IEC？63093-8:20 18（E）规定了对于由铁氧体制成的E磁芯的优选范围的机械互换性重要的尺寸和与其一起使用的线圈形成器的基本尺寸，以及在涉及它们的计算中使用的有效参数值。它还给出了适用于E型芯的表面不规则性允许限值的指南。？ 本文件中包含的规范有助于铁氧体磁芯制造商和客户之间关于表面不规则性的谈判。附件中讨论了派生标准的使用，派生标准给出了零部件的更详细的规格，同时仍然允许符合本标准？A. 此版本包括以下与IEC相关的重大技术变化？62317--8:20 06和IEC？60424-3:2015: A.？本文档集成了IEC？62317-8:20 06和IEC？60424-3:2015; b.？桌子？4-IEC的E核芯片的允许面积？60424-3:20 15，已移至附件？本文件的C（信息性）。

IEC？63093-8:2018(E) specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of E-cores made of ferrite and the essential dimensions of coil formers to be used with them, as well the effective parameter values to be used in calculations involving them. It also gives guidelines on allowable limits of surface irregularities applicable to E-cores.？
The specifications contained in this document are useful in negotiations between ferrite core manufacturers and customers about surface irregularities. The use of derived standards, which give more detailed specifications of component parts while still permitting compliance with this standard, is discussed in Annex？A.
This edition includes the following significant technical changes with respect to IEC？62317--8:2006 and IEC？60424-3:2015:
a.？This document integrates IEC？62317-8:2006 and IEC？60424-3:2015;
b.？Table？4 – Allowable areas of chips for E-cores, of IEC？60424-3:2015, has been moved to Annex？C (informative) of this document.