744272121

Overview

The Würth Elektronik 744272121 is a surface-mount common mode line filter from the WE-SL5 series. It features an inductance of 120 µH per line and supports a rated current of 2.5 A. The component exhibits a maximum DC resistance of 25 mΩ and provides an impedance of 460 Ω at 30 MHz. Designed for horizontal mounting, it measures 10.00 mm x 8.70 mm with a maximum height of 6.50 mm. It operates within a temperature range of -40°C to 125°C and is suitable for power and signal line filtering applications.

Feature Summary

• Utilizes sectional winding technology for high-current handling capabilities
• Optimized for reflow soldering profiles in surface-mount assembly
• Provides effective common mode noise suppression for dual-line circuits

Applications

• Power supply input filtering
• Signal line noise suppression
• EMI reduction in compact electronic devices

Procurement Notes

Verify the specific ordering suffix against the manufacturer datasheet to ensure correct packaging configuration. Confirm that the selected variant matches the required reel or cut tape specifications for your production line. Cross-reference the RoHS compliance status and any recent PCN updates regarding material changes or production site transfers before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring robust common mode rejection for lines carrying up to 2.5 A. Ensure the PCB footprint accommodates the 10.00 mm x 8.70 mm dimensions and 6.50 mm height. Verify that the thermal environment remains within the specified -40°C to 125°C operating range during continuous operation.

Part Context

This part belongs to the WE-SL5 series of common mode chokes manufactured by Würth Elektronik. The series is characterized by its use of sectional winding techniques to achieve high saturation currents in a compact surface-mount package. These filters are engineered for efficient EMI suppression in modern electronics where space constraints and high current demands coexist.

Replacement Considerations

Consult official substitution guides for compatible alternatives within the WE-SL5 family or equivalent series from other manufacturers. Ensure any substitute matches the critical parameters of 120 µH inductance, 2.5 A current rating, and compatible physical footprint.