AT0904CT-0100JN-91TR

Attenuators Overview

The AT0904CT-0100JN-91TR is a surface-mount RF attenuator manufactured by Vishay / Barry Industries. It provides a nominal attenuation of 1 dB with a tolerance of ±5%. The device operates within a frequency range of DC to 18 GHz and supports a power rating of 0.1 W (100 mW). It utilizes an aluminum oxide (Al2O3) substrate and features a wraparound construction for stability. The component is available in a 4-SMD, no-lead package and complies with RoHS standards.

Attenuators Feature Summary

• Wraparound chip design for stable performance across the specified frequency band
• Utilizes aluminum oxide substrate for thermal and electrical reliability
• Surface-mount technology compatible for automated assembly

Attenuators Applications

• RF signal conditioning in microwave circuits
• Attenuation stages in test and measurement equipment
• Signal level adjustment in wireless communication systems

Attenuators Procurement Notes

Verify the specific suffix '91TR' corresponds to the required tape-and-reel packaging configuration when ordering. Confirm that the 0.1 W power rating and 18 GHz frequency limit align with the system's operational requirements. Ensure compatibility with standard SMT reflow profiles for the 4-SMD no-lead package. Cross-reference the manufacturer part number with official Vishay documentation to confirm current production status and RoHS compliance details.

Attenuators Selection Notes

Select this component when a low attenuation value of 1 dB is required at high frequencies up to 18 GHz. Consider the 0.1 W power handling capability against the expected signal levels in the circuit. The wraparound construction offers advantages in parasitic inductance reduction compared to standard chip resistors. Evaluate the 4-SMD footprint constraints against the PCB layout requirements. Compare against higher power variants if thermal management is a critical concern.

Attenuators Part Context

This part belongs to the AT0904 series of thin-film chip attenuators from Vishay / Barry Industries. The series is characterized by its wraparound electrode structure, which enhances high-frequency performance and stability. These components are designed for applications requiring precise attenuation values in compact surface-mount formats. The AT0904 series typically covers various attenuation values and power ratings within the same physical footprint family.

Attenuators Replacement Considerations

Direct substitutes include other Vishay AT0904 series parts with matching attenuation and power ratings, such as the AT0904AS-0100JN-91TR. Verify that any replacement maintains the same 1 dB nominal value, 5% tolerance, and 18 GHz frequency response. Ensure the substitute component matches the 4-SMD no-lead package dimensions for mechanical compatibility.