M3933/25-77N

Overview

The M3933/25-77N is a coaxial RF attenuator manufactured by Amphenol SV Microwave. It utilizes SMA connectors and operates within a frequency range of DC to 18 GHz. The component provides a nominal attenuation value of 9.5 dB at a characteristic impedance of 50 Ohms. It supports a maximum power rating of 2 Watts and functions reliably across an operating temperature range from -65 °C to +165 °C.

Feature Summary

• Provides precise signal attenuation for high-frequency applications
• Designed with robust SMA interface for secure connectivity
• Capable of withstanding extreme thermal environments

Applications

• Military radar systems requiring signal level control
• Avionics communication equipment testing
• High-frequency measurement instrumentation setups

Procurement Notes

Verify the specific suffix 'N' against official datasheets to confirm non-screened status, as variations exist within the M3933 series. Ensure compatibility with existing SMA infrastructure before procurement. Cross-reference the manufacturer's latest documentation to confirm current RoHS compliance and environmental ratings.

Selection Notes

Select this model when a fixed 9.5 dB attenuation is required within the 18 GHz bandwidth. Consider the 2W power handling limit for system integration. Verify that the SMA gender configuration matches the circuit design requirements. Evaluate the wide temperature range suitability for harsh environment deployments.

Part Context

This component belongs to the M3933 series of connectorized attenuators designed for military and aerospace standards. The series offers various attenuation values and connector types. The M3933/25-77N specifically addresses needs for moderate attenuation in high-frequency SMA-based architectures.

Replacement Considerations

M3933/25-78S is listed as a parameter equivalent substitute. Verify electrical specifications and screening requirements before substitution.