2N4029-Transistor Overview
The 2N4029 is a robust NPN bipolar junction transistor designed for medium-power switching and amplification applications. Featuring a maximum collector current of 5A and a collector-emitter voltage rating of 100V, this transistor offers reliable operation in demanding industrial environments. It delivers consistent gain and switching speed, making it well suited for power management, motor control, and audio amplification circuits. Its TO-3 metal can package provides excellent thermal dissipation, enhancing reliability under continuous load conditions. Engineers and sourcing specialists seeking a dependable device for medium-power applications will find this transistor a practical choice. For more detailed component sourcing, visit IC Manufacturer.
2N4029-Transistor Key Features
- High collector current capacity (5A) enables handling of significant load currents, ensuring effective power switching and amplification.
- Collector-emitter voltage rating up to 100V supports use in circuits requiring moderately high voltage tolerance, improving design flexibility.
- TO-3 metal can package offers superior heat dissipation, enhancing thermal stability and device longevity under continuous operation.
- Moderate gain (hFE) ensures predictable amplification characteristics suitable for analog and switching applications.
2N4029-Transistor Technical Specifications
| Parameter | Value | Units |
|---|---|---|
| Collector-Emitter Voltage (VCEO) | 100 | V |
| Collector-Base Voltage (VCBO) | 120 | V |
| Emitter-Base Voltage (VEBO) | 5 | V |
| Collector Current (IC) | 5 | A |
| Power Dissipation (PC) | 75 | W |
| DC Current Gain (hFE) | 20 to 70 | (typical range) |
| Transition Frequency (fT) | 3 | MHz |
| Package Type | TO-3 | Metal Can |
2N4029-Transistor Advantages vs Typical Alternatives
Compared to typical medium-power transistors, this device stands out with its superior current handling and high voltage ratings, enabling more demanding applications without compromising reliability. Its TO-3 package improves thermal management, which reduces failure rates in industrial settings. The consistent gain range provides engineers with predictable amplification performance, making it a preferred choice over less robust alternatives for power switching and amplification tasks.
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Typical Applications
- Power amplification circuits in audio and industrial signal processing, benefiting from the transistor??s high current and voltage capability for clean, reliable signal output.
- Motor control systems requiring efficient switching of moderate power loads in automation and robotics.
- Voltage regulation and power supply circuits where stable medium-power transistor operation is essential for performance.
- General-purpose medium-power switching applications in industrial and instrumentation electronics where durability and thermal performance matter.
2N4029-Transistor Brand Info
The 2N4029 transistor is a classic semiconductor device widely recognized in the industry for reliable medium-power switching and amplification. This transistor has been produced by multiple manufacturers adhering to JEDEC standard specifications, ensuring cross-brand compatibility and consistent quality. Its enduring popularity is due to its robust electrical characteristics and proven performance in demanding applications, making it a trusted component in many electronic designs.
FAQ
What is the maximum collector current for this transistor?
The device supports a maximum collector current of 5 amperes, allowing it to handle moderate power levels in switching and amplification circuits without damage.
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What package type does this transistor use and why is it important?
This transistor is housed in a TO-3 metal can package, which offers superior heat dissipation compared to plastic packages. This improves thermal stability and overall reliability during continuous or high-power operation.
Can this transistor be used in high-frequency switching applications?
With a transition frequency around 3 MHz, it is suited for medium-frequency switching and amplification tasks but not ideal for very high-frequency RF applications.
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What voltage ratings are critical when designing circuits with this transistor?
The collector-emitter voltage rating of 100V and collector-base rating of 120V must be observed to prevent breakdown and ensure reliable operation in voltage-sensitive designs.
Is this transistor suitable for audio amplification applications?
Yes, its moderate gain and power handling capabilities make it appropriate for audio power amplification, particularly in industrial or robust equipment requiring reliable medium-power transistors.







