744212221

Overview

The Würth Elektronik 744212221 is a surface-mount common mode line filter from the WE-SL1 series. It features two channels with an inductance of 220 µH per channel and an impedance of 1200 Ω at 100 kHz. The component supports a maximum DC current of 300 mA and has a maximum DC resistance of 280 mΩ. It operates within a temperature range of -40°C to +105°C and measures 6.5 mm x 3.6 mm x 1.65 mm.

Feature Summary

• Low profile design suitable for space-constrained PCB layouts
• High current handling capability up to 300 mA
• Optimized for reflow soldering processes

Applications

• Signal line filtering in electronic circuits
• Common mode noise suppression
• EMI reduction in compact devices

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct packaging and tolerance specifications. Confirm that the selected variant meets the required thermal and electrical ratings for the target application environment before finalizing procurement orders.

Selection Notes

Select this component when a low-profile SMT common mode choke is required for signal lines. Ensure the circuit current does not exceed 300 mA and the operating voltage remains within the 80 VDC limit. Verify compatibility with standard reflow soldering profiles during the design phase.

Part Context

This part belongs to the WE-SL1 series of common mode line filters manufactured by Würth Elektronik. These components are designed for surface mount technology and provide effective noise suppression for differential signals while maintaining a minimal footprint on the printed circuit board.

Replacement Considerations

Consult the official Wurth Elektronik documentation for verified substitute part numbers within the WE-SL series or other compatible common mode filter families.