Wurth Elektronik Openable, Diameter 27 mm Ferrite Sleeve, Apertures: 1 Key 20 mm 44 mm 55 mm, For Internal, External

This ferrite sleeve is a clamp-on EMI suppression component designed to reduce common-mode interference on cable assemblies. It is manufactured from a 4W620 ferrite material and includes a keyed snap mechanism to secure it around conductors. The device provides impedance across a broad RF range, enabling improved signal integrity in electronic systems where suppression of conducted noise is required.

• 54Ω impedance at 25MHz reduces low-frequency conducted interference
• 112Ω impedance at 100MHz attenuates higher-frequency noise
• Snap-on keyed design allows tool-free installation
• Clamp-style construction enables retrofitting to existing cables
• Ferrite composition tailored for EMI/RFI attenuation performance

• Suitable for suppression on power and data cable runs
• Ideal for reducing interference in control panels
• Used with harnesses in industrial electronic equipment
• Can be used for noise reduction near sensitive receivers
• Appropriate for retrofit EMC mitigation on installed wiring

It incorporates a keyed snap mechanism that locks the two halves together to maintain position on a cable.

The impedance increases with frequency, providing greater attenuation of higher-frequency interference while still offering suppression at lower RF bands.

The part is formed from 4W620 ferrite, selected for its magnetic properties that convert unwanted electrical noise into heat within the material.

Yes, the clamp-style snap design permits installation around existing conductors without the need to reterminate connections.