2N3499L-Transistor Overview
The 2N3499L is a robust NPN bipolar junction transistor designed for medium power amplification and switching applications. It delivers reliable performance with a collector-emitter voltage rating suitable for a broad range of industrial electronics. Its construction supports efficient current handling and stable gain, making it ideal for use in audio amplifiers, power regulators, and signal processing circuits. Engineers and sourcing specialists value this component for its consistent electrical characteristics and ease of integration into diverse circuit designs. For detailed technical support and procurement, visit the IC Manufacturer portal.
2N3499L-Transistor Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector-Emitter Voltage (VCEO) | 80 | V |
| Collector-Base Voltage (VCBO) | 100 | V |
| Emitter-Base Voltage (VEBO) | 6 | V |
| Collector Current (IC) | 4 | A |
| Power Dissipation (Ptot) | 30 | W |
| DC Current Gain (hFE) | 40 to 160 | ?C |
| Transition Frequency (fT) | 10 | MHz |
| Junction Temperature (Tj) | +150 | ??C |
2N3499L-Transistor Key Features
- High voltage tolerance: With a collector-emitter voltage rating of 80V, it supports medium power circuits requiring robust voltage endurance.
- Strong current handling capability: The transistor can handle collector currents up to 4A, enabling effective power amplification and switching in demanding industrial applications.
- Wide DC current gain range: Gain ranging from 40 to 160 ensures flexible amplification levels suitable for both linear and switching modes.
- Thermal stability: Operates reliably up to 150??C junction temperature, enhancing device longevity under thermal stress.
- Moderate transition frequency: Supports signal frequencies up to 10 MHz, adequate for many audio and control applications.
- Package type: Packaged in a TO-220 case, facilitating straightforward mounting and heat dissipation in power electronics designs.
Typical Applications
- Power amplifiers in audio equipment, where medium power handling and stable gain are essential for clear, distortion-free sound reproduction.
- Switching regulators and power supply circuits requiring reliable high current switching and voltage tolerance.
- Industrial motor control circuits that benefit from robust current capacity and thermal reliability.
- Signal amplification in instrumentation and control systems, leveraging its moderate frequency response and gain characteristics.
2N3499L-Transistor Advantages vs Typical Alternatives
This transistor offers a combination of high voltage and current ratings with a reliable gain range, which often surpasses typical small-signal transistors in power handling and durability. Its ability to operate at elevated junction temperatures provides enhanced reliability in harsh industrial environments. Compared to alternatives with lower power ratings or frequency limits, it enables more efficient and stable circuit designs, reducing the need for additional components and improving overall system integration.
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2N3499L-Transistor Brand Info
The 2N3499L is a classic transistor model produced by multiple semiconductor manufacturers globally. Originally popularized by leading brands specializing in discrete bipolar transistors, this device is commonly found under established industrial component lines. It is widely recognized for its TO-220 packaging and proven performance in power amplification and switching roles. Engineers sourcing this device can expect consistent quality and broad availability from reputable suppliers, supported by detailed datasheets and application notes for seamless integration.





