78201449321

Overview

The Würth Elektronik part number 78201449321 is an oval-shaped EMC suppression cable ferrite core belonging to the WE-OEFA series. It provides a nominal impedance of 55.5 Ohms at frequencies ranging from 1 MHz to 100 MHz. The component features a solid construction with an internal diameter of 35.5 mm and an external dimension of 49.0 mm by 24.5 mm. Designed for free-hanging installation, it accommodates maximum cable diameters of 31 mm by 16 mm. The unit is manufactured in Taiwan and complies with RoHS standards.

Feature Summary

• Oval geometry designed for efficient suppression on flat or rectangular cables
• Solid construction eliminates the need for fastening hardware during installation
• Optimized impedance profile across the 1 MHz to 100 MHz frequency range

Applications

• EMC suppression for automotive wiring harnesses
• Noise filtering for industrial control cable assemblies
• EMI reduction for power supply input lines

Procurement Notes

Verify the specific impedance tolerance requirements against the manufacturer datasheet before finalizing the design. Confirm that the physical dimensions of the target cable bundle fit within the specified maximum cross-section limits. Ensure compliance with regional environmental regulations such as RoHS is documented for the project records.

Selection Notes

Select this component when high current carrying capacity is required without magnetic saturation concerns typical of split cores. The oval shape allows for better coverage of flat ribbon cables compared to circular rings. Consider the free-hanging nature for applications where space constraints prevent snap-on mounting mechanisms.

Part Context

This ferrite core belongs to the WE-OEFA series, which specializes in oval-shaped suppression components. The series targets applications requiring robust noise attenuation on larger gauge cables or multi-conductor bundles. It complements the manufacturer's broader portfolio of EMI suppression solutions.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Cross-reference with other oval ferrite cores only if electrical impedance curves match exactly.

FAQ

What is the maximum cable size supported by this ferrite core?

The component supports a maximum cable diameter of 31 mm by 16 mm.

Is this ferrite core split or solid?

It is a solid, free-hanging ferrite core that does not require a snap-on mechanism.