Obsolescence management

IEC 62402:2019 provides requirements and guidance for obsolescence management applicable to any organization that is dependent on another organization to obtain value from the usefulness of the items that it provides. A cost-effective obsolescence management process and the activities used to implement the process are applicable throughout all phases of an item’s life cycle. This document covers the following areas: • establishing an obsolescence management policy; • establishing an infrastructure and an organization; • developing an obsolescence management plan (OMP); • developing strategies to minimize obsolescence during design; • determining an obsolescence management approach; • selecting obsolescence resolution and implementation; • measuring and improving the performance of the outcomes of the obsolescence management activities. Guidance on obsolescence management is included as notes, in the informative annexes and references in the Bibliography. This second edition cancels and replaces the first edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) this document has now been written with requirements as a standard, not a guide; b) this document continues to have guidance in the informative annexes; c) this document has been written as a general process for all technologies and items. Keywords: obsolescence management

Obsoleszenzmanagement

Gestion de l'obsolescence

IEC 62402:2019 fournit des exigences et des recommandations relatives à la gestion de l'obsolescence qui s'appliquent à toute organisation faisant appel à une autre organisation pour tirer parti des entités fournies par cette dernière. Un processus rentable de gestion de l'obsolescence ainsi que les activités de mise en œuvre de ce processus s'appliquent à chaque phase du cycle de vie d'une entité. Le présent document couvre les points suivants: • l'établissement d'une stratégie de gestion de l'obsolescence; • l'établissement d'une infrastructure et d'une organisation; • le développement d'un plan de gestion de l'obsolescence; • le développement de stratégies visant à réduire le plus possible l'obsolescence au cours de la conception; • l'identification de l'approche de gestion de l'obsolescence à adopter; • le choix et la mise en œuvre de la résolution de l'obsolescence; • la mesure et l'amélioration des performances des activités de gestion de l'obsolescence. Des recommandations relatives à la gestion de l'obsolescence sont incluses sous forme de notes, dans les annexes informatives et dans la Bibliographie.Cette deuxième édition annule et remplace la première édition parue en 2007. Cette édition constitue une révision technique. Cette édition comprend les modifications techniques majeures suivantes par rapport à l'édition précédente: a) le présent document a été réécrit pour se conformer aux exigences d'une norme et non d'un guide; b) le présent document contient toujours des recommandations dans ses annexes informatives; c) le présent document a été rédigé pour servir de processus général pour l'ensemble des technologies et entités. Mots clés : gestion de l'obsolescence

Upravljanje zastarelosti (IEC 62402:2019)

Ta dokument podaja zahteve in smernice za upravljanje zastarelosti, ki se uporabljajo za katero koli organizacijo, ki je odvisna od druge organizacije za pridobivanje vrednosti o uporabnosti elementov, ki jih zagotavlja. Stroškovno učinkovit proces upravljanja zastarelosti in dejavnosti za uvedbo postopka se uporabljajo skozi vse stopnje življenjske dobe elementa:
Ta dokument zajema naslednja področja:
• vzpostavitev politike upravljanja zastarelosti;
• vzpostavitev infrastrukture in organizacije;
• vzpostavitev načrta upravljanja zastarelosti (OMP);
• razvoj strategij za zmanjšanje zastarelosti med zasnovo;
• določanje pristopa upravljanja zastarelosti;
• izbira reševanja in uvedbe zastarelosti;
• merjenje in izboljšanje rezultatov dejavnosti upravljanja zastarelosti.
Smernice glede upravljanja zastarelosti so kot opombe vključene v informativnih dodatkih in referencah v bibliografiji.

General Information

Status
Published
Publication Date
11-Jul-2019
Technical Committee
Drafting Committee
Current Stage
6060 - Document made available
Due Date
12-Jul-2019
Completion Date
12-Jul-2019

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SLOVENSKI STANDARD
SIST EN IEC 62402:2019
01-oktober-2019
Nadomešča:
SIST EN 62402:2008
Upravljanje zastarelosti (IEC 62402:2019)
Obsolescence management (IEC 62402:2019)
Obsoleszenzmanagement (IEC 62402:2019)
Gestion de l'obsolescence (IEC 62402:2019)
Ta slovenski standard je istoveten z: EN IEC 62402:2019
ICS:
21.020 Značilnosti in načrtovanje Characteristics and design of
strojev, aparatov, opreme machines, apparatus,
equipment
SIST EN IEC 62402:2019 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 62402:2019
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SIST EN IEC 62402:2019
EUROPEAN STANDARD EN IEC 62402
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2019
Supersedes EN 62402:2007 and all of its amendments
ICS 21.020
and corrigenda (if any)
English Version
Obsolescence management
(IEC 62402:2019)
Gestion de l'obsolescence Obsoleszenzmanagement
(IEC 62402:2019) (IEC 62402:2019)

This European Standard was approved by CENELEC on 2019-07-03. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 62402:2019 E
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SIST EN IEC 62402:2019
EN IEC 62402:2019 (E)
European foreword

The text of document 56/1838/FDIS, future edition 2 of IEC 62402, prepared by IEC/TC 56 "Dependability" was

submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 62402:2019.

The following dates are fixed:

• latest date by which the document has to be implemented at national level by (dop) 2020-04-03

publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2022-07-03

document have to be withdrawn

This document supersedes EN 62402:2007 and all of its amendments and corrigenda (if any).

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice

The text of the International Standard IEC 62402:2019 was approved by CENELEC as a European Standard

without any modification.
IEC 60300-1 NOTE Harmonized as EN 60300-1
IEC 62239-1 NOTE Harmonized as EN IEC 62239-1
IEC/ISO 31010 NOTE Harmonized as EN 31010
IEC 62474 NOTE Harmonized as EN IEC 62474
IEC 62668-1 NOTE Harmonized as EN 62668-1
IEC 62435-1 NOTE Harmonized as EN 62435-1
IEC 62435-4 NOTE Harmonized as EN IEC 62435-4
IEC 62668-2 NOTE Harmonized as EN IEC 62668-2
Under preparation. Stage at the time of publication: prEN 62668-1
Under preparation. Stage at the time of publication: FprEN IEC 62668-2
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SIST EN IEC 62402:2019
IEC 62402
Edition 2.0 2019-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Obsolescence management
Gestion de l'obsolescence
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 21.020 ISBN 978-2-8322-6960-2

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 agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN IEC 62402:2019
– 2 – IEC 62402:2019 © IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 5

INTRODUCTION ..................................................................................................................... 7

1 Scope .............................................................................................................................. 8

2 Normative references ...................................................................................................... 8

3 Terms, definitions and abbreviated terms ........................................................................ 8

3.1 Terms and definitions .............................................................................................. 8

3.2 Abbreviated terms ................................................................................................. 11

4 Obsolescence management ........................................................................................... 12

4.1 What is obsolescence ........................................................................................... 12

4.2 What is obsolescence management ...................................................................... 13

4.3 Benefits of obsolescence management ................................................................. 13

4.4 Obsolescence management process ..................................................................... 14

5 Obsolescence management policy ................................................................................. 17

6 Infrastructure and organization ...................................................................................... 18

6.1 General ................................................................................................................. 18

6.2 Management responsibilities ................................................................................. 18

6.3 Obsolescence management organization .............................................................. 18

6.4 Customer/manufacturer management.................................................................... 18

6.5 Partnering agreements between organizations ...................................................... 19

7 Development of an OMP ................................................................................................ 19

7.1 OMP ..................................................................................................................... 19

7.2 OMP contents ....................................................................................................... 19

8 Strategies to minimize obsolescence during design ....................................................... 21

8.1 Obsolescence as a consideration in design ........................................................... 21

8.2 Source code ......................................................................................................... 21

8.3 Material characterization ....................................................................................... 21

8.4 Modularity ............................................................................................................. 21

8.5 Transparency ........................................................................................................ 21

8.6 Sustainable technologies including materials ........................................................ 22

8.7 Open standards .................................................................................................... 22

8.8 Obtaining IPR ....................................................................................................... 22

8.9 Software licensing ................................................................................................. 22

8.10 Data acquisition .................................................................................................... 22

9 Obsolescence management approach ........................................................................... 23

9.1 Introduction to risk assessment ............................................................................. 23

9.2 Obsolescence monitoring ...................................................................................... 24

9.2.1 Monitoring background .................................................................................. 24

9.2.2 Obsolescence notice monitoring .................................................................... 25

9.2.3 Direct contact monitoring ............................................................................... 25

9.3 Risk assessment to select approach ..................................................................... 25

9.4 Proactive approach ............................................................................................... 27

9.5 Reactive approach ................................................................................................ 27

10 Obsolescence resolutions .............................................................................................. 27

10.1 Resolution selection and implementation .............................................................. 27

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10.2 Same item ............................................................................................................ 28

10.3 Life of need buy .................................................................................................... 29

10.4 Substitutes ............................................................................................................ 30

10.5 Emulation and reverse engineering ....................................................................... 30

10.6 Design change ...................................................................................................... 31

11 Measurement and improvement of obsolescence management activities ....................... 31

11.1 General ................................................................................................................. 31

11.2 Metrics .................................................................................................................. 31

Annex A (informative) Vocabulary relating to obsolescence ................................................ 33

Annex B (informative) Obsolescence resolutions ................................................................ 36

B.1 Obsolescence management resolutions with EOP forecast ................................... 36

B.2 Obsolescence management resolutions with EOP announcement ......................... 37

B.3 Alternate manufacturers: example of a reactive approach in electronics ................ 38

Annex C (informative) Guidance on the effects of obsolescence ......................................... 39

Annex D (informative) Guidance on the OMP ...................................................................... 40

Annex E (informative) Examples of an obsolescence risk assessment ................................ 41

E.1 General ................................................................................................................. 41

E.2 Example 1 ............................................................................................................. 41

E.3 Example 2 ............................................................................................................. 42

E.3.1 Risk assessment process .............................................................................. 42

E.3.2 Likelihood assessment................................................................................... 43

E.3.3 Impact date assessment ................................................................................ 43

E.3.4 Obsolescence risk ......................................................................................... 44

E.3.5 Review .......................................................................................................... 44

Annex F (informative) Example of an obsolescence management decision process ............ 45

Bibliography .......................................................................................................................... 47

Figure 1 – Obsolescence management activities ................................................................... 14

Figure 2 – Assessments identifying obsolescence risks and issues ....................................... 15

Figure 3 – Item's life cycle versus obsolescence management activities ............................... 17

Figure 4 – Proactive versus reactive approaches with resolutions ......................................... 24

Figure B.1 – Item production output with EOP forecast and obsolescence scenarios ............ 36

Figure B.2 – Item production output at EOP announcement and obsolescence

scenarios .............................................................................................................................. 37

Figure E.1 – Sample risk assessment process ...................................................................... 43

Figure F.1 – Initial decision process to recommend obsolescence resolutions ....................... 45

Figure F.2 – Decision process to recommend obsolescence resolutions (long term

repairs strategy) ................................................................................................................... 46

Figure F.3 – Decision process to recommend obsolescence resolutions (LNB) ..................... 46

Table E.1 – Likelihood assessment ....................................................................................... 41

Table E.2 – Impact assessment ............................................................................................ 41

Table E.3 – Combination of likelihood and impact assessment .............................................. 42

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Table E.4 – Level of proactive approach assessment ............................................................ 42

Table E.5 – EOP forecast ..................................................................................................... 43

Table E.6 – Number of approved manufacturers ................................................................... 43

Table E.7 – Likelihood .......................................................................................................... 43

Table E.8 – Impact date ........................................................................................................ 44

Table E.9 – Risk level ........................................................................................................... 44

Table E.10 – Obsolescence risk review ................................................................................. 44

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SIST EN IEC 62402:2019
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OBSOLESCENCE MANAGEMENT
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 62402 has been prepared by IEC technical committee 56:

Dependability.

This second edition cancels and replaces the first edition published in 2007. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:

a) this document has now been written with requirements as a standard, not a guide;

b) this document continues to have guidance in the informative annexes;

c) this document has been written as a general process for all technologies and items.

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SIST EN IEC 62402:2019
– 6 – IEC 62402:2019 © IEC 2019
The text of this International Standard is based on the following documents:
FDIS Report on voting
56/1838/FDIS 56/1843/RVD

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.
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SIST EN IEC 62402:2019
IEC 62402:2019 © IEC 2019 – 7 –
INTRODUCTION

For the purposes of this document, obsolescence management is a discipline used at all

phases of an item’s life cycle to ensure an item and its sub items can continue to fulfil their

requirements over their expected useful life.

This document takes a different view of obsolescence from the standard dictionary definition.

Instead of an item becoming outdated or no longer used, this document views obsolescence

as the transition of a required item still in use from available to unavailable from the

manufacturer. Any item that remains in use will be subject to obsolescence. Obsolescence

manifests itself as difficulty in obtaining supplies, spares and/or support.

This document defines the requirements for managing the obsolescence of any type of item.

Obsolescence management helps prevent unnecessary losses (for example loss of

commercial service or capability) and treat risks associated with obsolescence. The

assessment of risk associated with obsolescence takes account of factors including but not

limited to: the likelihood of an item becoming obsolete during its expected useful life, the

likelihood of an impact occurring during that projected useful life, and the severity of that

impact. Obsolescence management treats risks associated with obsolescence by reducing the

likelihood or severity of impact, or both.

It has become essential to include obsolescence management within planning activities from

the earliest life cycle phases. The guidance provided in this document could be characterized

as strategic obsolescence management when obsolescence management is planned and
implemented during the early life cycle phases.

Even though this situation may not be a direct case of obsolescence, this document will also

be of assistance in the management of items that have diminished manufacturing sources and

materiel shortages that can result in long lead times, reduced availability and ultimately

obsolescence of those items.

Managing obsolescence contributes to the dependability of an item, particularly supportability,

which is defined as the ‘ability to be supported to sustain the required availability with a

defined operational profile and given logistic and maintenance resources’. As such,

obsolescence management may be performed as part of an overall dependability
management programme as described in IEC 60300-1 [1] .
____________
Numbers in square brackets refer to the Bibliography.
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OBSOLESCENCE MANAGEMENT
1 Scope

This document provides requirements and guidance for obsolescence management applicable

to any organization that is dependent on another organization to obtain value from the

usefulness of the items that it provides. A cost-effective obsolescence management process

and the activities used to implement the process are applicable throughout all phases of an

item’s life cycle.
This document covers the following areas:
• establishing an obsolescence management policy;
• establishing an infrastructure and an organization;
• developing an obsolescence management plan (OMP);
• developing strategies to minimize obsolescence during design;
• determining an obsolescence management approach;
• selecting obsolescence resolution and implementation;
• measuring and improving the performance of the outcomes of the obsolescence
management activities.

Guidance on obsolescence management is included as notes, in the informative annexes and

references in the Bibliography.
2 Normative references
There are no normative references in this document.
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
alternative item

item whose characteristics can be different from that specified for one or more reasons

EXAMPLE Items with different quality or reliability level, tolerance, parameteters, temperature range.

Note 1 to entry: See also ‘substitutes’ (10.4).
3.1.2
commercial off-the-shelf
COTS
conforming to the manufacturer’s datasheet and available to any purchaser
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IEC 62402:2019 © IEC 2019 – 9 –

Note 1 to entry: A single user is not able to influence the manufacturer’s datasheet.

Note 2 to entry: This note applies to the French language only.
3.1.3
emulation

process that produces a substitute item for the purpose of replacing another item while

maintaining the same form, fit and function, and interface

Note 1 to entry: Microcircuit emulation can replicate, with state-of-the-art, items that emulate the original item.

3.1.4
end of production
EOP
date of discontinuance from manufacture
Note 1 to entry: This note applies to the French language only.
3.1.5
equivalent item
item which is functionally, parametrically and technically interchangeable

Note 1 to entry: This term is also known as ‘form, fit, function and interface’ F3I.

Note 2 to entry: See also ‘substitutes’ (10.4).
3.1.6
existing stock

sub item(s) from within the supply chain and inventory that can be allocated to the item

without requalification
3.1.7
indenture level
level of sub-division within a system hierarchy
EXAMPLE System, subsystem, assembly, and component.

Note 1 to entry: From the maintenance perspective, the indenture level depends upon various factors, including

the complexity of the item's construction, the accessibility of sub items, skill level of maintenance personnel, test

equipment facilities, and safety considerations.
[SOURCE: IEC 60050-192:2015 [2], 192-01-05]
3.1.8
item
subject being considered

Note 1 to entry: The item may be an individual part, component, device, functional unit, equipment, subsystem, or

system.

Note 2 to entry: The item may consist of hardware, software, people or any combination thereof.

Note 3 to entry: The item is often comprised of elements that may each be individually considered. See sub

item (3.1.21) and indenture level (3.1.7).

Note 4 to entry: IEC 60050-191:1990 (now withdrawn; replaced by IEC 60050-192:2015) identified the term

“entity” as an English synonym, which is not true for all applications.

Note 5 to entry: The definition for item in IEC 60050-191:1990 (now withdrawn; replaced by IEC 60050-192:2015)

is a description rather than a definition. This new definition provides meaningful substitution throughout this

document. The words of the former definition form new note 1.
[SOURCE: IEC 60050-192:2015 [2], 192-01-01]
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3.1.9
integrator
organization that assembles an item of complex sub items for the end user

Note 1 to entry: Examples of items for the end user are: car, ship, aeroplane, oilrig.

3.1.10
life of need buy
LNB

procurement of sub items sufficient to support the item throughout its life cycle, or until the

next planned upgrade

Note 1 to entry: Identified as a proactive LNB or a reactive LNB depending on which obsolescence approach is

being used for the phase of the life cycle for which the procurement is taking place. (See 10.3).

Note 2 to entry: This term was previously known as lifetime buy.
Note 3 to entry: This note applies to the French language only.
3.1.11
manufacturer

organization or individual with responsibility for the design, manufacture, packaging and

labelling of an item before placing the item on the market under their own name or trademark

3.1.12
obsolescence

transition of an item from available to unavailable from the manufacturer in accordance with

the original specification

Note 1 to entry: In high reliability items, the sub item’s original manufacturer and original specification are

generally identified in the item’s original configuration.

Note 2 to entry: Obsolescence might be because production has ended or because of the lack of availability of

service provision, support of software or processed material.
Note 3 to entry: A specifi
...

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