M3933/14-21S

Overview

The M3933/14-21S is a fixed RF attenuator manufactured by Cinch Connectivity Solutions Midwest Microwave. It provides an attenuation value of 12dB within a frequency range of 0 Hz to 12.4 GHz. The component features a 50 Ohm impedance and a power rating of 2W. It utilizes SMA connectors in an in-line module configuration. The device complies with MIL-DTL-M3933 standards and is designated for military-grade applications.

Feature Summary

• Complies with MIL-DTL-M3933 military specifications for reliability
• Provides precise 12dB signal attenuation across the specified bandwidth
• Designed for high-power handling with a 2W rating
• Utilizes robust SMA coaxial construction for stable performance

Applications

• Military communication systems requiring signal level control
• Test and measurement equipment calibration setups
• Radar system signal conditioning
• Avionics subsystems operating under strict environmental standards

Procurement Notes

Verify that the specific suffix 'S' denotes the screened variant as documented, ensuring compliance with required military screening levels. Confirm that the SMA connector gender matches the system interface requirements. Check for RoHS non-compliance status if environmental regulations apply to the final assembly. Ensure storage conditions align with the specified moisture sensitivity level to prevent damage prior to installation.

Selection Notes

Select this model when a fixed 12dB attenuation is required at frequencies up to 12.4 GHz. The 2W power rating suits applications needing moderate signal reduction without thermal issues. The SMA interface ensures compatibility with standard coaxial test gear. Consider the military qualification if the environment demands high reliability beyond commercial grades.

Part Context

This part belongs to the M3933 series of connectorized attenuators from Midwest Microwave. The series offers various attenuation values and frequency ranges tailored for defense and aerospace sectors. The M3933/14 sub-series specifically targets the 12.4 GHz frequency band. These components are designed to replace older MIL-A-3933 parts while maintaining form, fit, and function compatibility.

Replacement Considerations

M3933/14-21N serves as a direct functional substitute within the same series, differing primarily in manufacturing lot or screening variations rather than electrical performance.