = β DC I C R C ,where βDC is the DC current gain of the transistor. The PN2222A,116 has a DC gain of 110 which provides a good voltage gain when operating in linear mode.

Conclusion

The PN2222A,116 transistor is a widely used single PNP transistor which is useful in a variety of circuit designs and applications. It has a high DC gain and can handle both peak and average collector currents of up to 600mA and 500mA respectively. The transistor has a nominal power dissipation rating of 500mW and a maximum power dissipation rating of 625mW. It is most commonly used as a switch or amplifier in RF amplifiers, switching applications, audio amplifiers, high-frequency circuits, small signal amplification, logic circuits and automotive applications. Understanding and applying the working principle of the PN2222A,116 transistor can help designers get the best performance from their circuit designs and applications.

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