BFP420E6327

Overview

The BFP420E6327 is an NPN silicon RF bipolar transistor from Infineon Technologies, designed for high-frequency applications. It operates with a transition frequency of 25 GHz and supports a maximum collector-emitter voltage (VCEO) of 4.5 V. The device features a minimum DC current gain (hFE) of 60 and handles a continuous collector current of 35 mA. It is housed in a compact SOT-343-4 surface-mount package and meets AEC-Q100 automotive qualification standards. Operating temperatures range from -65°C to +150°C.

Feature Summary

• High-frequency performance optimized for broadband amplification up to 25 GHz
• Automotive-grade reliability certified under AEC-Q100 standards
• Compact SMD footprint suitable for space-constrained miniature probe designs

Applications

• Broadband low-noise amplifier circuits for EMI test probes
• RF receiver front-end stages requiring minimal noise figure
• Impedance matching networks in high-frequency signal processing

Procurement Notes

Verify the specific suffix against official documentation, as variations may exist within the BFP420 series. Confirm end-of-life status and lead times directly with authorized distributors, as availability fluctuates. Ensure the selected variant matches the required AEC-Q100 qualification if used in automotive contexts. Cross-reference datasheet revisions to confirm pinout consistency before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring a 25 GHz transition frequency and low noise figures below 1.5 dB. The SOT-343-4 package is ideal for miniaturized PCB layouts where space is limited. Ensure the design accommodates the 4.5 V maximum voltage rating and 35 mA current limit. Verify thermal management capabilities given the wide operating temperature range up to 150°C.

Part Context

This part belongs to the BFP420 family of silicon RF transistors manufactured by Infineon Technologies. These devices are widely utilized in radio frequency applications due to their high linearity and low noise characteristics. The series includes various packaging options and suffixes tailored for different volume and qualification requirements.

Replacement Considerations

Consult official substitution guides for compatible NPN RF transistors with similar 25 GHz fT ratings. Verify that any alternative maintains the same SOT-343-4 footprint and electrical parameters to ensure circuit compatibility without redesign.