Description
2N5551 General-purpose NPN Transistor
The 2N5551 is a reliable, high-voltage NPN bipolar junction transistor (BJT) widely used in general electronics, hobby projects, DIY circuits, and professional applications.
It is designed for low-current and high-voltage switching, amplification, and signal processing making it a versatile component for students, technicians, and engineers.
This transistor is known for its stable performance, excellent gain, and fast switching response, making it ideal for building and repairing LED TVs, audio amplifiers, power supplies, and more.
⚡ Key Features
- 🔋 High Voltage Handling – Supports up to 160V, suitable for signal amplification and high-voltage circuits.
- ⚙️ General-Purpose Use – Perfect for low-current switching and small-signal amplification.
- 🌀 Fast Switching Speed – Ensures smooth performance in driver circuits and timing circuits.
- 🔥 Low Noise Operation – Ideal for audio and RF-based applications.
- 📦 Compact TO-92 Package – Easy to use, solder-friendly, and breadboard compatible.
- 💯 Reliable and Durable – Ensures long-term stability in various electronics projects.
📊 Technical Specifications
| Parameter | Value |
|---|---|
| Transistor Type | NPN BJT |
| Collector-Emitter Voltage (Vceo) | 160V |
| Collector-Base Voltage (Vcbo) | 180V |
| Emitter-Base Voltage (Vebo) | 6V |
| Collector Current (Ic) | 600mA |
| Power Dissipation (Ptot) | 625mW |
| DC Current Gain (hFE) | 80–160 |
| Transition Frequency (ft) | 100 MHz |
| Package Type | TO-92 |
| Mounting Type | Through-Hole |
🛠️ Applications
The 2N5551 NPN transistor is commonly used in:
- 📺 LED TV motherboard and power supply repair
- 🔊 Audio amplifier pre-stage circuits
- 🔄 High-voltage, low-current switching circuits
- 🕹️ DIY electronics and hobby projects
- 📡 RF signal amplification
- 🔌 Voltage regulation and driver circuits
- ⚡ Inverter and SMPS feedback sections
- 🔍 Sensor interfacing and small-signal processing
🏆 Why Choose This Product?
- ✔ 100% tested component
- ✔ Best quality for repair shops & technicians
- ✔ Ideal for students and DIY learners
- ✔ Affordable and long-lasting
- ✔ Works perfectly in a wide range of electronics circuits
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