M3933/25-87N

Overview

The M3933/25-87N is a radio frequency military specification attenuator manufactured by Amphenol SV Microwave. It features SMA male to female connectors and operates within a frequency range up to 18 GHz. The component provides a fixed attenuation of 19 dB at a characteristic impedance of 50 Ohms. Designed for rugged environments, it supports a maximum operating temperature of +165°C and a minimum of -65°C. The unit is classified as nonscreened and utilizes bulk packaging.

Feature Summary

• Provides fixed signal attenuation in RF systems
• Compatible with standard SMA connector interfaces
• Rated for high-temperature military applications

Applications

• RF test and measurement equipment
• Military communication systems
• Signal conditioning in radar assemblies

Procurement Notes

Verify the specific suffix 'N' confirms the nonscreened configuration against official Amphenol documentation. Ensure that the 19 dB attenuation value matches the required circuit design specifications. Confirm that the SMA gender combination aligns with system interconnect requirements. Validate that the nonscreened variant meets the electromagnetic interference constraints of the intended application environment.

Selection Notes

Select this model when a precise 19 dB reduction is required for SMA-based RF paths. Consider the nonscreened construction if shielding is provided externally or is unnecessary. Evaluate the thermal limits to ensure operation remains within the specified -65°C to +165°C range. Compare against screened variants if internal shielding is mandated by system architecture.

Part Context

This component belongs to the M3933 series of RF attenuators from Amphenol SV Microwave. The series offers various attenuation values and connector types tailored for defense and aerospace sectors. The M3933/25-87N specifically addresses needs for moderate signal reduction using widely available SMA interfaces.

Replacement Considerations

M3933/25-12S serves as a screened alternative with different attenuation. M3933/25-31N offers a nonscreened option with 5 dB attenuation. Verify interface compatibility and attenuation tolerance before substituting.