BFP640E6327

Overview

The BFP640E6327 is an NPN silicon-germanium (SiGe) RF bipolar junction transistor manufactured by Infineon Technologies. It operates with a maximum collector-emitter voltage of 4V and a continuous collector current of 50mA. The device features a transition frequency of 40GHz and a maximum power dissipation of 200mW. It is housed in a surface-mount SOT-343 package. DC current gain is specified at a minimum of 110 when tested at 30mA and 3V. Noise performance ranges from 0.65dB to 1.2dB typical values between 1.8GHz and 6GHz.

Feature Summary

• Utilizes silicon-germanium technology for high-frequency operation up to 40GHz.
• Designed for low-noise amplification applications in wireless systems.
• Suitable for cost-sensitive consumer market WLAN implementations.

Applications

• Low noise amplifier stages for 5 GHz to 6 GHz wireless local area network (WLAN) systems.
• Discrete RF front-end designs requiring high gain and low noise figures.
• Two-stage amplifier configurations for radio link range optimization.

Procurement Notes

Verify component authenticity through official Infineon channels or authorized distributors. Confirm the specific suffix matches the required tape-and-reel packaging format. Check for end-of-life status as this model may be discontinued. Ensure compatibility with existing PCB footprints for the SOT-343 package before finalizing orders.

Selection Notes

Select this component for designs prioritizing high transition frequency and low noise characteristics in the microwave spectrum. Compare against alternatives if higher voltage ratings are required, as this part is limited to 4V. Consider thermal management requirements due to the 200mW power dissipation limit in small surface-mount packages.

Part Context

This transistor belongs to the BFP640 series of SiGe RF bipolar transistors. Variants within this family include different package types such as TSFP-4 or pin configurations like E6327. These components are engineered specifically for high-performance RF applications where size and noise performance are critical constraints.

Replacement Considerations

Publicly confirmed substitute part numbers include Toshiba's 2SC5065-Y(TE85L,F). Verify electrical parameter alignment and physical footprint compatibility before substituting.