2222A TRANSISTOR DATASHEET PDF

NPN Silicon Epitaxial Planar Transistor for. Switching and Amplifier Applications. • RoHS compliance. Mechanical Data. Case: SOT, Plastic Package. The 2N is a common NPN bipolar junction transistor (BJT) used for general purpose depend on the manufacturer, case type, and variation. Therefore, it is important to refer to the datasheet for the exact part number and manufacturer. PNA. SMALL SIGNAL NPN TRANSISTOR. PRELIMINARY DATA s. SILICON EPITAXIAL PLANAR NPN. TRANSISTOR s. TO PACKAGE SUITABLE FOR.

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Views Read Edit View history. Would I reuse it? Every transistor has a gain h FE associated with it, which can be used to amplify voltage or current.

PN2222A Datasheet, Equivalent, Cross Reference Search

Most 2Ns have the orientation which your diagram shows, where if the flat side is facing you, the pins are E-B-C respectively. Therefore, it is important to refer to the datasheet for the exact part number and manufacturer.

As the name suggests this resistor will limit the current flowing through the transistor to prevent it from damaging. Am I missing datasheft here?

However one important thing to notice is the Base resistor a. The 2N is considered a very common transistor, [1] [2] [3] and is used as an exemplar of an NPN transistor. If it is to replace a shorted transistor, we will never know if both are the same ebc configuration between your new 2N and the old 2N Learn to keep an eye open for the following transistors, as they’re among the most useful, inexpensive, and popular types: This is true of almost all modern transistors a few are made more symmetrical.

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Spehro Pefhany k 4 Thank you for your interest in this question. Transistor as Amplifier Another Common application of a Transistor is as amplifiers.

The resistor R1 is called the Base resistor and is very important to drive a transistor, it limits the base current and failing to use one might damage the transistor permanently.

ST Microelectronics – datasheet pdf

However this 2222z of amplifiers have many drawback and if you are looking for some serious amplification applications then you should look into Op-Amps which are nothing but a package of many transistors put to gather with amplification as its sole purpose. KSPA has a gain value of tothis value determines the amplification capacity of the transistor. Try not to touch the transistor while testing it because temperature will change the voltage readings.

It is frequently used as a small-signal transistor, [4] [5] and it remains a small general purpose transistor [6] of enduring popularity.

The Base-Emitter voltage of this transistor 22222a 6V so you just have to supply this voltage across the base and emitter of the transistor to induce a base current into the transistor.

To bias a transistor we have to supply current to base pin, this current I B should be limited to 5mA. To make things simple I have shown a simplified circuit to make a transistor as switch.

It was originally made in the TO metal can as shown in the picture. No other pin will show that.

Build your teansistor low-power transmitters: The general specifications of the various variants are similar, with the biggest difference being the maximum allowable current and power dissipation. The resistor R2 is used to limit the current though the collector of the transistor and dagasheet not mandatory. The vales of the Resistor in the above image are only for reference and are not accurate. To bias a transistor we have to supply current to base pin, this current I B should be limited to 5mA.

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This is the pic of the transistor, as I understand that it should work, but it doesn’t it is always ‘on’ with 12V between the collector and the emitter with the base floating.

ST Microelectronics

This transistor will make it forward biased and thus closes the connection between collector and emitter. KSPA 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.

The exact specifications depend on the manufacturer, case type, and variation. Single datahseet are also available in several different surface mount packages, and a number of manufacturers market surface mount packages that incorporate several 2Ntype transistors in one package as an array of transistors.

Would you like to answer one of these unanswered questions instead?

Javier Loureiro 1 7 If I set up the circuit for a quick test, it seems that the datasheet or the transistor has the pins swapped. The 2N, 2N, and 2N devices, for example, which date back to the s but trwnsistor been improved, are still useful in new designs and are still popular for experimenters.

Another Common application of a Transistor is as amplifiers. In actual circuit modifications might be required.

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