Overview
The 2N5551 is a general-purpose NPN bipolar junction transistor (BJT) renowned for its high voltage capability (160V) and moderate current handling (0.6A). It is a staple in electronics workbenches, offering reliable performance in both amplification and switching roles. Whether you're prototyping a sensor interface, building an audio preamp, or driving a relay, the 2N5551 is a dependable choice for a wide array of circuits.
Key Features
- High Voltage Rating: With a collector-emitter voltage (Vceo) of 160V, it can handle higher voltage applications than many general-purpose transistors.
- Moderate Current Capacity: Supports up to 0.6A continuous collector current, suitable for driving small loads.
- NPN Silicon Design: Provides good gain (hFE) and fast switching speeds.
- TO-92 Package: Compact, through-hole package ideal for breadboarding and PCB prototyping.
- Wide Operating Temperature Range: Suitable for various environmental conditions.
Technical Specifications
- Type: NPN
- Collector-Emitter Voltage (Vceo): 160V
- Collector Current (Ic): 0.6A
- DC Current Gain (hFE): 80-250 (typical)
- Transition Frequency (ft): 100 MHz (typical)
- Power Dissipation (Pd): 625 mW (TO-92 package)
- Package: TO-92
- RoHS Compliant: Yes
Applications & Use Cases
- Signal Amplification: Ideal for small-signal audio preamps and sensor signal conditioning.
- Switching Applications: Use in relay drivers, LED drivers, and logic-level shifting.
- Oscillator Circuits: Suitable for low-frequency oscillator and timer circuits.
- Hobbyist Projects: Perfect for Arduino and Raspberry Pi hobby projects requiring high-voltage interface.
- Educational Labs: Commonly used in electronics courses to teach transistor fundamentals.
What's Included
- 1x 2N5551 NPN Transistor (TO-92 package)
Compatibility
- Microcontrollers: Works with Arduino, Raspberry Pi, ESP32, and other 3.3V/5V logic systems when used as a switch.
- Sensors: Can be used to interface with sensors that require higher voltage or current than the microcontroller can provide.
- Breadboards & PCBs: TO-92 package fits standard breadboards and 0.1" pitch PCBs.
MOKWN Recommendation
For Egyptian makers and engineers, the 2N5551 is a versatile addition to your component kit. Its high voltage rating makes it especially useful for projects involving 12V or 24V systems, such as motor controllers, power supply circuits, and industrial automation interfaces. Stock up on this essential transistor to ensure your prototypes and products are built with reliable components. Order now and get fast delivery across Egypt!
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