SIST EN 61086-2:2005

Coatings for loaded printed wire boards (conformal coatings) -- Part 2: Methods of test

Gives the methods of test for electrical insulating materials suitable for application as coatings for loaded printed wire boards (conformal coatings), both as uncured and after application to specific boards. The major changes concern the addition of a new specimen A, new cleaning and test procedures and a new layout.

Beschichtungen für bestückte Leiterplatten (conformal coatings) -- Teil 2: Prüfverfahren

Revêtements appliqués sur les cartes de câblage imprimées (revêtements enrobants) -- Partie 2: Méthodes d'essai

Donne les méthodes d'essais des matériaux isolants électriques convenant à l'application comme revêtements appliqués sur les cartes de câblage imprimées (revêtements enrobants). Elle s'applique à la fois aux matériaux non polymérisés et aux matériaux appliqués sur des cartes spécifiques. Les principales modifications sont: l'ajout d'une nouvelle éprouvette A, de nouvelles procédures de nettoyage et d'essai ainsi qu'une nouvelle présentation.

Prevleke za z elementi opremljene plošče tiskanega vezja (standardne prevleke) - 2. del: Preskusne metode (IEC 61086-2:2004)

General Information

• Status: Published
• Publication Date: 31-Dec-2004
• ICS: 29.035.20 - Plastics and rubber insulating materials
• ICS: 31.180 - Printed circuits and boards
• Technical Committee: IZO - Insulating materials
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jan-2005
• Due Date: 01-Jan-2005
• Completion Date: 01-Jan-2005
• Ref Project: EN 61086-2:2004 - Coatings for loaded printed wire boards (conformal coatings) - Part 2: Methods of test

Relations

• Replaces: SIST EN 61086-2:1998 - Specification for coatings for loaded printed wire boards (conformal coatings) -- Part 2: Methods of test
• Effective Date: 29-Jan-2023
• Revised: SIST EN 61086-2:1998 - Specification for coatings for loaded printed wire boards (conformal coatings) -- Part 2: Methods of test
• Effective Date: 13-May-2010
• Replaces: SIST EN 61086-2:1998 - Specification for coatings for loaded printed wire boards (conformal coatings) -- Part 2: Methods of test
• Effective Date: 07-Jun-2022

Standards Content (Sample)

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
SIST EN 61086-2:2005(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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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

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EN 61086-2:2004 - 2 -
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.
__________

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- 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.

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EN 61086-2:2004 - 4 -
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.

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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
 IEC 2004 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: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
CODE PRIX
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PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

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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

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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 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 61086-2 has been prepared by subcommittee 15C: Specifications,
of IEC technical committee 15: Insulating materials.
This second edition cancels and replaces the first edition, published in 1992, and constitutes
a technical revision. The major changes concern the addition of a new specimen A, new
cleaning and test procedures and a new layout.
The text of this standard is based on the following documents:
FDIS Report on voting
15C/1546/FDIS 15C/1568/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.

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61086-2  IEC:2004 – 7 –
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2
The committee has decided that the contents of this publication will remain unchanged until
2009. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

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61086-2  IEC:2004 – 9 –
INTRODUCTION
This International Standard forms part of a series under the general title Coatings for loaded
printed wire boards (conformal coatings).
The series consists of three parts:
Part 1: Definitions, classification and general requirements (IEC 61086-1)
Part 2: Methods of test (IEC 61086-2)
Part 3: Specifications for individual materials (IEC 61086-3)

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61086-2  IEC:2004 – 11 –
COATINGS FOR LOADED PRINTED WIRE BOARDS
(CONFORMAL COATINGS) –

Part 2: Methods of test



1 Scope
This part of IEC 61086 gives the methods of test for electrical insulating materials suitable for
application as coatings for loaded printed wire boards (conformal coatings), both as uncured
and after application to specific boards.
2 Normative references
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 60068-2-10:1988, Environmental testing – Part 2-10:Tests – Test J and guidance: Mould
growth
IEC 60068-2-11:1981, Environmental testing - Part 2-11: Tests – Test Ka: Salt mist
IEC 60068-2-14:1984, Environmental testing – Part 2-14: Tests – Test N: Change of
temperature
IEC 60068-2-39:1976, Environmental testing – Part 2-39: Tests – Test Z/AMD: Combined
sequential cold, low air pressure and damp heat test
IEC 60058-2-78:2001, Environmental testing – Part 2-78: Tests – Test Cab: Damp heat,
steady state
IEC 60243-1:1998, Electric strength of insulating materials – Test methods – Part 1: Tests at
power frequencies
IEC 60249-1:1982, Basic materials for printed circuits – Part 1: Test methods
IEC 60455-2:1998, Resin based reactive compounds used for electrical insulation – Part 2:
Methods of test
IEC 60707:1999, Flammability of solid non-metallic materials when exposed to flame sources
– List of test methods
IEC 61086-1, Specification for coatings for loaded printed wire boards (conformal coatings) –
Part 1: Definitions, classification and general requirements
IEC 61086-3 (all parts), Coatings for loaded printed wire boards (conformal coatings) – Part 3:
Specifications for individual materials

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61086-2  IEC:2004 – 13 –
IEC 61086-3-1, Coatings for loaded printed wire boards (conformal coatings) – Part 3:
Specifications for individual materials – Sheet 1: Coatings for general purpose (class I) and
for high reliability (class II)
ISO/DIS 1514:1984, Paints and varnishes – Standard panels for testing
ISO 1519: 2002, Paints and varnishes – Bend test (cylindrical mandrel)
ISO 2808: 1997, Paints and varnishes – Determination of film thickness
ISO 5636-3:1992, Paper and board – Determination of air permeance (medium range) – Part
3: Bendtsen method
3 Test specimens
3.1 Specimen A
3.1.1 Test panel
The test panel shall be as in Figure 1. It comprises
a) an electrode comb for measurement of insulation resistance,
b) a “Y” electrode for measurement of breakdown voltage,
c) eight pads for measurement of thickness.
2
The main body of the panel shall be (100 ± 0,2) mm , with a connection tab (84,0 ± 0,2) mm x
(12,0 ± 0,2) mm (see Figure 1). The reverse side of the panel shall be fully etched.
3.1.2 Preparation
3.1.2.1 Apparatus made of polyolefine or similar material is preferred for the preparation
procedures. Apparatus made of borosilicate glass may also be suitable: it shall be checked by
being rinsed in freshly prepared solvent (as in 3.1.2.2) immediately before use. Solvent
contained in the apparatus shall not decrease in resistivity by more than 10 % over a perio
...