DFKH-31-0001

Common Mode Chokes Overview

The Schurter DFKH-31-0001 is a magnetically compensated common mode choke from the DFKH series, designed for single-phase applications. It features an inductance of 2 mH and supports a maximum DC current of 6A. The component has a maximum DC resistance of 24mΩ with a tolerance range of -30% to +50%. It utilizes radial mounting with lead spacings of 12.5mm or 15mm. Physical dimensions are 31.5 x 18.5 x 33mm. The device operates between -25°C and +100°C, with a maximum self-resonant frequency of 1.2MHz.

Common Mode Chokes Feature Summary

• Magnetically compensated design for high-performance filtering
• Radial through-hole construction for standard PCB integration
• High saturation current capability for power line protection

Common Mode Chokes Applications

• Single-phase power supply input filtering
• EMI suppression in AC mains circuits
• Common mode noise reduction in electronic equipment

Common Mode Chokes Procurement Notes

Verify the specific lead pitch requirement (12.5mm vs 15mm) against the target PCB footprint before ordering, as both options are listed for this series. Confirm that the 6A maximum DC current rating aligns with the peak load requirements of the application circuit. Ensure the operating temperature range up to 100°C is sufficient for the intended thermal environment. Cross-reference the -30% to +50% inductance tolerance with circuit sensitivity specifications.

Common Mode Chokes Selection Notes

Select this component when a high-current, magnetically compensated choke is required for single-phase lines. Compare the 24mΩ DCR against voltage drop constraints in the power path. Evaluate the physical size of 31.5 x 18.5 x 33mm against available board space. Consider the self-resonant frequency limit of 1.2MHz to ensure effective attenuation at the target noise frequencies.

Common Mode Chokes Part Context

The DFKH-31-0001 belongs to Schurter's DFKH series of magnetically compensated chokes. This series is engineered for demanding single-phase applications where high DC current handling and effective common mode noise suppression are critical. The magnetic compensation allows for higher current capacity compared to standard chokes of similar size.

Common Mode Chokes Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs by matching inductance, current rating, and physical dimensions if sourcing alternatives.