DIN EN IEC 60401-1:2021-08
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 / Note: DIN EN 60401-1 (2005-08) and DIN EN 60401-2 ...