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.