M3933/25-72S

Overview

The M3933/25-72S is a screened RF attenuator manufactured by Amphenol SV Microwave. It utilizes SMA connectors with male-to-female configuration and operates within a frequency range of DC to 18 GHz. The component provides a nominal attenuation value of 7 dB at a characteristic impedance of 50 Ohms. It supports a maximum power rating of 2 Watts and functions across an operating temperature range from -65 °C to +165 °C.

Feature Summary

• Screened construction for enhanced environmental protection
• SMA connector interface for reliable signal transmission
• Wide operational temperature capability for harsh conditions

Applications

• Military radio systems
• Avionics test equipment
• Radar signal processing chains

Procurement Notes

Verify the specific suffix 'S' indicates the screened variant, as non-screened equivalents exist within the same series. Confirm that the 7 dB attenuation value matches the system requirement, as other values are available in this family. Ensure compatibility with the 50 Ohm system impedance before integration into existing RF layouts.

Selection Notes

Select this model when a fixed 7 dB attenuation is required in high-frequency applications up to 18 GHz. The screened version offers superior shielding compared to non-screened alternatives. Consider the SMA interface constraints and ensure the 2W power handling meets the peak signal levels in the circuit design.

Part Context

This component belongs to the M3933 series of RF attenuators designed for military and aerospace standards. It represents a specialized inline module solution for precise signal level control. The series includes various attenuation values and connector types to support diverse defense communication architectures.

Replacement Considerations

M3933/25-72N is the non-screened parameter-equivalent alternative from the same manufacturer.