M3933/25-46S

Overview

The M3933/25-46S is a fixed RF attenuator manufactured by Cinch Connectivity Solutions under the Midwest Microwave brand. It provides a nominal attenuation of 20 dB with a maximum frequency range extending to 12.4 GHz. The device operates within a DC to 12.4 GHz bandwidth and features SMA connectors in an inline module configuration. It supports a power rating of 2 W and functions reliably across a temperature range of -55°C to +125°C. This component complies with MIL-DTL-M3933 standards.

Feature Summary

• Complies with MIL-DTL-M3933 military specifications for qualified products list (QPL) components
• Provides precise 20 dB signal attenuation suitable for high-frequency applications
• Features robust SMA connectorized design for reliable interconnect stability

Applications

• Military communication systems requiring standardized RF signal control
• Aerospace test and measurement equipment operating at microwave frequencies
• Defense radar subsystems needing fixed attenuation modules

Procurement Notes

Verify that the specific part number matches the required 20 dB attenuation value and SMA interface type. Confirm compliance with MIL-DTL-M3933 standards if QPL status is mandatory for the application. Ensure environmental ratings meet the operational temperature requirements of -55°C to +125°C. Check for any specific screening or testing documentation required by the end-user specification before finalizing procurement.

Selection Notes

Select this model when a fixed 20 dB attenuation is required within a 12.4 GHz frequency range. The SMA connector type dictates compatibility with existing system interfaces. Consider the 2 W power handling capability against expected signal levels. The wide temperature range makes it suitable for harsh environments where standard commercial components might fail. Verify impedance matching requirements align with the standard 50 Ohm system design.

Part Context

This component belongs to the M3933/25 series, which encompasses various fixed attenuator values. The series is characterized by its adherence to military standards and use of SMA connectors. Other variants in this family offer different attenuation levels while maintaining similar form factors and electrical characteristics up to 12.4 GHz.

Replacement Considerations

Direct substitutes include other M3933/25 series parts with identical 20 dB attenuation and SMA interfaces. Cross-reference with equivalent MIL-DTL-M3933 compliant components from other authorized manufacturers to ensure functional interchangeability regarding frequency range and power handling.