onsemi

BC639G

BC639G Description

The BC639G is a single NPN Bipolar Transistor manufactured by onsemi. This through-hole mounted device operates at a frequency of 200MHz and has a maximum current of 1A. It offers a Vce saturation of 500mV at 50mA and 500mA, making it suitable for low-power applications. The BC639G has a maximum collector-emitter breakdown voltage of 80V and a maximum power rating of 625mW. With a minimum DC current gain of 40 at 150mA and 2V, this transistor provides reliable performance. It is classified as EAR99, REACH unaffected, and has a moisture sensitivity level of 1, indicating unlimited storage time before baking is required.

BC639G Features

• 200MHz frequency transition
• 1A maximum collector current
• 500mV Vce saturation at 50mA and 500mA
• 80V maximum collector-emitter breakdown voltage
• 625mW maximum power rating
• Minimum DC current gain of 40 at 150mA and 2V
• Through-hole mounting type
• NPN transistor type
• EAR99, REACH unaffected, and MSL 1 classifications

BC639G Applications

The BC639G's unique combination of high-frequency operation, low power consumption, and robust voltage and current ratings make it ideal for various applications. Some specific use cases include:

1. Low-power audio amplifiers
2. RF and IF amplifiers in communication systems
3. Switching applications in power electronics
4. General-purpose amplification in consumer electronics

Conclusion of BC639G

The BC639G is a versatile NPN Bipolar Transistor that offers excellent performance in low-power, high-frequency applications. Its unique features, such as a high-frequency transition and low Vce saturation, set it apart from similar models. While it is now considered obsolete, the BC639G remains a reliable choice for various applications where its specific performance characteristics are required. Its robust voltage and current ratings, along with its moisture sensitivity level, make it suitable for a wide range of electronic devices.