M3933/25-77N

Overview

The M3933/25-77N is a fixed RF attenuator manufactured by Cinch Connectivity Solutions under the Midwest Microwave brand. It features SMA connectors and provides a nominal attenuation of 9.5 dB. The device operates within a frequency range of 0 Hz to 18 GHz with a 50 Ohm impedance. It has a power rating of 2 Watts and utilizes an in-line module package configuration.

Feature Summary

• Provides precise signal attenuation for RF systems
• Supports high-frequency operation up to 18 GHz
• Features robust SMA connector interface

Applications

• Military communication systems
• Aerospace instrumentation
• Test and measurement equipment

Procurement Notes

Verify that the specific suffix 'N' aligns with project requirements, as it may indicate non-RoHS compliance or specific material constraints compared to other variants. Confirm that the 9.5 dB attenuation value matches the circuit design needs. Ensure the SMA in-line form factor fits the physical layout constraints of the assembly.

Selection Notes

Select this component when a fixed 9.5 dB loss is required in the 0-18 GHz band. Consider the 2W power handling capability for signal levels. Evaluate the SMA interface compatibility with existing cabling. Compare against other M3933/25 series values if different attenuation is needed.

Part Context

This part belongs to the M3933/25 series of connectorized attenuators from Midwest Microwave. These components are designed for harsh environments and often support Qualified Products List (QPL) standards for defense applications. The series offers various attenuation values while maintaining consistent SMA connectivity and performance specifications across the family.

Replacement Considerations

M3933/25-75N is a documented substitute offering 8.5 dB attenuation. M3933/25-30S offers 4 dB attenuation. Verify that the difference in attenuation values does not impact system performance before substitution.