DIN EN IEC 60401-1 E:2019-09 Terms and nomenclature for cores made of magnetically soft ferrites - Part 1: Terms used for physical irregularities and reference of dimensions
2021DIN EN IEC 60401-1:2021 Terms and nomenclature for cores made of magnetically soft ferrites - Part 1: Terms used for physical irregularities and reference of dimensions (IEC 60401-1:2020); German version EN IEC 60401-1:2020
1970DIN EN IEC 60401-1 E:2019-09 Terms and nomenclature for cores made of magnetically soft ferrites - Part 1: Terms used for physical irregularities and reference of dimensions
2005DIN EN 60401-1:2005 Terms and nomenclature for cores made of magnetically soft ferrites - Part 1: Terms used for physical irregularities (IEC 60401-1:2002); German version EN 60401-1:2005