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Introduction
The 2N3055 is a popular NPN silicon power transistor widely used in various electronic circuits for switching and amplification purposes. Its robust design and high power-handling capabilities make it a staple component in power supply circuits, audio amplifiers, motor controllers, and other high-current applications.
Pinout of 2N3055
Key Features
- Type: NPN Bipolar Junction Transistor (BJT)
- Power Dissipation: Can handle high power, up to 115W.
- Voltage Ratings:
- Collector-Emitter Voltage (Vce): 60V (maximum)
- Collector-Base Voltage (Vcb): 100V (maximum)
- Current Ratings:
- Collector Current (Ic): 15A (maximum)
- Gain: Low to moderate current gain (hFE), typically in the range of 20–70.
- Package: TO-3 metal can, providing excellent heat dissipation.
Applications
- Linear Voltage Regulators: Commonly used in regulated power supplies.
- Audio Amplifiers: Handles the high current requirements in class AB or class A amplifiers.
- Motor Drivers: Suitable for driving DC motors due to its high current-handling capability.
- Inverters: Used in DC-to-AC power conversion circuits.
- General Purpose Switching: Serves as a switch in various high-power electronic devices.
Advantages
- High power-handling capability.
- Durable metal package for better heat dissipation.
- Wide availability and low cost.
Limitations
- Limited high-frequency performance compared to modern transistors.
- Requires adequate heat sinking due to high power dissipation.