Soft magnetic cores
arrow_backTo the overviewAMORPHOUS & NANOCRYSTALLINE TAPE-WOUND TOROIDAL AND C-CORES
Tape-wound cores are made from softmagnetic metallic thin tapes. They feature the highest permeabilities and an excellent temperature stability.
Cores from crystalline NiFe-alloys (ULTRAPERM®) are used at low to medium frequencies. Amorphous (VITROVAC®) and especially nanocrystalline alloys (VITROPERM®) however are attractive options against ferrites at higher frequencies for many applications.
The toroidal shape is due to the the evenly distribution of the magnetic flux ideal for soft magnetic cores as the magnetic properties are not degraded by geometrical influences. Consequently, toroidal shapes are often used in combination with gigh grade magnetic alloys. Nanocrystalline Fe-based alloys have turned out to be of special interest as they combine excellent magnetic properties with reasonable costs, a very good temperature stability and favorabgle frequency properties.
NiFe and SiFe Tape-Wound Cores
Tape-wound cores from softmagnetic metallic thin NiFe tapes have been used over decades for several high-tech applications. Meanwhile most of the NiFe cores have been replaced by more modern nanocrystalline cores.
Therefore Vacuumschmelze GmbH & Co. KG has practically stopped the production of traditional NiFe tape-wound cores and discontinued all core types. This concerns alloys like:
- MUMETALL
- VACOPERM 100
- ULTRAPERM F
- ULTRAPERM Z
- PERMAX M
- PERMENORM 5000 Z22, 5050 H4, 5000 ZE
- MEGAPERM 40L
In most cases amorphous or preferably nanocrystalline cores can be used as a replacement. We are pleased to discuss the options with you.
The discontinuation concerns also components with these cores. Please contact us for details.
Main applications for tape-wound cores are Common Mode Chokes, precise Current Transformers, fast Pulse Transformers, Power Transformers and Magnetic Amplifiers.
Please see also: "Notes on part number and fixation" PDF 1,74 MB
at link
https://www.sekels.de/fileadmin/PDF/Englisch/21_Tables_of_VP_and_VC_standard_core_series.pdf
This product is added by:
SEKELS GmbH
MAGNETIC MATERIALS, COMPONENTS AND SYSTEMS
SEKELS GmbH We are specialists in magnetic fields, magnetic materials, ring-shaped cores, magnetic systems and magnetic shielding - from guidance to delivery of finished components and systems.
Sekels GmbH in Ober-Mörlen, Germany
SEKELS GmbH develops, manufactures and sells technical products in the field of magnetism. With approx. 27 employees (almost half of whom are physicists and engineers) help more than 600 customers worldwide.
As a dealer for VACUUMSCHMELZE GmbH & Co. KG, we can offer our customers both an extensive stock of semi-fini