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Ferrite Rods

Ferrite Rods - R Series

  • AL( nH/Sq N) is the Al value. Required turn = square root of ( desired 'L' in nH / 'AL' in nh/SqN)
  • CWS ByteMark Part Number is the part number to use to place your purchase order
  • Length is the length of the ferrite rod
  • Material is the material type where you can look up its properties at or download these pdf files
  • U is the Permeability of the materials.


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We wind anything to meet your needs.

Download Entire Ferrite Technical
Data and Specifications
Additional Technical Data can be obtained from

Completely wound antenna and winding services can be obtained from


Please see pdf files for details. See link below for some sample PDF files.


Part Numbering


R : Ferrite Rod
037= Outside Diameter, OD ( In this case 0.37").
400= Length of the Ferrite Rod ( In this case 4").
61= Ferrite Rod Material Type

1) The prices shown below are for low volume quantity. Please call 
1-714-547-3276 or email for larger volume OEM pricing.
2) Note: Custom winding available!! Call CWS Coil Winding Specialist more information! 800 377-3244 .
Need help with your design ??. Please visit:

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Copyright © 2004, CWS ByteMark
Updated Aug 30, 2004