Overview
IEC 61163-2:1998, titled Reliability Stress Screening – Part 2: Electronic Components, is an international standard published by the International Electrotechnical Commission (IEC). The document provides comprehensive guidance on the techniques and procedures essential for conducting reliability stress screening (RSS) on electronic components. Developed by IEC Technical Committee 56 on Dependability, this standard targets component manufacturers, users, and subcontractors involved in stress screening activities to ensure enhanced reliability and quality of electronic components.
RSS serves as a critical methodology to identify latent defects and manufacturing faults, thereby helping achieve near-zero defect levels in new products. While traditionally used for systems operating under extreme environmental conditions, RSS has become a mainstream quality assurance practice in electronic component manufacturing and usage.
Key Topics
This standard covers key aspects of the reliability stress screening process, including but not limited to:
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Scope and Definitions
Clarifies the applicability of RSS for electronic components and introduces essential terminology aligned with IEC vocabularies such as IEC 60050.
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Procedure for Stress Screening
Outlines step-by-step processes including:
- Program definition and planning
- Establishing communication between stakeholders
- Identification of potential failure modes and defects
- Selection of appropriate stress types, levels, and sequencing designed to precipitate failures
- Determining the duration and conditions of stress application
- Mathematical analysis of test data and failure trends
- Failure mode analysis to refine processes
- Implementation of corrective action loops
- Criteria for acceptance or rejection of components
- Feedback mechanisms to component manufacturers for continuous improvement
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Failure Mechanism Identification Tools
Annex A provides informative examples of tools used to analyze failure mechanisms in components.
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Data Analysis Techniques
Annex B discusses methods for interpreting test data acquired during RSS to draw meaningful reliability conclusions.
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Application Examples
Annex C illustrates practical implementations of reliability stress screening processes in various electronic component use cases.
Applications
IEC 61163-2 is invaluable for several practical scenarios:
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Component Manufacturers:
Use as a guideline to design and implement stress screening procedures that detect defects early, ensure tighter quality control, and improve product reliability before market release.
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Component Users (OEMs and System Integrators):
Leverage the standard to negotiate stress screening requirements with suppliers or to establish in-house RSS processes aligned with system reliability goals. This helps mitigate risks associated with component failures in critical applications such as aerospace, automotive, telecommunications, and defense electronics.
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Third-Party Subcontractors:
Adopt this standard to provide reliability stress screening as a service compliant with international norms, ensuring credibility and quality assurance for client components.
The standard emphasizes that RSS should not be seen as a substitute for sound manufacturing controls-it is more effective as a complementary tool for improving system-level reliability and screening out weaker components. It also highlights logistics considerations for maintaining consistent component supply with similar stress screening treatments over a system’s lifetime.
Related Standards
For comprehensive understanding and implementation of IEC 61163-2, the following related IEC standards are recommended:
- IEC 60050 – International Electrotechnical Vocabulary (provides definitions and terminology pertinent to electrical and electronic engineering).
- IEC 60027 – Letter Symbols to be Used in Electrical Technology (for standard graphical and letter symbols).
- IEC 60417 – Graphical Symbols for Use on Equipment (consistent symbols for equipment markings).
- IEC 60617 – Graphical Symbols for Diagrams (used in circuit diagrams and documentation).
- Other Reliability and Dependability Standards by IEC Technical Committee 56, which covers broader dependability topics including testing and evaluation methodologies for electronic components and systems.
Keywords: IEC 61163-2, reliability stress screening, electronic components, IEC standard, component manufacturers, failure mode analysis, stress screening procedure, quality assurance, dependability, electronic device reliability, IEC 60050, stress testing, corrective action process, defect detection.