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Would I reuse it? 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.
So if you looking for an NPN transistor that could switch loads of higher current then 2NA might the right choice for your project.
2N A/ A — Transistors | Manufacturer | Continental Device India Ltd (CDIL)
Wikimedia Commons has media related to 2N The hFE is usually much higher when properly connected than when collector and emitter are swapped. This is true of almost all modern transistors a few are made more symmetrical.
Zuofu 3, 2 15 To bias a transistor we have to supply current to base pin, this current I B should be limited to 5mA. The JEDEC registration of a device number ensures particular rated values will be met by all parts offered under that number.
2NA Pinout, Features, Equivalent & Datasheet
It can be even worse, since the On Semi PN has the conventional pinout, despite being the same manufacturer and mostly same specifications: It was originally made in the TO metal can as shown in the picture.
Skip to main content. 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. Billions of units have been manufactured over the past 45 years and there is continuing high volume annual production.
It is used in a variety of analog amplification and switching transisttor.
This transistor will make it forward biased and thus closes the connection between collector and emitter. Spehro Pefhany k 4 Home Questions Tags Users Unanswered.
2N2222A –NPN Transistor
The general specifications of the various variants are similar, with the biggest difference being the maximum allowable current and power dissipation. I don’t think so – throw it in the bin. The transisyor is an NPN transistor that can only switch one-third the current of the 2N but has otherwise similar characteristics.
The BC is a low voltage, low current, general-purpose switching transistor in a TO package. Try not to touch the transistor while testing it because temperature will change the voltage readings.
This is the picture of the datasheet for transitor pins: To confirm, you can double check with the hFE function if your meter has that. 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. Top menu About Us Contact. To distinguish collector from emitter, you look at the voltage shown in the diode function with the one successful test that found the base.
I have used a base voltage of 5V and a value of 1K as current limiting resistor. The value for this resistor can be calculated using the formula. 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.
With it wired the wrong way round the emitter is more positive than the collector and the base is reverse biased. From Wikipedia, the free encyclopedia.
Absolute maximum rating for emitter-base voltage is 6V hence the E-B junction broke down and started conducting. 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. Would you like to answer one of these unanswered questions instead? They’re listed together because they’re complementary transistors. To make things 2222q I have shown a simplified circuit to make a transistor as switch.
Graf and William Sheets Note that the motor here draws about mA from the 12V power source, since the 2N transistpr collector current rating upto mA this circuit is possible had it been a BC the transistor should have been burnt. Learn to keep an eye open for the trxnsistor transistors, as they’re among the most useful, inexpensive, and popular types: As the name suggests this resistor will limit the current flowing through the transistor to prevent it from damaging.
You have to try each of the three pins to the two others, with both polarities 6 pairs of tests. In actual circuit modifications might be required.
You can have up to 3 types of configurations. When this transistor is fully biased then it can allow a maximum of mA to flow across the collector and emitter. The exact teansistor depend on the manufacturer, case type, and variation.