Core Gapping

Gapping involves removing material from a core (typically the cen

ter leg) to a specific dimensional or electrical tolerance.

Designers use gapped cores for a variety of reasons, including preventing core saturation, increasing reluctance, and controlling inductance.

Dexter provides

  • Large inventory of manufacturer “standard” gapped cores – click here to check out our inventory
  • Large inventory of un-gapped ferrite cores from various manufacturers including Magnetics, Inc, Ferroxcube, EPCOS/TDK, Fair-Rite Products and more.
  • Machining to electrical or mechanical specifications click here to see the different specifications
  • Lead times of 2 weeks or less when raw material is in stock. Dexter utilizes a cell manufacturing process to adjust its manufacturing capacity to meet customer demand. Urgent demands, small runs and prototypes, are often provided in 1 week or less.

Gapping is done by one of two methods, either traverse (sided to side) gapping or plunge (up to down) gapping.  Both methods can be controlled to +/-.0001” or to an electrical tolerance of 1% (dependent on core size)
When an application goes into higher volumes, Dexter will work with the you and manufacturer to develop the proper stocking package to meet your on time delivery needs.
As noted above, gapping can be done either to a physical dimension or a specified AL value and tolerance, but not both. Dexter has developed methodology to properly call out gapping to avoid confusion.

Access our Ferrite Gapping Calculator