The ON Semiconductor BC556B is a high-quality PNP bipolar junction transistor (BJT) designed for general-purpose amplifier and switching applications. This versatile component is widely recognized for its reliability and performance, making it an ideal choice for a broad range of electronic circuits.
Key Features
- PNP Transistor: The BC556B is a PNP transistor, which means it is controlled by a negative current and is mainly used for positive voltage regulation in various circuits.
- High Current Gain: With a high current gain (hFE), typically around 125 to 800, this transistor can amplify weak signals into stronger ones, making it suitable for audio amplifiers and signal processing.
- Low Voltage Operations: It operates at a maximum collector-emitter voltage (VCEO) of -65V, which allows it to be used in low-voltage applications.
- Low Noise: The BC556B exhibits low noise figures, which is essential for applications where signal integrity is crucial.
- TO-92 Package: Enclosed in a TO-92 package, the BC556B is easy to install and provides a compact solution for PCB layouts.
Applications
The ON Semiconductor BC556B is suitable for a variety of applications, including:
- Audio Amplifiers
- Signal Processing
- Driver Stages in Hi-Fi Amplifiers and Television Circuits
- Switching Operations
- Voltage Regulation Modules
Technical Specifications
Parameter
Value
Transistor Polarity
PNP
Collector-Emitter Voltage (VCEO)
-65V
Collector-Base Voltage (VCBO)
-80V
Emitter-Base Voltage (VEBO)
-5V
Collector Current (IC)
-100mA
Power Dissipation (Pd)
625mW
DC Current Gain (hFE)
125 - 800
With its robust design and consistent performance, the ON Semiconductor BC556B stands out as a reliable component for designers and engineers looking to enhance their electronic projects.
