744821201

Overview

The Würth Elektronik 744821201 is a radial leaded common mode choke from the WE-CMB series, designed for power line filtering. It features an inductance of 1 mH with a tolerance of ±30% and supports a maximum DC current of 2 A. The component exhibits a maximum DC resistance of 0.045 Ω per winding. It operates within a temperature range up to +125°C and utilizes a through-hole mounting configuration suitable for industrial applications.

Feature Summary

• Radial through-hole construction for robust PCB integration
• High saturation current capability for stable performance under load
• Low DC resistance minimizes power loss and thermal generation

Applications

• Industrial power supply input filtering
• EMC noise suppression on AC/DC converter lines
• Common mode interference reduction in control circuits

Procurement Notes

Verify the specific order code against the manufacturer's official datasheet to ensure compatibility with design requirements. Confirm that the 1 mH inductance value aligns with the target frequency attenuation needs. Check that the 2 A current rating exceeds the maximum expected operating current including transient peaks. Ensure the radial package dimensions fit the designated PCB footprint without mechanical interference.

Selection Notes

Select this component when a high-inductance common mode filter is required for low-frequency noise suppression in power lines. The 1 mH value provides significant impedance for common mode signals while maintaining manageable size. Consider the 2 A current rating for moderate power applications where thermal management is critical. The through-hole option offers superior mechanical stability compared to surface mount alternatives in vibration-prone environments.

Part Context

This part belongs to the Würth Elektronik WE-CMB series of common mode chokes. These components are engineered for general-purpose EMI suppression in power electronics. The series offers various inductance and current ratings to suit different application constraints. The 744821201 specifically targets applications requiring higher inductance values for enhanced low-frequency filtering performance.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.