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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I have a simple circuit to send current to a brushless fan running at 12V on the high side, using a NPN transistor 2NA: This is the pic of the transistor, as I understand that 2n22a2 should work, but it doesn’t it is always ‘on’ with 12V between the collector and the emitter with the base floating.

However one important thing to notice is the Base resistor a. 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.

This page was last edited on 25 Octoberat 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the On Semi PN has the conventional pinout, despite being the same manufacturer and mostly same specifications: It was originally made in the TO metal can as shown in the picture. The general specifications of the various variants are similar, with the biggest difference being the maximum allowable current and power dissipation. From Wikipedia, the free encyclopedia. Am I missing something here?

The situation worsen when all these china fake transistors crowded the whole market, there are no standardization at all. The exact specifications depend on the manufacturer, case type, and variation. 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. What do you think?


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.

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

With it wired the wrong way round the emitter is more positive than the collector and the base is reverse biased. Archived from the original on 14 April Would you like to answer one of these unanswered questions instead?

If I set up the circuit for a quick test, it seems that the datasheet or the transistor has the pins swapped. The value for this resistor can be calculated using the formula. The base will show a diode connection to both other pins, in only one polarity.

2NA Pinout, Features, Equivalent & Datasheet

To distinguish collector from emitter, you look at the voltage shown in the diode function with the one successful test that found the base. Complete Technical Details can be found at the 2NA datasheet given at the end of this page.

The 2N exhibits its forward gain beta peak at a lower current than the 2N, and is useful in amplifier applications with reduced I ce. To bias a transistor we have to supply current to base pin, this current I B should be limited to 5mA.


Submitted by webmaster 2n222z 11 December The JEDEC registration of a device number ensures particular rated values will be met by all parts offered under datasheft number.

Graf and William Sheets But there are two important features that distinguish both. Use dmy dates from July Commons category link is on Wikidata.

Note that the motor here draws about mA from the 12V power source, since the 2N has collector current rating upto mA dtaasheet circuit is possible had it been a BC the transistor should have been burnt. JEDEC registered parameters include outline dimensions, small-signal current gaintransition frequencymaximum values for voltage withstand, current rating, power dissipation and temperature rating, and others, measured under standard test conditions.

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2N2222 Datasheet, Equivalent, Cross Reference Search

Learn to keep an eye open for the following transistors, as they’re among the most useful, inexpensive, and popular 2n2222a This transistor like all can be used either as a switch or as an amplifier. Hence the 2N pin-out is sadly not standardized. It is frequently used as a small-signal transistor, [4] [5] and it remains a small general purpose transistor [6] of enduring popularity.

You have to try each of the three pins to the two others, with both polarities 6 pairs of tests. To make things simple I have shown a simplified circuit to make a transistor as switch. Commercial transistors Bipolar transistors.