M3933/14-12S

Overview

The M3933/14-12S is a screened QPL RF attenuator manufactured by Cinch Connectivity Solutions Midwest Microwave. It features SMA connectors and provides a nominal attenuation of 9 dB. The device operates within a frequency range of 0 Hz to 12.4 GHz with a 50 Ohm impedance. It has a power rating of 2 W and functions between -55°C and +125°C.

Feature Summary

• Screened Qualified Products List (QPL) compliance for military reliability
• SMA connector interface for in-line module integration
• Wide temperature operational capability from -55°C to +125°C

Applications

• Military radio systems requiring precise signal attenuation
• Aviation communication equipment operating under strict environmental standards
• Defense radar systems needing reliable RF signal control

Procurement Notes

Verify the specific suffix 'S' indicates screened QPL status, distinct from standard commercial variants. Confirm MIL-DTL-M3933 compliance requirements match system specifications. Ensure SMA connector gender matches circuit design needs. Check for RoHS exemption status as these are typically non-compliant due to military construction.

Selection Notes

Select this model when 9 dB attenuation is required at 12.4 GHz maximum frequency. Consider the 2 W power handling limit for high-power applications. Verify that the screened QPL certification is mandatory for the intended defense or aerospace program. Compare against other M3933/14 series values if different attenuation levels are needed.

Part Context

This component belongs to the M3933/14 series of coaxial attenuators. It shares the same form factor and electrical baseline as other models in the family, differing primarily in attenuation value and screening status. The series is designed for ruggedized environments typical of military and aerospace electronics.

Replacement Considerations

M3933/14-12N is a direct functional substitute with identical electrical performance but without the screened QPL designation. Other M3933/14 series attenuators may replace this unit if the 9 dB attenuation value is acceptable for the application.