AT-41486-TR1G

Overview

The AT-41486 is a general-purpose NPN silicon bipolar transistor designed for high-frequency applications up to 6 GHz. Fabricated using a self-aligned-transistor process, it features a low-cost surface-mount plastic package with a 0.085-inch diameter and a 4-micron emitter-to-emitter pitch. The device utilizes a 14-finger interdigitated geometry to provide impedances suitable for low noise and moderate power operations. Key electrical specifications include a typical gain-bandwidth product of 8.0 GHz, an insertion power gain of 17.5 dB at 1.0 GHz, and a typical noise figure of 1.4 dB at 1.0 GHz.

Feature Summary

• Low noise figure performance optimized for wireless systems
• High associated gain and gain-bandwidth product
• Surface mount plastic package with lead-free option available

Applications

• Wireless system low noise amplifiers (LNA)
• Gain stages
• Buffer amplifiers
• Oscillators
• Mixers

Procurement Notes

Verify the specific ordering suffix when purchasing. The 'G' suffix indicates a lead-free component option. Confirm the reel size required for production, as the part is available in bulk or on 7-inch and 13-inch reels. Ensure compatibility with standard surface mount assembly processes given the small plastic package dimensions.

Selection Notes

Select this component for designs requiring intermediate-sized transistors with easy-to-match impedances. It is suitable for applications needing low noise near 50 ohms at 900 MHz. Consider the thermal resistance and derating requirements if operating above 25°C ambient temperature. Verify that the collector current and voltage ratings align with the circuit's maximum operational limits.

Part Context

This component belongs to the family of Avago Technologies silicon bipolar transistors utilizing the SAT process. It is distinguished by its specific 14-finger interdigitated geometry and 0.085-inch plastic package. The datasheet provides detailed S-parameter tables and noise parameters for design simulation across the frequency range.

Replacement Considerations

Consult the manufacturer's documentation for confirmed substitute part numbers. Cross-referencing should focus on matching the gain-bandwidth product, noise figure, and package type to ensure functional equivalence in existing designs.

FAQ

What is the typical gain-bandwidth product of the AT-41486?

The typical gain-bandwidth product (fT) is 8.0 GHz.

How does the 'G' suffix affect the part number?

The 'G' suffix indicates that the component is available in a lead-free option.

What is the typical noise figure at 1.0 GHz?

The typical optimum noise figure at 1.0 GHz is 1.4 dB.