IEC 61163-2:2020

IEC 61163-2 ®
Edition 2.0 2020-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Reliability stress screening –
Part 2: Components
Déverminage sous contraintes –
Partie 2: Composants
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IEC 61163-2 ®
Edition 2.0 2020-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Reliability stress screening –

Part 2: Components
Déverminage sous contraintes –

Partie 2: Composants
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 03.120.01; 31.020 ISBN 978-2-8322-7910-6

– 2 – IEC 61163-2:2020 © IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Description of reliability stress screening (RSS) . 8
5 Types of RSS . 10
5.1 General . 10
5.2 Constant stress screening . 10
5.3 Step stress screening . 10
5.4 Highly accelerated stress screening (HASS) . 10
6 Managing RSS . 11
6.1 Planning . 11
6.2 Termination of RSS . 12
7 Design of RSS . 12
7.1 General . 12
7.2 Physics of failure . 12
7.3 Common screening procedures . 13
7.4 Characteristics of a well-designed screening procedure . 14
7.5 Screening evaluation . 14
7.6 Selection of samples . 14
7.7 Setting the duration of RSS . 15
8 Managing an RSS programme . 15
8.1 Resources . 15
8.2 Monitoring during RSS . 16
9 Analysis for RSS . 16
9.1 General . 16
9.2 Cost benefit analysis . 16
9.3 Identifying early failures . 16
9.4 Analysis of the outputs of RSS . 17
Annex A (informative) Data analysis . 18
A.1 Symbols . 18
A.2 Weibull analysis . 18
A.3 Design of a reliability stress screening . 19
Annex B (informative) Examples of applications of reliability stress screening
processes . 23
B.1 General . 23
B.2 Transformers . 23
B.3 Connectors . 25
Bibliography . 28

Figure A.1 – Estimation of η and β . 18
Figure A.2 – Nomograph of the cumulative binomial distribution (Larson) . 20
Figure A.3 – Example of a Weibull plot . 21

Figure B.1 – Weibull plot of the bump screening . 25
Figure B.2 – Weibull plot of the pull test . 27

Table 1 – Common screening types and typical defect types precipitated by RSS . 13
Table A.1 – RSS test results . 21
Table A.2 – Screening results for weak populations . 22

– 4 – IEC 61163-2:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RELIABILITY STRESS SCREENING –

Part 2: Components
FOREWORD
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