7446631010

Overview

The Würth Elektronik 7446631010 is a surface-mount common mode choke from the WE-LF series, designed for mains power line filtering. It features two lines with an inductance of 10 mH at 10 kHz and a rated current of 1 A. The component has a maximum DC resistance of 550 milliohms and operates within a temperature range of -40°C to 125°C. Its physical dimensions are 23.30 mm in length, 18.50 mm in width, and a maximum height of 11.50 mm.

Feature Summary

• Surface mount construction for automated PCB assembly
• Current-compensated design for mains power line applications
• High inductance value for effective noise suppression

Applications

• Mains power line filtering
• AC/DC converter input stages
• Offline switching power supplies

Procurement Notes

Verify the specific package variant against the datasheet, as ordering suffixes may indicate different reel quantities or tape specifications. Confirm that the 1A current rating aligns with the thermal management requirements of the final application. Ensure the 10mH inductance tolerance meets the circuit's noise suppression criteria. Cross-reference the RoHS certification status if environmental compliance is mandatory for the target market.

Selection Notes

Select this component when high inductance is required for low-frequency common mode noise attenuation in mains-powered devices. The surface mount form factor suits space-constrained designs requiring automated placement. Evaluate the 550 milliohm DCR to ensure voltage drop and power loss remain within acceptable limits for the 1A load current. Consider the 11.50mm height profile for clearance constraints within the enclosure.

Part Context

This part belongs to the WE-LF series of wire-wound surface mount common mode chokes. The series is characterized by its ability to handle significant currents while providing substantial impedance to common mode interference. These components are engineered specifically for use in AC mains inputs where robust noise reduction is critical for electromagnetic compatibility.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.