IEC 61360-5 Standard Data Element Types with Associated Classification Scheme – TNLab

IEC 61360-5 is part of the multi-part IEC 61360 standard series that provides a comprehensive framework for the definition and classification of standard data element types (DETs) used in electronic component data dictionaries. Published in 2004, this part specifically addresses the templates and format for defining data element types within a classification scheme, enabling consistent and unambiguous exchange of component data between suppliers, manufacturers, and users across the electronics industry. The standard is closely aligned with ISO 13584 (PLIB — Parts Library) and uses an EXPRESS-based information model as defined in ISO 10303-11 (STEP). The IEC 61360 series forms the backbone of electronic component information standardization, supporting applications such as automated component selection, supply chain management, CAD library generation, and product lifecycle management. Part 5 provides the template definitions that ensure data element types are described with sufficient rigor for automated processing while remaining human-readable.

IEC 61360-5 defines a rigorous template structure for each data element type (DET) within a classification scheme. Each DET template includes: (1) Identifier — a unique code within the classification scheme hierarchy (e.g., AAB123 for a specific voltage rating DET); (2) Name and definition — a human-readable name and precise definition of the property being described; (3) Data type — specification of the value domain, which may be a numerical type with units (e.g., Real in volts), an enumerated list of predefined values (e.g., THT, SMT, BGA for mounting type), a string with pattern constraint, or a reference to another DET; (4) Unit of measure — for numerical DETs, the SI unit or derived unit must be specified; (5) Classification level — indicating the level in the classification hierarchy where the DET is applicable (e.g., component class, family, or generic); (6) Constraints — value ranges, tolerances, or conditional relationships to other DETs. The template also includes metadata such as version number, effective date, and source organization.

The practical application of IEC 61360-5 extends throughout the electronics supply chain. Component manufacturers use the standard template format to create data sheets for their products in a machine-readable form. These data sheets can be directly imported into component management systems, CAD libraries, and procurement platforms without manual data re-entry. The classification scheme hierarchy allows engineers to search for components by functional characteristics rather than just manufacturer part numbers — for example, finding all resistors with tolerance ±0.1% and temperature coefficient ±25 ppm/°C regardless of manufacturer. The standard has been adopted by major component database initiatives, including the IEC Common Data Dictionary (IEC CDD), the ECISS (European Component Information Sharing System), and various national component information systems. For engineers designing complex electronic systems, access to standardized component data reduces design errors, accelerates component selection, and simplifies the process of finding alternative sources for critical components.