1、BRITISH STANDARD BS EN 61086-1:2004 Coatings for loaded printed wire boards (conformal coatings) Part 1: Definitions, classification and general requirements The European Standard EN 61086-1:2004 has the status of a British Standard ICS 29.035.20 BS EN 61086-1:2004 This British Standard was publishe
2、d under the authority of the Standards Policy and Strategy Committee on 17 May 2004 BSI 17 May 2004 ISBN 0 580 43793 0 National foreword This British Standard is the official English language version of EN 61086-1:2004. It is identical with IEC 61086-1:2004. It supersedes BS EN 61086-1:1995 which is
3、 withdrawn. The UK participation in its preparation was entrusted by Technical Committee GEL/15, Insulating material, to Subcommittee GEL/15/3, Material specifications, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secreta
4、ry. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogu
5、e or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the
6、text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front
7、cover, an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 61086-1 NORME EUROPENN
8、E EUROPISCHE NORM April 2004 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2004 CENELEC - All rights of exploitation in any fo
9、rm and by any means reserved worldwide for CENELEC members. Ref. No. EN 61086-1:2004 E ICS 29.035.20 Supersedes EN 61086-1:1994English version Coatings for loaded printed wire boards (conformal coatings) Part 1: Definitions, classification and general requirements (IEC 61086-1:2004) Revtements appli
10、qus sur les cartes de cblage imprimes (revtements enrobants) Partie 1: Dfinitions, classification et exigences gnrales (CEI 61086-1:2004) Beschichtungen fr bestckte Leiterplatten (conformal coatings) Teil 1: Begriffe, Einteilung und allgemeine Anforderungen (IEC 61086-1:2004) This European Standard
11、was approved by CENELEC on 2004-03-01. 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 s
12、uch 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
13、 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, Lith
14、uania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Foreword The text of document 15C/1544/FDIS, future edition 2 of IEC 61086-1, prepared by SC 15C, Specifications, of IEC TC 15, Insulating materials, was submitted to t
15、he IEC-CENELEC parallel vote and was approved by CENELEC as EN 61086-1 on 2004-03-01. This European Standard supersedes EN 61086-1:1994. This edition includes the following significant technical changes from EN 61086-1:1994: a) a Class 3 material for aerospace applications has been included; b) a ne
16、w resin type (oligomeric blend material) has 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) 2004-12-01 latest date by which the national standards conflicting wit
17、h the EN have to be withdrawn (dow) 2007-03-01 _ Endorsement notice The text of the International Standard IEC 61086-1:2004 was approved by CENELEC as a European Standard without any modification. _ Page2 EN610861:2004INTRODUCTION This International Standard forms part of a series published under th
18、e 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 tests (IEC 61086-2) Part 3: Specifications for individual materials (IEC 61086-3) Page3 EN61
19、0861:2004COATINGS FOR LOADED PRINTED WIRE BOARDS (CONFORMAL COATINGS) Part 1: Definitions, classification and general requirements 1 Scope This part of IEC 61086 gives the definitions, classification and general requirements for electrical insulating materials suitable for application as coatings fo
20、r loaded printed wire boards (conformal coatings). This standard excludes requirements for compatibility between such coatings and printed wire boards, this characteristic being evaluated in individual applications. Surface modifiers are not classified as conformal coatings. They only provide a thin
21、 film that does not cure and has low mar resistance. They are excluded from this standard. Materials which conform to this standard meet established levels of performance. However, the selection of a material by a user for a specific application should be based on the actual requirements necessary f
22、or adequate performance in that application and not based on this standard alone. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 conformal coating electrical insulating material applied as a coating to loaded printed wire boards to produce a
23、 thin layer conforming to the surface in order to provide a protective barrier against deleterious effects from environmental conditions 2.2 surface modifier non-curing hydrophobic material, applied as a surface layer of thickness 1 m to 2 m to a loaded printed wiring board to protect against delete
24、rious effects from environmental conditions by changing the surface characteristics 2.3 oligomeric oligomeric blended material derived from a low molecular mass acrylic material and other low molecular mass reactive materials (for example, polyester, epoxy, etc.), possibly with other additions to gi
25、ve specific properties 3 Classification The types of conformal coatings covered by this standard shall be identified according to a code consisting of: Number: indicating the classification of the material; Letter: indicating the resin type, and Suffix number distinguishing between the variants of e
26、ach of the resin types. Page4 EN610861:2004The first number of the code shall indicate the classification of the material: Class 1 General purpose Class 2 High reliability Class 3 Aerospace applications The code letters for the different resin types and the methods of application are indicated in th
27、e Table 1. Table 1 Basic resins Resin type Code Method of application Acrylic A Dip, brush and spray Epoxy EP Dip, brush and spray Silicone Si Dip, brush and spray Polyurethane PUR Dip, brush and spray Oligomeric blend material OL Dip, brush and spray, UV curable Paraxylylene XY Vacuum deposition NO
28、TE Additional resin types may be incorporated later, for example, polyester or phenolic resin. The suffix number is inserted after the code letters for each resin type and is interpreted as follows: Suffix 1: indicates that the conformal coating is water based. Suffix 2: indicates that the conformal
29、 coating is capable of being removed from the printed wire board by means of an appropriate solvent. NOTE Suffixes 3, 4, 5, etc. may be introduced later to cover other variants of each resin type. EXAMPLE Conformal coatings of type IEC 61086-1-PUR-1,2 denotes a general purpose material based on poly
30、urethane which is water-based and removable with a suitable solvent. 4 General requirements 4.1 Containers and marking of containers 4.1.1 Containers The conformal coating or its components shall be supplied in adequate strong, sound and clean containers. 4.1.2 Marking of containers Each container s
31、hall be marked with at least the following information: a) the number of this standard; b) the designation code of the material; c) the lot or batch number; d) the manufacturers name or recognized trade mark; e) the final date for use; Page5 EN610861:2004f) any hazard warning notices, for example fl
32、ammability (flash point) and toxicity; g) the quantity in the container. 4.2 Storage properties Conformal coatings or their components, when stored in their original sealed containers under specified temperature conditions, shall retain the specified properties up to the final date for use (see 4.1.
33、2 e). 4.3 Pot life When removed from the original sealed container or, in the case of two-pack materials, after the components are mixed, the conformal coating shall remain suitable for use after exposure to a temperature of (23 2) C and a relative humidity of (50 5) %, for the period stated by the
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