DFKH-31-0008

Common Mode Chokes Overview

The Schurter DFKH-31-0008 is a compensated common mode choke from the DFKH series, designed for through-hole radial mounting. It features an inductance of 2 mH and supports a maximum DC current of 6A with a maximum DC resistance of 24mΩ. The component operates within a temperature range of -25°C to +100°C and has a maximum self-resonant frequency of 1.2MHz. Tolerance is specified as -30% to +50%. Physical dimensions are 31.5mm x 18.5mm x 33mm with lead spacings of 12.5mm or 15mm.

Common Mode Chokes Feature Summary

• Compensated magnetic design for stable performance under DC bias conditions
• Radial through-hole construction for standard PCB integration
• High current handling capability suitable for power line filtering

Common Mode Chokes Applications

• Power supply input filtering
• EMI suppression in AC/DC converters
• Common mode noise reduction in industrial 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 variants exist within the DFKH series. Confirm that the -30/+50% tolerance aligns with circuit design margins. Ensure the operating environment stays within the -25°C to +100°C thermal limits defined by the manufacturer's datasheet specifications.

Common Mode Chokes Selection Notes

Select this component when a compensated choke is required to maintain inductance stability under high DC bias currents up to 6A. The radial package suits manual or wave soldering processes. Consider the physical size constraints given the 31.5mm length. The wide tolerance range requires careful consideration if precise impedance matching is critical for the application's EMI compliance strategy.

Common Mode Chokes Part Context

This part belongs to the Schurter DFKH series of compensated common mode chokes. These components are engineered to minimize inductance drop caused by DC current flow, making them distinct from standard chokes. The series is widely used in applications requiring robust noise suppression where significant DC offset is present in the signal or power lines.

Common Mode Chokes Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Cross-referencing requires matching inductance, current rating, and compensation characteristics.