ATF-38143-TR1G

Overview

The ATF-38143-TR1G is a GaAs pHEMT RF transistor manufactured by Broadcom Limited. It operates at frequencies up to 2 GHz with a gain of 16 dB and a noise figure of 0.4 dB. The device is rated for a maximum drain-source voltage of 4.5 V and draws 10 mA at the test point, with a continuous drain current of 145 mA. Packaged in an SOT-343 (SC-82A) surface-mount housing, this component is designated as obsolete.

Feature Summary

• Utilizes GaAs pHEMT technology for low-noise performance
• Designed for high-gain amplification applications
• Compact SMD packaging suitable for space-constrained designs

Applications

• Low noise amplifier stages in wireless communication systems
• RF signal processing circuits operating below 2 GHz
• Portable electronic devices requiring compact RF components

Procurement Notes

This component is officially classified as obsolete by the manufacturer. Verification of authenticity is critical when sourcing from secondary markets due to potential availability of counterfeit or refurbished units. Buyers must confirm the specific manufacturing date code and physical condition against original datasheet specifications before integration into new production lines.

Selection Notes

Engineers should evaluate alternative active devices from the same family or newer generations that offer equivalent electrical parameters such as noise figure and gain. Compatibility checks regarding pinout configuration and thermal dissipation requirements are necessary when transitioning from this obsolete part to ensure circuit stability and performance consistency.

Part Context

The ATF-38143-TR1G belongs to Broadcom's portfolio of GaAs pHEMT transistors designed for radio frequency applications. These components are engineered to provide high linearity and low noise characteristics essential for modern wireless infrastructure. The specific model integrates these features into a small outline package to facilitate automated assembly processes.

Replacement Considerations

Direct substitutes include ATF-35143-TR1G and ATF-34143-TR2G. These alternatives share similar packaging and operational principles but may exhibit variations in gain, power handling, and biasing requirements that necessitate schematic review.