M3933/25-20S

Overview

The M3933/25-20S is a fixed RF attenuator manufactured by Amphenol SV Microwave, designed for high-frequency applications up to 18 GHz. It features SMA male-to-female connectors and maintains a nominal impedance of 50 ohms. The component provides a precise attenuation value of 20 dB. It is rated for a maximum power handling capacity of 2 watts and operates within a temperature range of -65°C to +165°C. The unit is packaged in bulk.

Feature Summary

• Provides fixed 20 dB attenuation for signal level control
• Supports frequency operation up to 18 GHz with SMA interfaces
• Constructed for military specification reliability and durability

Applications

• RF test and measurement equipment calibration
• Military communication systems signal conditioning
• Aerospace radar system attenuation networks

Procurement Notes

Verify the specific datasheet version and screening requirements (screened vs. non-screened) as indicated in official documentation. Confirm that the SMA connector gender configuration matches the circuit design. Ensure environmental specifications meet the operational temperature extremes required for the intended deployment environment before finalizing procurement.

Selection Notes

Select this component when a fixed 20 dB reduction is required in an 18 GHz SMA-based system. Consider the 2-watt power rating to ensure it exceeds the maximum expected signal power. Verify compatibility with MIL-spec standards if used in defense or aerospace contexts. Compare against other attenuation values in the M3933/25 series if different signal levels are needed.

Part Context

This part belongs to the M3933 family of RF attenuators from Amphenol SV Microwave. The series includes various models with different attenuation values and connector types, such as 2.92mm variants. The M3933/25-20S specifically utilizes the SMA interface, distinguishing it from higher-frequency counterparts like the M3933/30 series which use 2.92mm connectors.

Replacement Considerations

M3933/25-XXS represents the generic screened series designation. Specific substitutes depend on exact attenuation tolerance and screening status. No direct cross-manufacturer equivalents are confirmed in public data.