EN 129201:1994

Overview

EN 129201:1994 - adopted as SIST EN 129201:2002 - is a blank detail specification published by the CLC for wirewound inductors with ceramic or ferrite core, identified under ICS 31.220.99 (other electromechanical components). The document provides a standardized template for defining product-specific requirements and conformity assessment at Assessment level E. It is intended as a framework to help manufacturers, purchasers and conformity bodies specify, evaluate and document wirewound inductors built on ceramic or ferrite cores.

Key Topics

The standard focuses on the structure and content of a detail specification for wirewound inductors. Key technical topics typically covered in such a blank specification include:

• Product definition and designation (type, core material: ceramic or ferrite, winding style)
• Electrical characteristics (inductance, rated current, DC resistance, self-resonant frequency)
• Mechanical and dimensional requirements (size, mounting, tolerances)
• Materials and construction (core material properties, insulation, leads)
• Quality and inspection (production inspection, sampling, acceptance criteria)
• Testing and verification (electrical and environmental tests to be specified by the purchaser)
• Marking, documentation and traceability (labeling, datasheets, test reports)
• Conformity assessment at Assessment level E, indicating the intended level of quality assurance and verification activities to be detailed in the specification

Note: EN 129201 is a blank (template) specification, so individual product or purchase specifications would fill in the precise values and test methods.

Applications

This standard is practical for:

• Manufacturers who need a consistent template to define product specifications for wirewound inductors with ceramic or ferrite cores.
• OEMs and design engineers specifying inductors for electronic and electromechanical assemblies.
• Procurement and purchasing teams creating technical purchase specifications and contracts.
• Testing laboratories and conformity assessment bodies that evaluate compliance according to purchaser-defined requirements.
• Quality managers who integrate standard-based specification elements into quality systems.

Using EN 129201 helps ensure clear, repeatable requirements for electrical performance, mechanical fit and quality documentation - improving interoperability and reducing disputes between suppliers and customers.

Related Standards

• Identified under ICS: 31.220.99 (Other electromechanical components)
• Adopted nationally as SIST EN 129201:2002 (Slovenia)
• For complete test methods and performance criteria, refer to other EN/IEC standards covering inductors, magnetic materials and electrical component testing.