74271211S

Overview

The Würth Elektronik 74271211S is a hinged snap ferrite core from the STAR-TEC series, designed for rapid installation on cables. It features an inner diameter of 21 mm and utilizes 4W620 material composition. The component provides an impedance of 982 Ω at 1 MHz and 425 Ω at 100 MHz. External dimensions are 47 mm x 43 mm. It includes safety key technology to prevent accidental opening.

Feature Summary

• Hinged design with integrated safety key mechanism
• Rapid installation without cable disconnection
• High impedance performance in low frequency range

Applications

• Power cable EMI suppression
• Data line filtering
• General electronic equipment noise reduction

Procurement Notes

Verify the specific impedance requirements against application frequencies, as values vary significantly between 1 MHz and 100 MHz. Confirm that the 21 mm inner diameter accommodates the target cable bundle. Ensure compatibility with the required mounting environment and check for RoHS compliance documentation if mandated by project standards.

Selection Notes

Select this model when high attenuation is needed below 100 MHz. The 21 mm aperture suits larger cable assemblies compared to smaller STAR-TEC variants. Consider the physical size constraints due to the 47x43 mm footprint. The safety key feature adds security but may require specific clearance for closure.

Part Context

Part of the Würth Elektronik STAR-TEC family of split-core ferrites. These components offer a convenient alternative to traditional toroidal cores by eliminating the need to thread cables through the center. The series covers various diameters and materials to address diverse EMI/RFI suppression needs across industrial and consumer electronics.

Replacement Considerations

No public confirmed substitute part numbers identified.