Overview
The 2N2222A, produced by Microchip Technology, is a widely used NPN bipolar junction transistor (BJT) known for its versatility and reliability. This transistor is highly regarded for its high current capability and low saturation voltage, making it suitable for various electronic applications including amplification, switching, and signal processing.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Current Gain (hFE) | 100 to 800 | - |
| Continuous Collector Current (IC) | 800 | mA |
| Emitter Base Voltage (VBE) | 6 | V |
| Collector Emitter Voltage (VCE) | 30 | V |
| Base Current (IB) | 5 | mA (maximum) |
| Power Dissipation | 652 | mW |
| Package Type | TO-92, TO-18-3 Metal Can | - |
Key Features
- Bi-Polar high current NPN Transistor
- High current capability up to 800mA
- Low saturation voltage
- Available in TO-92 and TO-18-3 Metal Can packages
- High DC current gain (hFE) ranging from 100 to 800
- Maximum base current of 5mA
Applications
- Switching high current loads up to 800mA
- Various switching applications
- Speed control of motors
- Inverter and rectifier circuits
- Darlington Pair configurations
Q & A
- What is the 2N2222A transistor?
The 2N2222A is an NPN bipolar junction transistor produced by Microchip Technology, known for its high current capability and low saturation voltage.
- What are the key specifications of the 2N2222A transistor?
Key specifications include a DC current gain of 100 to 800, continuous collector current of 800mA, emitter base voltage of 6V, and collector emitter voltage of 30V.
- In what package types is the 2N2222A available?
The 2N2222A is available in TO-92 and TO-18-3 Metal Can packages.
- What are the typical applications of the 2N2222A transistor?
Typical applications include switching high current loads, speed control of motors, inverter and rectifier circuits, and Darlington Pair configurations.
- How do I use the 2N2222A transistor as a switch?
To use the 2N2222A as a switch, apply a base voltage to induce a base current, ensuring the use of a current limiting resistor to prevent damage.
- What is the maximum collector current the 2N2222A can handle?
The maximum collector current the 2N2222A can handle is 800mA.
- What is the power dissipation of the 2N2222A transistor?
The power dissipation of the 2N2222A transistor is 652mW.
- Can the 2N2222A be used in amplification circuits?
Yes, the 2N2222A can be used in amplification circuits due to its high current gain and low saturation voltage.
- What are some equivalent transistors to the 2N2222A?
Some equivalent transistors include BC549, BC636, BC639, BC547, 2N2369, and others as listed in the datasheet.
- How do I calculate the base resistor value for the 2N2222A transistor?
The base resistor value can be calculated using the formula RB = VBE / IB.
