113990030

Overview

The Seeed Technology Co., Ltd. part number 113990030 is an RF attenuator designed for signal management in radio frequency circuits. It features a fixed attenuation value of 30dB with a tolerance of ±1.0dB. The component operates within a frequency range of 0 Hz to 3 GHz and maintains a characteristic impedance of 50 ohms. It is housed in an SMA In-Line Module package, facilitating direct integration into coaxial transmission lines.

Feature Summary

• Provides fixed 30dB signal attenuation for RF applications
• Operates across a broad frequency spectrum from DC to 3 GHz
• Maintains 50-ohm impedance matching for standard RF systems
• Utilizes SMA connector interface for inline module installation

Applications

• RF signal level reduction in test and measurement equipment
• Impedance matching networks in wireless communication systems
• Signal conditioning in general purpose RF circuitry

Procurement Notes

Verify the specific SMA connector gender and pin configuration against your system requirements before procurement. Confirm that the 30dB attenuation value aligns with your signal chain design needs. Ensure the 50-ohm impedance matches your existing RF infrastructure to prevent reflection issues. Check for any environmental ratings if the application involves extreme temperatures or humidity.

Selection Notes

Select this component when a precise 30dB reduction is required within the 0 Hz to 3 GHz bandwidth. Consider the SMA inline form factor for ease of integration into existing coaxial setups. Evaluate the ±1.0dB tolerance to ensure it meets the precision requirements of your specific RF application. Compare with other attenuators if variable attenuation or different impedance values are needed.

Part Context

This component belongs to the category of RF attenuators manufactured by Seeed Technology Co., Ltd. It is distinct from their Grove modules and IoT gateways, focusing specifically on passive RF signal control. The part serves as a fundamental building block for managing signal strength in electronic designs requiring precise attenuation without active power sources.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should consult manufacturer catalogs for compatible SMA attenuators with similar 30dB attenuation and 50-ohm impedance specifications.