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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When this transistor is fully biased then it can allow a maximum of mA to flow across the collector and emitter. Submitted by webmaster on 11 December Zuofu 3, 2 15 I don’t think so – throw it in the bin.

datashert You can have up to 3 types of configurations. TL — Programmable Reference Voltage. This is true of almost all modern transistors a few are made more symmetrical.

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. Thank you for your interest in this question. However one important thing to notice is the Base resistor a. I have a simple circuit to send current to a brushless fan running at 12V on the high side, using a NPN transistor 2NA: No other pin will show that.

The hFE is usually much higher when properly connected than datasheett collector and emitter are swapped.

The value for this resistor can be calculated using the formula. This transistor like all can be used either as a switch or as an amplifier.

Satasheet bias a transistor we have to supply current to base pin, this current I B should be limited to 5mA. If I set up the circuit for a quick test, it seems that the datasheet or the transistor has the datasheet swapped.


It looks like a “diode”. The base will show a diode connection to both other pins, in only one polarity. Would I reuse it?

With it wired the wrong way round the emitter is more positive than the collector and the base is reverse biased.

This datasgeet 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. What do you think?

ST Microelectronics – datasheet pdf

Applications Can be used to switch high current upto mA loads It can also be used in the various dataeheet applications. Complete Technical Details can be found at the 2NA datasheet given at the end of this page. Absolute maximum rating for emitter-base voltage is 6V hence the E-B junction broke down and started conducting. I have used a base voltage of 5V and a value of 1K datawheet current limiting resistor.

To confirm, you can double check with the hFE function if your meter has that. 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 datsaheet 2N pin-out is sadly not standardized. Home Questions Tags Users Unanswered. The situation worsen when all these china fake transistors crowded the whole market, there are no standardization at all.

This transistor will make it forward biased and datashset closes the connection between collector and emitter. I am trying to figure out what is going on here. I have a simple circuit to send current to a brushless fan running at 12V on the high side, using a NPN transistor 2NA:.

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To make things simple I have shown a simplified circuit to make a transistor as switch. Javier Loureiro 1 7 You have to try each of the three pins to the two others, with both polarities 6 pairs of tests. How to use 2NA This transistor like all can be used either as a switch or as an amplifier. To distinguish collector from emitter, you look at the voltage shown in the diode function with the one successful test that found the base.


ST Microelectronics

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. As the name suggests this resistor will limit the current flowing through the transistor to prevent it from damaging.

It can be even worse, since the On Semi PN has the conventional pinout, despite being the same manufacturer and mostly same specifications: Would you like to answer one of these unanswered questions instead?

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Dagasheetand our Terms of Service. When I apply a voltage between the pin 1 to 3, as soon as the voltage rises over about 8V, the current starts datashfet flow, even when the base has no voltage pulled down or floatingand the transistors gets pretty hot.

Am I missing something here? This is the picture of the datasheet for the pins: Try not to 22222a the transistor while testing it because temperature will change the voltage readings. 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.

The slightly lower of the two voltages will correspond to the collector-base junctionand the datwsheet will be the emitter-base junction.