1、 IEC 62435-1 Edition 1.0 2017-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Electronic components Long-term storage of electronic semiconductor devices Part 1: General Composants lectroniques Stockage de longue dure des dispositifs lectroniques semiconducteurs Partie 1: Gnralits IEC 62435-1:2017-01
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19、s commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 62435-1 Edition 1.0 2017-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Electronic components Long-term storage of electronic semiconductor devices Part 1: General Composants lectroniques Stockage de lo
20、ngue dure des dispositifs lectroniques semiconducteurs Partie 1: Gnralits INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 31.020 ISBN 978-2-8322-3835-6 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electro
21、technique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 IEC 62435-1:2017 IEC 2017 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope 8 2 Normative ref
22、erences 8 3 Terms definitions and abbreviated terms . 8 3.1 Terms and definitions 8 3.2 Abbreviations 9 4 Purpose of long-term storage 9 4.1 General . 9 4.2 Storage decision criteria . 10 4.2.1 Advantages . 10 4.2.2 Hazards . 10 4.2.3 Storage cost 11 4.2.4 Decision criteria . 12 4.3 Reasons and meth
23、odology 12 4.4 Market forces 13 4.5 Risk mitigation and insurance . 13 4.6 Obsolescence mitigation . 13 5 Logistics 13 5.1 Procurement requirements 13 5.1.1 List of components 13 5.1.2 Quantity of components to be stored . 14 5.1.3 When is it worth keeping in stock? . 14 5.1.4 Procurement recommenda
24、tions . 14 5.2 Elementary storage unit 15 5.3 Stock management . 15 5.4 Redundancy 15 5.5 Storage regimen . 15 5.5.1 Storage concerns 15 5.5.2 Identification and traceability . 15 5.6 Removal from storage . 16 5.6.1 Precautions . 16 5.6.2 Stock rotation 16 5.7 Periodic check of the components . 16 5
25、.7.1 General . 16 5.7.2 Objectives . 17 5.7.3 Periodicity . 17 5.7.4 Tests during periodic check . 17 6 Storage considerations for devices after card (or other) attachment. 17 7 Handling 18 8 Inspection 18 9 Inventory control process . 18 10 Transportation . 18 11 Lead finishes . 18 12 Kitting and l
26、ot control . 18 IEC 62435-1:2017 IEC 2017 3 13 Validation 19 14 Unplanned storage and types of storage 19 14.1 Types of storage . 19 14.2 Unplanned storage 19 15 Other things to store in addition to the components . 20 15.1 Relevant data . 20 15.2 Equipment 20 16 Storage facility 20 16.1 Cost of own
27、ership . 20 16.2 Physical security and safety 20 16.3 Location and ambient environment 20 17 Policies . 21 17.1 General . 21 17.2 Supply chain . 21 17.3 Re-starting the manufacturing chain 21 18 Legislation and environmental issues 21 Annex A (informative) Example checklist for project managers 22 A
28、nnex B (normative) Example checklist for long-term storage facilities 24 Annex C (informative) Example of a component list . 26 C.1 Component list 26 C.2 Data description 27 Annex D (informative) Examples of periodic and/or de-stocking tests . 28 Annex E (informative) Parameters influencing the quan
29、tity of components to be stored 30 Bibliography 31 Table 1 Storage hazards 11 Table A.1 Example checklist for project managers . 22 Table B.1 Example checklist for storage facilities . 24 Table C.1 Component list . 26 Table D.1 Periodic and/or de-stocking tests . 28 4 IEC 62435-1:2017 IEC 2017 INTER
30、NATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRONIC COMPONENTS LONG-TERM STORAGE OF ELECTRONIC SEMICONDUCTOR DEVICES Part 1: General FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC
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41、ts. International Standard IEC 62435-1 has been prepared by IEC technical committee 47: Semiconductor devices. This standard cancels and replaces IEC/PAS 62435 published in 2005. This first edition constitutes a technical revision. The text of this standard is based on the following documents: FDIS
42、Report on voting 47/2326/FDIS 47/2349/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. IEC 62435-1:2017 IEC 2017 5 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all
43、 parts in the IEC 62435 series, published under the general title Electronic components Long-term storage of electronic semiconductor devices, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on
44、the IEC website under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 6 IEC 62435-1:2017 IEC 2017 INTRODUCTION This document applies to the long-term storage of electroni
45、c components. This is a document for long-term storage (LTS) of electronic devices drawing on the best long- term storage practices currently known. For the purposes of this document, LTS is defined as any device storage whose duration can be more than 12 months for product scheduled for long durati
46、on storage. While intended to address the storage of unpackaged semiconductors and packaged electronic devices, nothing in this standard precludes the storage of other items under the storage levels defined herein. Although it has always existed to some extent, obsolescence of electronic components
47、and particularly of integrated circuits, has become increasingly intense over the last few years. Indeed, with the existing technological boom, the commercial life of a component has become very short compared with the life of industrial equipment such as that encountered in the aeronautical field,
48、the railway industry or the energy sector. The many solutions enabling obsolescence to be resolved are now identified. However, selecting one of these solutions should be preceded by a case-by-case technical and economic feasibility study, depending on whether storage is envisaged for field service
49、or production, for example: remedial storage as soon as components are no longer marketed; preventive storage anticipating declaration of obsolescence. Taking into account the expected life of some installations, sometimes covering several decades, the qualification times, and the unavailability costs, which can also be very high, the solution to be adopted to resolve obsolescence should often be rapidly
