M3933/25-27N

Overview

The M3933/25-27N is a radio frequency military specification connectorized attenuator manufactured by Amphenol / SV Microwave. It belongs to the SMA series and features a male-to-female interface configuration. The component operates within a frequency range up to 18 GHz with a nominal impedance of 50 ohms. It provides a maximum attenuation value of 1 dB. The unit is designed for bulk packaging and functions as a non-screened body type attenuator. Operational temperature limits span from -65 °C to +165 °C.

Feature Summary

• Military specification compliance for rugged RF applications
• SMA male to female connectorized attenuator design
• Non-screened construction for standard integration
• Wide operational temperature capability

Applications

• RF test and measurement equipment calibration
• Microwave signal path power reduction
• Defense and aerospace communication systems
• High-frequency circuit protection and level adjustment

Procurement Notes

Verify the specific part number suffix against official manufacturer documentation to confirm exact attenuation tolerance and physical dimensions. Ensure that the non-screened designation aligns with electromagnetic interference requirements for the target assembly. Cross-reference the MIL-spec designation with current industry standards to validate compatibility with existing fixture interfaces and mating hardware specifications.

Selection Notes

Select this component when a low-loss, fixed attenuation value is required in an SMA interface environment. The 1 dB attenuation rating suits applications needing minimal signal reduction while maintaining impedance matching. Consider the non-screened body type if external shielding is provided by the host enclosure. Verify that the 18 GHz upper frequency limit meets the system's spectral requirements without introducing excessive insertion loss or harmonic distortion.

Part Context

This model falls under the broader category of RF MIL Spec Connectors produced by Amphenol / SV Microwave. It is part of a family of connectorized attenuators utilizing standardized SMA interfaces. The product line supports various attenuation values and frequency ranges, catering to diverse microwave engineering needs. The M3933/25-27N specifically addresses low-attenuation requirements within the 18 GHz spectrum.

Replacement Considerations

Compatible substitutes include other M3933/25 series variants with matching SMA interfaces and similar attenuation characteristics. Verify electrical parameters such as VSWR and power handling capacity before substitution. Ensure mechanical compatibility regarding connector gender and thread specifications.