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1、a Date: 20 April 2007 Origin: International Latest date for receipt of comments: 31 July 2007 Project no.: 2007/00979 Responsible committee: EPL/501 Electronic assembly technology Interested committees: Title: Draft BS EN 61249-2-38 ED.1 Materials for printed boards and other interconnecting structu
2、res - Part 2-38: Reinforced base materials clad and unclad - Non-halogenated epoxide woven E-glass laminated sheets of defined flammability (vertical burning test), copper-clad for lead-free assembly Supersession information: If this document is published as a standard, the UK implementation of it w
3、ill supersede NONE and partially supersede. NONE If you are aware of a current national standard which may be affected, please notify the secretary (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT BE REGARDED OR USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 31 July 2007.
4、 This draft is issued to allow comments from interested parties; all comments will be given consideration prior to publication. No acknowledgement will normally be sent. See overleaf for information on commenting. No copying is allowed, in any form, without prior written permission from BSI except a
5、s permitted under the Copyright, Designs and Patent Act 1988 or for circulation within a nominating organization for briefing purposes. Electronic circulation is limited to dissemination by e-mail within such an organization by committee members. Further copies of this draft may be purchased from BS
6、I Customer Services, Tel: +44(0) 20 8996 9001 or email ordersbsi-. British, International and foreign standards are also available from BSI Customer Services. British Standards on CD or Online are available from British Standards Publishing Sales Limited. Tel: 01344 404409 or email bsonlinetechindex
7、.co.uk. Information on the co-operating organizations represented on the committees referenced above may be obtained from the responsible committee secretary. Cross-references The British Standards which implement International or European publications referred to in this draft may be found via the
8、British Standards Online Service on the BSI web site http:/www.bsi-. Direct tel: 020 8996 7205 Responsible Committee Secretary: Mr A Ashrafi (BSI) E-mail: asghar.ashrafibsi- Draft for Public Comment Head Office 389 Chiswick High Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 700
9、1 Form 36 Version 7.0 DPC: 07/30164997 DC Licensed Copy: London South Bank University, London South Bank University, Mon May 07 12:31:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI b Introduction This draft standard is based on international discussions in which the UK has taken an active part. Your
10、comments on this draft are welcome and will assist in the preparation of the consequent standard. If no comments are received to the contrary, then the UK will approve this draft. There is a high probability that this text could be adopted by CENELEC as a reference document for harmonization or as a
11、 European Standard. Recipients of this draft are requested to comment on the text bearing in mind this possibility. UK Vote Please indicate whether you consider the UK should submit a negative (with reasons) or positive vote on this draft. Submission The guidance given below is intended to ensure th
12、at all comments receive efficient and appropriate attention by the responsible BSI committee. Annotated drafts are not acceptable and will be rejected. All comments must be submitted, preferably electronically, to the Responsible Committee Secretary at the address given on the front cover. Comments
13、should be compatible with Version 6.0 or Version 97 of Microsoft Word for Windows, if possible; otherwise comments in ASCII text format are acceptable. Any comments not submitted electronically should still adhere to these format requirements. All comments submitted should be presented as given in t
14、he example below. Further information on submitting comments and how to obtain a blank electronic version of a comment form are available from the BSI web site at: http:/www.bsi- Template for comments and secretariat observations Date: xx/xx/200x Document: ISO/DIS xxxxx 1 2 (3) 4 5 (6) (7) MB Clause
15、 No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/ Note (e.g. Table 1) Type of com- ment Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted 3.1 Definition 1 ed Definition is ambiguous and needs clarifying. Amend to re
16、ad . so that the mains connector to which no connection . 6.4 Paragraph 2 te The use of the UV photometer as an alternative cannot be supported as serious problems have been encountered in its use in the UK. Delete reference to UV photometer. Microsoft and MS-DOS are registered trademarks, and Windo
17、ws is a trademark of Microsoft Corporation. Licensed Copy: London South Bank University, London South Bank University, Mon May 07 12:31:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI FORM CDV (IEC) 2005-09-23 91/661/CDV COMMITTEE DRAFT FOR VOTE (CDV) PROJET DE COMIT POUR VOTE (CDV) Project number IEC
18、 61249-2-38, Ed. 1 Numro de projet IEC/TC or SC: TC 91 CEI/CE ou SC: Secretariat / Secrtariat Japan Submitted for parallel voting in CENELEC Soumis au vote parallle au CENELEC Date of circulation Date de diffusion 2007-04-06 Closing date for voting (Voting mandatory for P-members) Date de clture du
19、vote (Vote obligatoire pour les membres (P) 2007-09-07 Also of interest to the following committees Intresse galement les comits suivants Supersedes document Remplace le document 91/660/NP Functions concerned Fonctions concernes Safety Scurit EMC CEM Environment Environnement Quality assurance Assur
20、ance qualit CE DOCUMENT EST TOUJOURS LTUDE ET SUSCEPTIBLE DE MODIFICATION. IL NE PEUT SERVIR DE RFRENCE. LES RCIPIENDAIRES DU PRSENT DOCUMENT SONT INVITS PRSENTER, AVEC LEURS OBSERVATIONS, LA NOTIFICATION DES DROITS DE PROPRIT DONT ILS AURAIENT VENTUELLEMENT CONNAISSANCE ET FOURNIR UNE DOCUMENTATION
21、 EXPLICATIVE. THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE. IT SHOULD NOT BE USED FOR REFERENCE PURPOSES. RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION. Ti
22、tre : Title : IEC 61249-2-38, Ed. 1: Materials for printed boards and other interconnecting structures - Part 2-38: Reinforced base materials clad and unclad Non-halogenated epoxide woven E-glass laminated sheets of defined flammability (vertical burning test), copper-clad for lead-free assembly Not
23、e dintroduction Introductory note Ce CDV est diffus selon la procdure indique dans le doc. AC/8/2003 selon laquelle un NP est diffus en parallle avec son CDV. This CDV is issued in application of the procedure in AC/8/2003 for the simultaneous submission of a NP and its CDV. If the 91/660/NP is acce
24、pted, this CDV ballot will continue and the project will be considered as being at CDV stage. If the NP is not approved, CDV ballot will be cancelled. ATTENTION VOTE PARALLLE CEI CENELEC Lattention des Comits nationaux de la CEI, membres du CENELEC, est attire sur le fait que ce projet de comit pour
25、 vote (CDV) de Norme internationale est soumis au vote parallle. Un bulletin de vote spar pour le vote CENELEC leur sera envoy par le Secrtariat Central du CENELEC. ATTENTION IEC CENELEC PARALLEL VOTING The attention of IEC National Committees, members of CENELEC, is drawn to the fact that this Comm
26、ittee Draft for Vote (CDV) for an International Standard is submitted for parallel voting. A separate form for CENELEC voting will be sent to them by the CENELEC Central Secretariat. Copyright 2007 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this
27、electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions. You may not copy or “mirror“ the file or printed version of the document, or any part of it, for any other purpose without permission in writing from IEC. Licensed Copy: Londo
28、n South Bank University, London South Bank University, Mon May 07 12:31:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI IEC 61249-2-38 IEC 2 91/661/CDV CONTENTS 1 Scope 6 2 Normative references.6 3 Materials and construction .6 3.1 Resin System6 3.2 Metal foil.6 3.3 Reinforcement 7 4 Internal marking.
29、7 5 Electrical Properties.7 6 Non-Electrical properties of the copper-clad laminate .7 6.1 Appearance of the copper-clad sheet 7 6.1.1 Indentations (pits and dents)8 6.1.2 Wrinkles8 6.1.3 Scratches8 6.1.4 Raised areas.8 6.1.5 Surface waviness 9 6.2 Appearance of the unclad face 9 6.3 Laminate Thickn
30、ess 9 6.4 Bow and twist9 6.5 Properties related to the copper foil bond. .10 6.6 Punching and machining .11 6.7 Dimensional stability .11 6.8 Sheet sizes.12 6.8.1 Typical sheet sizes12 6.8.2 Tolerances for sheet sizes.12 6.9 Cut panels 12 6.9.1 Cut panel sizes12 6.9.2 Size tolerances for cut panels1
31、2 6.9.3 Rectangularity of cut panels.13 7 Non-electrical properties of the base material after complete removal of the copper foil.13 7.1 Appearance of the dielectric base material 13 7.2 Flexural Strength 14 7.3 Flammability .14 7.4 Water absorption.15 7.5 Measling. 15 7.6 Glass transition temperat
32、ure and cure factor .15 7.7 Decomposition Temperature16 7.8 Thermal Resistance 16 7.9 Z-Axis Expansion 16 8 Quality assurance 16 8.1 Quality system 16 8.2 Responsibility for inspection17 8.3 Qualification inspection .17 8.4 Quality conformance inspection.17 8.5 Certificate of conformance 17 8.6 Safe
33、ty data sheet17 Licensed Copy: London South Bank University, London South Bank University, Mon May 07 12:31:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI IEC 61249-2-38 IEC 3 91/661/CDV 9 Packaging and marking17 10 Ordering information 18 Annex A Engineering information 19 Annex B - Common laminate
34、constructions 21 Annex C - Guideline for qualification and conformance inspection 22 Licensed Copy: London South Bank University, London South Bank University, Mon May 07 12:31:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI IEC 61249-2-38 IEC 4 91/661/CDV INTERNATIONAL ELECTROTECHNICAL COMMISSION Mat
35、erials for printed boards and other interconnecting structures - Part 2-38: Reinforced base materials clad and unclad Non-halogenated epoxide woven E-glass laminated sheets of defined flammability (vertical burning test), copper-clad for lead-free assembly FOREWORD 1) The IEC (International Electrot
36、echnical Commission) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote international cooperation on all questions concerning standardization in the electrical and electronic fields. To th
37、is end and in addition to other activities, the IEC publishes International Standards. 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 or
38、ganizations liaising with the IEC also participate in this preparation. The 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 the IEC on
39、technical matters express, as nearly as possible, an international consensus of opinion on relevant subjects since each technical committee has representation from all interested National Committees. 3) The documents produced have the form of recommendations for international use and are published i
40、n the form of standards, technical specifications, technical reports or guides and they are accepted by the National Committees in that sense. 4) In order to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent
41、possible in their national and regional standards. Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter. 5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipm
42、ent declared to be in conformity with one of its standards. 6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights. International Standa
43、rd IEC 61249-2-38 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/XXX/FDIS 91/XXX/RVD Full information on the voting for the approval of this standard can be found in the report
44、on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 3. Annex A is Informative IEC 61249-2-35 consists of the following parts, under the general title Materials for interconnection structures-Part 2: Sectional specification set for
45、 reinforced base materials clad and unclad - Section 35: Modified epoxide woven E-glass laminated sheet of defined flammability (vertical burning test), copper-clad for lead-free soldering. IEC 61249-2-1: Part 2: Sectional specification set for reinforced base materials, clad and unclad Section 1: P
46、henolic cellulose paper laminate, economic grade IEC 61249-2-2: Part 2: Sectional specification set for reinforced base materials, clad and unclad Section 2: Phenolic cellulose paper laminate, high electrical grade Licensed Copy: London South Bank University, London South Bank University, Mon May 07
47、 12:31:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI IEC 61249-2-38 IEC 5 91/661/CDV IEC 61249-2-4: Part 2: Sectional specification set for reinforced base materials, clad and unclad Section 4: Polyester non-wove/woven fibre laminated sheet of defined flammability (vertical burning test), copper-cla
48、d IEC 61249-2-9 Part 2: Sectional Specification set for reinforced base materials clad and unclad - Section 9: Bismaleimide/triazine, Non-halogenated epoxide modified or unmodified, woven E-glass laminated sheet of defined flammability (vertical burning test), copper-clad. IEC 61249-2-10: Part 2:Sec
49、tional Specification set for reinforced base materials clad and unclad - Section 10: Cyanate ester, Non-halogenated epoxide modified or unmodified, woven E-glass laminated sheet of defined flammability (vertical burning test), copper- clad. IEC 61249-2-11: Part 2: Sectional Specification set for reinforced base materials clad and unclad - Section 11: Polyimide, Non-halogenated epoxide modif