"The Tape Wound Core Specialists"
MK Magnetics Inc
An ISO 9001:2008 Registered Firm
Data Sheets
Metglas AMCC to MKM Part No. Cross Reference
Metglas AMCC to MKM Dimensional Tolerances

Optifficient Core Series

Ultra Low Loss Amorphous Cores Utilizing Metglas® 2605SA1 Material

MK Magnetics' uniquely processed cores provide 30% lower loss than the competition. Optimized anneal, higher interlaminar resistance, and superior bond equal superior performance.

Ideal for Renewable Energy Applications:
PV & Wind Power

Optimized for low loss, high frequency gapped filters: Inverters & Converters.


  • Single and Multi-gapped C&E Cores
  • Single & Multi-gapped Toroids
  • AMCC-size equivalents
  • Custom shapes and sizes to 1000s of pounds
  • One-off to millions/year
  • 4-week typical starting lead times
  • Expedited prototypes available
  • Engineering design support

ISO 9001:2008 Registered
Manufactured in the USA.
Metglas® is a registered trademark of Metglas Inc.

Slitting Machine Center-Cut C-Core Toroidal Cores Three-Phase Tape Wound E-Cores
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