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Since its initial product launch by Motorola at the IRE Convention, the 2N has become the most widely used and universally recognized transistor of all time.

JEDEC registered parameters include outline dimensions, small-signal current gaintransition frequencymaximum values for voltage withstand, current rating, power dissipation and temperature rating, and others, measured under standard test conditions.

The JEDEC registration of a device number ensures particular rated values will be met by all parts offered under that number. So if you looking for an NPN transistor that could switch loads of higher current then 2NA might the right choice for your project. All variations have a beta or current gain h fe of at least in optimal conditions. Applications Can be used to switch high current upto mA loads It can also be used in the various switching applications.

2NA Pinout, Features, Equivalent & Datasheet

The value for this resistor can be calculated using the formula. Submitted by webmaster on 11 December How to use 2NA This transistor like all can be used either as a switch or as an amplifier.

The general specifications of the various variants are similar, with the biggest difference being the maximum allowable current and power dissipation. It is used in a variety of analog amplification and switching applications.


High frequency and microwave engineering. The exact specifications depend on the manufacturer, case type, and variation. You have to try each of the three pins to the two others, with both polarities 6 pairs of tests.


It is frequently used as a small-signal transistor, [4] [5] and 2222s remains a small general purpose transistor [6] of enduring popularity.

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Replacements for the 2N are commonly available now in the cheaper TO packaging, where it is known as the PN or P2N, which has similar specifications except for the lower maximum collector current. Junkbots, bugbots, and bots on wheels: In other projects Wikimedia Commons.

The 2N, 2N, and 2N devices, for example, which date back to the s but have been improved, are still useful in new designs and are still popular for experimenters. The 2N exhibits its forward gain beta peak at a lower current than the 2N, and is useful in amplifier traneistor with reduced I ce.

As the name suggests this resistor will limit the current flowing through the transistor to prevent it from damaging. The 2N is an NPN transistor that can only switch one-third the current of the 2N but has otherwise similar characteristics. TL — Programmable Reference Voltage.


The 2N is considered a very common transistor, [1] [2] trqnsistor and is used as an exemplar of an NPN transistor. Complete Technical Details can be found at the 2NA datasheet given at the end of this page. Find it and more at Jameco Electronics.

The Base-Emitter voltage of this transistor is 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. High frequency and microwave engineering.

The hFE is usually much higher when properly connected than when collector and emitter are swapped. Typical examples are the well known NPN and PNP industrial and military types, 2N and 2N, which have been used for over four decades and are still being used in many designs.


Retrieved from ” https: In actual circuit modifications might be required. Archived from the original on 14 April From Wikipedia, the traansistor encyclopedia. Note that the motor here draws about mA from the 12V power source, since the 2N has collector current rating upto mA this circuit is possible had it been a BC the transistor should have been burnt. To make things simple I have shown a simplified circuit to make a transistor as switch.

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What do you think? Billions of units have been manufactured over the past 45 years and there is continuing high volume annual production.

Single transistors are also available in several different surface mount packages, and a number of manufacturers market surface mount packages that incorporate several 2Ntype transistors 222a2 one package as 2222a array of transistors. It was originally made in the TO metal can as shown in the picture.

It is used in a variety of analog amplification and switching applications. Retrieved 26 March I have used a base voltage of 5V and a transisttor of 1K as current limiting resistor.

Therefore, it is important to refer to the datasheet for the exact part number and manufacturer. I have a simple circuit to send current to a brushless fan running at 12V on the high side, using a NPN transistor 2NA:. In other projects Wikimedia Commons.