74278081

Overview

The Würth Elektronik 74278081 is a flat ferrite core belonging to the WE-FLAT series, designed for flexible printed circuit boards. It features a core material of 4W810 with an impedance of 19 ohms at 100 MHz. The component measures 11 mm in width and 0.5 mm in thickness. It operates within a maximum temperature range of +125°C and complies with RoHS standards.

Feature Summary

• Designed specifically for flexible printed circuit board applications
• Utilizes 4W810 core material for effective noise suppression
• Provides 19 ohms impedance at 100 MHz

Applications

• Flexible printed circuit boards
• Noise suppression on flat cables
• EMI filtering in compact electronic assemblies

Procurement Notes

Verify the specific impedance value and physical dimensions against the official datasheet before integration. Confirm RoHS compliance status and maximum operating temperature ratings match system requirements. Ensure the 4W810 material specification aligns with intended frequency performance needs.

Selection Notes

Select this component when space constraints require a low-profile EMI solution for flexible circuits. The 11 mm width and 0.5 mm thickness suit tight packaging environments. Consider the 19 ohm impedance characteristic for target noise frequencies. Validate thermal stability up to +125°C for operational safety.

Part Context

This part belongs to the WE-FLAT series from Würth Elektronik, which specializes in flat ferrite cores for flexible PCBs. The series addresses EMI issues in compact designs where traditional toroidal or snap-on cores are unsuitable due to size or flexibility requirements.

Replacement Considerations

Consult official Wurth Elektronik documentation for verified substitute part numbers within the WE-FLAT series or compatible alternative manufacturers.