M3933/25-30S

Overview

The M3933/25-30S is a screened QPL fixed attenuator manufactured by Cinch Connectivity Solutions Midwest Microwave. It features SMA connectors and provides a maximum attenuation of 4 dB with a tolerance of ±0.3 dB. The device operates within a frequency range of 0 Hz to 12.4 GHz and supports a power rating of 2 W. It functions as an in-line module with male/female interface types, designed for reliable signal reduction in RF applications.

Feature Summary

• Screened Qualified Products List (QPL) compliance for military-grade reliability
• SMA connector interface for standardized RF integration
• Fixed 4 dB attenuation with precise ±0.3 dB tolerance
• In-line module design for direct circuit insertion

Applications

• Military communication systems requiring screened components
• Aerospace RF signal conditioning circuits
• Test and measurement equipment calibration
• Harsh environment electronic assemblies

Procurement Notes

Verify the specific screening level and QPL certification status directly with the manufacturer or authorized distributors before procurement. Confirm that the SMA connector gender configuration matches the system requirements. Ensure environmental specifications align with operational temperature ranges. Request official datasheets and material compliance documentation to validate suitability for defense or aerospace applications.

Selection Notes

Select this component when a fixed 4 dB attenuation is required within the DC to 12.4 GHz bandwidth. Consider the 2 W power handling capability for high-power RF paths. The SMA interface dictates mating connector compatibility. Verify that the screened QPL designation meets specific program quality assurance mandates. Evaluate physical form factor constraints for in-line module installation.

Part Context

This part belongs to the M3933/25 series of connectorized attenuators from Cinch Connectivity Solutions. The series offers various attenuation values across different frequency bands. The M3933/25-30S specifically addresses the 4 dB requirement at 12.4 GHz. It represents a standardized solution for RF signal management in critical infrastructure.

Replacement Considerations

M3933/25-30N is a potential substitute variant differing primarily in connector plating or finish specifications. Verify electrical performance equivalence and physical dimensions before substitution. Ensure the alternative maintains the same QPL screening status if required by the application.