Common Mode Chokes (VITROPERM® Cores)

Nanocrystalline Common Mode Chokes: High Attenuation in Compact Designs

Common Mode Chokes are a well-proven measure against conductive common mode noise. The standard series from VACUMSCHMELZE GmbH & Co. KG are consequently designed with nanocrystalline VITROPERM cores in order to offer size optimized solutions with reliable operation in a wide temperature range.


Nanocrystalline cores feature a very high initial permeability which enables a high attenuation in the low frequency range with only a small number of turns. The resulting low winding capacity positively effects the attenuation behavior in the high frequency range. All in all, common mode chokes with nanocrystalline cores feature a distinctive broad-band behavior with almost temperature independent properties in a wide temperature range - this all in a very small component built.

1 and 3 phase chokes for different current and inductivity requirements are available in flat or up-right designs - also for different unbalnced current (differential mode current) imposition.

List of Standard Common Mode Chokes


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Quick Selector for Common Mode Chokes

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VAC CMC Quick Selector


Our customer-specific solutions supplement the standard series for industrial as well as for special applications.

Sample Kit "Common Mode Chokes"

The kit contains 24 selected chokes from the new UL 1446 standard series for 1, 3 and 4-phase applications, from 4 to 48 A and operational voltages between 300 and 1000 V. You can order this case from us.

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Download: Content of CMC Sample Kit


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