M3933/25-61N

Overview

The M3933/25-61N is a fixed RF attenuator manufactured by Amphenol SV Microwave. It features SMA male to female connectors and operates within a frequency range of 0 Hz to 18 GHz. The component provides a nominal attenuation value of 1.5 dB with a 50 Ohms impedance. It is designed for non-screened applications and supports a maximum power rating of 2 Watts. The unit is packaged in bulk and functions reliably across an operating temperature range from -65°C to +165°C.

Feature Summary

• Provides precise 1.5 dB signal attenuation for microwave circuits
• Supports high-frequency operation up to 18 GHz
• Features robust SMA connector interface for reliable interconnection
• Designed for wide temperature stability in demanding environments

Applications

• Microwave circuit power level adjustment
• Satellite communication system calibration
• RF test and measurement equipment
• Military radar signal conditioning

Procurement Notes

Verify the specific suffix 'N' indicates the non-screened variant when ordering, as screened versions exist within the same series. Confirm that the 1.5 dB attenuation value matches the required circuit design specifications. Ensure the SMA male-to-female configuration aligns with the system's connector requirements. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this model when a low attenuation value near 1.5 dB is required for the 18 GHz band. Consider the non-screened construction if shielding is provided elsewhere in the system architecture. Evaluate the 2W power handling capability against peak signal levels. Compare against other M3933 variants if different attenuation values or screening options are needed for the specific application.

Part Context

This component belongs to the M3933 series of space attenuators designed for satellite and microwave circuits. It complements other models like the M3933/25-61S, which offers similar electrical performance but includes screening. The series provides various attenuation values and connector configurations to support diverse RF system requirements.

Replacement Considerations

The M3933/25-61S serves as a parameter-equivalent substitute, offering identical electrical specifications but with a screened construction. Verify that the additional screening does not interfere with the mechanical layout or thermal management of the target assembly before substitution.