BS-EN-61086-3-1-1995 IEC-61086-3-1-1995.pdf

BRITISH STANDARD BS EN 61086-3-1:1995 IEC 1086-3-1: 1995 Coatings for loaded printed wire boards (conformal coatings) Part 3: Specifications for individual materials Section 3.1 Coatings for general purpose (class I) and for high reliability (class II) The European Standard EN 61086-3-1:1995 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 16:31:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61086-3-1:1995 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 August 1995 © BSI 02-1999 The following BSI references relate to the work on this standard: Committee reference GEL/15 Draft announced in BSI News April 1995 ISBN 0 580 24258 7 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee GEL/15, Insulating material, to panel GEL/15/3/7, Varnishes and resins, upon which the following bodies were represented: British Ceramic Research Ltd. British Industrial Ceramic Manufacturers Association Electrical and Electronic Insulation Association (BEAMA Ltd.) Electricity Association Federation of the Electronics Industry Rotating Electrical Machines Association (BEAMA Ltd.) Transmission and Distribution Association (BEAMA Ltd.) Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 16:31:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61086-3-1:1995 © BSI 02-1999i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Introduction3 1Scope3 2Normative references3 3Designation3 4Property requirements3 Annex ZA (Normative) other international publications quoted in this standard with the references of the relevant European publications5 Table 1 Properties4 List of referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 16:31:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61086-3-1:1995 ii © BSI 02-1999 National foreword This British Standard has been prepared by Technical Committee GEL/15 and is the English language version of EN 61086-3-1:1995 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), published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC 1086-3-1:1995, published by the International Electrotechnical Commission (IEC). A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references Publication referred toCorresponding British Standard BS EN 61086 Coatings for loaded printed wire boards (conformal coatings) EN 61086-1:1995 (IEC 1086-1:1995) Part 1:1995 Definitions, classification and general requirements EN 61086-2:1995 (IEC 1086-2:1995) Part 2:1995 Methods of test Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 16:31:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 61086-3-1 February 1995 ICS 29.040.20 Descriptors: Electrical insulating materials, solid electrical insulating materials, printed-circuit cards, wiring, coatings, designation, specification, characteristics, tables (data) English version Coatings for loaded printed wire boards (conformal coatings) Part 3: Specifications for individual materials Sheet 1: Coatings for general purposes (class I) and for high reliability (class II) (IEC 1086-3-1:1995) Revêtements appliqués sur les cartes de câblage imprimées et dotées de composants conventionnels (revêtements enrobants) Partie 3: Spécifications pour matériaux particuliers Feuille 1: Revêtement pour usage général (classe I) et pour hautes performances (classe II) (CEI 1086-3-1:1995) Beschichtungen für bestückte Leiterplatten (conformal coatings) Teil 3: Anforderungen für einzelne Werkstoffe Blatt 1: Beschichtungen für allgemeine Zwecke (Klasse I) und für hohe Zuverlässigkeit (Klasse II) (IEC 1086-3-1:1995) This European Standard was approved by CENELEC on 1994-07-05. 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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, 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 © 1995 Copyright reserved to CENELEC members Ref. No. EN 61086-3-1:1995 E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 16:31:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61086-3-1:1995 © BSI 02-1999 2 Foreword The text of document 15C(CO)332, future edition 1 of IEC 1086-3-1, 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 61086-3-1 on 1994-07-05. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. In this standard, Annex ZA is normative. Annex ZA has been added by CENELEC. latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 1996-01-01 latest date by which the national standards conflicting with the EN have to be withdrawn(dow) 1996-01-01 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 16:31:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61086-3-1:1995 © BSI 02-19993 Introduction This International Standard forms an element of a series which deals with coatings for loaded printed wire boards (conformal coatings). The series consists of three Parts: Part 1: Definitions, classification and general requirements (IEC 1086-1); Part 2: Methods of test (IEC 1086-2); Part 3: Specifications for individual materials (IEC 1086-3). This standard contains one of the sheets comprising Part 3, that is: Sheet 1: Coatings for general purpose (class I) and high reliability (class II). 1 Scope This sheet of IEC 1086-3 gives the methods of test for electrical insulating materials suitable for application as coatings for loaded printed wire boards (conformal coatings). 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this sheet of IEC 1086-3. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this sheet of IEC 1086-3 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 1086-1:1992, Specification for coatings for loaded printed wire boards (conformal coatings) Part 1: Definitions, classification and general requirements. IEC 1086-2:1992, Specification for coatings for loaded printed wire boards (conformal coatings) Part 2: Methods of test. 3 Designation The designation system for these materials is given in IEC 1086-1. 4 Property requirements The material shall comply with the general requirements of clause 5 of IEC 1086-1. When tested with the relevant method described in IEC 1086-2, the material shall comply with the requirements of Table 1. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 16:31:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61086-3-1:1995 4 © BSI 02-1999 Table 1 Properties NOTEAt the time of publication of this document, there was no agreement as to methods for the measurement of electrical strength and thermal expansion. These properties may be considered necessary by certain users. The test methods and requirements for electrical strength and thermal expansion must therefore be agreed upon between purchaser and supplier. PropertyMethod in IEC 10862 Subclause RequirementRemarks Visual assessment4.1There shall be no voids, holes, wrinkles, peeling, cracking, crazing, roughness of the coating, or discoloration of the conductors. The title of the test panel shall be legible through the coating Visual assessment after thermal cycling 4.2.1.3 Insulation resistance after thermal cycling 4.2.2 Not less than 1 × 1097 Flexibility after thermal cycling 4.2.3There shall be no cracking or crazing Resistance to organic liquids4.3There shall be no removal, cracking or tackiness of the coating Class I coating only Coating removal4.4There shall be no failure to remove the coating without damage to the conductor or substrate Dissipation factor4.5Not more than 0,05 at 1 MHz Insulation resistance after damp heat 4.6 Not less than 1 × 10107 Extent of mould growth4.7Not greater than level 1Class II coating only Shelf life Viscosity4.8.1Not more than 10 % increasea Shelf life Fluorescent tracer 4.8.2No apparent loss of fluorescenceClass I: optional Class II: mandatory Flammability4.9Burning time not greater than 10 s and self-extinguishing in 4 s Tackiness4.10The coating shall be non-tacky Loss of volatile matter4.11Not more than 6 % Not more than 2 % Class I Class II Insulation resistance after thermal ageing 4.12.2.1 Not less than 1 × 10107 Flexibility after thermal ageing 4.12.2.3No cracking or crazing of the coating on any specimen with: 6 mm diameter mandrel 3 mm diameter mandrel Class I Class II Insulation resistance after salt mist 4.13 Not less than 1 × 1087 Visual assessment after extreme altitude and temperature test 4.14.3.1There shall be no voids, holes, wrinkles, peeling, cracking, crazing, roughness of the coating, or discoloration of the conductors. The title of the test panel shall be legible through the coating Class II coating only Insulation resistance after extreme altitude and temperature 4.14.4 Not less than 1 × 10107 Class II coating only a Storage period and temperature to be agreed between purchaser and supplier. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 16:31:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61086-3-1:1995 © BSI 02-19995 Annex ZA (normative) Other international publications quoted in this standard with the references of the relevant 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 NOTEWhen the international publication has been modified by CENELEC common modifications, indicated by (mod), the relevant EN/HD applies. IEC publicationDateTitleEN/HDDate 1086-11992Specification for coatings for loaded printed wire boards (conformal coatings) Part 1: Definitions, classification and general requirements EN 61086-11994 1086-21992Part 2: Methods of testEN 61086-21994 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 16:31:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 blank Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 16:31:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61086-3-1:1995 © BSI 02-1999 List of references See national foreword. 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