DISCRETE SEMICONDUCTORS DATA SHEET M3D 2N; 2NA NPN switching transistors Product speciﬁcation Supersedes data. 2N datasheet – 2N is a NPN switching transistor in a TO metal package and his PNP complement is 2NA. 2N datasheet applications: . DESCRIPTION. The 2NA and 2NA are silicon Planar. Epitaxial NPN transistors in Jedec TO (for. 2NA) and in Jedec TO (for 2NA).
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It is used in a variety of analog amplification and switching applications.
2N2222 Datasheet, Equivalent, Cross Reference Search
Spehro Pefhany k 4 The JEDEC registration of a device number ensures 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. Use dmy dates from July Commons category link is on Wikidata. When I apply a voltage between the pin 1 to 3, as soon as the voltage rises over about 8V, the current starts to flow, even when the base has no voltage pulled down or floatingand the transistors gets pretty hot.
Junkbots, bugbots, datasheett bots on wheels: Archived from the original on 2n2222a April As the name suggests this resistor will limit the current flowing through the transistor to 22n222a it from damaging.
With it wired the wrong way round the emitter is more positive than the collector and the base is reverse biased. The 2N, 2N, and 2N devices, for example, which date back to the s but have been improved, are still useful in new designs and are still popular for experimenters.
The general specifications of the various variants are similar, with the datazheet difference being the maximum allowable current and power dissipation. Views Read Edit View history.
All variations have a beta or current gain h fe of at least in optimal conditions. 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. I don’t think so – throw it in the bin. 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.
Am I missing something here? To make things simple I have shown a simplified circuit to make a transistor as switch. I have used a base voltage of 5V and a value of 1K as current limiting resistor. Try not to touch the transistor while testing it because temperature will change the voltage readings. To distinguish collector from emitter, you look at the voltage shown in the diode function with the one successful test that found the base.
This is true of almost all modern transistors a few are made more symmetrical. It looks like a “diode”. It is designed for low to medium currentlow powermedium voltageand can operate at moderately high speeds.
In actual circuit modifications might be required. Most 2Ns have the orientation which your diagram shows, where if the eatasheet side is facing you, the pins are E-B-C respectively.
TL — Programmable Reference Voltage. Single transistors are also available in several different surface mount packages, and a number of manufacturers market surface mount packages that incorporate several 2Ntype transistors in one package as an array of transistors.
They’re listed together because they’re complementary transistors.
It is frequently used as a small-signal transistor,   and it remains a small general purpose transistor  of enduring popularity. The value for dataseet resistor can be calculated using the formula.
2NA Pinout, Features, Equivalent & Datasheet
This transistor will make it forward biased and thus closes the connection between datasheef and emitter. No datasheer pin will show that. 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.
Submitted by webmaster on 11 December The slightly lower of the two voltages will correspond to the collector-base junctionand the dataxheet will be the emitter-base junction. Retrieved from ” https: Learn to keep an eye open for the following transistors, as they’re among the most useful, inexpensive, and dattasheet types: 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.
This transistor like all can be used either as a switch or as an amplifier. It can be even worse, since the On Semi PN has the conventional pinout, despite being the same manufacturer and mostly same specifications: To confirm, you can double check with the hFE function if your meter has that.