|
IEC 61760-3
Edition 2.0 2021-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Surface mounting technology –
Part 3: Standard method for the specification of components for through-hole
reflow (THR) soldering
Technique du montage en surface –
Partie 3: Méthode normalisée relative à la spécification des composants pour
le brasage par refusion à trous traversants (THR, Through Hole Reflow)
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 l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de
CH-1211 Geneva 20
Switzerland
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 corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.
A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.
Recherche de publications IEC - IEC online collection - oc.iec.ch
webstore.iec.ch/advsearchform Découvrez notre puissant moteur de recherche et consultez
La recherche avancée permet de trouver des publications IEC gratuitement tous les aperçus des publications. Avec un
en utilisant différents critères (numéro de référence, texte, abonnement, vous aurez toujours accès à un contenu à jour
comité d’études, …). Elle donne aussi des informations sur adapté à vos besoins.
les projets et les publications remplacées ou retirées.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
Le premier dictionnaire d'électrotechnologie en ligne au
Restez informé sur les nouvelles publications IEC. Just
monde, avec plus de 22 000 articles terminologiques en
Published détaille les nouvelles publications parues.
anglais et en français, ainsi que les termes équivalents dans
Disponible en ligne et une fois par mois par email.
16 langues additionnelles. Egalement appelé Vocabulaire
Electrotechnique International (IEV) en ligne.
Service Clients - webstore.iec.ch/csc
Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
[email protected] .
IEC 61760-3
Edition 2.0 2021-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Surface mounting technology –
Part 3: Standard method for the specification of components for through-hole
reflow (THR) soldering
Technique du montage en surface –
Partie 3: Méthode normalisée relative à la spécification des composants pour
le brasage par refusion à trous traversants (THR, Through Hole Reflow)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.190 ISBN 978-2-8322-9294-5
– 2 – IEC 61760-3:2021 © IEC 2021
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Requirements to component design and component specifications . 9
4.1 General requirement . 9
4.2 Packaging . 9
4.3 Labelling of component packaging . 10
4.4 Component marking . 10
4.5 Storage and transportation . 10
4.6 Component outline and design . 10
4.6.1 Drawing and specification . 10
4.6.2 Requirement of pick-up area . 11
4.6.3 Component tilt . 13
4.6.4 Bottom surface requirements . 13
4.6.5 Terminal requirements . 14
4.6.6 Optical recognition . 19
4.6.7 Component height . 19
4.6.8 Component mass . 20
4.7 Mechanical stress . 20
4.8 Component reliability . 20
4.9 Additional requirements for compatibility with lead-free soldering . 20
5 Typical process conditions for THR soldering process . 20
5.1 Mounting by through-hole reflow soldering . 20
5.2 Solder paste supply . 21
5.3 Component insertion . 22
5.4 Reflow soldering methods (recommended) . 22
5.5 Cleaning . 23
5.5.1 General . 23
5.5.2 Cleaning medium and cleaning method . 23
5.5.3 Cleaning process conditions . 23
5.6 Removal and/or replacement of soldered components . 24
6 Relevant tests and requirements for components and component specifications for
THR soldering process . 24
6.1 General . 24
6.2 Wettability . 25
6.3 Dewetting . 25
6.4 Resistance to soldering heat . 25
6.5 Resistance to cleaning solvent . 25
6.5.1 General . 25
6.5.2 Solvent resistance of component . 26
6.5.3 Solvent resistance of marking . 26
6.6 Soldering profile . 26
6.7 Moisture sensitivity level . 26
7 Quality criteria for THR soldering . 26
Annex A (informative) Flux creeping-up and solder wicking . 27
Bibliography . 28
Figure 1 – Example of a component with marked specific orientation put in tape
and tray . 9
Figure 2 – Example of components in a tape . 10
Figure 3 – Pick-up area . 12
Figure 4 – Chuck jaw . 12
Figure 5 – Component side flat surface . 13
Figure 6 – Component top flat surface . 13
Figure 7 – Clearance . 14
Figure 8 – Stand-off height . 14
Figure 9 – Terminal length and protrusion length . 15
Figure 10 – Terminal position tolerance 0,2 mm . 16
Figure 11 – Terminal position tolerance 0,4 mm . 17
Figure 12 – Terminal shape . 18
Figure 13 – Solder wetting . 19
Figure 14 – Typical soldering process steps. 21
Figure 15 – Solder paste supply . 22
Figure A.1 – Example of the flux creeping-up . 27
Figure A.2 – Example of the solder wicking . 27
Table 1 – Typical cleaning conditions. 24
– 4 – IEC 61760-3:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SURFACE MOUNTING TECHNOLOGY –
Part 3: Standard method for the specification of
components for through-hole reflow (THR) soldering
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 ele
...