M3933/14-14S

Overview

The M3933/14-14S is a fixed RF attenuator module manufactured by Cinch Connectivity Solutions under the Midwest Microwave brand. It provides a nominal attenuation of 40 dB with a 50 Ohm impedance. The device operates within a frequency range of 0 Hz to 12.4 GHz and supports a maximum power rating of 2 W. It utilizes SMA connectors in an inline configuration. The unit is qualified to MIL-DTL-M3933 standards, ensuring compliance with military specifications for reliability and performance in demanding environments.

Feature Summary

• MIL-DTL-M3933 qualified construction for military-grade reliability
• Fixed 40 dB attenuation value for precise signal reduction
• SMA connector interface supporting frequencies up to 12.4 GHz
• Inline module design facilitating direct circuit integration

Applications

• Military communication systems requiring signal level control
• Test and measurement equipment calibration setups
• Aerospace electronic subsystems
• Defense radar and navigation system interfacing

Procurement Notes

Verify that the specific order matches the M3933/14-14S designation to ensure correct 40 dB attenuation and SMA interface. Confirm MIL-DTL-M3933 qualification status is required for the application. Check RoHS non-compliance status if environmental regulations apply. Ensure the 2 W power rating and 12.4 GHz frequency limit align with system requirements before finalizing procurement.

Selection Notes

Select this component when a high-attenuation fixed value is needed for SMA-based RF paths. The 40 dB rating distinguishes it from lower attenuation variants in the M3933 series. Consider the 12.4 GHz upper frequency limit against higher-frequency alternatives like the M3933/16 series if operation above 12.4 GHz is anticipated. Verify male/female connector orientation needs for system integration.

Part Context

This part belongs to the M3933/14 family of fixed attenuators, characterized by 40 dB attenuation values. It shares the same form factor and qualification standards as other models in the series, such as the M3933/14-11S (8 dB) and M3933/14-12N. The 'S' suffix typically denotes screened or specific connector configurations within the Midwest Microwave product line, adhering to strict military manufacturing controls.

Replacement Considerations

Direct substitutes include other M3933/14 series parts with identical 40 dB attenuation, such as M3933/14-14N, provided connector gender compatibility is verified. Cross-series replacement with M3933/16 models is not recommended due to differing frequency ranges (18 GHz vs 12.4 GHz). Always validate mechanical dimensions and connector polarity before substituting.