DATASHEET 2222A PDF

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. Datasheet contains the design specifications for product development. Datasheet contains preliminary data; supplementary data will be.

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The hFE is usually much higher when properly connected than when collector and emitter are swapped. 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. To confirm, you can double check with the hFE function if your meter has that. The general specifications of the various variants are similar, with the biggest difference being the maximum allowable current and power dissipation.

I have a simple circuit to send current to a brushless fan running at 12V on the high side, using a NPN transistor 2NA: Am I missing something here? 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 By using our site, you acknowledge dstasheet you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

In other projects Wikimedia Commons. Spehro Pefhany k 4 TL — Programmable Reference Voltage. But there are two important features datashfet distinguish both. The JEDEC registration of a device number ensures particular rated values will be met by all parts offered under that number. This transistor like all can be used ratasheet as a switch or as an amplifier.

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Datashet Can be used to switch high current upto mA loads It can also be used in the various switching applications. What do you think? They’re listed together because they’re complementary transistors.

Retrieved from ” https: Thank you for your interest in this question. It can be even worse, since the On Semi PN has the conventional pinout, despite being the same manufacturer and mostly same specifications: All variations have a beta or current gain h fe of at least in optimal conditions.

When I 2222aa 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. 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 is the picture of the datasheet for the pins: I have a simple circuit to send current to a brushless fan running at 12V on the high side, using a NPN datasehet 2NA:. Complete Technical Details can be found at the 2NA datasheet given at the end of this page.

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If I set up the circuit for a quick test, it seems that the datasheet or the transistor has the pins swapped. To make things simple I have shown a simplified circuit datwsheet make a transistor as switch. Junkbots, bugbots, and dagasheet on wheels: The base will show a diode connection to both other pins, in only one polarity. No other pin will show that. Billions of units have been manufactured over the past 45 years and there is continuing high volume annual production.

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Would you like to answer one of these unanswered questions instead? Absolute maximum rating for emitter-base voltage is 6V hence the E-B junction broke down and started conducting.

To distinguish collector from emitter, you look at the voltage shown in the diode function with the one successful test that found the base. The situation worsen when all these china fake transistors crowded the whole market, there are no standardization at all.

I have used a base voltage of 5V and a dataasheet of 1K as current limiting resistor. Graf and William Sheets Hence the datashest pin-out is sadly not standardized. However one important thing to notice is the Base resistor a. It looks like a “diode”.

It is frequently used as a small-signal transistor, [4] [5] and it remains a small general purpose transistor [6] of enduring popularity. Try not to touch the transistor while testing it because temperature will change the voltage readings.

This is true of almost all modern transistors a few are made more symmetrical. This page was last edited on 25 Octoberat In actual circuit modifications might be required. Learn to keep an eye open for the following transistors, as they’re among the most useful, inexpensive, and popular types: When this transistor is fully biased then it can allow a maximum of mA to flow across the collector ddatasheet emitter.

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