Infineon BC847CE6327 General-Purpose NPN Bipolar Junction Transistor (BJT) - Datasheet and Application Notes

The Infineon BC847CE6327 is a widely-used NPN bipolar junction transistor (BJT) designed for general-purpose amplification and switching applications. Housed in a compact SOT-23 surface-mount package, this transistor is part of the BC847 series, which is known for its reliability, performance, and versatility in low-power circuits. With its high current gain and low saturation voltage, the BC847CE6327 is a popular choice among electronics designers for a broad range of applications, from consumer electronics to industrial control systems.

Key Features and Specifications

The BC847CE6327 offers several important electrical characteristics that make it suitable for diverse circuit designs:

- Collector-Emitter Voltage (VCEO): 45 V

- Collector Current (IC): 100 mA

- Power Dissipation (Ptot): 250 mW

- DC Current Gain (hFE): 420 to 800 (at IC = 2 mA, VCE = 5 V)

- Low Noise Figure, making it ideal for signal amplification stages.

- High Gain Bandwidth Product, supporting operation in RF and audio applications.

The device is also characterized by its dual marking system, which simplifies identification during PCB assembly, and its lead-free packaging, complying with modern environmental standards.

Datasheet Overview

The datasheet for the BC847CE6327 provides detailed information on absolute maximum ratings, thermal characteristics, and electrical properties. Key sections include:

- Absolute Maximum Ratings: Guidelines for voltages, currents, and power dissipation to ensure safe operation.

- Thermal Resistance: Data for junction-to-ambient and junction-to-case resistance, critical for thermal management.

- Electrical Characteristics: Tables outlining parameters such as saturation voltage, gain, and transition frequency.

- Package Dimensions: Mechanical drawings for PCB footprint design.

Application Notes

The BC847CE6327 is commonly used in:

1. Amplification Circuits: Due to its high hFE and low noise, it is ideal for pre-amplifiers in audio and RF systems.

2. Switching Applications: Its fast switching speed makes it suitable for driving relays, LEDs, and other low-power loads.

3. Signal Processing: Used in oscillators, modulators, and analog signal processing stages.

4. Interface Circuits: Acts as a buffer or level shifter between microcontrollers and external devices.

Designers should consider:

- Using appropriate base resistors to limit base current and avoid saturation.

- Ensuring adequate heat dissipation in high-duty-cycle applications.

- Checking the gain bandwidth product (fT = 300 MHz) for high-frequency designs.

Conclusion

The Infineon BC847CE6327 is a robust, general-purpose NPN transistor that combines high performance with versatility. Its detailed datasheet and broad applicability make it a fundamental component in modern electronic design.

ICGOODFIND: A reliable and efficient choice for amplification and switching, the BC847CE6327 excels in low-power circuits with its high gain and compact form factor.

Keywords:

NPN Transistor

General-Purpose BJT

High Current Gain

Switching Applications

SOT-23 Package