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EUROPEAN STANDARD
EN 60068-2-54
NORME EUROPÉENNE
August 2006
EUROPÄISCHE NORM
ICS 19.040; 31.020 Supersedes HD 323.2.54 S1:1987

English version
Environmental testing
Part 2-54: Tests -
Test Ta: Solderability testing of electronic components
by the wetting balance method
(IEC 60068-2-54:2006)
Essais d'environnement  Umweltprüfungen
Partie 2-54 : Essais - Teil 2-54: Prüfungen -
Essai Ta : Essai de brasabilité des Prüfung Ta: Prüfung der Lötbarkeit
composants électroniques par elektronischer Bauelemente
la méthode de la balance de mouillage mit der Benetzungswaage
(CEI 60068-2-54:2006) (IEC 60068-2-54:2006)

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.

CENELEC
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 60068-2-54:2006 E
Foreword
The text of document 91/576/FDIS, future edition 2 of IEC 60068-2-54, prepared by IEC TC 91,
Electronics assembly technology, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 60068-2-54 on 2006-07-01.
This European Standard supersedes HD 323.2.54 S1:1987.
The major technical changes with regard to HD 323.2.54 S1:1987 concern:
– the addition of lead free solder alloy (see Clause 7, Materials);
– reversal of force-time curves to align with EN 60068-2-69 (see Figure 2 and Figure B.1);
– modification to the test requirement for progress of wetting (see Clause 9).
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2007-04-01
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2009-07-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60068-2-54:2006 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60068-2-44 NOTE  Harmonized as EN 60068-2-44:1995 (not modified).
IEC 60068-2-58 NOTE  Harmonized as EN 60068-2-58:2004 (not modified).
IEC 60068-2-69 NOTE  Harmonized as EN 60068-2-69:1996 (not modified).
IEC 61190-1-1 NOTE  Harmonized as EN 61190-1-1:2002 (not modified).
IEC 61190-1-3 NOTE  Harmonized as EN 61190-1-3:2002 (not modified).
__________
- 3 - EN 60068-2-54:2006
Annex ZA
(normative)
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
applies.
Publication Year Title EN/HD Year

1)
IEC 60068-1 1988 Environmental testing EN 60068-1 1994
Part 1: General and guidance
2)
IEC 60068-2-20 1979 Environmental testing HD 323.2.20 S3 1988
Part 2: Tests - Test T: Soldering

3) 4)
IEC 61190-1-3 - Attachment materials for electronic assembly EN 61190-1-3 2002
Part 1-3: Requirements for electronic grade
solder alloys and fluxed and non-fluxed solid
solders for electronic soldering applications

1)
EN 60068-1 includes corrigendum October 1988 + A1:1992 to IEC 60068.
2)
HD 323.2.20 S3 includes A2:1987 to IEC 60068-2-20.
3)
Undated reference.
4)
Valid edition at date of issue.

INTERNATIONAL IEC
STANDARD 60068-2-54
Second edition
2006-04
Environmental testing –
Part 2-54:
Tests – Test Ta: Solderability testing of
electronic components by the wetting
balance method
 IEC 2006  Copyright - all rights reserved
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 the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale R
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – 60068-2-54  IEC:2006(E)
CONTENTS
FOREWORD.3

1 Scope.5
2 Normative references.5
3 Terms and definitions .5
4 General description of the test .5
5 Description of the test apparatus.6
5.1 Test system.6
5.2 Solder bath.6
6 Preconditioning.6
6.1 Preparation of specimens .6
6.2 Ageing.6
7 Materials .7
7.1 Solder .7
7.2 Flux.7
8 Procedure.7
8.1 Test temperature .7
8.2 Fluxing .7
8.3 Flux drying.8
8.4 Test.8
9 Presentation of results .8
9.1 Form of chart-recorder trace .8
9.2 Points of significance.9
9.3 Reference wetting force .9
9.4 Test requirements.10
10 Information to be given in the relevant specification.10

Annex A (normative) Equipment specification .11
Annex B (informative) Guide to the use of the wetting balance for solderability testing .12

Bibliography .18

Figure 1 – Test arrangement .6
Figure 2 – Wetting conditions .9
Figure B.1 – Representative force-time curves .15

Table 1 – Time sequence of the test.8

60068-2-54  IEC:2006(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
ENVIRONMENTAL TESTING –
Part 2-54: Tests – Test Ta: Solderability testing
of electronic components by the wetting balance method

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 60068-2-54 has been prepared by IEC technical committee 91:
Electronics assembly technology.
This second edition cancels and replaces the first edition, published in 1985 and constitutes a
technical revision.
The major technical changes with regard to the previous edition concern:
– the addition of lead free solder alloy (see Clause 7, Materials);
– reversal of force-time curves to align with IEC 60068-2-69 (see Figure 2 and Figure B.1);
– modification to the test requirement for progress of wetting (see Clause 9).

– 4 – 60068-2-54  IEC:2006(E)
The text of this standard is based on the following documents:
FDIS Report on voting
91/576/FDIS 91/587/RVD
Full information on the voting for the approval of this standard can be found in
...