M3933/25-29N

Overview

The M3933/25-29N is a fixed RF attenuator manufactured by Amphenol SV Microwave, designed for military specification applications. It features SMA male-to-female connectors and operates within a frequency range up to 18 GHz. The component provides a nominal attenuation of 3 dB with a 50 Ohm impedance. It supports a power rating of 2 W and functions reliably between -65°C and +165°C. This non-screened inline module is part of the MIL-Spec connector series.

Feature Summary

• Military-grade construction compliant with MIL-Spec standards
• Fixed 3 dB attenuation for signal level control
• Wide operational temperature range suitable for harsh environments
• SMA gendered interface for direct cable integration

Applications

• RF test and measurement instrumentation
• Military communication systems
• Aerospace electronic circuits
• High-frequency signal conditioning

Procurement Notes

Verify the specific suffix 'N' denotes the non-screened variant when ordering. Confirm that the SMA male-to-female configuration matches the system interconnect requirements. Ensure the 18 GHz frequency limit and 2 W power handling are sufficient for the intended application environment before finalizing procurement.

Selection Notes

Select this model for applications requiring precise 3 dB attenuation in high-frequency RF paths. It is suitable where military reliability is mandated. Consider the non-screened design if shielding is provided externally or is unnecessary. Verify compatibility with existing SMA infrastructure regarding gender and impedance matching.

Part Context

This component belongs to the M3933 series of RF attenuators from Amphenol SV Microwave. The series includes various attenuation values and connector types tailored for defense and aerospace sectors. The M3933/25-29N specifically utilizes the SMA interface, distinguishing it from higher-frequency variants like the 2.92mm models in the same product line.

Replacement Considerations

Direct substitutes include other M3933/25-29N units from authorized distributors. Cross-referencing with generic SMA 3dB attenuators requires verification of MIL-Spec compliance and temperature ratings.