BFU520WX

Overview

The BFU520WX is an NPN wideband silicon RF transistor from the BFU5 family, designed for high-speed, low-noise applications up to 2 GHz. It features a plastic SOT323 surface-mounted package with three leads. Key electrical parameters include a collector-emitter voltage (VCEO) of 12 V and a maximum DC collector current of 30 mA. The device achieves a minimum noise figure of 0.6 dB at 900 MHz and a maximum stable gain of 18.5 dB at the same frequency. It utilizes 11 GHz fT silicon technology and supports a total power dissipation of 450 mW.

Feature Summary

• AEC-Q101 qualified for automotive reliability
• Low noise performance optimized for sensitive signal reception
• High breakdown voltage capability for robust operation

Applications

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

Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm the specific suffix 'WX' matches the required packaging format. Ensure compliance with RoHS directives and check for any end-of-life notices regarding production status before finalizing procurement plans.

Selection Notes

Select this component when designing circuits requiring high supply voltages combined with low noise characteristics. Evaluate thermal management requirements carefully, as the small SOT323 package limits heat dissipation. Verify that the operating frequency range aligns with the specified transition frequency and gain bandwidth for optimal circuit performance.

Part Context

The BFU520WX belongs to the BFU5 series of NPN wideband silicon RF transistors manufactured by NXP Semiconductors. This series is engineered for small-signal to medium-power applications in the radio frequency spectrum. The WX suffix typically denotes specific tape-and-reel packaging configurations for automated assembly processes.

Replacement Considerations

BFU520YX