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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But there are two important features that distinguish both. To make things simple I have shown a simplified circuit to 222a2 a transistor as switch.

ST Microelectronics

Spehro Pefhany k 4 It looks like a “diode”. Javier Loureiro 1 7 Am I missing something here? 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. datashert

Home Questions Tags Users Unanswered. So if you looking for an NPN transistor that could switch loads of higher current then 2NA might the right choice for your project. 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 Hence the 2N pin-out is sadly not standardized.


This is the picture of the datasheet for the pins: Absolute maximum rating for emitter-base voltage is 6V hence the E-B junction broke down and started conducting. This transistor will make it forward biased and thus closes the connection between collector and emitter. To distinguish collector from emitter, you look at the voltage shown in the diode function with the one successful test that found the base. Zuofu 3, 2 15 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.

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

I am trying to figure out what is going on here. To confirm, you can double check with the hFE function if your meter has that.

To bias a transistor we have to supply current to base pin, this current I B should be limited to 5mA. Applications Can be used to switch high current upto mA loads It dafasheet also be used in the various switching applications.

The value for this resistor can be calculated using the formula. Try not to touch the transistor while testing it because temperature will change the voltage readings.

2NA Pinout, Features, Equivalent & Datasheet

Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site the association bonus does not count. Would you like to answer one of these unanswered questions instead? No other pin will show that. Would I reuse it?


It can be even worse, since the On Semi PN has the conventional pinout, despite being the same manufacturer and mostly same specifications: I have a simple circuit to send current to a brushless fan running at 12V on the high side, using a NPN transistor 2NA: When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region and the Base Emitter voltage could be around mV.

As the name suggests this resistor will limit the current flowing through the transistor to prevent it from damaging. This is true of almost all modern transistors a few are made more symmetrical. In actual circuit modifications might be required.

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.