74278042

Overview

The Würth Elektronik 74278042 is a flat ferrite core from the WE-FLAT series, designed for flexible printed circuit boards. It features an impedance of 23 ohms at 100 MHz and measures 13 mm in width with a thickness of 0.5 mm. The component operates within a temperature range of -40°C to +105°C and complies with RoHS standards.

Feature Summary

• Flat profile design specifically engineered for integration with flexible printed circuit boards
• Provides electromagnetic interference suppression through high-frequency impedance characteristics
• Compliant with RoHS environmental directives for general electronic equipment applications

Applications

• Electromagnetic interference suppression on flexible printed circuit boards
• Signal integrity enhancement in compact electronic assemblies
• General electronic equipment noise reduction

Procurement Notes

Verify the specific impedance value and physical dimensions against the official datasheet before procurement. Confirm that the component meets the required operating temperature range for the target application environment. Ensure compliance with relevant regulatory standards such as RoHS for the intended market.

Selection Notes

Select this component when space constraints require a low-profile solution for EMI suppression on flexible substrates. Consider the 23 ohm impedance rating at 100 MHz to ensure effective attenuation for the specific noise frequencies present in the circuit design.

Part Context

This part belongs to the WE-FLAT series of flat ferrite cores manufactured by Würth Elektronik. These components are distinct from traditional cylindrical snap-on cores due to their planar geometry, which facilitates mounting directly onto or alongside flexible circuits without adding significant bulk.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer for approved alternatives if this specific model is unavailable.