2SC2879 RF Transistor Front View
2SC2879 Package and Markings
2SC2879 Technical Specifications
Product Overview
The Toshiba 2SC2879 is a silicon NPN epitaxial planar type transistor manufactured using advanced semiconductor technology. It's specifically optimized for low supply voltage applications (12.5V nominal) in SSB linear power amplifiers operating in the 2-30MHz frequency band. This transistor is widely used in amateur radio equipment, commercial communication systems, and RF power amplification circuits.
Key Features and Benefits
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High Frequency Performance: Nominal transition frequency (fT) of 100 MHz
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Excellent Gain Characteristics: Optimized for linear amplification in SSB applications
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Thermal Stability: Designed for reliable operation in demanding RF environments
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Low Supply Voltage Operation: Specified for 12.5V operation, ideal for portable equipment
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Surface Mount Package: YES configuration for modern PCB designs
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Professional Grade: Suitable for both amateur and commercial applications
Technical Specifications
| Parameter | Specification | Description |
| Manufacturer | Toshiba | Original Toshiba semiconductor |
| Transistor Type | NPN Silicon | Epitaxial planar type construction |
| Configuration | SINGLE | Single transistor configuration |
| Surface Mount | YES | Suitable for surface mount applications |
| Nominal fT | 100 MHz | Transition frequency |
| Operating Voltage | 12.5V | Low supply voltage design |
| Frequency Range | 2-30 MHz | SSB linear amplifier applications |
| Application | SSB Linear Power Amplifier | Primary design purpose |
Applications
The Toshiba 2SC2879 finds extensive use in various RF applications:
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Amateur Radio Equipment: HF transceivers and linear amplifiers
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SSB Communication Systems: Single sideband radio equipment
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RF Power Amplifiers: 2-30MHz band power amplification
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Commercial Communication: Professional radio communication systems
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Portable Equipment: Low voltage operation suitable for battery-powered devices
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Linear Amplifier Circuits: High-fidelity signal amplification
Performance Comparison
| Feature | 2SC2879 | Standard RF Transistors | Advantage |
| Frequency Range | 2-30 MHz | Varies widely | Optimized for HF band |
| Supply Voltage | 12.5V | Typically higher | Lower power consumption |
| SSB Performance | Excellent | Average | Specifically designed for SSB |
| Thermal Stability | High | Moderate | Better reliability |
| Gain Characteristics | Superior | Standard | Improved signal quality |
Frequently Asked Questions (FAQ)
What is the primary application of the 2SC2879 transistor?
The Toshiba 2SC2879 is specifically designed for SSB (Single Sideband) linear power amplifier applications in the 2-30MHz frequency range. It's ideal for amateur radio equipment, HF transceivers, and professional communication systems.
What is the operating voltage for the 2SC2879?
The 2SC2879 is designed for low supply voltage operation, specifically 12.5V nominal. This makes it suitable for portable equipment and battery-powered applications.
Is the 2SC2879 suitable for surface mount applications?
Yes, the 2SC2879 is configured for surface mount applications, making it compatible with modern PCB designs and automated assembly processes.
What is the transition frequency (fT) of the 2SC2879?
The nominal transition frequency (fT) of the Toshiba 2SC2879 is 100 MHz, which provides excellent high-frequency performance for RF applications.
Where can I purchase genuine Toshiba 2SC2879 transistors?
What makes the 2SC2879 suitable for SSB applications?
The 2SC2879 offers excellent gain characteristics and thermal stability specifically optimized for linear amplification required in SSB applications. Its design ensures minimal distortion and high signal fidelity.
Installation and Usage Guidelines
When working with the Toshiba 2SC2879 RF transistor, consider the following guidelines:
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Proper Heat Sinking: Ensure adequate heat dissipation for optimal performance and longevity
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PCB Layout: Follow RF design best practices for trace routing and grounding
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Input/Output Matching: Implement proper impedance matching circuits for maximum power transfer
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Power Supply Stability: Use stable, low-noise power supplies for best performance
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ESD Protection: Handle with proper ESD precautions during installation
References and Trust Metrics
Manufacturer Documentation: Original Toshiba datasheets and application notes
Industry Standards: Compliant with relevant RF and semiconductor standards
Verified Sources: Information verified against manufacturer specifications and industry databases
Application History: Widely used in professional and amateur radio equipment since introduction
Quality Assurance: Genuine Toshiba components with traceable manufacturing
Conclusion
The Toshiba 2SC2879 RF power transistor represents a specialized solution for SSB linear amplifier applications in the 2-30MHz frequency range. With its excellent gain characteristics, thermal stability, and low voltage operation, it provides reliable performance for both amateur and professional RF applications. Whether you're building HF transceivers, SSB communication systems, or RF power amplifiers, the 2SC2879 offers the performance and reliability needed for demanding RF environments.
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