BFP540FESDE6327

Overview

The BFP540FESDE6327 is a surface-mount robust silicon NPN RF bipolar transistor based on the grounded emitter SIEGET™ technology. It features a minimum noise figure of 0.9 dB at 1.8 GHz and a maximum stable power gain of 21.5 dB under standard test conditions. The device provides high ESD robustness, typically rated at 1 kV (HBM), while maintaining cost competitiveness. It operates with a collector-emitter voltage up to 4.5 V and supports a transition frequency of 30 GHz. Qualified for industrial applications per AEC-Q101 standards, it is housed in an SOT-343 package.

Feature Summary

• Low noise performance optimized for sensitive radio-frequency signal amplification
• High linearity characterized by a third-order intercept point of 24.5 dBm
• Robust electrostatic discharge protection structure integrated into the design

Applications

• Radio-frequency oscillators such as local oscillators in LNBs
• Broadband low noise amplifiers for CATV, DVB-T, DAB/DMB, and FM/AM radio
• Low noise amplifiers for wireless communications including cordless phones

Procurement Notes

Verify the exact ordering code against official Infineon documentation before procurement. Confirm that the specific suffix matches the required tape-and-reel quantity and packaging specifications. Ensure handling precautions are strictly followed due to the device's sensitivity to electrostatic discharge during storage and assembly processes.

Selection Notes

Select this component for designs requiring high gain and minimal noise addition in the 0.9 GHz to 6 GHz range. Evaluate the biasing requirements carefully, as the optimal noise figure occurs at 5 mA while maximum gain requires 20 mA. Consider the thermal resistance characteristics when designing the PCB layout to ensure reliable operation within the specified junction temperature limits.

Part Context

This part belongs to Infineon’s fifth-generation RF bipolar transistor family. It utilizes the established SIEGET™ architecture to deliver high reliability and ease of use. The product is qualified according to JEDEC JESD47, JESD22, and J-STD-020 standards for industrial applications, ensuring consistent performance across various environmental conditions.

Replacement Considerations

Consult the official datasheet for direct pin-compatible alternatives within the same series. Verify that any substitute maintains the required SOT-343 footprint and meets the specific electrical thresholds for noise figure and gain.