The BC847B/DG is a high-performance, small-signal NPN bipolar junction transistor (BJT) manufactured by NXP Semiconductors. This transistor is designed for general-purpose switching and amplification applications, making it a versatile component for a wide range of electronic circuits. With its excellent amplification characteristics and low power consumption, it is ideal for mobile and portable devices, as well as for power management functions in more complex electronic systems.

Key Features

• Transistor Type: NPN - This allows for efficient current amplification when a small base current controls a larger collector current.
• Package: SOT-23 - A compact surface-mount package that is suitable for automated PCB assembly processes and space-constrained applications.
• Collector-Emitter Voltage (Vceo): 45V - This rating ensures the transistor can handle moderate voltage applications without breakdown.
• Collector Current (Ic): 100mA - A suitable level for a variety of low to medium power applications.
• DC Current Gain (hFE): 200 to 450 - Indicates the transistor's ability to amplify the input signal, with a high hFE value representing greater amplification potential.
• Transition Frequency (fT): 100MHz - High-frequency performance that is adequate for RF and high-speed switching applications.
• Low Noise: The BC847B/DG exhibits low noise figures, making it an excellent choice for audio amplifiers and sensitive signal processing circuits.
• RoHS Compliant: The product meets the Restriction of Hazardous Substances Directive, ensuring it is environmentally friendly and suitable for use in a variety of markets.

Applications

The BC847B/DG is widely used in various applications due to its robust performance and reliability. Common uses include:

• Signal processing
• Low noise amplification
• Audio amplifiers
• Switching circuits
• Power management systems
• Portable and mobile devices
• Telecommunications equipment

Overall, the BC847B/DG from NXP Semiconductors is an excellent choice for designers looking for a reliable and efficient transistor that offers a balance between performance and size. Its small footprint and high electrical performance make it a go-to component for a myriad of electronic applications.