ATF-35143-BLKG

Overview

The ATF-35143-BLKG is a pseudomorphic high-electron-mobility transistor (pHEMT) manufactured by Broadcom Limited. It is housed in a compact SOT-343 surface-mount package and operates as an N-channel device with a maximum drain-source voltage of 5.5 V. The component provides an associated gain of 18 dB and a noise figure of 0.4 dB at 2 GHz, making it suitable for low-noise amplification. It features a continuous drain current of 80 mA and a power dissipation rating of 300 mW, with a maximum operating temperature of +160°C.

Feature Summary

• Ultra-low noise figure performance optimized for sensitive RF signal reception
• High dynamic range capability supporting good intercept points
• Compact SOT-343 surface-mount plastic packaging for space-constrained designs

Applications

• Low noise amplifier stages for cellular and PCS handsets
• RF front-end modules for WLAN and WLL/RLL systems
• Low Earth Orbit (LEO) satellite communication receivers
• Multichannel Multipoint Distribution Service (MMDS) applications

Procurement Notes

Verify the specific suffix BLKG against official Broadcom documentation to confirm exact binning or testing criteria. Confirm RoHS compliance status through the manufacturer's latest datasheet. Ensure the component is sourced from authorized distributors to avoid counterfeit parts, especially given the component's age and potential obsolescence status.

Selection Notes

Select this pHEMT when designing circuits requiring minimal noise addition in the 450 MHz to 10 GHz range. Evaluate thermal management capabilities due to the 300 mW power dissipation limit in the small SOT-343 package. Compare against newer GaAs alternatives if higher power handling or different frequency characteristics are required for the target application.

Part Context

This component belongs to Broadcom's legacy portfolio of RF discrete transistors originally developed under Agilent Technologies. It was widely utilized in early-generation wireless infrastructure and mobile devices before being superseded by more integrated solutions. The ATF series established benchmarks for low-noise performance in microwave frequencies during its production era.

Replacement Considerations

Publicly confirmed direct substitute part numbers for the ATF-35143-BLKG variant are not available in verified sources. Engineers should consult Broadcom's official replacement guide or evaluate generic pHEMTs with matching SOT-343 packages and similar electrical parameters such as NF and Gain.