This International Standard specifies the dimensions that are of importance for mechanical interchangeability for ETD-cores made of ferrite, the essential dimensions of coil formers to be used with them, and the effective parameter values to be used in calculations involving them.
DIN EN 61185:2006 history
2016DIN EN 62317-6:2016 Ferrite cores - Dimensions - Part 6: ETD-cores for use in power supplies (IEC 62317-6:2015); German version EN 62317-6:2016
2006DIN EN 61185:2006 Ferrite cores (ETD-cores) intended for use in power supply applications - Dimensions (IEC 61185:2005); German version EN 61185:2005