ON Semiconductor BC557B - PNP Bipolar Transistor
The BC557B from ON Semiconductor is a PNP bipolar junction transistor (BJT) known for its high reliability and performance. This small-signal transistor is particularly suited for low-power applications and is commonly used in amplification and switching functions.
Key Features:
- Voltage Ratings: The BC557B has a collector-emitter voltage (VCEO) of -45V, a collector-base voltage (VCBO) of -50V, and an emitter-base voltage (VEBO) of -5V, making it suitable for a range of electronic circuits.
- Current Ratings: It can handle a continuous collector current (IC) up to -100mA, providing sufficient capacity for a variety of low-power tasks.
- Power Dissipation: With a power dissipation (Ptot) of 500mW, it can adequately dissipate the heat generated during operation.
- Gain Bandwidth Product (fT): It has a transition frequency of 150MHz, which is indicative of the transistor's ability to operate effectively at higher frequencies.
- High Current Gain: The BC557B boasts a high DC current gain (hFE) range of 125 to 800, offering a robust amplification factor for incoming signals.
Applications:
The versatility of the BC557B allows it to be used in a wide array of applications, including but not limited to:
- General purpose amplification
- Switching applications
- Audio amplifiers
- Signal processing
- Driver stages in hi-fi amplifiers and television circuits
Package and Quality:
The BC557B is offered in a TO-92 package, which is a through-hole device that is easy to handle and solder, even for hobbyists. ON Semiconductor's commitment to quality ensures that each transistor meets stringent standards for performance and reliability.
Environmental Compliance:
Adhering to environmental regulations, the BC557B from ON Semiconductor is manufactured with the consideration of eco-friendly use. It complies with RoHS directives, which restricts the use of certain hazardous substances in electrical and electronic equipment.
