BFP405E6740HTSA1

Overview

The BFP405E6740HTSA1 is a low noise silicon bipolar RF transistor designed for low current applications and oscillators up to 12 GHz. It features a minimum noise figure of 1.25 dB at 1.8 GHz and an outstanding maximum stable gain of 23 dB at the same frequency. The device operates with a collector-emitter voltage of 4.5 V, a collector current of 25 mA, and a total power dissipation of 75 mW. Packaged in SOT-343 (SOT343), it supports surface mount installation and includes AEC-Q101 qualification.

Feature Summary

• Optimized for low current applications and oscillator circuits operating up to 12 GHz
• Delivers high performance with a minimum noise figure of 1.25 dB and maximum stable gain of 23 dB at 1.8 GHz
• Compliant with RoHS standards and halogen-free packaging requirements

Applications

• Low noise amplifier stages in RF front ends
• Oscillator circuits operating up to 12 GHz
• Low current RF signal processing applications

Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number BFP405E6740HTSA1 with official Infineon documentation. Confirm package type matches SOT-343 specifications and check for AEC-Q101 qualification status. Ensure handling precautions are followed due to ESD sensitivity.

Selection Notes

Select this component when designing circuits requiring minimal noise figures around 1.8 GHz with low bias currents. The device is suitable for applications demanding high stability and low power consumption within a compact SOT-343 footprint. Evaluate thermal constraints carefully as total power dissipation is limited to 75 mW.

Part Context

This component belongs to the BFP405 series of low noise silicon bipolar RF transistors manufactured by Infineon Technologies. The series is engineered for high-frequency performance in compact packages, supporting designs that require precise noise control and reliable operation in low-power RF environments.

Replacement Considerations

Consult official Infineon resources for verified substitute part numbers. Do not assume functional equivalence with other models without verifying electrical parameters and pin configurations against the datasheet.

FAQ

What is the maximum operating frequency for oscillators using this transistor?

The BFP405 is designed for use in oscillator circuits operating up to 12 GHz.

How does the transition frequency compare to the maximum stable gain frequency?

The transition frequency (fT) is specified at 2 GHz, while the maximum stable gain (Gms) of 23 dB is measured at 1.8 GHz.

Is the BFP405 qualified for automotive applications?

Yes, a qualification report according to AEC-Q101 is available for this component.