744821240

Overview

The Würth Elektronik 744821240 is a through-hole common mode choke from the WE-CMB series. It features an inductance of 4 mH and supports a maximum DC current of 1.5 A. The component has a maximum DC resistance of 140 mΩ. It operates within a temperature range of -40°C to +125°C. The physical dimensions are 15.8 mm length, 7.8 mm width, and 18 mm height.

Feature Summary

• Through-hole mounting configuration for robust PCB integration
• Ferrite core construction for effective noise suppression
• High current handling capability suitable for power line applications

Applications

• Power supply input filtering
• EMI suppression in AC/DC converters
• Noise reduction in industrial control systems

Procurement Notes

Verify the specific package type and lead configuration against the official datasheet before ordering. Confirm that the 1.5A current rating meets the design requirements. Ensure the through-hole footprint matches the target PCB layout. Check for RoHS compliance status if required by project specifications.

Selection Notes

Select this component when high current capacity is required for common mode noise suppression. The through-hole design offers mechanical stability compared to surface mount alternatives. Consider the 140mΩ DCR impact on voltage drop in low voltage circuits. Evaluate the 4mH inductance value against the target frequency spectrum for interference.

Part Context

This part belongs to the WE-CMB series of common mode chokes manufactured by Würth Elektronik. The series focuses on power line applications requiring high current ratings. The WE-CMB line provides reliable EMI filtering solutions for various electronic equipment.

Replacement Considerations

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