M3933/25-69N

Overview

The M3933/25-69N is a fixed RF attenuator manufactured by Amphenol SV Microwave, designed for high-frequency applications. It features SMA connectors with a male plug on one side and a female jack on the other. The component provides a nominal attenuation of 5.5 dB across a frequency range from DC to 18 GHz. It operates at a 50 Ohm impedance and supports a power rating of 2 Watts. The unit is constructed with stainless steel shielding and is rated for an operating temperature range between -65°C and +165°C.

Feature Summary

• Provides precise signal attenuation in RF circuits using SMA interface
• Features robust stainless steel construction for durability
• Supports wide operational temperature extremes for harsh environments

Applications

• Military and aerospace RF systems requiring MIL-Spec components
• High-frequency test and measurement equipment
• Communication systems operating up to 18 GHz

Procurement Notes

Verify the specific suffix 'N' indicates non-screened or nickel-plated variants if critical, though datasheets often list it as screened. Confirm that the SMA gender configuration matches the circuit design requirements. Ensure the 2W power rating aligns with system thermal management capabilities. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this model when a 5.5 dB attenuation value is required within the 18 GHz bandwidth. The SMA interface ensures compatibility with standard RF infrastructure. Consider the stainless steel body for mechanical strength in vibration-prone applications. Verify that the 50 Ohm impedance matches the source and load characteristics of the transmission line.

Part Context

This part belongs to the M3933 series of RF attenuators, which are widely used in defense and industrial sectors. The series offers various attenuation values and connector types. The M3933/25-69N specifically utilizes the SMA connector family, known for its reliability and performance in microwave frequencies. It serves as a passive component for signal level adjustment.

Replacement Considerations

M3933/25-69S is listed as a parameter equivalent substitute. Verify if the screening difference impacts the specific application environment. Ensure all electrical parameters including attenuation tolerance and frequency response remain identical before substitution.