Environmental testing - Part 2-21: Tests - Test U: Robustness of terminations and integral mounting devices

Applicable to all electrical and electronic components whose terminations or integral mounting devices are liable to be submitted to stresses during normal assembly or handling operations.

Umweltprüfungen - Teil 2-21: Prüfungen - Prüfung U: Widerstandsfähigkeit der Anschlüsse und integrierter Befestigungsmittel

Essais d'environnement - Partie 2-21: Essais - Essai U: Robustesse des sorties et des dispositifs de montage incorporés

La CEI 60068-2-21:2006 est applicable à tous les composants électriques et électroniques dont les sorties ou les dispositifs de montage incorporés sont susceptibles d'être soumis à des contraintes au cours des opérations normales de montage ou de manipulation. La présente édition inclut les modifications techniques significatives suivantes par rapport à l'édition antérieure: - Ajout de la sévérité du couple pour le diamètre nominal du filetage de 8 mm à l'Essai Ud: essai de couple, conformément à la CEI 60252-2 (voir le tableau 5); - Modification de la spécification du substrat et de la méthode de montage décrivant l'alliage à braser sans plomb, à l'Essai Ue (voir la Figure 5 et le 8.3.3 et al.); - Modification du gabarit d'essai et des conditions d'essai concernant l'Essai Ue1: essai de pliage du substrat (voir la Figure 7 et al.); - Modification de la force de poussée passant de 10 N à 5 N dans l'Essai Ue3: essai de cisaillement (voir le Le contenu du corrigendum de janvier 2012 a été pris en considération dans cet exemplaire.

Okoljski preskusi - 2-21. del: Preskusi - Preskus U: Trdnost priključkov in celotnih vgradnih naprav (IEC 60068-2-21:2006)

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EN 60068-2-21

July 2006

ICS 19.040; 31.190 Supersedes EN 60068-2-21:1999

English version

Environmental testing
Part 2-21: Tests -
Test U: Robustness of terminations and integral mounting devices
(IEC 60068-2-21:2006)

Essais d'environnement  Umweltprüfungen
Partie 2-21: Essais - Teil 2-21: Prüfungen -
Essai U: Robustesse des sorties et Prüfung U: Widerstandsfähigkeit der
des dispositifs de montage incorporés Anschlüsse und integrierter
(CEI 60068-2-21:2006) Befestigungsmittel
(IEC 60068-2-21:2006)

This European Standard was approved by CENELEC on 2006-07-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60068-2-21:2006 E

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EN 60068-2-21:2006 - 2 -
The text of document 91/582/FDIS, future edition 6 of IEC 60068-2-21, prepared by IEC TC 91,
Electronics assembly technology, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 60068-2-21 on 2006-07-01.
This European Standard supersedes EN 60068-2-21:1999.
It includes the following significant technical changes with respect to EN 60068-2-21:1999
– addition of torque severity for nominal thread diameter of 8 mm in Test Ud: torque in accordance with
IEC 60252-2 (see Table 5);
– modification of substrate specification and mounting method describing lead-free solder in Test Ue
(see Figure 5 and 8.3.3 et al.);
– modification of test jig and test condition in Test Ue : substrate bending test (see Figure 7 et al.);
– change of pushing force from 10 N to 5 N in Test Ue : shear test (see
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2007-04-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2009-07-01
Annex ZA has been added by CENELEC.
Endorsement notice
The text of the International Standard IEC 60068-2-21:2006 was approved by CENELEC as a European
Standard without any modification.

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- 3 - EN 60068-2-21:2006
Annex ZA

Normative references to international publications
with their corresponding European publications

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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

Publication Year Title EN/HD Year

IEC 60068-1 1988 Environmental testing
+ corr. October 1988 Part 1: General and guidance
+ A1 1992 EN 60068-1 1994

IEC 60068-2-20 1979 Environmental testing
+ A2 1987 Part 2: Tests - Test T: Soldering HD 323.2.20 S3 1988

IEC 60068-2-58 2004 Environmental testing EN 60068-2-58 2004
Part 2-58: Tests - Test Td: Test met

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