7427250

Overview

The Würth Elektronik part number 7427250 is a split flat ferrite core designed for electromagnetic interference (EMI) suppression. It belongs to the WE-SFA series and features an impedance of 194 Ohms at a test frequency of 100 MHz. The component has a 26-pole configuration suitable for flat ribbon cables. Its external dimensions are 28.5 mm in length, 45 mm in width, and 13 mm in height, with an inner opening of 34.00 mm by 2.00 mm. The material composition is 4W620, and it operates within a temperature range of -25°C to +125°C.

Feature Summary

• Split design allows installation onto existing flat ribbon cables without disconnecting signals.
• High impedance characteristic provides effective attenuation of high-frequency noise.
• Specific geometry accommodates 26-pole flat cable configurations.

Applications

• Suppression of EMI on flat ribbon cables in computer data systems
• Noise reduction on internal bus connections in electronic equipment
• Signal integrity enhancement in industrial control wiring

Procurement Notes

Verify the specific impedance value and physical dimensions against the official datasheet before integration. Confirm that the 26-pole capacity matches the target cable assembly. Ensure the operating temperature range meets the environmental requirements of the final application. Check for RoHS compliance status as indicated in the manufacturer documentation.

Selection Notes

Select this component when dealing with multi-conductor flat cables requiring targeted noise suppression. The 194 Ohm impedance at 100 MHz indicates suitability for higher frequency interference compared to lower impedance alternatives. The split form factor is essential for retrofitting or assembling cables where continuous cores cannot be threaded. Consider the physical size constraints of the enclosure during selection.

Part Context

This component is part of the WE-SFA series from Würth Elektronik, specialized for flat ferrite applications. It complements other ferrite solutions like the STAR-RING and STAR-TEC series, which utilize snap-on designs for round cables. The WE-SFA series focuses specifically on the unique geometric requirements of flat ribbon connectors and cables common in digital interfaces.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. When evaluating alternatives, ensure the replacement offers comparable impedance at 100 MHz and fits the 26-pole flat cable profile. Verify that the alternative material, such as 4W620, maintains similar magnetic properties and thermal stability.

FAQ

What is the test frequency for the specified impedance?

The impedance of 194 Ohms is measured at a test frequency of 100 MHz.

Can this ferrite core be used on round cables?

No, the 7427250 is designed as a split flat ferrite core with dimensions (34.00mm x 2.00mm) specific to flat ribbon cables, not round wires.