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PN2222 Transistor Data
Key transistor data for the PN2222A NPN plastic case switching transistor including key electrical parameters, pinout, package type and many other key datasheet transistor details.
Key details and performance parameters for the PN2222 transistor.
| Transistor Datasheet Parameters & Data |
|
|---|---|
| Parameters | Datasheet Details |
| Transistor type | NPN silicon switching transistor |
| Package type | TO92 |
| VCBO max (V) | 60 |
| VCEO max (V) | 30 |
| VEBOmax (V) | 5 |
| VCEsat (V) | 1V @ I |
| IC max (mA) | 600 |
| TJ Max °C | 505 |
| PTOT nW | 625 |
| fT min (MHz) | 300 |
| COB | 8p |
| hfe | 100 - 300 |
| 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
• Availability & sources
The device is available from a number of stockists and electronic component distributors.
• Additional details
The PN2222 is a plastic encapsulated version of the iconic 2N2222 transistor which has been available for many years. Sometimes the plastic versions may even be labelled as 2N2222 devices.
The transistor is often included in some of the breadboard kits available and as a result, it is still widely used.
The PN2222 is a switching transistor which is ideal for many applications and works well, even for some RF applications, although it's best to use a proper RF transistor for this.
Written by Ian Poole .
Experienced electronics engineer and author.
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