M3933/30-03S

Overview

The M3933/30-03S is a fixed RF attenuator manufactured by Amphenol SV Microwave, designed for high-frequency signal processing applications. It features a 2.92mm female-to-male connector configuration, providing a stable interface for coaxial systems. The component operates within a frequency range of 0 Hz to 32 GHz and offers a precise attenuation value of 1 dB. It supports a maximum power rating of 2 W and maintains a characteristic impedance of 50 Ohms. The unit is constructed with stainless steel housing, ensuring durability in demanding environments. Operating temperatures range from -65°C to +165°C, and the device is RoHS3 compliant.

Feature Summary

• Provides precise 1 dB signal attenuation in a compact inline module format
• Features 2.92mm gendered connectors for secure mating and low VSWR performance
• Constructed with stainless steel housing for mechanical robustness and shielding

Applications

• High-frequency test and measurement instrumentation
• Microwave communication system signal conditioning
• Defense and aerospace radar subsystems requiring screened components

Procurement Notes

Verify that the specific suffix 'S' denotes the screened variant required for your application, as this affects environmental sealing and certification levels compared to non-screened versions. Confirm that the 2.92mm connector polarity matches your existing fixture interfaces to ensure proper male-female mating. Check for RoHS3 compliance requirements if operating in regulated jurisdictions. Ensure the 2W power handling capacity aligns with your system's peak power levels to prevent thermal damage during operation.

Selection Notes

Select this model when a low attenuation value of 1 dB is specifically needed at frequencies up to 32 GHz. The 2.92mm interface offers higher bandwidth than standard SMA counterparts, making it suitable for advanced microwave designs. Consider the screened construction if EMI protection or military specification compliance is mandatory. Verify that the 50 Ohm impedance matches your transmission line characteristics to minimize signal reflection and maintain system integrity across the operational bandwidth.

Part Context

This component belongs to the M3933 series of connectorized attenuators from Amphenol SV Microwave. The series includes various attenuation values and connector configurations tailored for RF and microwave applications. The M3933/30-03S specifically utilizes the 2.92mm (K-type) connector geometry, which extends the usable frequency range beyond standard SMA limits while maintaining compatibility with common laboratory and industrial equipment interfaces.

Replacement Considerations

M3933/30-03N is listed as a parameter-equivalent substitute from the same manufacturer. R413301000 from Radiall USA, Inc. is also identified as a parameter-equivalent alternative. Verify connector gender and attenuation tolerance specifications before substituting to ensure functional compatibility.