BFU550AVL

Overview

The BFU550AVL is an NPN silicon RF transistor designed for high-speed, low-noise applications in a plastic SOT23 package. It belongs to the BFU5 family, suitable for small signal to medium power applications up to 2 GHz. Key electrical parameters include a collector-emitter voltage (VCEO) of 12 V, a maximum collector current (IC) of 50 mA, and a transition frequency (fT) of 11 GHz at IC = 25 mA and VCE = 8 V. The device offers a minimum noise figure (NFmin) of 0.6 dB at 900 MHz and a maximum stable gain of 18 dB at the same frequency. It features a DC current gain (hFE) ranging from 60 to 200.

Feature Summary

• AEC-Q101 qualified for automotive reliability
• Low noise performance with high breakdown voltage
• Broadband operation capability up to 2 GHz

Applications

• Broadband amplifiers up to 2 GHz
• Low noise amplifiers for ISM applications
• ISM band oscillators

Procurement Notes

Verify the specific suffix 'VL' against the official datasheet to confirm packaging or marking variations. Ensure the component meets AEC-Q101 requirements if used in automotive designs. Confirm availability status as distribution channels may vary. Validate that the SOT23 package matches the design constraints. Check for any recent product lifecycle changes or obsolescence notices from NXP Semiconductors before finalizing procurement plans.

Selection Notes

Select this component for designs requiring low noise figures below 1 dB at 900 MHz. Consider the 12 V collector-emitter voltage rating for circuits needing higher supply voltages compared to standard RF transistors. Evaluate the 11 GHz transition frequency for broadband applications extending beyond typical cellular bands. Ensure biasing conditions align with the recommended operating conditions for optimal gain and linearity performance.

Part Context

The BFU550AVL is part of the BFU5 series of NPN wideband silicon RF transistors manufactured by NXP Semiconductors. This series is engineered for small signal to medium power applications. The device utilizes 11 GHz fT silicon technology to support high-frequency operations. It is housed in a compact SOT23 surface-mounted package, facilitating integration into space-constrained PCB layouts for RF front-end modules.

Replacement Considerations

Consult the NXP BFU5 family documentation for potential substitutes within the same series. Verify pin compatibility and electrical parameter overlaps with other NXP RF transistors. Cross-reference specifications such as noise figure, gain, and voltage ratings to ensure functional equivalence in the target application circuit.