7446721027

Overview

The Würth Elektronik 7446721027 is a through-hole common mode power line choke from the WE-LF series. It provides an inductance of 27 mH at 10 kHz with a maximum DC resistance of 700 mOhms and a current rating of 600 mA. Designed for robust performance, it operates within a temperature range of -40°C to +125°C. The component utilizes a leaded package suitable for standard PCB mounting applications requiring effective electromagnetic interference suppression.

Feature Summary

• Provides high common mode inductance for effective noise attenuation on power lines
• Features low DC resistance to minimize signal loss and power dissipation
• Rated for operation across a wide industrial temperature range

Applications

• Power line filtering in electronic equipment
• Electromagnetic interference suppression in industrial control systems
• Noise reduction in consumer electronics power supplies

Procurement Notes

Verify the specific ordering suffix and RoHS compliance status directly against the manufacturer's latest datasheet before procurement. Confirm that the through-hole package dimensions match your PCB footprint requirements. Ensure the 600 mA current rating meets the operational demands of your circuit design to prevent saturation or overheating during peak load conditions.

Selection Notes

Select this component when high inductance values are required for common mode noise suppression in through-hole designs. The 27 mH value offers significant attenuation capabilities compared to lower inductance alternatives. Consider the 700 mOhm DC resistance impact on voltage drop if the application involves sensitive low-voltage circuits or high-current paths near the rated limit.

Part Context

This part belongs to the WE-LF series of common mode chokes manufactured by Würth Elektronik. The series is designed for general-purpose power line filtering applications. The 7446721027 variant specifically targets scenarios requiring higher inductance values while maintaining a compact through-hole form factor suitable for various industrial and commercial electronic assemblies.

Replacement Considerations

Consult official Wurth Elektronik substitution guides for verified equivalents. Cross-reference inductance, current rating, and physical dimensions when evaluating alternative components to ensure functional compatibility without redesigning the PCB layout.