744290121

Overview

The Würth Elektronik 744290121 is a WE-UCF series surface-mount common mode choke designed for power and signal line filtering. It features two channels with an inductance of 120 µH at 10 kHz, a maximum DC current rating of 5.5 A, and a maximum DC resistance of 10.5 mΩ. The component operates within a temperature range of -40°C to +125°C and has physical dimensions of 14 mm length, 12.5 mm width, and 7.8 mm height.

Feature Summary

• Provides effective common mode noise suppression for dual-line applications
• Supports high current handling capabilities suitable for power circuits
• Utilizes a compact surface-mount design for automated assembly

Applications

• Power supply input filtering
• Signal line noise reduction
• Industrial control systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer datasheet to ensure correct packaging configuration, as variants may exist for tape and reel or cut tape formats. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement to align with assembly process standards and storage conditions.

Selection Notes

Select this component when dual-channel common mode attenuation is required at 10 kHz with significant current capacity. The low DC resistance minimizes power loss in high-current paths. Ensure the PCB footprint matches the specified 14 mm by 12.5 mm dimensions and that the operating temperature environment remains within the -40°C to +125°C operational range.

Part Context

This part belongs to the WE-UCF series of SMD sectional common mode chokes from Würth Elektronik. The series is engineered for universal filtering applications, offering a balance of high inductance and current handling in a robust surface-mount package suitable for demanding electronic environments.

Replacement Considerations

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