BF2040RE6814HTSA1

Overview

The BF2040RE6814HTSA1 is a silicon N-channel MOSFET tetrode designed for low noise and high gain applications in controlled input stages up to 1 GHz. It operates at a drain-source voltage of 8 V with a continuous drain current of 40 mA and total power dissipation of 200 mW. The device provides a typical power gain of 23 dB and a noise figure of 1.6 dB at 800 MHz, tested at VDS = 5 V, ID = 15 mA, and VG2S = 4 V. It features a gate control range of approximately 50 dB and is housed in an SOT-143R surface-mount package.

Feature Summary

• Tetrode configuration enables high gain and low noise performance for RF signal processing
• Integrated Gate 2 biasing allows for wide dynamic gain control range
• Qualified according to AEC-Q101 standards for automotive reliability

Applications

• Low noise, high gain controlled input stages
• RF front-end circuits operating up to 1 GHz
• Automotive electronic systems requiring qualified RF components

Procurement Notes

Verify component authenticity through authorized Infineon channels or certified distributors. Confirm the specific ordering suffix matches the required SOT-143R package variant. Ensure handling precautions are observed due to ESD sensitivity. Check for RoHS compliance status and verify that the part meets the required AEC-Q101 qualification standards for the intended application environment.

Selection Notes

Select this component when designing RF stages requiring high gain and low noise figures around 800 MHz to 1 GHz. Consider the 8 V maximum drain-source voltage and 200 mW power dissipation limits during thermal design. The SOT-143R package requires appropriate surface mount assembly processes. Evaluate the need for external biasing networks for Gate 1 and Gate 2 to achieve the desired operating point and gain control characteristics.

Part Context

This part belongs to the BF2040 family of silicon N-channel MOSFET tetrodes from Infineon Technologies. Other variants in the series include the BF2040 (SOT143 package) and BF2040W (SOT343 package). All variants share identical electrical characteristics but differ in physical package dimensions and pin configurations. The BF2040RE6814HTSA1 specifically utilizes the SOT-143R footprint.

Replacement Considerations

Direct substitutes within the same family include BF2040E6814HTSA1 (SOT143) and BF2040WH6814 (SOT343). These alternatives offer identical electrical specifications but require PCB layout adjustments due to different pinouts and package dimensions. Verify mechanical fit and thermal resistance differences before implementation.