BC847B-7-F

The BC847B-7-F is a general-purpose NPN bipolar junction transistor (BJT) manufactured by Diodes Incorporated. It is designed for a variety of applications, including switching and amplification in electronic circuits. Here’s a detailed description of its key features and specifications:

Package and Form Factor

• Package Type: The BC847B-7-F is typically available in a small SOT-23 package, which is a surface-mount device (SMD). This compact form factor makes it suitable for space-constrained applications on printed circuit boards (PCBs).
• Dimensions: The SOT-23 package generally measures approximately 2.9 mm x 1.3 mm x 1.1 mm, allowing for efficient use of board space.

Electrical Characteristics

• Transistor Type: NPN
• Maximum Collector-Emitter Voltage (Vce): The BC847B-7-F can handle a maximum Vce of 45V, making it suitable for a wide range of applications.
• Maximum Collector Current (Ic): It has a maximum collector current rating of 100 mA, which allows it to drive small loads effectively.
• DC Current Gain (hFE): The transistor exhibits a DC current gain (hFE) in the range of 100 to 600, depending on the collector current, which indicates its efficiency in amplifying signals.
• Transition Frequency (fT): The transition frequency is typically around 100 MHz, allowing for high-speed switching applications.

Thermal Characteristics

• Junction Temperature (Tj): The maximum junction temperature is rated at 150°C, providing a good thermal margin for operation in various environments.
• Thermal Resistance: The thermal resistance from junction to ambient is low, which helps in dissipating heat effectively during operation.

Applications

The BC847B-7-F is widely used in:

• Signal Amplification: It is suitable for low-frequency amplification in audio and RF applications.
• Switching Applications: The transistor can be used in digital circuits for switching tasks, such as driving LEDs or relays.
• General Purpose: Its versatility makes it a common choice in consumer electronics, automotive applications, and industrial control systems.

Additional Features

• Lead-Free: The BC847B-7-F is compliant with RoHS standards, making it an environmentally friendly choice for modern electronic designs.
• High Reliability: Diodes Incorporated is known for producing reliable components, and the BC847B-7-F is no exception, ensuring long-term performance in various applications.

Conclusion

The BC847B-7-F from Diodes Incorporated is a robust and versatile NPN transistor that meets the needs of a wide range of electronic applications. Its compact size, high voltage and current ratings, and excellent gain characteristics make it a popular choice among engineers and designers in the electronics industry.