EN 61086-2:2004

SLOVENSKI SIST EN 61086-2:2005

STANDARD
januar 2005
Prevleke za z elementi opremljene plošče tiskanega vezja (standardne
prevleke) - 2. del: Preskusne metode (IEC 61086-2:2004)
(istoveten EN 61086-2:2004)
Coatings for loaded printed wire boards (conformal coatings) - Part 2: Methods of
test (IEC 61086-2:2004)
ICS 29.035.20; 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 61086-2
NORME EUROPÉENNE
EUROPÄISCHE NORM April 2004
ICS 29.035.20 Supersedes EN 61086-2:1994

English version
Coatings for loaded printed wire boards
(conformal coatings)
Part 2: Methods of test
(IEC 61086-2:2004)
Revêtements appliqués  Beschichtungen für bestückte
sur les cartes de câblage imprimées Leiterplatten (conformal coatings)
(revêtements enrobants) Teil 2: Prüfverfahren
Partie 2: Méthodes d'essai (IEC 61086-2:2004)
(CEI 61086-2:2004)
This European Standard was approved by CENELEC on 2004-04-01. 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, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, 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

© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61086-2:2004 E
Foreword
The text of document 15C/1546/FDIS, future edition 2 of IEC 61086-2, prepared by SC 15C,
Specifications, of IEC TC 15, Insulating materials, was submitted to the IEC-CENELEC parallel vote
and was approved by CENELEC as EN 61086-2 on 2004-04-01.
This European Standard supersedes EN 61086-2:1994.
This edition, which is presented in a new layout, includes the following significant technical changes
from EN 61086-2:1994:
a) a new specimen A has been added;
b) new cleaning and test procedures have been added.
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) 2005-01-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-04-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61086-2:2004 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 61086-2:2004
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 Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60068-2-10 1988 Environmental testing HD 323.2.10 S3 1988
Part 2: Tests - Test J and guidance:
Mould growth
IEC 60068-2-11 1981 Part 2: Tests - Test Ka: Salt mist EN 60068-2-11 1999

1)
IEC 60068-2-14 1984 Part 2: Tests - Test N: Change of EN 60068-2-14 1999
temperature
IEC 60068-2-39 1976 Part 2: Tests - Test Z/AMD: Combined EN 60068-2-39 1999
sequential cold, low air pressure and
damp heat test
IEC 60068-2-78 2001 Part 2-78: Tests - Test Cab: Damp heat, EN 60068-2-78 2001
steady state
IEC 60243-1 1998 Electrical strength of insulating materials - EN 60243-1 1998
Test methods
Part 1: Tests at power frequencies

2)
IEC 60249-1 1982 Base materials for printed circuits EN 60249-1 1993
Part 1: Test methods
IEC 60455-2 1998 Resin based reactive compounds used EN 60455-2 1999
for electrical insulation
Part 2: Methods of test
IEC 60707 1999 Flammability of solid non-metallic EN 60707 1999
materials when exposed to flame sources
- List of test methods
3) 4)
IEC 61086-1 - Coatings for loaded printed wire boards EN 61086-1 2004
(conformal coatings)
Part 1: Definitions, classification and
general requirements
1)
EN 60068-2-14 includes A1:1986 to IEC 60068-2-14.
2)
EN 60249-1 includes A1:1984 + A2:1989 + A3:1991 to IEC 60249-1.
3)
Undated reference.
4)
Valid edition at date of issue.

Publication Year Title EN/HD Year
3) 4)
IEC 61086-3-1 - Part 3-1: Specifications for individual EN 61086-3-1 2004
materials - Coatings for general purpose
(Class 1), high reliability (Class 2) and
aerospace (Class 3)
5)
ISO 1514 1984 Paints and varnishes - Standard panels EN 605 1992
(mod) for testing
ISO 1519 2002 Paints and varnishes - Bend test EN ISO 1519 2002
(cylindrical mandrel)
ISO 2808 1997 Paints and varnishes - Determination of EN ISO 2808 1999
film thickness
ISO 5636-3 1992 Paper and board - Determination of air - -
permeance (medium range)
Part 3: Bendtsen method
5)
EN 605 is superseded by EN ISO 1514:1997, which is based on ISO 1514:1993.

NORME CEI
INTERNATIONALE
IEC
61086-2
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2004-02
Revêtements appliqués sur les cartes
de câblage imprimées (revêtements
enrobants) –
Partie 2:
Méthodes d'essai
Coatings for loaded printed wire
boards (conformal coatings) –
Part 2:
Methods of test
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microfilms, sans l'accord écrit de l'éditeur. the publisher.
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For price, see current catalogue

61086-2  IEC:2004 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.9

1 Scope.11
2 Normative references.11
3 Test specimens.13
3.1 Specimen A.13
3.2 Specimen B.15
3.3 Specimen C.15
3.4 Specimen D.15
4 Environmental exposure of coated specimens .17
4.1 Thermal cycling – Method.17
4.2 Thermal shock – Method .17
4.3 Thermal ageing.17
4.4 Moisture resistance (damp heat) .17
4.5 Salt mist.17
4.6 Cold, low air pressure and damp heat (class 3 only).17
5 Test methods (uncured material) .19
5.1 Shelf life.19
6 Test methods for electrical properties (coated samples) .19
6.1 Breakdown voltage.19
6.2 High frequency dielectric properties (behaviour at resonance).19
6.3 Insulation resistance.19
7 Test methods for non-electrical properties (coated samples) .21
7.1 Visual examination.21
7.2 Thickness of coating.21
7.3 Fluorescence of coating .23
7.4 Tackiness (cure level of coating) .23
7.5 Flexibility.25
7.6 Flammability.25
7.7 Mould growth.25
7.8 Resistance to organic solvents .27
7.9 Coating removal.27

Annex A (normative) Specimen of coating material .35

61086-2  IEC:2004 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
COATINGS FOR LOADED PRINTED WIRE BOARDS
(CONFORMAL COATINGS) –
Part 2: Methods of 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
...