744825320

Overview

The Würth Elektronik WE-CMB 744825320 is a common mode power line choke designed for electromagnetic interference suppression. It features a radial through-hole mounting style and an unshielded construction. The component provides an inductance of 20 mH with a maximum DC resistance of 160 mOhms. It supports a continuous current rating of 3 A and operates within a temperature range of -40 °C to +125 °C.

Feature Summary

• Radial leaded construction for through-hole PCB integration
• Unshielded magnetic core design for standard EMI filtering
• High thermal stability suitable for demanding environments

Applications

• Switch-mode power supply input stages
• General-purpose EMI suppression circuits
• Power line noise filtering

Procurement Notes

Verify the specific part number suffix against official Wurth Elektronik documentation to confirm exact electrical tolerances and packaging details. Ensure compatibility with existing board layouts regarding lead spacing and height constraints before finalizing procurement orders.

Selection Notes

Select this component when a 20 mH common mode inductance is required for low-frequency noise attenuation. The 3 A current rating suits moderate power applications, while the through-hole format offers mechanical robustness compared to surface-mount alternatives.

Part Context

This component belongs to the WE-CMB series of common mode chokes from Würth Elektronik. The series utilizes manganese-zinc ferrite materials to provide effective high-frequency noise suppression in power electronics applications requiring reliable EMI performance.

Replacement Considerations

Cross-reference with other WE-CMB variants such as 744825330 or 744825340 if different inductance values are needed. Verify that substitute parts maintain the same radial footprint and current handling capabilities.