BC847CW

The BC847CW is a small-signal NPN bipolar junction transistor (BJT) manufactured by NXP Semiconductors. It is designed for general-purpose amplification and switching applications. Here’s a detailed description of its key features and specifications:

Package and Physical Characteristics:

• Package Type: The BC847CW is typically housed in a SOT-23 package, which is a compact, surface-mount package that allows for efficient use of board space.
• Dimensions: The SOT-23 package generally measures approximately 2.9 mm x 1.3 mm x 1.1 mm, making it suitable for applications where space is a constraint.
• Pin Configuration: The transistor has three pins, which are usually designated as the collector (C), base (B), and emitter (E). The pin configuration is critical for proper circuit integration.

Electrical Characteristics:

• Maximum Collector Current (Ic): The BC847CW can handle a maximum collector current of around 100 mA, making it suitable for low-power applications.
• Collector-Emitter Voltage (Vce): It has a maximum collector-emitter voltage rating of 45 V, allowing it to operate in a variety of voltage environments.
• Gain (hFE): The transistor exhibits a current gain (hFE) in the range of 100 to 800, depending on the specific operating conditions, which makes it effective for amplification purposes.
• Transition Frequency (fT): The transition frequency is typically around 100 MHz, indicating its capability for high-frequency applications.

Thermal Characteristics:

• Junction Temperature (Tj): The maximum junction temperature is rated at 150 °C, which provides a good thermal margin for reliable 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 BC847CW is widely used in various applications, including:

• Signal Amplification: It is commonly used in audio and RF amplification circuits.
• Switching Applications: The transistor can be used in digital circuits for switching purposes, such as in logic gates and relay drivers.
• Voltage Regulation: It can be part of voltage regulation circuits, providing stable output in power supply designs.

Additional Features:

• Low Noise: The BC847CW is designed to operate with low noise levels, making it suitable for sensitive audio and RF applications.
• High Reliability: NXP Semiconductors ensures that the BC847CW meets stringent quality standards, providing high reliability for consumer and industrial applications.

In summary, the BC847CW from NXP Semiconductors is a versatile and reliable small-signal NPN transistor that is well-suited for a variety of electronic applications, thanks to its compact size, robust electrical characteristics, and thermal performance.