744220103

Overview

The Würth Elektronik 744220103 is a WE-SL2 series common mode choke designed for signal line filtering. It features an inductance of 10 mH at 10 kHz and offers an impedance of 25 kOhms. The component supports a maximum DC current of 350 mA with a maximum DC resistance of 1.2 Ohms. It operates within a temperature range of -40°C to +125°C and carries AEC-Q200 qualification. The shielded device measures 9.2 mm x 6 mm x 5.3 mm and utilizes SMD/SMT mounting.

Feature Summary

• Provides effective common mode noise suppression for signal lines through high impedance characteristics.
• Features a shielded construction to minimize electromagnetic interference coupling.
• Designed for surface mount assembly to facilitate automated PCB integration.

Applications

• Signal line filtering in automotive electronic systems
• Noise suppression in data communication interfaces
• EMI reduction in industrial control circuits

Procurement Notes

Verify the specific ordering suffix against the manufacturer datasheet to ensure correct packaging and tolerance specifications. Confirm that the AEC-Q200 qualification aligns with target application requirements. Check for any recent product change notices regarding material composition or manufacturing location updates before finalizing procurement plans.

Selection Notes

Select this component when signal integrity protection is required over power handling capacity. The 350 mA rating suits low-current signal paths rather than power delivery lines. Ensure the 1.2 Ohm DC resistance does not introduce excessive voltage drop in the specific circuit design. Verify footprint compatibility with the 9.2 mm x 6 mm package dimensions during layout.

Part Context

This part belongs to the WE-SL2 series, which focuses on compact signal line filtering solutions. The series emphasizes small form factors suitable for dense PCB layouts while maintaining robust EMI performance. It represents Würth Elektronik's approach to integrating shielding directly into small surface-mount components for reliable operation in constrained spaces.

Replacement Considerations

Consult official Wurth Elektronik substitution guides for verified alternatives. Cross-reference impedance curves and physical dimensions to ensure mechanical fit. Validate electrical parameters such as saturation behavior and thermal performance against the original specification sheet.

FAQ

What is the test frequency for the specified inductance value?

The inductance of 10 mH is measured at a test frequency of 10 kHz.

Is this component qualified for automotive applications?

Yes, the 744220103 holds AEC-Q200 qualification, indicating suitability for automotive environments.