This part of IEC 61360 specifies within two dictionaries: - the definitions of data element types for electric components and materials used in electrotechnical equipment and systems;- the definitions of the component classes with associated classification scheme. These definitions are related to electric components including electronic and electromechanical components and materials used in electrotechnical equipment and systems. The object of this standard is to provide a set of uniquely-identified data element types with - an unambiguously defined meaning; - a defined value format, and - a prescribed value domain for the non-quantitative data element types. The classification scheme for components, the component class definitions (whereby the relevant and the valid characteristic properties by specific data element types are assigned to each class of components) are used to define the data element types unambiguously and to make the entire set of data element types manageable.The collection of data element types from this standard are meant for use in computerized systems for component selection and component management, parts list processing and computer-aided design, -manufacturing and -testing.