R411803121

Overview

The R411803121 is a fixed RF attenuator manufactured by Radiall USA, Inc. It features an SMA connector interface with a straight inline module design. The component operates within a frequency range of DC to 18 GHz and maintains a characteristic impedance of 50 Ohms. It provides a nominal attenuation value of 3 dB. The device supports an average power handling capacity of 2 Watts at 25°C. The housing is constructed from passivated stainless steel.

Feature Summary

• Straight inline module configuration for direct circuit integration
• Passivated stainless steel body construction for durability
• SMA connector interface supporting high-frequency signal processing

Applications

• RF signal level adjustment in communication systems
• Test and measurement equipment calibration
• Microwave circuit protection and power management

Procurement Notes

Verify the specific datasheet version and RoHS compliance status prior to procurement. Confirm that the SMA male-to-female orientation matches the system requirements. Ensure the operating environment temperature remains within the specified limits to maintain the 2W power rating. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and traceability.

Selection Notes

Select this component when a precise 3 dB attenuation is required within the 18 GHz bandwidth. The 50 Ohm impedance must align with the surrounding transmission line characteristics. Consider the 2W average power limit against peak signal levels. The straight inline form factor dictates the physical layout constraints within the assembly.

Part Context

This part belongs to the Radiall R4118xx121 series of SMA attenuators. The series utilizes a standardized passivated stainless steel body design. These components are engineered for consistent performance across microwave frequencies. The specific model denotes the 3 dB attenuation variant within this product family.

Replacement Considerations

Compatible substitutes include other models from the R4118xx121 series with different attenuation values. Verify that any replacement maintains the same SMA interface and 50 Ohm impedance. Ensure the substitute component meets or exceeds the 18 GHz frequency range and 2W power handling specifications.