M3933/25-74S

Overview

The M3933/25-74S is a screened SMA male-to-female fixed attenuator manufactured by Amphenol SV Microwave. It operates within a frequency range of DC to 18 GHz and maintains a characteristic impedance of 50 Ohms. The component provides an attenuation value of 8 dB with a maximum power rating of 2 Watts. Designed for military specifications, it supports operating temperatures from -65°C to +165°C. The unit utilizes a bulk packaging format and features a single-row module construction.

Feature Summary

• Screened construction for enhanced electromagnetic interference protection
• Military specification compliance ensuring reliability in harsh environments
• Wide temperature operational capability up to +165°C

Applications

• RF signal conditioning in military communication systems
• Test and measurement equipment requiring precise attenuation
• Aerospace electronic assemblies

Procurement Notes

Verify the specific suffix 'S' indicates the screened variant when sourcing replacements. Confirm that the required attenuation tolerance and power handling meet system design constraints. Ensure compatibility with existing SMA connector interfaces. Check for updated datasheet revisions regarding material composition or environmental testing standards before finalizing procurement orders.

Selection Notes

Select this model when an 8 dB fixed attenuation is required at frequencies up to 18 GHz. The screened version is preferred over non-screened variants (suffix 'N') for applications demanding superior shielding performance. Ensure the 2W power rating aligns with the maximum signal levels present in the circuit path to prevent component damage.

Part Context

This component belongs to the M3933 series of RF attenuators produced by Amphenol SV Microwave. The series offers various attenuation values and connector configurations tailored for high-frequency applications. The M3933/25-74S specifically addresses needs for screened, high-reliability attenuation in the 18 GHz bandwidth.

Replacement Considerations

• M3933/25-74N

FAQ

What is the difference between the M3933/25-74S and M3933/25-74N?

The 'S' suffix denotes a screened attenuator, providing additional shielding against electromagnetic interference, whereas the 'N' suffix indicates a non-screened version.

What is the maximum operating temperature for this attenuator?

The M3933/25-74S is rated for operation up to +165°C.