7427805

Overview

The Würth Elektronik 7427805 is a flat ferrite core from the WE-FLAT series, designed for electromagnetic interference suppression on flexible printed circuit boards. It features an impedance of 103 Ω at 100 MHz and accommodates cables up to 20 lines. The component measures 20 mm in width with a thickness of 0.5 mm. Constructed from ferrite material, it supports digital device applications and complies with RoHS standards.

Feature Summary

• Engineered specifically for flexible printed circuit board applications
• Provides electromagnetic interference suppression capabilities
• Accommodates up to 20 cable lines within its structure

Applications

• Flexible printed circuit boards
• Digital devices
• Electromagnetic interference suppression

Procurement Notes

Verify the specific impedance value against official datasheets, as sources indicate variations between 74 Ω and 103 Ω at 100 MHz. Confirm physical dimensions match design requirements, noting discrepancies between 0.5 mm and 0.8 mm internal widths in available documentation. Ensure compliance with RoHS standards is explicitly stated for the target production batch.

Selection Notes

Select this component when integrating EMI suppression into flexible PCB designs requiring high line count support. The low profile thickness suits space-constrained layouts. Evaluate the impedance characteristics against noise frequency profiles to ensure effective attenuation. Verify compatibility with the specific ribbon cable or flex circuit geometry intended for installation.

Part Context

This part belongs to the WE-FLAT series by Würth Elektronik, specialized for flat cable and flexible circuit applications. Unlike standard snap-on cores, these are tailored for rigid-flex or pure flex board integration. The series focuses on compact form factors suitable for modern electronic assemblies where traditional cylindrical cores cannot fit.

Replacement Considerations

Cross-reference with other WE-FLAT variants for different impedance levels. Check manufacturer catalogs for updated revisions ensuring identical footprint and electrical performance. No direct public substitute part numbers are confirmed.