IEC 63093-5:2025
Collections
International IEC standards
Publication date
December 2025
Number of pages
15 p.
Reference
IEC 63093-5:2025
IEC 63093-5:2025
December 2025
International standard
Current
Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 5: EP-cores and associated parts for use in inductors and transformers
IEC 63093-5:2025 specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of EP-cores made of ferrite, the essential dimensions of coil formers to be used with them and the locations of their terminal pins on a 2,50 mm printed wiring grid in relation to the base outlines of the cores and the effective parameter values to be used in calculations involving them. It also gives guidelines on allowable limits of surface irregularities applicable to EP-cores. The specifications contained in this document are useful in negotiations between ferrite core suppliers and users about surface irregularities. The general considerations upon which the design of this range of cores is based are as given in Annex A.This edition includes the following significant technical changes with respect to the previous edition:a) revision of Table 2 according to IEC 60205:2016.
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Sumary
Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 5: EP-cores and associated parts for use in inductors and transformers
IEC 63093-5:2025 specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of EP-cores made of ferrite, the essential dimensions of coil formers to be used with them and the locations of their terminal pins on a 2,50 mm printed wiring grid in relation to the base outlines of the cores and the effective parameter values to be used in calculations involving them. It also gives guidelines on allowable limits of surface irregularities applicable to EP-cores. The specifications contained in this document are useful in negotiations between ferrite core suppliers and users about surface irregularities. The general considerations upon which the design of this range of cores is based are as given in Annex A.
This edition includes the following significant technical changes with respect to the previous edition:
a) revision of Table 2 according to IEC 60205:2016.
IEC 63093-5:2025 specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of EP-cores made of ferrite, the essential dimensions of coil formers to be used with them and the locations of their terminal pins on a 2,50 mm printed wiring grid in relation to the base outlines of the cores and the effective parameter values to be used in calculations involving them. It also gives guidelines on allowable limits of surface irregularities applicable to EP-cores. The specifications contained in this document are useful in negotiations between ferrite core suppliers and users about surface irregularities. The general considerations upon which the design of this range of cores is based are as given in Annex A.
This edition includes the following significant technical changes with respect to the previous edition:
a) revision of Table 2 according to IEC 60205:2016.
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Replaced standards
(1)
IEC 63093-5:2018
June 2018
International standard
Cancelled
Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 5: EP-cores and associated parts for use in inductors and transformers
IEC 63093-5:2018 specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of EP-cores made of ferrite, the essential dimensions of coil formers to be used with them and the locations of their terminal pins on a 2,50 mm printed wiring grid in relation to the base outlines of the cores and the effective parameter values to be used in calculations involving them. It also gives guidelines on allowable limits of surface irregularities applicable to EP-cores. The specifications contained in this document are useful in negotiations between ferrite core manufacturers and users about surface irregularities. The general considerations upon which the design of this range of cores is based are as given in Annex A. This edition includes the following significant technical changes with respect to IEC 62317-5:2015: a. addition of the limits of surface irregularities.
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