WQCF2012Z0M121PB

Overview

The WQCF2012Z0M121PB is a wirewound common mode choke manufactured by Walsin Technology Corporation, designed for automotive applications. It features two lines with an impedance of 120 Ohms at 100 MHz and a maximum DC resistance of 300 mOhms. The component supports a maximum DC current rating of 370 mA.

Feature Summary

• Wirewound construction for effective common mode noise filtering
• Automotive-grade reliability and qualification
• Compact surface-mount package suitable for high-density layouts

Applications

• USB signal line filtering
• Ethernet interface protection
• HDMI differential signal line suppression

Procurement Notes

Verify the complete part number including suffixes to ensure correct impedance and tolerance specifications. Confirm automotive grade requirements against project standards. Check datasheet for thermal derating curves and saturation current limits under operating conditions.

Selection Notes

Select this component when low DC resistance and moderate current handling are required for high-speed data lines. Evaluate impedance characteristics at target frequencies to ensure adequate noise attenuation. Consider physical dimensions for PCB space constraints in automotive modules.

Part Context

This component belongs to Walsin's passive component portfolio, specifically within their common mode choke series. It addresses EMI suppression needs in modern electronic systems where signal integrity is critical. The product aligns with industry trends toward miniaturization and robust performance in harsh environments.

Replacement Considerations

Consult official substitution lists for equivalent components with matching impedance and current ratings. Verify pin compatibility and footprint dimensions before swapping. Ensure alternative parts meet the same automotive qualification standards.