BC817-25-7-F

The BC817-25-7-F is a general-purpose NPN bipolar junction transistor (BJT) manufactured by Diodes Incorporated. It is designed for a variety of switching and amplification applications in electronic circuits. Here’s a detailed description of its key features and specifications:

Package and Form Factor

• Package Type: The BC817-25-7-F is typically available in a surface-mount package, specifically the SOT-23 package, which is compact and suitable for high-density circuit designs.
• Dimensions: The SOT-23 package has a small footprint, making it ideal for space-constrained applications.

Electrical Characteristics

• Type: NPN transistor, which means it can be used to switch or amplify electronic signals.
• Collector-Emitter Voltage (Vce): The maximum voltage that can be applied between the collector and emitter is typically around 45V, making it suitable for a wide range of applications.
• Collector Current (Ic): The maximum continuous collector current is approximately 800mA, allowing it to handle moderate loads.
• Gain (hFE): The DC current gain (hFE) can range 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 usually 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.

Switching Characteristics

• Turn-On Time: The BC817-25-7-F has a fast turn-on time, making it suitable for high-speed switching applications.
• Storage Time: It also features a short storage time, which is beneficial for applications requiring rapid switching cycles.

Applications

The BC817-25-7-F is widely used in:

• Signal amplification in audio and radio frequency applications.
• Switching applications in power management circuits.
• Driving small loads such as LEDs, relays, and other electronic components.
• General-purpose applications in consumer electronics, automotive, and industrial devices.

Additional Features

• RoHS Compliance: The BC817-25-7-F is compliant with the Restriction of Hazardous Substances (RoHS) directive, ensuring it is free from certain hazardous materials.
• Reliability: The device is designed for high reliability and longevity, making it suitable for both consumer and industrial applications.

Conclusion

The BC817-25-7-F from Diodes Incorporated is a versatile and reliable NPN transistor that offers a combination of good electrical performance, compact size, and thermal efficiency. Its wide range of applications and robust specifications make it a popular choice among engineers and designers in the electronics industry.