Overview
IEC TS 62398:2004 - Ferrite cores – Technology Approval Schedule (TAS) defines the terms, symbols, quality system, and the test, assessment and verification methods relevant to the design, manufacture and supply of ferrite cores under the IECQ‑CECC Quality Assessment System for Electronic Components. Intended as a Technology Approval Schedule (TAS), it explains how manufacturers prepare a Technology Approval Declaration Document (TADD) and meet the general requirements for components of assessed quality, facilitating harmonized acceptance across IECQ‑CECC member countries.
Key topics and requirements
This Technical Specification covers the lifecycle and quality controls for ferrite core technology, including:
- Scope & terminology
- Definitions, units, symbols and preferred values specific to ferrite cores.
- Component technology definition
- Description of process scope, activities and a required technical abstract.
- Design and interfaces
- Requirements for component design flow, interfaces and documentation.
- Manufacture and assembly
- Process descriptions, equipment, rework rules, validation and subcontractor controls.
- Testing and verification
- Test procedures, equipment needs, product and process boundary verification.
- Process characterisation
- Identification and control of critical process characteristics.
- Packing, shipping and release
- Procedures for handling, release validity and traceability.
- Withdrawal of approval
- Conditions and procedures for rescinding Technology Approval.
Informative annexes provide production process flow charts, an example technical abstract and design flow charts to support practical implementation.
Practical applications and users
IEC TS 62398 is practical for organizations and professionals involved in the ferrite core supply chain:
- Ferrite core manufacturers - to prepare TADDs, align production and quality systems with IECQ‑CECC requirements, and obtain Technology Approval.
- Quality managers and process engineers - to define validation, process control and test regimes for cores.
- Test laboratories and inspectors - to align verification and assessment activities with the TAS framework.
- Purchasing/procurement teams - to specify vendor acceptance criteria for components of assessed quality.
- Certification bodies (IECQ‑CECC NAIs) - to assess conformance and grant internationally recognized certificates.
Use of IEC TS 62398 helps manufacturers demonstrate consistent quality, reduce duplication of testing across member countries, and facilitate international trade in magnetic components.
Related standards
IEC TS 62398 references and complements several IEC/ISO publications used for dimensions, terminology and test methods, for example:
These related standards are essential for correct application of the TAS and for detailed dimensional and test requirements.