VACUUMSCHMELZE GmbH & Co. KG (VAC) is one of the world's leading manufacturers of nanocrystalline cores, metallic materials and magnetic components made from these alloys. The unique combination of high permeability with very low losses of VAC's nanocrystalline (VITROPERM©), amorphous (VITROVAC©) and crystalline NiFe (ULTRAPERM©) alloys is the basis of the innovative VAC core range.

NEWS: Adams and VAC have combined resources to provide alternatives for Finemet cores. Download a copy of our Hitachi Finement core to VAC Vitroperm cross-reference tool.

nanocrystalline cores


Nanocrystalline Cores

VAC nanocrystalline cores offer linear hysteresis loop and high permeability compared to other magnetic cores. With over 30 years of experience manufacturing amorphous and nanocrystalline soft magnetic cores, VAC offers state of the art technology, quality and performance.


Common Mode Chokes with toroidal tape wound cores of VITROPERM allow the effective attenuation of asymmetrical and conducted high frequency noise. The high permeability of the nanocrystalline core material achieves superior characteristics at low and middle frequencies, as well as in the high frequency range, when an optimized winding arrangement is


chosen. In comparison to conventional ferrite, advantages over the entire frequency range are obtained.

Current Sensors

VAC offers five new current sensor series for PCB mounting in which the electronics is integrated (for more on VAC sensors, visit our VAC Current Sensors page). Three of the new series contain their own primary conductors; two series however are made with openings for passing through separate primary conductors. The patented VAC principle of the compensation sensor with magnetic probe as a zero field detector is

distinguished by maximum precision of the current detection.

Company Overview

Established in 1914, VACUUMSCHMELZE (VAC) designs, produces and markets advanced materials, including magnetic materials, and related products. VAC today operates in over 40 countries and is the holder of over 600 patents. The company is among the world's most highly innovative developers of advanced industrial materials.

VAC's range of products comprises a broad array of advanced semi-finished products, components, parts, modules and systems for use in a wide variety of fields and industries spanning watch-making and medical technology, regenerative energies, shipbuilding and

telecommunications, and the automotive and aviation industries.

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VAC's custom solutions are developed in close collaboration with the customer, reflecting the company's expertise in materials and state-of-the-art production technology of nanocrystalline cores.