2N2222 is an NPN bipolar junction transistor commonly used for low power amplification and switching. It has three terminals namely emitter, base, and collector. It is designed for low to medium current, low power, medium voltage, and can operate at moderately high speeds.
It was originally made in the TO-18 metal package. It is very much similar to BC547 but 2N2222 can drive larger loads as the maximum collector current is up to 800mA with low power dissipation.
2N2222 NPN Transistor Pinout
| PIN NUMBER | PIN NAME |
|---|---|
| 1 | Emitter |
| 2 | Base |
| 3 | Collector |
Features and specifications:
- Transistor type: Bi-Polar NPN Transistor
- DC Current Gain (hFE): 300 max
- Collector current (IC): 800mA
- Collector Base Voltage (VCB): 60 V
- Collector-Emitter voltage (VCE): 30V
- Emitter Base Voltage (VEB): 5V
- Maximum Power dissipation: 500mW
- Junction temperature: 200⁰C
- Current gain-bandwidth product: 300MHz
- Noise figure: 4 dB
- Available in TO-18 metal Package
Applications and uses:
- It is used for current amplification
- It is also used as a switch to turn ON or OFF any appliances automatically
- Because of its fast response time, it can be used for pulse width modulation
- Can be used to switch high current (up to 800mA) loads
- Speed control of Motors
- Inverter and other rectifier circuits
- It can be used in Darlington Pair.
