74271131

Overview

The Würth Elektronik 74271131 is a snap-on ferrite core from the STAR-TEC series, designed for rapid installation on cables. It features a square housing with an internal diameter of 7.5 mm and a single opening. The component utilizes 4W620 material to provide impedance values of 180 Ω at 25 MHz and 310 Ω at 100 MHz. Physical dimensions are 40.5 mm in width, 21 mm in height, and 24.5 mm in depth. It operates within a temperature range of -25 °C to +105 °C and complies with REACH and RoHS standards.

Feature Summary

• Snap-on design enables quick manual installation without tools
• Square housing structure provides stable cable retention
• Utilizes 4W620 ferrite material for effective high-frequency noise suppression

Applications

• Safety-related applications requiring EMI reduction
• General electronic equipment noise filtering
• Cable harness interference mitigation

Procurement Notes

Verify the specific impedance rating required for your frequency band, as datasheets may list values at different test frequencies such as 25 MHz or 100 MHz. Confirm that the target cable diameter fits within the 7.5 mm inner diameter specification. Ensure compliance with REACH and RoHS directives is necessary for your region. Check for any lead-free (LFS) variants if soldering proximity is a concern, although this part is typically used on cabling.

Selection Notes

Select this component when a snap-on solution is preferred over split cores for faster assembly. The 7.5 mm aperture suits medium-sized power or signal cables. Choose based on the required impedance profile at your operating frequency; higher frequencies benefit from the 310 Ω characteristic. Consider the operating temperature range up to 105 °C for industrial environments. Compare physical footprint constraints against the 40.5 x 21 x 24.5 mm dimensions.

Part Context

This part belongs to the Würth Elektronik STAR-TEC series, which specializes in snap-on ferrite cores for easy cable management. The series offers various inner diameters and materials to address different noise suppression needs. The 74271131 specifically targets applications requiring moderate cable clearance with robust mechanical retention in a compact square form factor.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.