#2n2222 transistor how to#

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 2n2222A is a slight bit better in terms of Vceo, Vcbo, Vebo.

What is the difference between 2n2222 and 2n2222a?īoth parts are about the same.

It was originally made in the TO-18 metal package. It is designed for low to medium current, low power, medium voltage, and can operate at moderately high speeds. The 2N2222 is a common NPN bipolar junction transistor (BJT) used for general purpose low-power amplifying or switching applications. Its segments include Automotive, Consumer, Computer and Communication Infrastructure (ACCI) Industrial and Multisegment Sector (IMS), and Wireless. is an independent semiconductor company that designs, develops, manufactures and markets a range of semiconductor products used in a variety of microelectronic applications, including automotive products, computer peripherals, telecommunications systems, consumer products, industrial automation and control systems. If you want to get best performance with 2N2222 transistor, you should not drive load more than 600mA, the collector-emitter voltage of the transistor must in under 40V, and use a suitable base resistor which provides the required current at the base of the transistor, what's more, do not store or operate the transistor below -55 centigrade and above +150 centigrade. It can also be used as a small audio amplifier or to drive a small speaker in electronic projects. 2N2222 can also be used to amplify audio signals, for example, it can be used in audio preamplifier stages and also in audio amplifier stages. The working of this circuit is exactly the same as you have seen in the last section except dc motor is used.ĭue to its good features, 2N2222 can be used in wide variety of electronic projects, the large 600mA collector current makes this transistor ideal to be used in your electronic projects to control relays, high power LEDs, other high power transistors and ICs at the same time. We can use Arduino Uno or any microcontroller to control this circuit. This circuit controls a dc motor through a transistor that is used as a switch. In this example, a 2N2222 NPN transistor is used in common emitter configuration mode.

Now, if you apply a 5 volts logic at base input, you will see LED glowing. Otherwise, it will remain off.Įxample of Interfacing DC motor as a switch using Arduino.

Also, use a 220Ω resistor between the switch and base terminal.

10kΩ resistor will limit the current below the forward current requires to turn on an LED.

If you use 10kΩ LED will not glow when you turn on the switch due to low current passing through the LED.

By mistake, 10kΩ used as a current limiting resistor with an LED.

Connect an LED with an emitter terminal through a 220-ohm resistor.

5 volts with collector terminal through 220ohm resistor. In this example circuit, we attach a push-button with a base terminal. Small Signal Bipolar Transistor, 0.8A I(C), 30V V(BR)CEO, 1-Element, NPN, Silicon, TO-206AA, CASE 22-03, TO-18, 3 PIN Small Signal Bipolar Transistor, 0.8A I(C), 30V V(BR)CEO, 1-Element, NPN, Silicon, TO-18, Small Signal Bipolar Transistor, 0.8A I(C), 40V V(BR)CEO, 1-Element, NPN, Silicon, TO-18, TO-18, 3 PIN

Small Signal Bipolar Transistor, 0.8A I(C), 30V V(BR)CEO, 1-Element, NPN, Silicon, TO-206AA, HERMETIC SEALED, METAL, TO-18, 3 PIN TRANSISTOR Si, SMALL SIGNAL TRANSISTOR, TO-18, BIP General Purpose Small Signal So, you should be careful when using P2N2222A as a substitude of 2N2222A in your circuit. And their biggest difference is their pinout, as showned in the figure below: As a replacements for the 2N2222, they are commonly available in the cheaper TO-92 packaging, which has similar specifications except for the lower maximum collector current. Speaking of which, there is another ic that similar and easy to confused with 2N2222, that is PN2222/P2N2222. Down below is the feature differences between them. Like 2N2222, 2N2222A is also an NPN transistor.

Switching many loads at the same time (Thanks to its 600mA output in a small TO-92 package).

#2n2222 transistor how to#

How to Safely Long Run 2N2222 in a Circuit It is most common in the market due to the cost efficiency and the smaller size.

The major functional area of 2N-2222 is enclosed in a TO-18 package.

It can be used for amplification of analog signals as well as switching applications. Hope this blog is helpful to you.ĢN2222 is the most common NPN bipolar junction transistor available in the market. In today's blog, we are going to discuss 2n2222's pinout, applications, equivalents, example circuits and where and how to use this device, etc.