Datasheet contains the design specifications for product development. Datasheet contains preliminary data; supplementary data will be. 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.

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This is the picture of the datasheet for the pins: However one important thing to notice is the Base resistor a. Try not to touch the transistor while testing it because temperature will change the voltage readings. So if you looking for an NPN transistor that could switch loads of higher current then 2NA might the right choice for your project.

To make things simple I have shown a simplified circuit dwtasheet make a transistor as switch. Applications Can be used to switch high current upto mA loads It can also be used in the various switching applications. You have to try each of the three pins to the two others, with both polarities 6 pairs of tests.

ST Microelectronics

Note that the motor here draws about mA from the 12V power dataheet, since the 2N has collector current rating upto mA this circuit is possible had it been a BC the transistor should have been burnt.

This is true of almost all modern transistors a few are made more symmetrical.

Complete Technical Details can be found at the 2NA datasheet given at the end of this page. Am I missing something here? I am trying 2222x figure out what is going on here. You can have up to 3 types of configurations. Most 2Ns have the orientation which your diagram shows, where if the flat side is facing you, the pins are E-B-C datqsheet. How to use 2NA This transistor like all can be used either as a switch or as an amplifier.


In actual circuit modifications might be required. I don’t think so – throw it in the bin. The situation worsen when all these china fake transistors crowded the whole market, there are no standardization at all. When I apply a voltage between the pin 1 to 3, as soon as the voltage rises over about 8V, the current starts to eatasheet, even when the base has no voltage pulled down or floatingand the transistors gets pretty hot.

The Base-Emitter voltage of this transistor is 6V so you just have datasheet supply this voltage across the base and emitter datashet 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. I have a simple circuit to send current to a brushless fan running at 12V on the high side, using a NPN transistor 2NA:.

I have a simple circuit to send current to a brushless fan running at 12V on the high side, using dataeheet NPN transistor 2NA: This transistor will make it forward biased and thus closes the connection between collector and emitter.

When this transistor is fully biased then it can allow a maximum of mA to flow across the collector and emitter.

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

Absolute maximum rating for emitter-base voltage is 6V hence the E-B junction broke down and started conducting. Datazheet transistor like all can be used either adtasheet a switch or as an amplifier. Spehro Pefhany k 4 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. It looks like a “diode”. What do you think? Thank you for your interest in this question.


To distinguish collector from emitter, you look at the voltage shown in the diode function with the one successful test that found the datasheett. Would you like to answer one of these unanswered questions instead?

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2NA Pinout, Features, Equivalent & Datasheet

The base will show a diode connection to both other pins, in only one polarity. Submitted by webmaster on 11 December But there are two important features that distinguish both. Zuofu 3, 2 15 The slightly lower of the two voltages will correspond to the collector-base dataseetand the other will be the emitter-base junction. 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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ST Microelectronics – datasheet pdf

As the name suggests this resistor will limit the current flowing through the transistor to prevent it from damaging. If I set up the circuit for a quick test, it seems that the datasheet or xatasheet transistor has the pins swapped. TL — Programmable Reference Voltage. Hence the 2N pin-out is sadly not standardized.

Javier Loureiro 1 7 The hFE is usually much higher when properly connected than when collector and emitter are swapped. With it wired the wrong way round the emitter is more positive than the collector and the base is reverse biased. I have used datahseet base voltage of 5V and a value of 1K as current limiting resistor. No other pin will show that.