BFU550XVL

Overview

The BFU550XVL is an NPN wideband silicon RF transistor from the BFU5 family, designed for high-speed and low-noise applications up to 2 GHz. It features a plastic SOT143B-4 package with dual emitters. Key electrical parameters include a maximum collector-emitter voltage (VCEO) of 12 V, a continuous collector current of 50 mA, and a transition frequency (fT) of 11 GHz at 900 MHz. The device achieves a minimum noise figure of 0.75 dB and a maximum stable gain of 21.5 dB at 900 MHz. Total power dissipation is rated at 450 mW, with an operating temperature range from -40 °C to +150 °C.

Feature Summary

• AEC-Q101 qualified for automotive reliability
• High breakdown voltage capability suitable for demanding supply conditions
• Low noise figure optimized for sensitive signal reception
• Dual-emitter SOT143B package design

Applications

• Broadband amplifiers up to 2 GHz
• Low noise amplifiers for ISM band applications
• ISM band oscillators
• Automotive remote keyless entry systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm AEC-Q101 qualification status if required for automotive integration. Ensure proper ESD handling procedures are followed during storage and assembly due to sensitivity. Review the latest datasheet revision for any updates to absolute maximum ratings or thermal characteristics before finalizing procurement specifications.

Selection Notes

Select this component for designs requiring high linearity and low noise in the sub-2 GHz spectrum. Evaluate the 12 V collector-emitter breakdown voltage against circuit supply requirements. Consider the 450 mW power dissipation limit and associated thermal resistance when designing heat management solutions. Verify that the SOT143B footprint matches the PCB layout constraints and soldering profile capabilities.

Part Context

The BFU550X belongs to the BFU5xx series of wideband RF transistors manufactured by NXP Semiconductors. This family targets mass production solutions for automotive, IoT, and broadband markets. The BFU550X specifically offers robust performance as an economical alternative to competitors, providing high gain and low noise figures within a standard surface-mount package suitable for automated assembly processes.

Replacement Considerations

Consult official NXP documentation for verified cross-references. No specific substitute part numbers are confirmed in the provided source material.