AT0904CT-1000JN-91TR

Attenuators Overview

The AT0904CT-1000JN-91TR is a surface-mount RF attenuator manufactured by Vishay Barry Industries. It provides a fixed attenuation of 10 dB with a tolerance of ±5%. The device operates over a frequency range from DC to 18 GHz and handles a maximum power rating of 100 mW (0.1 W). It utilizes an aluminum oxide substrate and features a wraparound construction with platinum/gold terminations. The component is housed in a compact 0904 package, specifically a 4-SMD, no-lead configuration, designed for high-reliability applications requiring stable performance across a broad microwave spectrum.

Attenuators Feature Summary

• Provides stable attenuation performance from DC up to 18 GHz
• Utilizes aluminum oxide substrate for thermal stability
• Features wraparound electrode construction for reliability
• Designed for surface-mount assembly in compact footprints

Attenuators Applications

• Microwave signal conditioning circuits
• RF test and measurement equipment
• Wireless communication systems
• Satellite communication payloads

Attenuators Procurement Notes

Verify the specific suffix 'CT' against the official Vishay datasheet to confirm the exact termination style and material composition, as variations exist within the AT0904 family. Ensure the ordering code matches the required 10 dB value and 5% tolerance. Confirm RoHS compliance status if restricted substances are a constraint for your assembly process. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Attenuators Selection Notes

Select this component when a fixed 10 dB attenuation is required at frequencies extending to 18 GHz. The 100 mW power rating limits its use to low-power signal paths rather than high-power transmission lines. The 0904 footprint requires careful PCB layout consideration due to its small size. Compare insertion loss and VSWR specifications in the datasheet against system requirements to ensure signal integrity is maintained within acceptable limits for the application.

Attenuators Part Context

This part belongs to the Vishay AT0904 series of chip attenuators, which are known for their robustness in harsh environments. The series offers various attenuation values and power ratings. The AT0904CT variant specifically denotes the case style and termination type. These components are widely used in military and aerospace applications due to their hermetic seal options and high reliability standards inherent to the Vishay Barry product line.

Attenuators Replacement Considerations

Direct replacements must match the 10 dB attenuation, 18 GHz frequency limit, and 0904 package dimensions. Verify that substitute parts offer comparable VSWR and insertion loss characteristics. Check if alternative manufacturers provide equivalent aluminum oxide substrates and similar power handling capabilities to ensure functional parity without redesigning the surrounding circuitry.