Description: 1. The BC557 is a PNP (Positive-Negative-Positive) general-purpose transistor available in packs of five. Its small size and versatile applications make it popular among hobbyists and professionals. 2. Features: It has a collector-emitter voltage range of 6V to 35V, making it suitable for various power supplies. The BC557 also boasts a maximum collector current of 1A and a maximum power dissipation of 30W. 3. Applications: This transistor is commonly used in simple amplifier circuits, switching applications (like relays), and as a voltage controller or voltage follower in various projects. It can also be employed in DC motor control, timer circuits, and power supplies. 4. Ease of Use: Despite its technical capabilities, the BC557 is an easy-to-use component for both beginners and experienced users due to its widespread application and availability of schematics and tutorials online. 5. Benefits over NPN Transistors: Compared to NPN transistors, PNP transistors can provide a more s
| Specification | Details |
|---|---|
| Device | Bipolar Junction Transistor (BJT) |
| Type | PNP Transistor |
| Package Type | TO-92 |
| Number of Pins | 3 |
| Collector-Emitter Voltage | ±25V |
| Emitter-Base Voltage | -25V to +5V |
| Collector Current | 100mA (max) |
| Power Dissipation | 500mW (max) |
| HFE (Current Gain) | 140 (min) 400 (typ) >700 (max) |
| Transition Frequency | 200 MHz (ft) |
| Thermal Resistance | 150°C/W |
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