74271112S

Overview

The Wurth Elektronik 74271112S is a snap-on ferrite core from the STAR-TEC series, designed for electromagnetic interference suppression. It features a black housing with an internal diameter of 10 mm and single opening configuration. The component utilizes 4W620 ferrite material, providing an impedance of 176 Ω at 25 MHz and 380 Ω at 100 MHz. Physical dimensions are 39.5 mm in length, 24.5 mm in width, and 21.5 mm in height. It operates within a temperature range of -25°C to +105°C and complies with REACH and RoHS standards.

Feature Summary

• Incorporates safety key technology to prevent unauthorized removal after installation on cables.
• Utilizes high-performance 4W620 ferrite material for effective broadband noise attenuation.
• Features a snap-on design allowing for rapid manual installation without tools.

Applications

• Electromagnetic interference suppression in general electronic equipment.
• Noise filtering for safety-related applications requiring secure cable retention.
• Signal integrity enhancement for data and power lines in industrial settings.

Procurement Notes

Verify the specific suffix 'S' indicates the inclusion of the safety key mechanism, as this distinguishes it from standard snap cores. Confirm that the 4W620 material grade matches the required frequency response for the target application. Ensure compliance with REACH and RoHS directives is documented for the specific batch. Check that the 10 mm inner diameter accommodates the cable bundle size without excessive force during installation.

Selection Notes

Select this model when both high impedance performance and physical security against accidental disconnection are required. The 10 mm aperture suits medium-sized cable bundles. Compare impedance values at 25 MHz and 100 MHz against other STAR-TEC variants to ensure adequate noise absorption. Consider the operating temperature range of -25°C to +105°C for environmental suitability. Verify that the safety key feature is necessary for the assembly process.

Part Context

This component belongs to the Würth Elektronik STAR-TEC Snap series, which specializes in ferrite cores with integrated locking mechanisms. The series offers various inner diameters and materials to address different cable sizes and frequency requirements. The 74271112S specifically addresses the need for tamper-resistant EMI suppression in environments where cable integrity is critical.

Replacement Considerations

Standard snap-on ferrites lacking the safety key mechanism may serve as functional substitutes if security is not required. Other Wurth Elektronik models with identical 10 mm apertures and similar impedance profiles can be considered if the safety key is dispensable. Verify dimensional compatibility and material properties before substitution.

FAQ

What is the function of the safety key in the 74271112S?

The safety key prevents the ferrite core from being opened or removed once snapped shut around a cable, ensuring the EMI suppression remains intact and tamper-proof.

What ferrite material is used in this component?

The 74271112S uses 4W620 ferrite material, which provides specific impedance characteristics optimized for broadband noise suppression.