BC817-40W RFG

Overview

The BC817-40W RFG is an NPN silicon general-purpose transistor manufactured by Taiwan Semiconductor Corporation. It operates with a maximum collector-emitter voltage of 45 V and supports a continuous collector current of 500 mA. The device features a transition frequency of 100 MHz and a maximum power dissipation of 200 mW. It is housed in a surface-mount SOT-323 package, suitable for compact circuit designs.

Feature Summary

• NPN silicon construction for general-purpose switching and amplification
• High current capability up to 500 mA
• Compact SOT-323 surface-mount packaging

Applications

• General-purpose switching circuits
• Amplifier stages
• Driver applications

Procurement Notes

Verify the specific suffix 'RFG' against the manufacturer's official datasheet to confirm exact binning or tape-and-reel specifications. Ensure the component matches the required AEC-Q101 qualification if automotive standards are mandated. Cross-reference the part number with authorized distributors to confirm availability and authenticity before procurement.

Selection Notes

Select this component when a small SOT-323 footprint is required for NPN switching tasks. It offers a balance of 45 V breakdown and 500 mA current handling. Consider the 200 mW power limit for thermal management. Compare with BC817-40 variants in different packages if higher power dissipation is needed.

Part Context

This part belongs to the BC817 series of NPN general-purpose transistors. The series includes variants with different DC current gain ranges, such as BC817-16 and BC817-25. The BC817-40 variant specifically denotes a standard gain range suitable for general applications. The W suffix typically indicates the SOT-323 package type.

Replacement Considerations

BC817-40W-AQ (Diotec Semiconductor) offers equivalent electrical parameters and AEC-Q101 qualification. BC817-40W,115 (Nexperia) provides similar performance in the same SOT-323 package. Verify pinout compatibility and gain binning before substitution.