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IEC 63093-4:2026

Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 4: RM-cores

Standard Details

IEC 63093-4:2026 specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of RM-cores and low-profile RM-cores made of ferrite, and the locations of their terminal pins on a 2,54 mm printed wiring grid in relation to the base outlines of the cores. It also gives guidance on allowable limits of surface irregularities applicable to RM-cores in accordance with the relevant generic specification. The selection of core sizes for this document is based on the philosophy of including those sizes which are industrial standards, either by inclusion in a national standard, or by broad-based use in industry. This document is a specification useful in the negotiations between ferrite core manufacturers and customers about surface irregularities. The general considerations that the design of this range of cores is based upon are given in Annex A.
This edition includes the following significant technical changes with respect to the previous edition:
a) revision of Table 3 and Table 4 according to IEC 60205 ED4.

General Information

Status : ACTIVE
Standard Type: Main
Document No: IEC 63093-4:2026
Document Year: 2026
Pages: 31
Edition: 2.0
  • Section Volume:
  • TC 51 Magnetic components, ferrite and magnetic powder materials

Life Cycle

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IEC 63093-4:2026
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