Surface mounting technology - Environmental and endurance test methods for surface mount solder joint - Part 1-2: Shear strength test

The test method described in IEC 62137-1-2:2007 is applicable to leadless surface mounting components and surface mounting connectors to which pull test is not applicable. It is not applicable to multi-lead components and gull-wing leads. The method is designed to test and evaluate the endurance of the solder joint between component terminals and lands on a substrate, by means of a shear type mechanical stress. This test is applicable to evaluate the effects of repeated temperature change on the strength of the solder joints between terminals and lands on a substrate.

Technologie de montage en surface - Méthodes d'essais d'environnement et d'endurance des joints brasés montés en surface - Partie 1-2: Essai de résistance au cisaillement

La méthode d'essai décrite dans la CEI 62137-1-2:2007 est applicable aux composants montés en surface sans connexion et aux connecteurs montés en surface auxquels l'essai à la traction n'est pas applicable. Elle n'est pas applicable aux composants à sorties multiples ni aux composants à sortie en aile de mouette. La méthode est conçue pour soumettre à essai et évaluer l'endurance du joint brasé entre les bornes des composants et les plages d'accueil sur un substrat, au moyen d'une contrainte mécanique de type cisaillement. Cet essai permet d'évaluer les effets de variations répétées de la température sur la résistance des joints brasés entre les bornes et les plages d'accueil sur un substrat.

General Information

Status
Published
Publication Date
24-Jul-2007
Drafting Committee
Current Stage
PPUB - Publication issued
Start Date
30-Sep-2007
Completion Date
25-Jul-2007
Ref Project

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IEC 62137-1-2:2007 - Surface mounting technology - Environmental and endurance test methods for surface mount solder joint - Part 1-2: Shear strength test Released:7/25/2007 Isbn:2831892414
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IEC 62137-1-2:2007 - Surface mounting technology - Environmental and endurance test methods for surface mount solder joint - Part 1-2: Shear strength test
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INTERNATIONAL IEC
STANDARD 62137-1-2
First edition
2007-07
Surface mounting technology –
Environmental and endurance test
methods for surface mount solder joint –
Part 1-2:
Shear strength test
Reference number
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: inmail@iec.ch
Web: www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
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INTERNATIONAL IEC
STANDARD 62137-1-2
First edition
2007-07
Surface mounting technology –
Environmental and endurance test
methods for surface mount solder joint –
Part 1-2:
Shear strength test
PRICE CODE
Commission Electrotechnique Internationale Q
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – 62137-1-2 © IEC:2007(E)
CONTENTS
FOREWORD.3

1 Scope.5

2 Normative references .5

3 Terms and definitions .5

4 General remarks.6

5 Test equipment and materials.7

5.1 Shear test equipment .7
5.2 Pushing tool .7
5.3 Optical microscope.7
5.4 Scanning electron microscope (SEM) .7
5.5 Reflow soldering oven .7
5.6 Test substrate .7
5.7 Solder alloy .8
5.8 Solder paste.8
6 Mounting method.8
7 Test conditions .9
7.1 Test: Rapid change of temperature.9
7.2 Shear strength test.9
8 Test procedure .9
8.1 Test sequence.9
8.2 Pre-conditioning .10
8.3 Initial shear strength.10
8.4 Rapid change of temperature .10
8.5 Recovery.10
8.6 Intermediate / final shear strength .10
9 Items to be included in the test report.10
10 Items to be given in the product specification .11

Annex A (normative) Shear strength test – Details.15

Bibliography.17

Figure 1 – Area under evaluation in the shear strength test .6
Figure 2 – Typical reflow soldering profile.9
Figure 3 – Test procedure.10
Figure 4 – Failure modes in shear strength test (5-faced electrodes) .12
Figure 5 – Failure modes in shear strength test (two electrodes type) .13
Figure 6 – Failure modes in shear strength test (switches).14
Figure A.1 – Fixing of substrate for shear strength test .16
Figure A.2 – Position of pushing tool (leadless components).16

62137-1-2 © IEC:2007(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
SURFACE MOUNTING TECHNOLOGY –
ENVIRONMENTAL AND ENDURANCE TEST METHODS

FOR SURFACE MOUNT SOLDER JOINT –

Part 1-2: Shear strength test
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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 62137-1-2 has been prepared by IEC technical committee 91:
Electronics assembly technology.
The text of this standard is based on the following documents:
FDIS Report on voting
91/683/FDIS 91/699/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – 62137-1-2 © IEC:2007(E)
A list of all the parts in the IEC 62137 series, under the general title Surface mounting
technology – Environmental and endurance test methods for surface mount solder joint, can

be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until

the maintenance result date indicated on the IEC web site 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.
A bilingual version of this publication may be issued at a later date.

62137-1-2 © IEC:2007(E) – 5 –
SURFACE MOUNTING TECHNOLOGY –
ENVIRONMENTAL AND ENDURANCE TEST METHODS

FOR SURFACE MOUNT SOLDER JOINT –

Part 1-2: Shear strength test
1 Scope
The test method described in this part of IEC 62137 is applicable to leadless surface
mounting components and surface mounting connectors to which pull test is not applicable. It
is not applicable to multi-lead components and gull-wing leads.
The method is designed to test and evaluate the endurance of the solder joint between
component terminals and lands on a substrate, by means of a shear type mechanical stress.
This test is applicable to evaluate the effects of repeated temperature change on the strength
of the solder joints between terminals and lands on a substrate.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 60068-1, Environmental testing – Part 1: General and guidance
IEC 60068-2-14, Environmental testing – Part 2-14: Test N: Change of temperature
IEC 60194, Printed board design, manufacture and assembly – Terms and definitions
IEC 61188-5-2, Printed boards and printed board assemblies – Design and use – Part 5-2:
Attachment (land/joint) considerations – Discrete components
IEC 61760-1, Surface mounting technology – Part 1: Standard method for the specification of
surface mounting components (SMDs)
IEC 61188-5-5, Printed boards and printed board assemblies – Design and use – Part 5-5:
Sectional requirements - Attachment (land/joint) considerations – Components with gull-wing
leads on four sides
IEC 61249-2-7, Materials for printed boards and other interconnecting structures – Part 2-7:
Reinforced base materials clad and unclad – Epoxide woven E-glass laminated sheet of
defined flammability (vertical burning test), copper-clad
IEC 61190-1-2, Attachment materials for electronic assembly – Part 1-2: Requirements for
solder pastes for high-quality interconnections in electronics assembly
IEC 61190-1-3, Attachment materials for electronic assembly – Part 1-3: Requirements for electronic
grade solder alloys and fluxed and non-fluxed solid solders for electronic soldering applications
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
—————————
In preparation.
– 6 – 62137-1-2 © IEC:2007(E)
NOTE Key terms used in this standard are taken mostly from IEC 60068-1 and IEC 60194.

3.1
shear strength
maximum force applied parallel to the substrate and perpendicular to the specimen lateral

surface to break the joint of SMD mounted on a boar
...


IEC 62137-1-2
Edition 1.0 2007-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Surface mounting technology – Environmental and endurance test methods for
surface mount solder joint –
Part 1-2: Shear strength test
Technologie de montage en surface – Méthodes d’essais d’environnement et
d’endurance des joints brasés montés en surface –
Partie 1-2: Essai de résistance au cisaillement

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by
any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or
IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: inmail@iec.ch
Web: www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
ƒ Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
ƒ IEC Just Published: www.iec.ch/online_news/justpub
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on-line and also by email.
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The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
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IEC 62137-1-2
Edition 1.0 2007-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Surface mounting technology – Environmental and endurance test methods for
surface mount solder joint –
Part 1-2: Shear strength test
Technologie de montage en surface – Méthodes d’essais d’environnement et
d’endurance des joints brasés montés en surface –
Partie 1-2: Essai de résistance au cisaillement

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
Q
CODE PRIX
ICS 31.190 ISBN 2-8318-9783-1
– 2 – 62137-1-2 © IEC:2007
CONTENTS
FOREWORD.3
1 Scope.5
2 Normative references .5
3 Terms and definitions .6
4 General remarks.6
5 Test equipment and materials.7
5.1 Shear test equipment .7
5.2 Pushing tool .7
5.3 Optical microscope.7
5.4 Scanning electron microscope (SEM) .7
5.5 Reflow soldering oven .7
5.6 Test substrate .7
5.7 Solder alloy .8
5.8 Solder paste.8
6 Mounting method for reflow soldering .8
7 Test conditions .9
7.1 Test: Rapid change of temperature.9
7.2 Shear strength test.9
8 Test procedure .9
8.1 Test sequence.9
8.2 Pre-conditioning .10
8.3 Initial shear strength.10
8.4 Rapid change of temperature .10
8.5 Recovery.10
8.6 Intermediate / final shear strength .10
9 Items to be included in the test report.10
10 Items to be given in the product specification .11
Annex A (normative) Shear strength test – Details.15
Bibliography.17

Figure 1 – Area under evaluation in the shear strength test .6
Figure 2 – Typical reflow soldering profile.9
Figure 3 – Test procedure.10
Figure 4 – Failure modes in shear strength test (5-faced electrodes) .12
Figure 5 – Failure modes in shear strength test (two electrodes type) .13
Figure 6 – Failure modes in shear strength test (switches).14
Figure A.1 – Fixing of substrate for shear strength test .16
Figure A.2 – Position of pushing tool (leadless components).16

62137-1-2 © IEC:2007 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SURFACE MOUNTING TECHNOLOGY –
ENVIRONMENTAL AND ENDURANCE TEST METHODS
FOR SURFACE MOUNT SOLDER JOINT –

Part 1-2: Shear strength test
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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 62137-1-2 has been prepared by IEC technical committee 91:
Electronics assembly technology.
This bilingual version, published in 2008-05, corresponds to the English version.
The text of this standard is based on the following documents:
FDIS Report on voting
91/683/FDIS 91/699/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.
The French version of this standard has not been voted upon.

– 4 – 62137-1-2 © IEC:2007
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all the parts in the IEC 62137 series, under the general title Surface mounting
technology – Environmental and endurance test methods for surface mount solder joint, can
be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site 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.
62137-1-2 © IEC:2007 – 5 –
SURFACE MOUNTING TECHNOLOGY –
ENVIRONMENTAL AND ENDURANCE TEST METHODS
...

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