ATF-34143-BLKG

Overview

The ATF-34143-BLKG is a pseudomorphic high-electron-mobility transistor (pHEMT) manufactured by Broadcom Limited. It operates within the 450 MHz to 10 GHz frequency range and utilizes an SOT-343 surface-mount package with four leads. The device is characterized by a noise figure of 0.5 dB, associated gain of 17.5 dB, and output power of 20 dBm at 1 dB gain compression when tested at 4 V and 60 mA. Key electrical parameters include a gate-source voltage of -5 V, a maximum operating temperature of 160 °C, and a minimum of -65 °C. Physical dimensions are 2.25 mm in length, 1.35 mm in width, and 1 mm in height.

Feature Summary

• Low noise figure performance suitable for sensitive signal reception
• High dynamic range capability for linear amplification
• Compact surface-mount plastic packaging for automated assembly

Applications

• Low noise amplifier for cellular and PCS base stations
• LNA for WLAN, WLL/RLL, LEO, and MMDS systems
• General purpose discrete pHEMT for ultra-low noise applications

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm lot traceability and RoHS compliance status prior to integration. Ensure storage conditions meet specified humidity and temperature limits to prevent degradation of the semiconductor junction before soldering.

Selection Notes

Select this component for designs requiring minimal signal attenuation in the sub-10 GHz spectrum. Evaluate thermal management requirements given the small form factor. Compare against alternative pHEMTs if higher current handling or different package constraints are necessary for the specific circuit topology.

Part Context

This part belongs to the ATF series of low-noise transistors originally developed by Agilent Technologies and later transferred to Broadcom Limited. The BLKG suffix typically denotes a specific tape-and-reel packaging configuration for automated surface-mount processing. The device represents a legacy RF component widely used in wireless communication infrastructure.

Replacement Considerations

Direct substitutes include the ATF-34143-TR1 and ATF-34143-TR2G from Broadcom Limited, which share identical electrical specifications and pinouts. Verify package compatibility and reflow profile adherence when transitioning between reel variants.