74272475

Overview

The Würth Elektronik part number 74272475 is a flat snap ferrite core from the STAR-FLAT series, designed for electromagnetic interference suppression. It features a grey housing constructed from 4W620 material and incorporates Safety Key technology to ensure secure closure. The component provides an impedance of 114 ohms at 100 MHz and 42 ohms at 25 MHz. Its physical dimensions are 63.5 mm in length, with a rectangular cross-section measuring 19.8 mm by 12.8 mm. The inner diameter accommodates cables up to 12.8 mm.

Feature Summary

• Incorporates Safety Key technology to guarantee secure closure and maintain electromagnetic compatibility integrity
• Utilizes 4W620 magnetic material optimized for broadband noise suppression applications
• Features a flat snap design allowing for rapid installation on existing cable assemblies without disconnection

Applications

• Suppression of electromagnetic interference on data and power cables
• Enhancement of electromagnetic compatibility in electronic enclosures
• Noise filtering for high-speed signal lines in industrial equipment

Procurement Notes

Verify the specific suffix designation when ordering, as variations exist within the STAR-FLAT family. Confirm that the required impedance profile matches the 4W620 material characteristics at your operating frequency. Ensure the cable diameter falls within the 12.8 mm inner diameter limit. Check for compliance with relevant environmental standards if applicable to your final product assembly.

Selection Notes

Select this component when a low-profile solution is required for cable bundles or single thick wires. The flat geometry allows for mounting in confined spaces where round cores cannot fit. Consider the 114 ohm impedance at 100 MHz for typical digital noise frequencies. Evaluate the mechanical retention provided by the Safety Key feature against standard snap-fit alternatives for critical safety applications.

Part Context

This part belongs to the STAR-FLAT series of split ferrite cores manufactured by Würth Elektronik. Unlike the STAR-RING or STAR-TEC series which may use different materials or shapes, the STAR-FLAT line focuses on flat profiles for space-constrained environments. The 4W620 material composition distinguishes it from other series using different ferrite blends, offering specific permeability characteristics for general EMI suppression.

Replacement Considerations

Direct substitutes include Würth Elektronik part numbers 7427247 (standard STAR-FLAT) and 74272475 variants with identical keying. Cross-brand replacements require matching the 12.8 mm inner diameter and 114 ohm impedance at 100 MHz. Verify that any alternative also includes a locking mechanism if security against accidental opening is required.