1、BRITISH STANDARD Materials for interconnection structures Part 8. Sectional specification set for non-conductive films and coatings Section 7. Marking legend inks The European Standard EN 6124987 : 1996 has the status of a British Standard ICs 31.180 BS EN 61249-8-7 : 1997 IEC 1249-8-7 : 1996 N EXCE
2、PT AS PERMITTED BY COPYRIGHT LAW BS EN 61249-8-7 : 1997 AmdNo. The following BSI references relate to the work on this standard Committee reference EPY52 Draft for comment 9W210666 DC ISBN O 680 27318 O Committees responsible for this British Standard Date Text affected The preparation of this Briti
3、sh Standard was entrusted to Technicd Committee EPMZ, Printed circuits, upon which the following bodies were represented Federation of the Electronics Industry GAMBICA FUMA Ltd.) Nationai Supervising Inspectorate SI PC) Printed Circuit Interconnection Federation Surface Mount and Related Technologie
4、s (SMART Group) 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 March 1997 O BSI 1997 Amendments issued since publication STD.BSI BS EN bL247-8-7-ENGL 1777 Lb2Li
5、bbS 057907b 717 BS EN 61249-8-7 : 1997 National foreword This British Standard has been prepared by Technical Committee EPy52, and is the English ianguage version of EN 61249-87 : 1996 Mutenals for interconnection structures Part 8. Sectional. spe - present to the responsible international/European
6、committee any enquiries on interpretation, or proposais for change, and keep UK interests informed; - monitor related international and European developments and promulgate them in the UK. Cross-references Pubiication referred to EN 60068-2-2 (IEC 68-2-2 : 1974) Corresponding British Standard BS EN
7、6OW Environmental testing BS EN 600682 Test methods BS EN 600682-2 : 1993 Tests B. Dry heat HD 323.2.3 S2 (IEC 68-2-3 : 1969) BS 2011 Environmental testing Part 2.1. Tests PArt 2.1Ca : 1977 Test Cu. Dump heat, steady state HD 323.2.20 S3 Part 2.1T: 1981 %t T Soldering (IEC 68-2-20 : 1979) HD 323.2.3
8、8 S1 (IEC 68-2-38 : 1974) IEC 3262 Part 2.1UAD : 1977 Test WAD. Cornpsite tempemture/humidity cycle test BS 6221 Printed wiring boards Part 2 : 1991 Methods of test NOTE. International and European Standards, as well as overseas standards, are available from Customer Services, BSI, 389 Chiswick High
9、 Road, London W4 U. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 16, an inside back cover and a back cover. Q BSI 1997 1 STDmB
10、SI BS EN b1249-8-7-ENGL 1777 m 1b24bb7 0577077 b53 m EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61 249-8-7 August 1996 ICs 31.180 Descriptors: Materials for interconnection structurer. sectional specification, non-conductive films. coatings. marking legend inks, requirements English versio
11、n Materials for interconnection structures Part 8: Sectional specification set for non-conductive films and coatings Section 7: Marking legend inks (IEC 1 249-8-7: 1 996) Matriaux pour les structures dinterconnexion Partie 8: Collection des spcifications intermdiaires pour films non conducteurs et r
12、evtements Section 7 : Encres de marquage (CE1 1249-8-7:1996) Materialien fr Verbindungsstrukturen Teil 8: Rahmenspezifikationen fr nichtleitende Folien und Beschichtungen Abschnitt 7: Besc hriftungslacke (IEC 1 249-8-7: 1996) * VI * This European Standard was approved by CENBEC on 1996-07-02. CENELE
13、C members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-todate lists and bibliographical references concerning such national standards may be abtaine on applic
14、ation to the Central Secretariat or to any CENELEC member. This European Standard exists in three officiai 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 Secretaria
15、t has the same status as the official versions. CENUK: 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 Europ
16、ean Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central secretariat: Ne de Stassart 35, 6 - 1050 Brussels 1996 Copyright reserved KO CENELEC members Ro. NO. EN 61 249-8-7:1996 E STD-BSI BS EN bL249-7-
17、ENGL 1997 Lb24bb9 0599078 59T Page 2 EN 6 1 249-8-7: 1996 Foreword The text of document 52/603/FOIS, future edition 1 of IEC 1249-8-7, prepared by IEC TC 52, Printed circuits, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61 249-8-7 on 1996-07-02. The following dat
18、es 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) 1 997-04-0 1 with the EN have to be withdrawn (dow) 1997-04-01 - latest date by which the national standards conflicting Annexes designated “n
19、ormative“ are part of the body of the standard. Annexes designated “informative“ are given for information only. In this standard, annex ZA is normative and annexes A and B are informative. Annex ZA has been added by CENELEC. Endorsement notice The text of the International Standard IEC 1249-8-7: 19
20、96 was approved by CENELEC as a European Standard without any modification. Page 3 EN 61249-8-7 : 1996 CONTENTS Al- - Page biiuuse 1 Scope . 2 Normative references 3 Requirements 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 Storage properties . Containers and their markings Adhesion (pressure sensitive tape
21、method) Resistance to solvents. fluxes and soldering . Degree of cure . Abrasion resistance (pencil hardness) Flammability Thermal shock . Solderability . 3.1 O Environmental 4 4 4 4 5 5 5 5 5 6 6 6 6 Annexes A . (informative) Conversion table 9 B . (informative) Bibliography . 14 ZA . (normative) N
22、ormative references to international publications with their corresponding European publications . 15 STD.BS1 BS EN b1249-8-7-ENGL 1777 W LbZ4bb9 0599080 148 m Page 4 EN 61249-8-7 : 1996 MATERIALS FOR INTERCONNECTION STRUCTURES - Part 8: Sectional specification set for non-conductive films and coati
23、ngs - Section 7: Marking legend inks 1 Scope This specification details requirements for the qualification of marking inks used for legends and other identifications used on printed boards. Information in this specification will also provide guidance regarding the suitability of printed boards which
24、 feature marking inks. Requirements for the release of products using marking inks should be included in the customer detail specification (CDS). 2 Normative references .The following normative documents contain provisions which, through reference in this text, constitute provisions of this section
25、of IEC 1249-8. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this section of IEC 1249-8 are encouraged to investigate the possibility of applying the most recent editions of the normative documents i
26、ndicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IEC 68-2-2: 1974. Environmental testing - Part 2: Tests. Test B: Dry Heat IEC 68-2-3: 1969, Basic environmental testing procedures - Pari 2: Tests - Test Ca: Damp heat, steady state IEC 68-2-20: 197
27、9, Environmental testing - Part 2: Tests - Test T: Soldering IEC 68-2-38: 1974, Basic environmental testing procedures - Part 2: Tests - Test ZAD: Composite temperaturdhumidity cyclic test IEC 326-2: 1990, Printed boards - Part 2: Test methods 3 Requirements 3.1 Storage properties Legend marking ink
28、s, or their component compounds, when stored in their original sealed containers under the suppliers specified environmental conditions, shall retain the specified properties until the final date for use (see 3.2 b). Page 6 EN 61249-8-7 : 1996 3.2 Containers and their markings The legend marking ink
29、 shall be supplied in sound, clean, dry containers. In addition to any statutory markings, each container in the consignment shall be clearly marked with the following: a) the type; b) the specified storage temperature and ,humidity, or range thereof, and a final date for use; c) details of mixing a
30、nd curing conditions; d) a distinct lot or batch number, and date of manufacture; e) the quantity in the container; f) the identity of the manufacturer, and place of manufacture. 3.3 Adhesion (pressure sensitive tape method) The material shall be tested in accordance with future IEC 1189-3*, test 3x
31、12. When processed in accordance with the material suppliers instructions, there shall be no evidence of marking ink adhering to the tape. There shall be no separation between the marking ink and the underlying materials. 3.4 Resistance to solvents, fluxes and soldering The cured legend marking ink
32、shall not exhibit any degradation in surface characteristics, such as surface roughness, swelling, blistering, softening, changes of colour, or loss of adhesion when tested in accordance with test method 3C04 of future IEC 1189-3, including the soldering operation. The flux shall be an activated flu
33、x (0,2 %) as specified in 6.6.2 of IEC 68-2-20. - E E - - - _I - * * rn The test specimen shall be a production board, as agreed between customer and supplier. Three samples shall be taken. 3.5 Degree of cure When tested in accordance with future IEC 1189-3, test 3M09, there shall be no softening or
34、 transfer of the material (other than free surface debris) to the lint-free cloth or cotton wool swab. , 3.6 Abrasion resistance (pencil hardness) The hardness of the cured legend marking ink shall be determined by the pencil test in accordance with future IEC 1189-3, test 3M08. The ink supplier sha
35、ll report the limits of hardness that can be expected when the legend marking ink is properly applied and cured. When agreed upon between the customer and supplier, specific requirements regarding hardness shall be met, but in no case shall be less than 2H. See annex B (Bibliography). Page 6 EN 6124
36、9-8-7 : 1996 Class Test method Future IEC 1189-3 1 3N02 3.7 Flammability The addition of a coating of legend marking ink to a printed board shall not reduce the flammability rating (for example: FV-O, FV-1) of the printed board substrate material. Time S 5 3.8 Thermal shock The marking legend ink co
37、ated test specimen shall be preconditioned in accordance with future IEC 1189-1*, test 1PO2, for a minimum of 1 h and a maximum of 4 h. The flux shall be an activated flux (0,2 X) as specified in 6.6.2 of IEC 68-2-20. The test specimen shall not exhibit charring, contamination, softening, or lifting
38、 when tested by thermal shock. Lifting is allowable for class 1 and class 2 products. The test methods, temperatures and times shall be as specified in table 1. I 2 3 I 3N02 I 3N05 5 10 3.8.1 Test specimens Three test specimens, with the marking legend ink coating applied and cured as recommended by
39、 the manufaturer, shall be evaluated. 3.9 Solderability The marking legend ink coating process shall not adversely affect the desired solderability of the printed board, as a result of marking legend bleeding or other contamination, when tested according to test 3x07 of future IEC 1189-3, using an a
40、ctivated flux (0,2 %) as Specified in 6.6.2 Of IEC 68-2-20. 3.9.1 Test specimens Three test specimens, with the marking legend ink coating applied and cured as recommended by the manufacturer, shall be evaluated. 3.1 O Environmental The production printed boards or test specimens shall be cleaned, h
41、andled, and stored so that, at the time of coating the marking legend ink in preparation for environmental testing, the boards or test specirnensshall meet the cleanliness requirements. See annex B (Bibliography). STD-BSI BS EN b12q7-8-7-ENGL 1777 1b24bb7 0577083 757 M Tlme days Page 7 EN 61249-8-7
42、: 1996 Polarizing Minimum voltage requirement (d.c.) in chamber V MR 3.1 O. 1 Insulation resistance The marking legend ink coated printed boards shall have a minimum resistance as specified in the customer detail specification when tested according to test 3E03 of future IEC 1189-3. 3.10.1.1 Test sp
43、ecimens Three test specimens, with the marking legend ink coating applied and cured as recommended by the manufacturer, shall be evaluated. These specimens may also be used for evaluation described in 3.10.2. The referee test shall be performed using a completely coated coupon E from the composite t
44、est pattern in future IEC 326-6-1*. 3.1 0.2 Insulation resistance The insulation resistance of the marking legend coated test board shall be subjected to the conditions of the relevant class, and tested according to test method 3E03 of future IEC 1189-3. The test conditions and minimum requirements
45、for the relevant classes are specified in table 2. Table 2 - Insulation resistance test conditions Class Test conditions IEC 68-2-3 I Test Ca, steady state (93 :i) % RH (40 i 2) C IEC 68-2-3 Test Ca, steady state (93 :i) % RH (40 f 2) *C 2 IEC 68-2-3 Test Ca. steady state (93 :i) % RH (40 i 2) C IEC
46、 68-2-38 (80-96) % RH Test UAD, cyclic 10 cycles of 24 h duration, excluding sub-tero temperatures Minimum requirement after recovery M2 1 O00 lo00 5 O00 NOTE - One of the two methods of test for class 3 shall be agreed between purchaser and supplier. See annex B (Bibliography). STD-BSI BS EN bL247-
47、7-ENGL 1777 1b24bb7 0577089 873 Page 8 EN 61249-8-7 : 1996 Test conditions Storage duration days IEC 68-2-2 56 3.10.2.1 Test specimens Three test specimens, with marking legend coating applied and cured as recommended by the manufacturer, shall be evaluated (3.10.1.1). The referee test shall be perf
48、ormed using coupon E from the composite test pattern in future IEC 326-6-1. Temperat Ure OC 1 O0 3.1 0.3 High temperature storage The marking legend ink coated test specimen shall not exhibit blistering or delamination of the marking legend when exposed to the conditions according to table 3. 3.1 0.
49、3.1 Test specimens Three test specimens, with the marking legend ink coating applied and cured as recommended by the manufacturer, shall be evaluated. - STD-BSI BS EN bL247-8-7-ENGL 1777 m Lb24bb7 0577085 72T m - IEC 1189-1 1 PO1 IEC 1189-1 1 PO2 IEC 1189-1 1 PO3 Page 9 EN 61249-8-7 : 1996 Preconditioning, standard atmospheric conditoning Preconditioning. 125 C IEC 32W9.1.2 Accelerated ageing, steamloxygen IEC 32l9.4 IEC 32l9.1 .i Annex A (informative) IEC 1189-2 iEC 1189-2 IEC 11 89-2 Conversion table 2c01 Resistance to sodium hydroxide 2c02 Qel time of pre
