BC847CQAZ

Overview

The BC847CQAZ is an NPN general-purpose small-signal transistor manufactured by NXP Semiconductors. It is housed in a SOT-23 plastic surface-mount package. The device features a maximum collector current of 100 mA and a maximum collector-emitter voltage of 45 V. The minimum DC current gain (hFE) for the 'C' variant is specified at 420, with a maximum of 800. The transition frequency is rated at 300 MHz, and the maximum collector-emitter saturation voltage is 0.6 V. The component operates within a temperature range up to 150 °C.

Feature Summary

• NPN silicon construction designed for low-current switching and amplification tasks
• High DC current gain characteristics suitable for sensitive signal processing
• Surface-mount SOT-23 packaging optimized for automated insertion

Applications

• General purpose switching circuits
• RF amplifier input stages
• Driver applications for audio frequency signals

Procurement Notes

Verify the specific suffix 'QAZ' against the official NXP datasheet to confirm it denotes the standard tape-and-reel packaging format rather than a unique electrical variant. Ensure the ordering code matches the required SOT-23 package type and that the hFE binning aligns with the BC847C specification range. Confirm RoHS compliance status through the manufacturer's documentation.

Selection Notes

Select this component when high current gain is required for low-power NPN switching or amplification. The BC847C offers superior gain compared to A and B variants. Consider the complementary BC857C PNP transistor for matched pairs. Evaluate the SOT-23 footprint constraints and thermal dissipation requirements for the target PCB layout before finalizing the design.

Part Context

This part belongs to the BC847x series of NPN general-purpose transistors from NXP. The series includes variants with different gain ranges: BC847A, BC847B, and BC847C. These devices are widely used in consumer electronics and industrial equipment due to their reliability and standardized SOT-23 form factor. The BC847C specifically targets applications demanding higher amplification factors.

Replacement Considerations

Compatible substitutes include BC847C from other manufacturers such as Diodes Incorporated or Fairchild Semiconductor. Verify pinout compatibility and ensure the replacement meets the 100 mA current and 45 V voltage ratings.