DKFP-D21D-043L

Common Mode Chokes Overview

The DKFP-D21D-043L is a current compensated common mode choke from the Schurter DKFP series, designed for through-hole PCB mounting. It features an inductance of 3.3 mH per winding with a maximum DC current rating of 4 A and a maximum DC resistance of 554 mohms. The component operates within a temperature range of -40 °C to +125 °C and exhibits a self-resonant frequency of approximately 160 kHz. Its compact radial leaded construction facilitates integration into noise suppression applications requiring high current handling capabilities.

Common Mode Chokes Feature Summary

• Provides magnetic compensation to minimize external field interference while suppressing common mode noise
• Supports high continuous DC current loads suitable for power supply input stages
• Utilizes a robust through-hole radial leaded package for secure PCB attachment

Common Mode Chokes Applications

• Input filtering for switching power supplies
• Noise suppression in AC/DC converter circuits
• EMI mitigation in industrial control equipment

Common Mode Chokes Procurement Notes

Verify the specific part number DKFP-D21D-043L against official Schurter documentation to confirm electrical parameters such as inductance and current ratings. Ensure compatibility with your PCB footprint and thermal requirements. Cross-reference datasheets for precise mechanical dimensions and insulation characteristics before finalizing procurement decisions.

Common Mode Chokes Selection Notes

Select this component when designing circuits requiring high current handling alongside effective common mode noise attenuation. The 4 A rating and 3.3 mH inductance make it suitable for robust power line filtering. Consider the through-hole mounting style if mechanical stability is prioritized over surface area constraints.

Common Mode Chokes Part Context

This component belongs to the DKFP series of magnetically compensated chokes manufactured by Schurter. These devices are engineered for compact noise suppression in environments demanding reliable performance across wide temperature ranges. The series offers various inductance and current combinations to suit diverse electronic design needs.

Common Mode Chokes Replacement Considerations

Consult Schurter's official substitution guide or equivalent manufacturer catalogs for verified alternatives. Ensure any replacement matches the 3.3 mH inductance, 4 A current rating, and through-hole radial package specifications to maintain circuit integrity.