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2N2222 Transistor Data
Key transistor data for the 2N2222 switching transistor including key electrical parameters, pinout, package type and many other key transistor details.
Key details and performance parameters for the 2N2222 transistor.
| Transistor parameters & data |
|
|---|---|
| Parameters | Details |
| Transistor type | NPN silicon switching transistor |
| Package type | TO18 |
| VCBO max (V) | 60 |
| VCEO max (V) | 30 |
| VEBOmax (V) | 5 |
| VCEsat (V) | 400mV @ I |
| IC max (mA) | 800 |
| TJ Max °C | 175 |
| PTOT nW | 500 |
| fT min (MHz) | 250 |
| COB | 8p |
| hfe | 100 min |
| IC for hfe | 150 mA |
| Similar / equivalents | BSW64, 2N2222 |
Outline:
Pinout:
Explanation of transistor parameters
| Parameter | Explanation |
|---|---|
| VCBO Max | Maximum collector-base voltage with emitter open circuit . |
| VCEO Max | Maximum collector-emitter voltage with base open circuit. |
| VEBO Max | Maximum emitter-base voltage with collector open circuit. |
| VCEsat (included where applicable) | The voltage drop across the collector-emitter when the transistor is fully saturated (acting as a closed switch). |
| IC Max | Maximum collector current. |
| Parameter | Explanation |
|---|---|
| TJ | Maximum junction temperature. |
| PTOT Max | Maximum device dissipation normally in free air at 25°C unless other conditions indicated. |
| fT Min | Minimum cutoff frequency at which the current gain in a common emitter circuit falls to unity. |
| COB Max | Maximum collector capacitane, normally measured with emitter open circuit. |
| hFE | DC current gain for HFE at IC. [Note hfe is the small signal gain and although this may be slightly different, the transistor current gain will vary considerably from ne transistor to the next of the same type.] |
| PTOT Max | Maximum device dissipation normally in free air at 25°C unless other conditions indicated. |
These are the main transistor parameters that have been included in our list. There are others, but these help quantify the main elements of the performance of the transistor.
Please note, that the data given is the best estimate we can give within a tabulated summary of this nature. Parameters also vary between manufacturers. Electronics Notes cannot accept any responsibility for errors, inaccuracies, etc, although we do endevaour to ensure the data is as accurate as possible.
Notes and supplementary information
The 2N2222 and 2N2222A are switching transistors which are ideal for many applications and they work well, even for some RF applications, although it's best to use a proper RF transistor for this.
• Availability & sources
The device is available from a number of stockists and electronic component distributors.
• Notation
The 2N2222 and 2N2222A are normally expected to have a small metal TO18 can. A version of the 2222 transistor is available in a plastic encapsulation and this is normally designated the PN2222, but some devices in a plastic encapsulation have been seen bearing the 2N2222 designation.
Written by Ian Poole .
Experienced electronics engineer and author.
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