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BC557 Transistor PNP – General Purpose Low Power Amplifier & Switching Transistor
The BC557 is a widely used PNP (positive-negative-positive) bipolar junction transistor (BJT), designed for general-purpose amplification and switching applications. It is similar to the BC547 (NPN type), but the BC557 is a PNP transistor, meaning that it has opposite polarity and is used in different types of circuits. The BC557 is a popular PNP bipolar junction transistor (BJT) used for low-power amplification and switching in electronic circuits. Packaged in a compact TO-92 form, it s ideal for hobby electronics, signal processing, analog circuits, and Arduino/IoT interfacing.
₹ 3
₹ 5
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| Made In : | India |
This transistor is designed to handle small current loads and signal amplification with stable performance in low-power circuits.
Key Features
- PNP type general-purpose transistor
- Suitable for switching and amplification
- Low noise and stable performance
- High current gain (hFE)
- Easy to use in breadboard and PCB circuits
- Compatible with Arduino and microcontroller projects
- Low power consumption
- Widely available and cost-effective
Technical Specifications
| Parameter | Specification |
|---|---|
| Transistor Type | PNP |
| Model | BC557 |
| Package Type | TO-92 (DIP-style) |
| Collector Current (Ic) | Up to 100 mA |
| Collector-Emitter Voltage | -45V (max) |
| Power Dissipation | ~500 mW |
| DC Current Gain (hFE) | 110 – 800 (typical range) |
| Operating Mode | Switching / Amplification |
| Frequency Range | Low to medium frequency applications |
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