DKFP-B22B-04D7

Common Mode Chokes Overview

The DKFP-B22B-04D7 is a current compensated common mode filter choke manufactured by Schurter Inc. Designed for through-hole PCB mounting, this component features a single channel configuration with an inductance of 700 µH per winding (2x0.7 mH). It supports a maximum DC current of 4 A and exhibits a typical maximum DC resistance of 18 mΩ. The self-resonant frequency is specified at 6.5 MHz. The unit operates within a temperature range of -40 °C to +125 °C and measures 18.5 mm in length, 18 mm in width, and 13 mm in height.

Common Mode Chokes Feature Summary

• Magnetically compensated design for effective noise suppression
• Through-hole termination for secure PCB integration
• Compact physical footprint suitable for space-constrained layouts

Common Mode Chokes Applications

• Current compensated noise suppression circuits
• Common mode filtering in power supply inputs
• Electromagnetic interference reduction in electronic assemblies

Common Mode Chokes Procurement Notes

Verify the complete part number DKFP-B22B-04D7 against official Schurter documentation to ensure correct inductance and current ratings. Confirm that the through-hole package dimensions match the target PCB footprint. Cross-reference the 4 A current rating and 18 mΩ resistance values with the specific datasheet revision to avoid substitution errors with other DKFP series variants.

Common Mode Chokes Selection Notes

Select this component when a high-current common mode choke with low DC resistance is required. The 4 A rating distinguishes it from lower-current variants in the DKFP family. Ensure the application environment stays within the -40 °C to +125 °C operating range. Verify that the 700 µH inductance provides sufficient attenuation for the target noise frequencies without causing excessive voltage drop under load conditions.

Common Mode Chokes Part Context

This component belongs to the DKFP series of current compensated chokes from Schurter Inc. These devices are engineered for compact noise suppression applications where magnetic compensation reduces core saturation effects under high differential currents. The series offers various inductance and current combinations, with this specific model optimized for higher current handling compared to standard common mode filters.

Common Mode Chokes Replacement Considerations

Direct substitutes must match the 700 µH inductance, 4 A current rating, and 18.5 x 18 x 13 mm dimensions. Verify that alternative components maintain the same through-hole pinout and thermal characteristics. Check manufacturer datasheets for equivalent performance in self-resonant frequency and DC resistance.