AT-41511-TR2G

Overview

The AT-41511-TR2G is a general-purpose NPN silicon bipolar transistor manufactured by Broadcom Limited. It utilizes the SOT-143 surface-mount package and is fabricated using a 10 GHz self-aligned-transistor process. The device is optimized for low-noise applications, offering a typical noise figure of 1.0 dB at 900 MHz with an associated gain of 15.5 dB under standard bias conditions (VCE = 5 V, IC = 5 mA). It supports operation across 3, 5, and 8 volt supplies and features a collector current rating of 50 mA and power dissipation of 225 mW.

Feature Summary

• Low noise figure performance suitable for wireless system front-end applications
• High-frequency capability utilizing a 10 GHz self-aligned-transistor process
• Optimized impedance matching near 50 ohms at 900 MHz
• Compatible with high-volume surface mount assembly techniques

Applications

• Wireless systems as a Low Noise Amplifier (LNA)
• RF gain stages and buffer circuits
• Oscillators and active mixers

Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm that the specific ordering suffix matches the required tape-and-reel packaging quantity. Ensure compliance with RoHS standards and check for any obsolescence notices regarding this specific part number before finalizing procurement plans.

Selection Notes

Select the AT-41511-TR2G when a four-lead SOT-143 package is required to minimize parasitic effects compared to the three-lead alternative. Consider the device's performance characteristics at lower bias currents if power consumption is a critical constraint in the design. Verify thermal management requirements against the specified maximum junction temperature limits.

Part Context

This component belongs to the Avago Technologies AT-415xx series of general-purpose NPN bipolar transistors. It shares the same internal die structure as the AT-41533 but utilizes the SOT-143 package instead of the SOT-23. Both devices are designed for economical high-frequency performance in consumer and industrial electronics.

Replacement Considerations

The AT-41533 serves as a functional equivalent within the same family, differing primarily in its SOT-23 package configuration. Designers must account for pinout variations and potential differences in parasitic capacitance when substituting between these two package types.