BFU530WX

Overview

The BFU530WX is an NPN silicon RF transistor in a SOT323 package, designed for high-speed, low-noise applications up to 2 GHz. It features 11 GHz fT technology and AEC-Q101 qualification. Key electrical parameters include a collector-base voltage of 24 V, collector-emitter voltage of 12 V (open base) or 24 V (shorted base), and total power dissipation of 450 mW at Tsp ≤ 87 °C. At 900 MHz with IC = 10 mA and VCE = 8 V, it provides a maximum stable gain of 18.5 dB and a minimum noise figure of 0.6 dB.

Feature Summary

• AEC-Q101 qualified for automotive reliability
• Low noise figure suitable for sensitive receiver front-ends
• High breakdown voltage capability for robust operation
• 11 GHz transition frequency for broadband performance

Applications

• Broadband amplifiers operating up to 2 GHz
• Low noise amplifiers for ISM band applications
• ISM band oscillators requiring high supply voltages

Procurement Notes

Verify the specific suffix 'W' against the manufacturer's current ordering information to confirm package type and availability status. Confirm that the component meets the required AEC-Q101 automotive qualification standards for the intended application environment. Ensure proper ESD handling procedures are followed during storage and assembly due to the sensitivity of the silicon RF structure.

Selection Notes

Select this device when designing circuits requiring a balance of low noise and moderate gain in a compact surface-mount footprint. The SOT323 package limits thermal dissipation; ensure adequate board layout for heat transfer to maintain junction temperature within safe operating limits. Consider the 12 V collector-emitter rating when selecting biasing networks for standard 3.3 V or 5 V systems.

Part Context

The BFU530W belongs to the BFU5 family of NPN wideband silicon RF transistors, which also includes the BFU520W and BFU550W variants. These components share similar packaging and design support resources, such as the OM7960 evaluation kit. The family is optimized for small-signal to medium-power applications in the UHF and L-band frequencies.

Replacement Considerations

BFU520W and BFU550W are part of the same evaluation kit and family but have different power and gain characteristics. Direct substitution requires verifying that the alternative device meets the specific gain, noise, and voltage requirements of the original circuit design.