AT-42086-BLKG

Overview

The AT-42086-BLKG is a general-purpose NPN silicon bipolar transistor designed for high-frequency applications up to 6 GHz. It utilizes Avago’s 10 GHz fT self-aligned-transistor process with gold metalization and nitride passivation. The device features a surface-mount plastic package with a 4-micron emitter-to-emitter pitch and a 20-finger interdigitated geometry, facilitating impedance matching for low noise and medium power circuits. Key electrical specifications include a typical P1 dB of 20.5 dBm at 2.0 GHz, a typical gain of 13.5 dB at 1 dB compression, and a typical noise figure of 1.9 dB at 2.0 GHz.

Feature Summary

• High output power capability suitable for medium power applications
• Low noise figure optimized for low noise amplifier designs
• Surface mount plastic package with easy-to-match impedances

Applications

• Wireless systems as a Low Noise Amplifier (LNA)
• Gain stage implementation in RF circuits
• Buffer and oscillator applications
• Mixer functions in communication equipment

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging format. The BLKG suffix indicates bulk packaging containing 100 devices per unit. Confirm that tape-and-reel options are available if automated assembly is required. Ensure compatibility with lead-free manufacturing processes as indicated by the product description.

Selection Notes

Select this component for designs requiring a balance of medium power output and low noise performance in the sub-6 GHz range. The device is biased at VCE = 8V and IC = 35 mA for power/gain optimization or IC = 10 mA for noise optimization. Consider the thermal resistance of 140°C/W and derating requirements when designing the PCB layout for adequate heat dissipation.

Part Context

This part belongs to the AT-42086 series of silicon bipolar transistors fabricated using a self-aligned-transistor process. The series includes variants such as the AT-42086-TR1G and AT-42086-TR2G, which differ primarily in packaging quantity and reel size compared to the bulk BLKG variant.

Replacement Considerations

Consult official manufacturer substitution guides for direct replacements. Verify pinout compatibility and electrical parameter overlap before considering alternative components from other manufacturers.