74271111S

Overview

The Würth Elektronik 74271111S is a snap-on ferrite core from the STAR-TEC series, designed for electromagnetic interference suppression. It features a circular split design with a 5 mm inner diameter and an external length of 32.5 mm. The component utilizes 4W620 material to provide high impedance in the frequency range of 1 MHz to 1 GHz. Key electrical parameters include an impedance of 175 Ω at 25 MHz and 310 Ω at 100 MHz. It operates within a temperature range of -25 °C to +105 °C and complies with RoHS and REACH standards.

Feature Summary

• Snap-on hinged design allows for rapid installation on existing cables without disconnection
• Utilizes 4W620 ferrite material for effective broadband noise attenuation
• Complies with environmental directives including RoHS and REACH

Applications

• Suppression of common mode noise on power cables
• EMI reduction on computer data lines
• Noise filtering on general circuit board wiring

Procurement Notes

Verify the specific impedance values against the official datasheet, as distributor listings may vary between 175 Ω and 310 Ω at different frequencies. Confirm the package type is tray-based if required by assembly equipment. Ensure the 5 mm aperture matches the target cable diameter precisely to maintain optimal magnetic coupling and mechanical stability during operation.

Selection Notes

Select this model when a quick-install solution is required for cables up to 5 mm in diameter. The STAR-TEC series offers a balance of high impedance and physical durability. Consider the operating temperature range of -25 °C to +105 °C for environmental suitability. Compare internal dimensions against competitor parts to ensure fitment within constrained spaces.

Part Context

This component belongs to the Würth Elektronik STAR-TEC series, which specializes in snap-on ferrite cores for EMI suppression. The series provides various aperture sizes and impedance profiles to suit different cable diameters and frequency requirements. These cores are widely used in industrial and consumer electronics for compliance with electromagnetic compatibility regulations.

Replacement Considerations

Direct substitutes include other Wurth Elektronik STAR-TEC models with matching 5 mm apertures, such as 74271142S or 74271131S, though impedance characteristics differ. Cross-brand replacements must match the 5 mm inner diameter and similar external dimensions to ensure mechanical compatibility.