Symbol. Parameter. Value. Unit. VCBO. Collector-Emitter Voltage (IE = 0). V. VCEO. Collector-Emitter Voltage (IB = 0). V. VEBO. Emitter-Base Voltage (IC. SMBT A. 1. Oct NPN Silicon Switching Transistor. • High DC current gain: mA to mA. • Low collector-emitter saturation voltage. Datasheet contains the design specifications for product development. Datasheet contains preliminary data; supplementary data will be.

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The JEDEC registration of a device number dataheet particular rated values will be met by all parts offered under that number. Billions of units have been manufactured over the past 45 years and there is continuing high volume annual production. Home Questions Tags Users Unanswered. Single transistors are also available in daatsheet different surface mount packages, and a number of manufacturers datqsheet surface mount datxsheet that incorporate several 2Ntype transistors in one package as an array of transistors.

This transistor like all can be used either as a switch or as an amplifier. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. As the name suggests this resistor will limit the current flowing through the transistor to prevent it from damaging.

Submitted by webmaster on 11 2222x It is designed for low to medium currentlow powermedium voltageand can operate at moderately high speeds. It was originally made in the TO metal can as shown in the picture. They’re listed together because they’re complementary transistors. Archived from the original on 14 April The BC is a low voltage, low current, general-purpose switching transistor in a TO package.

Build your own low-power transmitters: You have to try each of the three pins to the two others, with both polarities 6 pairs of tests.

Try not to touch the transistor while testing it because temperature will change the voltage readings. However one important thing to notice is the Base resistor a.


To make things simple I have shown a simplified circuit to make a transistor as switch.

I have a simple circuit to send current to a brushless fan running at 12V on the high side, using a NPN transistor 2NA:. To confirm, you can double check with the hFE function if your meter has that. I have used a base voltage of 5V and a value of 1K as current limiting resistor.

Replacements for the 2N are commonly available 2222a 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. This page was last edited on 25 Octoberat The 2N exhibits its forward gain beta peak at a lower current than the 2N, and is useful in amplifier applications with reduced I ce.

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. By using this site, you agree to the Terms of Use and Privacy Datasheeet.

But there are two important features that distinguish both. When this transistor is fully biased then it can allow a maximum of mA to flow across the collector and emitter. This transistor will make it forward biased and thus closes the connection between collector and emitter. So if you looking for an NPN transistor that could switch loads of higher current then 2NA might the right choice for your project.

ST Microelectronics

It is frequently used as a small-signal transistor, [4] [5] and it remains a small general purpose transistor [6] of enduring popularity. The 2N, 2N, and 2N devices, for example, which date back dstasheet the s but have been improved, are still useful in new designs and are still popular for experimenters.

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. 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.


The maximum amount of current that could flow through the Collector pin is mA, hence we cannot connect loads that consume more than mA using this transistor. It looks like a “diode”.

Use dmy dates from July Commons category link is on Wikidata. Retrieved from ” https: Complete Technical Details can be found at the 2NA datasheet given at the end of this page. Views Read Edit View history.

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It is used in a variety of analog amplification and switching applications. Wikimedia Commons has media related to 2N TL — Programmable Reference Voltage.

This is the pic of the transistor, as I understand that 222a2 should work, but it doesn’t it is always ‘on’ with 12V between the collector and the emitter with the base floating.

Am I missing something here? With it wired the wrong way round the emitter is more positive than the collector and the base datasbeet reverse biased. Would you like to answer one of these unanswered questions instead? Thank you for your interest in this question.

PN2222A . Datasheet. Equivalente. Reemplazo. Hoja de especificaciones. Principales características

This is the picture of the datasheet for the pins: In actual circuit modifications might be required. The exact specifications depend on the manufacturer, case type, and variation. Learn to keep an eye open for the following transistors, as they’re among the most useful, inexpensive, and popular types: