BC847B,215

The BC847B,215 is a general-purpose NPN bipolar junction transistor (BJT) manufactured by Nexperia, a well-known semiconductor company. This transistor is designed for a variety of applications, including switching and amplification in electronic circuits.

Key Features:

1. Type: NPN Bipolar Junction Transistor
2. Package: The BC847B is typically available in a SOT-23 package, which is a small, surface-mount package that allows for efficient use of space on printed circuit boards (PCBs).
3. Pin Configuration: The SOT-23 package usually has three pins:
   • Pin 1 (Emitter): The terminal through which current flows out of the transistor.
   • Pin 2 (Base): The terminal that controls the transistor's operation; a small current at this pin allows a larger current to flow from collector to emitter.
   • Pin 3 (Collector): The terminal through which current flows into the transistor.

Electrical Characteristics:

• Collector-Emitter Voltage (Vce): The maximum voltage that can be applied between the collector and emitter terminals is typically around 45V.
• Emitter-Base Voltage (Veb): The maximum voltage between the emitter and base is usually around 5V.
• Collector Current (Ic): The maximum continuous collector current is approximately 100mA, making it suitable for low to moderate power applications.
• DC Current Gain (hFE): The transistor has a current gain (hFE) ranging from 100 to 800, depending on the operating conditions, which indicates its efficiency in amplifying current.

Applications:

The BC847B,215 is widely used in various electronic applications, including:

• Signal Amplification: It can amplify weak signals in audio and radio frequency applications.
• Switching: It is suitable for switching applications in digital circuits, allowing control of larger loads with smaller input signals.
• Level Shifting: It can be used to interface between different voltage levels in mixed-signal systems.

Thermal Characteristics:

• Junction Temperature (Tj): The maximum junction temperature is typically around 150°C, which allows for operation in a range of environments.
• Thermal Resistance: The thermal resistance from junction to ambient is low, which helps in dissipating heat effectively during operation.

Conclusion:

The BC847B,215 from Nexperia is a versatile and reliable NPN transistor that is suitable for a wide range of electronic applications. Its compact size, combined with its robust electrical characteristics, makes it a popular choice among engineers and designers for both hobbyist and professional projects.