BC847,215

The BC847,215 is a general-purpose NPN bipolar junction transistor (BJT) manufactured by Nexperia, designed for a variety of electronic applications. It is commonly used in low-power switching and amplification tasks due to its favorable electrical characteristics.

Key Features:

1. Type: NPN Bipolar Junction Transistor
2. Package: The BC847,215 is typically available in a SOT23 package, which is a small, surface-mount package that allows for efficient use of space on printed circuit boards (PCBs).
3. Maximum Collector Current (Ic): The transistor can handle a maximum collector current of around 100 mA, making it suitable for low-power applications.
4. Collector-Emitter Voltage (Vce): It has a maximum collector-emitter voltage rating of 45V, allowing it to operate in a variety of voltage environments without risk of breakdown.
5. Gain (hFE): The transistor features a current gain (hFE) range of approximately 100 to 800, depending on the specific operating conditions, which makes it effective for amplification purposes.
6. Transition Frequency (fT): The BC847,215 has a transition frequency of around 100 MHz, indicating its capability for high-frequency applications.
7. Thermal Characteristics: It has a maximum junction temperature of 150°C, which provides a good thermal margin for various applications.

Applications:

• Switching Circuits: The BC847,215 is often used in low-power switching applications, such as driving small relays or controlling LED lights.
• Amplification: It is suitable for audio and RF amplification due to its high gain and frequency response.
• Signal Processing: The transistor can be utilized in signal processing circuits, where it can amplify weak signals for further processing.

Electrical Characteristics:

• Base-Emitter Voltage (Vbe): Typically around 0.7V when in the active region.
• Input and Output Capacitance: The transistor exhibits low input and output capacitance, which is beneficial for high-speed applications.

Conclusion:

The BC847,215 from Nexperia is a versatile and reliable NPN transistor that is widely used in various electronic circuits. Its compact size, combined with its robust electrical specifications, makes it an excellent choice for engineers and hobbyists looking to implement low-power switching and amplification solutions in their designs.