BFU520XRVL

Overview

The BFU520XRVL is an NPN wideband silicon RF transistor from the BFU5 family, designed for high-speed, low-noise applications up to 2 GHz. It utilizes 11 GHz fT technology and features a plastic SOT143R package with reverse pinning. The device is AEC-Q101 qualified and offers a minimum noise figure of 0.65 dB at 900 MHz with a maximum stable gain of 20 dB at the same frequency. Key electrical limits include a collector-base voltage of 24 V (open emitter) or 30 V (shorted base), a collector-emitter voltage of 12 V (open base) or 24 V (shorted base), and a total power dissipation of 450 mW.

Feature Summary

• Low noise performance suitable for sensitive RF front-end stages
• High breakdown voltage capability for robust operation
• Automotive Electronics Council qualification for reliability

Applications

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

Procurement Notes

Verify the specific suffix against official documentation to confirm manufacturing origin details. Ensure compatibility with the SOT143R footprint and reverse pin configuration during procurement. Confirm that the component meets the required automotive qualification standards if deployed in vehicle systems. Cross-reference the ordering information table to validate the exact part number variant before placing orders.

Selection Notes

Select this component for designs requiring high supply voltages and high breakdown characteristics within small signal to medium power ranges. Evaluate the trade-off between noise figure and gain based on the specific collector current requirements. Consider the thermal resistance characteristics when designing heat dissipation paths for the surface-mounted package.

Part Context

This transistor belongs to the BFU5 series of NPN wideband silicon RF transistors manufactured by NXP Semiconductors. The series includes variants such as the BFU520A, BFU520YX, and BFU530XR, all sharing similar low-noise, high-breakdown technologies optimized for frequencies up to 2 GHz. The BFU520XR specifically distinguishes itself through its SOT143R packaging and reverse pinning arrangement.

Replacement Considerations

BFU520A

FAQ

What is the transition frequency of the BFU520XR?

The transition frequency is typically 10.5 GHz under conditions of IC = 10 mA and VCE = 8 V.

How does the collector-emitter voltage rating change with base configuration?

With the base open, the maximum collector-emitter voltage is 12 V. With the base shorted to the emitter, it increases to 24 V.

Is the BFU520XR suitable for automotive applications?

Yes, the device is AEC-Q101 qualified, indicating suitability for automotive electronics environments.