
Transistor/MOSFET
BC547 NPN Transistor
The BC547 is a general-purpose NPN bipolar junction transistor (BJT) commonly used for low-power amplification and switching applications. It features a TO-92 package and is widely available for hobbyist and professional electronics projects.
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About BC547 NPN Transistor
The BC547 is a versatile NPN epitaxial silicon transistor designed for general-purpose amplification and switching tasks. It is housed in a standard TO-92 package, making it easy to integrate into breadboards and PCBs. Key features include a collector-emitter voltage of 45V, collector current of 100mA, and a transition frequency of 300MHz, ensuring reliable performance in various circuits. This transistor is ideal for applications such as audio pre-amplification, signal processing, LED driving, and relay control. Its high hFE (DC current gain) allows for efficient signal amplification with minimal power loss. Whether you are building a hobbyist project or designing a professional circuit, the BC547 offers a cost-effective and dependable solution. Choose this component for its proven reliability, wide availability, and compatibility with countless electronic designs.
Technical Specifications
| Transistor Type | NPN |
|---|---|
| Collector-Emitter Voltage (Vceo) | 45V |
| Collector-Base Voltage (Vcbo) | 50V |
| Emitter-Base Voltage (Vebo) | 6V |
| Collector Current (Ic) | 100mA |
| DC Current Gain (hFE) | 110 to 800 |
| Transition Frequency (ft) | 300MHz |
| Package | TO-92 |
| Pins | 3 (Collector, Base, Emitter) |
| Operating Temperature | -55°C to 150°C |
Alternative Components
2N2222
BC548
BC549
BC550









