EN 129202:1994

Overview

EN 129202:1994 - titled Blank Detail Specification: Wirewound inductors with ceramic or ferrite core - Assessment level P - is a CLC (European) standard that provides a template (blank detail specification) for defining requirements for wirewound inductors using ceramic or ferrite cores. The published document serves as a standardized framework that manufacturers, designers and procurers can use to specify and confirm quality and conformity for these electromechanical passive components. The standard has been adopted nationally (e.g., SIST EN 129202:2002 in Slovenia).

Key topics and requirements

While the EN text is a blank/detail template, typical topics and sections addressed or intended by this type of specification include:

• Scope and designation: identification of the component type (wirewound inductor) and core material (ceramic or ferrite).
• Mechanical details: drawing references, dimensions, mounting and termination styles.
• Electrical characteristics: nominal inductance, tolerance, DC resistance and rated current (to be filled in by the product-specific detail).
• Materials and construction: core material options (ceramic/ferrite), winding conductor, insulation and coating requirements.
• Testing and inspection: acceptance tests, electrical tests, visual/mechanical inspections and sample sizes tied to the assessment level.
• Marking and packaging: required labeling, traceability and packing methods for transport and storage.
• Assessment level P: indicates a defined level of quality confirmation or conformity assessment to be applied; the blank template lets users specify the actual verification and documentation required.

Note: EN 129202 is a framework document (blank specification). Exact numeric values, testing procedures and tolerances are intended to be set when filling in the detail specification for a particular component or product family.

Applications and users

This standard is practical for:

• Component manufacturers creating customer-specific datasheets and product specifications for wirewound inductors.
• Design and electronics engineers who need a consistent basis for specifying inductors with ceramic or ferrite cores in power supplies, filters, RF circuits and other circuits.
• Purchasing and quality assurance teams verifying supplier conformity and managing acceptance tests.
• Test laboratories and certification bodies that evaluate conformity when a filled-in detail specification is provided.

Using EN 129202 helps ensure clarity in procurement, repeatability in manufacturing and consistency in quality confirmation for wirewound inductors.

Related standards

For complete compliance and interoperability, users often consult other EN/CENELEC standards covering passive components, test methods and conformity assessment procedures. Search keywords: EN 129202, wirewound inductors, ferrite core, ceramic core, blank detail specification, assessment level P.