BC847ALT1G

The BC847ALT1G is a general-purpose NPN bipolar junction transistor (BJT) manufactured by ON Semiconductor. It is designed for a variety of applications, including switching and amplification in low-power electronic circuits. Here’s a detailed description of its key features and specifications:

Package and Form Factor

• Package Type: The BC847ALT1G is typically available in a SOT-23 package, which is a small, surface-mount package that allows for efficient use of space on printed circuit boards (PCBs).
• Dimensions: The SOT-23 package has compact dimensions, making it suitable for applications where space is a constraint.

Electrical Characteristics

• Transistor Type: NPN
• Collector-Emitter Voltage (Vce): The maximum collector-emitter voltage is typically rated at 45V, allowing it to handle a wide range of voltage applications.
• Collector Current (Ic): The maximum collector current is rated at 100mA, making it suitable for low to moderate current applications.
• Gain (hFE): The DC current gain (hFE) ranges from 100 to 600, depending on the specific operating conditions, which indicates its efficiency in amplifying signals.

Thermal Characteristics

• Junction Temperature (Tj): The maximum junction temperature is rated at 150°C, which provides a good thermal margin for various operating environments.
• Thermal Resistance: The thermal resistance from junction to ambient is low, allowing for effective heat dissipation during operation.

Switching Characteristics

• Transition Frequency (fT): The transition frequency is typically around 100 MHz, which indicates the frequency range over which the transistor can effectively operate.
• Rise and Fall Times: The BC847ALT1G has fast switching times, making it suitable for high-speed applications.

Applications

The BC847ALT1G is widely used in:

• Signal amplification in audio and radio frequency applications.
• Switching applications in digital circuits.
• General-purpose amplification in consumer electronics.
• Low-power applications in battery-operated devices.

Additional Features

• Lead-Free: The BC847ALT1G is compliant with RoHS standards, meaning it is free from lead and other hazardous substances, making it environmentally friendly.
• Reliability: ON Semiconductor ensures high reliability and performance consistency, making this transistor a trusted choice for engineers and designers.

Conclusion

The BC847ALT1G from ON Semiconductor is a versatile and reliable NPN transistor suitable for a wide range of electronic applications. Its compact size, robust electrical characteristics, and compliance with environmental standards make it an excellent choice for modern electronic designs.