2N5665-Transistor Overview
The 2N5665 is a high-performance silicon NPN bipolar junction transistor (BJT) designed for medium power amplification and switching applications. It delivers robust current handling capacity with a collector current rating up to 4A and a collector-emitter voltage of 100V, making it suitable for industrial and power electronics circuits requiring reliable performance under demanding conditions. Its complementary transistor, the 2N5666, enables push-pull amplifier designs. With a gain bandwidth product of approximately 4 MHz, this device provides a balanced combination of power, frequency response, and durability. Available in a TO-39 metal can package, it ensures excellent thermal conductivity and mechanical stability. For detailed product sourcing and technical support, visit IC Manufacturer.
2N5665-Transistor Key Features
- High Collector Current Capacity: Supports up to 4A continuous collector current, enabling high power switching and amplification in industrial circuits.
- Voltage Handling: Collector-emitter voltage rating of 100V ensures reliability in medium voltage applications, enhancing design flexibility.
- Moderate Gain Bandwidth Product: Approximately 4 MHz gain bandwidth product allows effective amplification in audio and low-frequency signal processing.
- Complementary Pair Availability: Designed to work with the 2N5666 PNP transistor for push-pull configurations, facilitating efficient amplifier designs.
- TO-39 Metal Can Package: Provides superior thermal dissipation and mechanical protection, improving device longevity and reliability in harsh environments.
- Stable Gain Characteristics: Offers a typical DC current gain (hFE) range that supports stable operation across various biasing conditions.
- Robust Design for Industrial Use: Ensures high ruggedness and consistent performance in switching, amplifier, and driver circuits.
2N5665-Transistor Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector-Emitter Voltage (VCEO) | 100 | V |
| Collector-Base Voltage (VCBO) | 120 | V |
| Emitter-Base Voltage (VEBO) | 5 | V |
| Collector Current (IC) | 4 | A |
| Power Dissipation (PC) | 30 | W |
| DC Current Gain (hFE) | 40 to 160 | (typical range) |
| Gain Bandwidth Product (fT) | 4 | MHz |
| Package Type | TO-39 | – |
| Transition Frequency | 4 | MHz |
| Operating Junction Temperature | 200 | ??C |
2N5665-Transistor Advantages vs Typical Alternatives
This device offers a distinctive balance of high current capacity and voltage rating uncommon in many standard transistors, making it ideal for medium power industrial applications. Its metal can TO-39 package ensures superior thermal management compared to plastic-encapsulated types, enhancing reliability. The availability of a complementary PNP transistor simplifies push-pull amplifier design, providing improved linearity and efficiency. These attributes combined deliver enhanced robustness, stable gain, and greater adaptability in power switching and amplification tasks compared to typical low-power or plastic-packaged alternatives.
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Typical Applications
- Medium power audio amplifiers, where the transistor??s moderate gain bandwidth and high current handling enable efficient signal amplification without excessive distortion.
- Power switching circuits requiring reliable operation at voltages up to 100V and currents up to 4A, such as relay drivers or motor control stages.
- Complementary push-pull amplifier stages, utilizing the matched PNP transistor (2N5666) for balanced and efficient output drive.
- Industrial control circuits demanding durable and thermally stable transistor components for harsh operating environments.
2N5665-Transistor Brand Info
The 2N5665 transistor is a classic silicon NPN device widely recognized for its robustness and versatility in power amplification and switching roles. Manufactured under stringent quality standards, it remains a trusted component for engineers requiring consistent performance in industrial and commercial electronics. Its metal can TO-39 packaging reflects a design focus on thermal efficiency and mechanical durability. This transistor is often chosen for its proven reliability and compatibility with complementary devices, supporting a broad range of applications across multiple sectors.
FAQ
What is the maximum collector current rating for this transistor?
The maximum continuous collector current is rated at 4 amperes, allowing the transistor to handle medium power loads typically found in industrial amplifiers and switching circuits.
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Can this transistor be used in high-frequency applications?
With a gain bandwidth product of approximately 4 MHz, it is suitable for low to moderate frequency amplification tasks such as audio applications, but not designed for high-frequency RF use.
What packaging does this transistor come in and why is it important?
This transistor is housed in a TO-39 metal can package, which offers enhanced thermal dissipation and mechanical stability compared to plastic packages, making it suitable for demanding industrial environments.
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Is there a complementary transistor available for push-pull amplifier designs?
Yes, the 2N5666 is the complementary PNP transistor designed to pair with this NPN device, enabling efficient push-pull amplifier configurations and improving overall circuit linearity.
What are typical applications for this transistor in industrial electronics?
Typical uses include medium power audio amplifiers, power switching circuits, relay drivers, motor controllers, and industrial control systems requiring reliable and thermally robust transistor components.






