TDK Electronics · TDK Europe

Product Brief

Ferrites and Accessories – Distributed Air Gaps in Ferrite Cores – E, EQ, ER, ETD, PM, PQ Cores

 Ferrites Air Gaps PB


Single air gaps are a common technique to delay the core saturation and to increase the power handling capability. However, a single large air gap leads to a high fringing flux effect.

  • TDK offers a core manufacturing technique of distributed air gaps that significantly reduces the fringing flux effect in order to reduce electromagnetic emissions and heating.
  • This technical solution is available or may be manufactured for E, EQ, ER, ETD, PM and PQ cores
  • Distributed air gaps are used in the design of power chokes and flyback converters.
  • TDK manufactures ferrite cores with distributed air gaps to provide the marketplace with an economical solution focusing on higher efficiency and downsizing.

Edition 05.18, 4 pages, English

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