Introduction to PN2222, Working, Pinout, Features

Hello, readers welcome to the new post. In this post Introduction to PN2222. The transistor is an electronic component that is the main part of electronic switches and amplifiers to perform the switching operation and signal amplification. There are two main types of transistors NPN and PNP on the basis of their doping level. PN2222 is a general-purpose NPN transistor that also comes with 3 pinout base emitter and collector.

In this post, we will discuss differnt parameters to learn the details overview of PN2222. So let’s get started with Introduction to PN2222.

Introduction to PN2222

• PN2222 is a very commonly used NPN-configured BJT transistor having TO-92 packaging.
• It is a general-purpose component that is the main part of amplifier and switch applications.

• It is the best option for electronic projects since comes in quality packing at less cost so it is a fine option for projects and electronic devices.
• The highest collector curent for this transistor is about six hundred milliamperes. This current value makes it more effective than other To-92 packaging that has the highest value of collector current about 100mA to 200mA.
• The value of collector to emitter volts is about thirty volts with a transition frequency of about two fifty megahertz.
• It in the form of a switch can operate a load value of about six hundred milliamperes so it is used to operate high-power LEDs, relays, motors, and high-power transistors.
• It comes in two versions PN2222 and PN2222A. The second version comes with high values of maximum ratings than previous

PN2222 Pinout

• Like other transistors, it also has three pinout
• Base: It is a control pin that regulates the transistor biasing and works as a tap on and off the device.
• Collector: This pin provides the current to load and is attached to the load side
• Emitter: Curent get out from this pin

PN2222 Features

• The main features of PN2222 are explained here
• The highest value of operating temperature is about minus fifty-five to one fifty centigrade

• The value of DC curent gain is about 30 to 300
• The value of the highest transition frequency is about two fifty megahertz
• The highest collector dissipation value is six twenty-five milliwatt
• The value of emitter to base volts is about five volts
• The highest value of collector-to-base voltage is sixty volts
• The highest value of the collector curent is about six hundred milliampere
• It is NPN configured transistor and comes in TO-92 packaging

2n2222 NPN Transistor Electrical Features

• Gain (hFE)= 100-300
• Collector-emitter saturation voltage= 0.3-0.5 volts
• Collector current= 0.1 amps
• Thermal resistance junction-to-ambient air=: 80°C/W
• Collector emitter breakdown voltage (V(beo)ce): 50 volts
• DC gain-collector to emitter (here): 100-300
• Collector-emitter saturation voltage (Vce sat): 0.5 volts
• DC Current gain: 60-150
• Collector power dissipation =0.5 watts
• Frequency response: 0-1000 MHz
• Operating temperature: -55 to +150 C
•  (Tstg): -55 to +150
• Power transistor dissipation (Tc): 1 watt
•  Thermal resistance junction-to-case (Rjc): 90°C/W
• Thermal resistance junction-to-ambient air (Rja): 80°C/W
• Collector-emitter voltage (Vce): 0.3 volts

PN2222 Equivalent

• PN2222A
• BC337
• BC338
• 2N3019
• 2N5551
• 2N2222A
• 2N2222
• S8050
• 2N4032
• 2N1711A,
• 2N3107

MAXIMUM RATINGS of PN2222

How to Use PN2222

• PN2222 was created for general-purpose applications at the start so it is considered the main part of electronic switches and amplfier and some other general-purpose applications

• It has the ability to operate the load that has a value of ratings about six hundred milliampere
• It is considered as part of RF applications it has a high value of transition frequency. Its operation is like the other types of BJT transistors.

Difference between PN2222 and PN2222A

• Here are some points explained to find the difference between PN2222 and PN2222A
• These two are the same transistor but there is a high value of maximum absolute for PN2222A.
• The P2N2222 has a different order of pinouts than the metallic casing 2N2222, with its emitter and collector connections switched; other plastic-case transistors also have different pinouts.
• Here are main differences between PN2222 and PN2222A are explained

Parameters	PN2222	PN2222A
Value of collector to base volts	60 Volts	75 Volts
Storage Temperature value	-55 °C to 150 °C	-55 °C to 150 °C
Junction Temperature value	150 C	150 C
Power Dissipation at Collector	625 mW	625 mW
Dc Current Gain Highest value	300	300
Output Capacitance Value	8 pF	8 pF
Ic Value	600 mA	1 A
Emitter to the base voltage value	5 Volts	6 Volts
Collector to Emitter value of volts	30 Volts	40 Volts

 

PN2222 Applications

• The main applications of PN2222 are explained here
• It is used in differnt types of robotics projects and embedded systems
• It is the main part of the Darlington pair
• It is used in RF circuits since it can handle high-frequency values
• Its uses in Inverters designs and projects
• It is part of projects that need less power to operate
• It used as an audio amplifier
• Used in motor driver and switch circuits

Difference between PN2222 and 2N2222?

• PN2222 is less expensive than 2N2222. The packaging of 2N2222 is metallic while 2N222 is a plastic case. The temperature rating and power dissipation of 2n2222 are higher than PN2222

2N2222 Amplifier Circuit

• Here you can see the amplifier circuit of 2N2222.
• Here we use a common emitter configuration to make the circuitry of the 2n2222 amplifier. this circuitry provides the highest value of gain

2N2222 As a Switch

• Here we have designed a switch circuit of 2n2222
• In this circuitry, the input resistance works as the current limit and operates the circuit, and 2nd resistance operates the LED
• If we close the switch transistor gets a signal and starts operating and the resistor value controls the ON and OFF of the LED. If the supply is off transistor is off the circuit.

BC547 vs 2N2222

• The 2N2222 is high power transistor then BC547
• 2N2222 is metaled enclosed for TO-18 packaging while BC547 is plastic
• BC547 has TO-92 packaging and 2N2222 also has the same packaging
• The 2N2222 pinout sequence for 2N2222 is emitter, base, and collector and for BC547 is collector base and emitter
• The CB volts for 2N2222 is sixty volts and for BC547 is fifty volts
• collector to emitter volts is thirty for 2N2222 and 45 volts for BC547
• Voltage for VEB is five for 2N2222 and for BC547 is six volts
• IC current of 2N2222 is 800mA and for BC547 is 100mA
• Dc gain of 2N2222 is 75 to 300 and for BC547 is 110 to 800HFe

Can I use BC547 instead of 2N2222?

Yes, we can use but note then 2N2222 is a high power component than BC547.

The 2N222 transistor VCB value is 60 volts and BC547 has 50 volts. But BC547 has a high VCE voltage that is 45 volts then 30 volts for 2N2222.

The VEB is high for BC547 is 6V and for 2N2222 is five volts

The 2N222 has 800mA for IC and BC has 100mA.

The power dissipation rating is the same for both which is 500mW.

Faqs

What type of transistor is PN2222A?

Type	Description
Transistor Type	NPN
Current – Collector (Ic) (Max)	800 mA
Voltage – Collector Emitter Breakdown (Max)	40 V
Vce Saturation (Max) @ Ib, Ic	1V @ 50mA, 500mA

Can the PN2222 transistor be used for high-power applications?

• The PN2222 transistor is not used for high-frequency applications. It is used for low to moderate-power applications since it is limited to current handling features normally from 600mA to 800mA.