BC549CG

Single Bipolar Transistors Overview

The BC549CG is an NPN silicon epitaxial planar transistor manufactured by onsemi, housed in a TO-92 (SOT-54) plastic package. It serves as a general-purpose low-noise device with a maximum collector current of 100 mA and a collector-emitter breakdown voltage of 45 V. The component features a minimum DC current gain (hFE) of 450 at a collector current of 2 mA and a collector-emitter voltage of 5 V. It operates within a junction temperature range of -65°C to +150°C and has a maximum power dissipation of 500 mW.

Single Bipolar Transistors Feature Summary

• Low noise performance suitable for sensitive signal amplification
• High DC current gain for efficient signal control
• General-purpose design for versatile circuit integration

Single Bipolar Transistors Applications

• Low noise stages in audio frequency equipment
• General purpose amplifiers
• Switching applications

Single Bipolar Transistors Procurement Notes

Verify the specific suffix 'CG' against the official onsemi datasheet to confirm pinout and electrical tolerances match your design requirements. Ensure the package type corresponds to the required PCB footprint. Confirm RoHS compliance status if environmental regulations apply to your manufacturing process. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and traceability.

Single Bipolar Transistors Selection Notes

Select this component when low noise characteristics are critical for audio or RF pre-amplification stages. The high hFE rating makes it suitable for applications requiring significant current gain from small input signals. Consider the TO-92 package constraints regarding thermal dissipation and mounting orientation. Compare against BC548 series variants if lower gain specifications are acceptable for cost reduction.

Single Bipolar Transistors Part Context

The BC549C belongs to a family of NPN general-purpose transistors designed for low-noise applications. The 'G' suffix typically indicates Green/RoHS compliant packaging. This device complements the PNP BC559C transistor. It is widely used in consumer electronics and industrial control systems where reliable switching and amplification are required.

Single Bipolar Transistors Replacement Considerations

BC549B

Single Bipolar Transistors FAQ

What is the maximum collector-emitter voltage for the BC549CG?

The maximum collector-emitter breakdown voltage (V(BR)CEO) is 45 V.

What is the minimum DC current gain (hFE) specified for this transistor?

The minimum DC current gain is 450, measured at a collector current of 2 mA and a collector-emitter voltage of 5 V.

Is the BC549CG suitable for audio frequency applications?

Yes, it is specifically designed for low noise stages in audio frequency equipment due to its low noise characteristics.