78271112

Overview

The Würth Elektronik 78271112 is a snap-on ferrite core from the WE-CAR-TEC series, designed for electromagnetic interference suppression. It features a split design with a key for easy installation around cables without disconnection. The component has an inner diameter of 6 mm and utilizes 4W620 material. Key electrical parameters include an impedance of 316 ohms at 100 MHz and 151 ohms at 25 MHz. It operates within a temperature range of -50°C to +105°C and complies with REACH and RoHS standards.

Feature Summary

• Snap-on split core design allows quick installation on existing cables without disconnecting them.
• Integrated key mechanism ensures secure closure and proper alignment of the magnetic circuit.
• Utilizes high-performance 4W620 ferrite material for effective broadband noise attenuation.
• RoHS compliant construction suitable for general electronic equipment applications.

Applications

• Electromagnetic interference suppression in general electronic equipment
• Noise filtering on power and signal cables
• Compliance support for EMC requirements in consumer electronics

Procurement Notes

Verify the specific part number suffix (e.g., S) if a keyed version is required, as standard variants may differ. Confirm that the application is limited to general electronic equipment, as this component is not authorized for safety-related or automotive uses. Check operating temperature limits against environmental conditions. Ensure cable diameter fits within the 6 mm inner diameter specification. Validate compliance requirements such as RoHS and REACH for the target market.

Selection Notes

Select this component when a non-invasive EMI solution is needed for cables up to 6 mm in diameter. The 4W620 material offers high impedance in the MHz range, suitable for digital noise. Consider the split-core convenience over solid cores for retrofitting. Evaluate the 316 ohm impedance at 100 MHz against the noise spectrum. Ensure the device is used only in general equipment contexts due to safety restrictions.

Part Context

This part belongs to the WE-CAR-TEC series of snap-on ferrite cores by Würth Elektronik. These components are engineered for rapid deployment in EMC mitigation tasks. The series provides various sizes and materials to match different cable diameters and frequency requirements. The 78271112 specifically targets smaller cables with its 6 mm aperture.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Users should consult manufacturer catalogs for equivalent impedance and size specifications from other brands if direct substitution is necessary.

FAQ

Is the 78271112 suitable for safety-related applications?

No, the datasheet explicitly states that this product is designed and developed for usage in general electronic equipment only and is not authorized for safety-related applications.

What is the maximum operating temperature for this ferrite core?

The maximum operating temperature is +105°C, with a minimum operating temperature of -50°C.

Does the 78271112 have a key for opening?

Yes, the variant 78271112S includes a key to open the ferrite ring, facilitating easier installation around cables.