M3933/25-88N

Overview

The M3933/25-88N is a radio frequency military specification attenuator manufactured by Amphenol SV Microwave. It features SMA male to female connectors with a 50 Ohm impedance and operates up to 18 GHz. The component provides a fixed attenuation of 20 dB. It is designed for non-screened applications and functions within a temperature range of -65°C to +165°C.

Feature Summary

• Fixed 20 dB attenuation in an SMA connectorized form factor
• Military specification construction for rugged environments
• Wide operational temperature capability up to +165°C

Applications

• RF signal level reduction in military communication systems
• Test and measurement equipment requiring precise attenuation
• Aerospace electronic subsystems

Procurement Notes

Verify the specific part number suffix against official manufacturer documentation to confirm screening status and exact electrical tolerances. Ensure that the required attenuation value matches the application design specifications before procurement. Confirm compatibility with existing SMA connector interfaces and verify that the operating temperature range meets the environmental requirements of the intended deployment scenario.

Selection Notes

Select this component when a fixed 20 dB attenuation is required at frequencies up to 18 GHz. Consider the non-screened construction if shielding is provided by the system enclosure. Evaluate the thermal performance limits relative to the maximum ambient temperature of the installation environment to ensure reliable operation within the specified -65°C to +165°C range.

Part Context

This model belongs to the M3933 series of RF attenuators, which are standardized under military specifications. The series offers various attenuation values using SMA connectors. The M3933/25-88N specifically denotes the 20 dB variant within this family, distinguishing it from other models based on its fixed loss characteristics and connector gender configuration.

Replacement Considerations

Compatible substitutes include M3933/25-88S for screened versions or other M3933 series variants with matching 20 dB attenuation and SMA interface. Verify that alternative parts meet the same 18 GHz frequency limit and temperature ratings.