EN 61249-2-5:2003

SLOVENSKI SIST EN 61249-2-5:2004

STANDARD
september 2004
Materiali za tiskane plošče in druge povezovalne strukture –2-5. del:
Pokovinjeni in nepokovinjeni ojačeni osnovni materiali – Z bakrom
pokovinjeni laminat z določeno gorljivostjo (navpični preskus gorljivosti), ki
ima jedro ojačeno z bromiranim epoksidnim celuloznim papirjem in površino
s tkanim E-steklom. (IEC 61249-2-5:2003)*
Materials for printed boards and other interconnecting structures - Part 2-5:
Reinforced base materials, clad and unclad - Brominated epoxide cellulose paper
reinforced core / woven E-glass reinforced surfaces laminated sheets of defined
flammability (vertical burning test), copper-clad (IEC 61249-2-5:2003)
ICS 31.180 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 61249-2-5
NORME EUROPÉENNE
EUROPÄISCHE NORM December 2003

ICS 31.180
English version
Materials for printed boards and other interconnecting structures
Part 2-5: Reinforced base materials, clad and unclad –
Brominated epoxide cellulose paper reinforced core /
woven E-glass reinforced surfaces laminated sheets
of defined flammability (vertical burning test), copper-clad
(IEC 61249-2-5:2003)
Matériaux pour circuits imprimés et autres Materialien für Verbindungsstrukturen
structures d'interconnexion Teil 2-5: Kaschierte und unkaschierte
Partie 2-5: Matériaux de base renforcés, verstärkte Basismaterialien –
plaqués et non plaqués – Kupferkaschierte mit Zellulose-Papier-
Feuilles stratifiées avec couches centrales Innenlagen und E-Glasgewebe-Außenlagen
renforcées en papier cellulose époxyde bromé verstärkte Laminattafeln auf der Basis
et couches superficielles renforcées en tissu von bromiertem Epoxidharz mit definierter
de verre de type E époxyde, d'inflammabilité Brennbarkeit (Brennprüfung mit vertikaler
définie (essai de combustion verticale), Prüflingslage)
plaquées cuivre (IEC 61249-2-5:2003)
(CEI 61249-2-5:2003)
This European Standard was approved by CENELEC on 2003-12-01. 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, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and 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

© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61249-2-5:2003 E
Foreword
The text of document 91/410/FDIS, future edition 1 of IEC 61249-2-5, prepared by IEC TC 91,
Electronics assembly technology, was submitted to the IEC-CENELEC parallel vote and was
approved by CENELEC as EN 61249-2-5 on 2003-12-01.
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) 2004-09-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2006-12-01

Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annexes A, B and C are informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61249-2-5:2003 was approved by CENELEC as a
European Standard without any modification.
__________
- 3 - EN 61249-2-5:2003
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
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
IEC 61189-2 1997 Test methods for electrical materials, EN 61189-2 1997
+ corr. June 1997 printed boards and other interconnection + corr. August 1997
structures and assemblies
Part 2: Test methods for materials for
interconnection structures
IEC 61249-5-1 1995 Materials for interconnection structures EN 61249-5-1 1996
Part 5: Sectional specification set for
conductive foils and films with or without
coatings –
Section 1: Copper foils (for the
manufacture of copper-clad base
materials)
ISO 9000 2000 Quality management systems - EN ISO 9000 2000
Fundamentals and vocabulary
ISO 11014-1 1994 Safety data sheet for chemical products - -
Part 1: Content and order of sections

ISO 14001 1996 Environmental management systems EN ISO 14001 1996
Specification with guidance for use

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� IEC 2003 Droits de reproduction réservés � Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. 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
CODE PRIX
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Commission Electrotechnique Internationale PRICE CODE
International Electrotechnical Commission

61249-2-5 � IEC:2003 – 3 –
CONTENTS
FOREWORD.7
1 Scope.13
2 Normative references.13
3 Materials and construction .15
3.1 Resin system.15
3.2 Reinforcement.15
3.3 Metal foil.15
4 Internal marking.15
5 Electrical properties.15
6 Non-electrical properties of the copper-clad laminate .17
6.1 Appearance of the copper-clad sheet .17
6.2 Appearance of the unclad face.19
6.3 Laminate thickness.19
6.4 Bow and twist .19
6.5 Properties related to the copper foil bond .21
6.6 Punching and machining .23
6.7 Dimensional stability.23
6.8 Sheet sizes.23
6.9 Cut panels.25
7 Non-electrical properties of the base material after complete removal of the copper foil .25
7.1 Appearance of the dielectric base material .25
7.2 Flexural strength.27
7.3 Flammability.27
7.4 Water absorption.29
7.5 Measling.29
7.6 Glass transition temperature and cure factor .31
8 Quality assurance.31
8.1 Quality system.31
8.2 Responsibility for inspection.31
8.3 Qualification inspection.31
8.4 Quality conformance inspection.31
8.5 Certificate of conformance .33
8.6 Safety data sheet.33
9 Packaging and marking.33
10 Ordering information.33
Annex A (informative) Engineering information .35
Annex B (informative) Common laminate construction .39
Annex C (informative) Guideline for qualification and conformance inspection.41
Bibliography .43

61249-2-5 � IEC:2003 – 5 –
Table 1 – Electrical properties .15
Table 2 – Nominal thickness and tolerance of metal-clad laminate .19
Table 3 – Bow and twist.21
Table 4 – Pull-off and peel strength .21
Table 5 – Dimensional stability .23
Table 6 – Size tolerance for cut panels .25
Table 7 – Rectangularity of cut panels .25
Table 8 – Flexural strength.27
Table 9 – Flammability .29
Table 10 – Water absorption .29
Table 11 – Measling .29
Table 12 – Glass transition temperature and cure factor .31
Table C.1 – Guideline for qualification and conformance inspection .41

61249-2-5 � IEC:2003 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
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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 61249-2-5 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
91/410/FDIS 91/426/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.

61249-2-5 � IEC:2003 – 9 –
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
IEC 61249-2 consists of the following parts, under the general title �����������������������������
�������������������������������������������������������������������������������������������
Part 2-1: Phenolic cellulose paper laminate, economic grade
Part 2-2: Phenolic cellulose paper reinforced laminated sheets, high electrical grade,
copper-clad
Part 2-4: Polyester non-woven/woven fibreglass laminated sheet of defined flammability
(vertical burning test), copper-clad
Part 2-5: Brominated epoxide cellulose paper reinforced core/woven E-glass reinforced
surfaces laminated sheets of defined flammability (vertical burning test), copper-
clad
Part 2-6: Brominated epoxide non-woven/woven, E-glass reinforced laminated sheets of
defined flammability (vertical burning test), copper-clad
Part 2-7: Epoxide woven E-glass laminated sheet of defined flammability (vertical burning
test), copper-clad
Part 2-8: Modified brominated epoxide woven fibreglass reinforced laminated sheets of
defined flammability (vertical burning test), copper clad
Part 2-9: Bismaleimide/triazine, modified epoxide or unmodified, woven E-glass reinforced
laminated sheets of defined flammability (vertical burning test), copper-clad
Part 2-10: Cyanate ester, brominated epoxide, modified or unmodified, woven E-glass
reinforced laminated sheets of defined flammability (vertical burning test),
copper-clad
Part 2-11: Polyimide, brominated epoxide modified or unmodified, woven E-glass reinforced
laminated sheets of defined flammability (vertical burning test), copper-clad
Part 2-12: Epoxide non-woven aramid laminate of defined flammability, copper-clad
Part 2-13: Cyanate ester non-woven aramid laminate of defined flammability, copper-clad
Part 2-18: Polyester non-woven fibreglass reinforced laminated sheet of defined flammability
(vertical burning test), copper-clad
Part 2-19: Epoxide cross-plied linear fibreglass-reinforced laminated sheets of defined flam-
mability (vertical burning test), copper-clad
Part 2-21: Non-halogenated epoxide woven E-glass reinforced laminated sheets of defined
flammability (vertical burning test), copper-clad
Part 2-22: Modified non-halogenated epoxide woven E-glass laminated sheets of defined
flammablity (vertical burning test), copper-clad
___________
Under consideration.
61249-2-5 � IEC:2003 – 11 –
Part 2-23: Non-brominated phenolic, cellulose paper laminated sheets of defined flammability,
economic grade, copper clad
Part 2-26: Non-brominated epoxide, non-woven/woven glass fabric sheet of defined flam-
mability, copper-clad
The committee has decided that the contents of this publication will remain unchanged until
2007. At this date, the publication will be
 reconfirmed;
 withdrawn;
 replaced by a revised edition, or
 amended.
___________
Under consideration.
61249-2-5 � IEC:2003 – 13 –
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This part of IEC 61249 gives requirements for properties of brominated epoxide cellulose paper
reinforced core/woven E-glass reinforced surfaces-laminated sheets of defined flammability
(vertical burning test), copper-clad in thicknesses of 0,80 mm up to 1,70 mm. The flammability
rating is achieved through the use of brominated fire retardants reacted as part of the epoxide
polymeric structure. The glass transition temperature is defined to be 75 °C minimum.
Some property requirements may have several classes of performance. The class desired
needs to be specified on the purchase order, otherwise the default class of material may be
supplied.
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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 61189-2:1997, ����� �������� ���� ����������� ����������� ���������������� ����������� ����
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IEC 61249-5-1:1995, ���������������������������������������������������������������������������
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ISO 9000:2000, %�����&�������������&��������’�������������������������&
ISO 11014-1:1994, �����&�������������������������������������
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