M3933/25-47N

Overview

The M3933/25-47N is an RF attenuator manufactured by Cinch Connectivity Solutions under the Midwest Microwave brand. It provides a fixed attenuation value of 21 dB with a tolerance of ±0.7 dB. The device operates within a frequency range of 0 Hz to 12.4 GHz and maintains a 50 Ohm impedance. It features SMA connectors and supports a power rating of 2 Watts. This component is designed as an in-line module suitable for high-reliability applications.

Feature Summary

• Fixed 21 dB attenuation with ±0.7 dB tolerance
• Operates from DC to 12.4 GHz
• SMA connector interface for in-line integration
• 2 Watt power handling capability

Applications

• RF signal level control in microwave systems
• Test and measurement equipment calibration
• Military and aerospace communication links
• Signal conditioning in radar systems

Procurement Notes

Verify the specific suffix 'N' against official datasheets to confirm non-RoHS status and MIL-spec compliance. Confirm SMA gender configuration (male/female) matches system requirements. Check current availability as this item may be subject to long lead times or limited stock due to its specialized nature.

Selection Notes

Select this model when a precise 21 dB reduction is required up to 12.4 GHz. Ensure the 2W power rating exceeds peak signal levels. Compare against other M3933/25 variants if different attenuation values like 8dB or 24dB are needed. Verify connector polarity compatibility with existing SMA infrastructure.

Part Context

This part belongs to the M3933/25 series of connectorized attenuators. It is distinct from higher-frequency models like the ATT-0550 series which operate up to 26.5 GHz. It differs from lower-frequency variants such as the M3933/25-25N which is limited to 2 GHz. The series is characterized by rugged construction for demanding environments.

Replacement Considerations

Direct substitutes include other M3933/25 series parts with similar attenuation, such as M3933/25-34N (8dB) or M3933/25-50N (24dB), though attenuation values differ. Cross-reference with generic SMA attenuators only if military specifications are not mandatory.