2N3420-Transistor Overview
The 2N3420 is a high-performance NPN silicon transistor designed for medium power amplification and switching applications. With a maximum collector current of 0.8 A and a collector-emitter voltage rating of 100 V, this device is well-suited for use in audio amplifiers, driver stages, and general-purpose switching circuits. Its robust construction ensures reliable operation under various electrical stresses, making it a dependable choice for industrial and commercial electronic designs. For sourcing and detailed technical data, visit IC Manufacturer.
2N3420-Transistor Technical Specifications
| Parameter | Value | Unit | Description |
|---|---|---|---|
| Collector-Emitter Voltage (VCEO) | 100 | V | Maximum voltage between collector and emitter |
| Collector-Base Voltage (VCBO) | 100 | V | Maximum voltage between collector and base |
| Emitter-Base Voltage (VEBO) | 5 | V | Maximum voltage between emitter and base |
| Collector Current (IC) | 0.8 | A | Maximum continuous collector current |
| Power Dissipation (Ptot) | 20 | W | Maximum power dissipation at 25??C |
| DC Current Gain (hFE) | 40 to 160 | ?? | Typical DC current gain range |
| Transition Frequency (fT) | 3 | MHz | Frequency at which current gain drops to unity |
| Junction Temperature (Tj) | 200 | ??C | Maximum junction operating temperature |
2N3420-Transistor Key Features
- High voltage tolerance: With a collector-emitter voltage rating of 100 V, this transistor supports medium power applications requiring robust voltage handling.
- Moderate power dissipation: Allows operation with up to 20 W power dissipation, ensuring reliability in amplifier and switching roles.
- Wide DC gain range: The current gain between 40 and 160 enables flexible circuit design, accommodating varying amplification requirements.
- Thermal stability: Rated for junction temperatures up to 200??C, it maintains consistent performance in demanding thermal environments.
Typical Applications
- Audio power amplifiers: Ideal for driver stages and output sections where medium current and voltage are required to ensure clear and undistorted sound amplification.
- Switching circuits: Suitable for general-purpose switching tasks in industrial control systems and relay drivers due to its robust switching capability.
- Voltage regulators and power supplies: Used for stabilization and control in linear power supply circuits, benefiting from its high voltage and current handling.
- Signal amplification: Effective in intermediate frequency stages and low-frequency amplifiers requiring reliable gain performance.
2N3420-Transistor Advantages vs Typical Alternatives
This transistor offers a balanced combination of voltage tolerance, power dissipation, and gain that often surpasses typical small-signal transistors. Its ability to operate at higher collector currents and voltages provides enhanced reliability and flexibility in medium power designs. The wide current gain range and high junction temperature rating make it a durable, efficient alternative for industrial amplification and switching, delivering consistent performance where other devices might fall short.
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2N3420-Transistor Brand Info
The 2N3420 transistor is a widely recognized NPN silicon transistor originally produced by multiple manufacturers under JEDEC standard numbering. It is commonly available from key semiconductor suppliers and is
