1、BRITISH STANDARDBS EN 61249-4-11: 2005Materials for printed boards and other interconnecting structures Part 4-11: Sectional specification set for prepreg materials, unclad Non-halogenated epoxide, woven E-glass prepreg of defined flammabilityThe European Standard EN 61249-4-11:2005 has the status o
2、f a British StandardICS 31.180g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Thu Apr 20 03:08:58 BST 2006, Uncontrolle
3、d Copy, (c) BSIBS EN 61249-4-11:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 1 February 2006 BSI 1 February 2006ISBN 0 580 47349 XNational forewordThis British Standard is the official English language version of EN 61249-4-11:2005. It
4、 is identical with IEC 61249-4-11:2005.The UK participation in its preparation was entrusted to Technical Committee EPL/501, Electronic assembly technology, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquirie
5、s on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standa
6、rds 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 Catalogue or of British Standards Online.This p
7、ublication 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.Summary of pagesThis document comprises a front cover, an inside front cov
8、er, the EN title page, pages 2 to 13 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsLicensed Copy: Wang Bin, na, Thu Apr 20 03:08:58 BST 2006, Uncontrolled Copy, (c) BSIEUROPEAN
9、 STANDARD EN 61249-4-11 NORME EUROPENNE EUROPISCHE NORM October 2005 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 2005 CENELE
10、C - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61249-4-11:2005 E ICS 31.180 English version Materials for printed boards and other interconnecting structures Part 4-11: Sectional specification set for prepreg materials, unclad Non-halo
11、genated epoxide, woven E-glass prepreg of defined flammability (IEC 61249-4-11:2005) Matriaux pour circuits imprims et autres structures dinterconnexion Partie 4-11 : Srie de spcifications intermdiaires pour matriaux primprgns, non plaqus Tissu de verre poxyde primprgn de type E non halogn dinflamma
12、bilit dfinie (CEI 61249-4-11:2005) Materialien fr Leiterplatten und andere Verbindungsstrukturen Teil 4-11: Rahmenspezifikationen fr unkaschierte Prepreg-Materialien Mit E-Glasgewebe verstrkte halogenfreie Epoxidharz-Prepregs mit definierter Brennbarkeit (IEC 61249-4-11:2005) This European Standard
13、was approved by CENELEC on 2005-09-01. 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
14、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
15、 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
16、uania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Wang Bin, na, Thu Apr 20 03:08:58 BST 2006, Uncontrolled Copy, (c) BSIForeword The text of document 91/528/FDIS, future edition 1 of IEC 61249-4-11, prep
17、ared by IEC TC 91, Electronics assembly technology, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61249-4-11 on 2005-09-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national s
18、tandard or by endorsement (dop) 2006-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2008-09-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61249-4-11:2005 was approved by CENELEC as a Europe
19、an Standard without any modification. _ EN 61249-4-11:2005 2 Licensed Copy: Wang Bin, na, Thu Apr 20 03:08:58 BST 2006, Uncontrolled Copy, (c) BSI 3 EN 61249-4-11:2005 CONTENTS 1 Scope 4 2 Normative references .4 3 Materials and construction 5 3.1 Reinforcement .5 3.2 Resin system.5 4 Properties 5 4
20、.1 Properties related to the appearance of the prepreg .5 4.2 Properties related to B-stage prepreg.6 4.3 Properties related to C stage prepreg after curing 7 5 Delivery form8 5.1 Rolls .9 5.2 Sheets.9 5.3 Cut panels.9 6 Quality assurance.9 6.1 Quality system.9 6.2 Responsibility for inspection 9 6.
21、3 Qualification inspection9 6.4 Quality conformance inspection .9 6.5 Certificate of conformance .10 6.6 Safety data sheet 10 7 Packaging and marking 10 8 Shelf life.10 9 Ordering Information.11 Bibliography .12Annex ZA (normative) Normative references to international publications with their corres
22、ponding European publications13 Table 1 Flammability8 Licensed Copy: Wang Bin, na, Thu Apr 20 03:08:58 BST 2006, Uncontrolled Copy, (c) BSIEN 61249-4-11:2005 4 MATERIALS FOR PRINTED BOARDS AND OTHER INTERCONNECTING STRUCTURES Part 4-11: Sectional specification set for prepreg materials, unclad Non-h
23、alogenated epoxide, woven E-glass prepreg of defined flammability 1 Scope This part of IEC 61249 gives requirements for properties of prepreg that is mainly intended to be used as bonding sheets in connection with laminates according IEC 61249-2-7 when manufacturing multilayer boards according to IE
24、C 62326-4. This material may be also used to bond other types of laminates. Prepreg according to this standard is of defined flammability (vertical burning test). The flammability rating on fully cured prepreg is achieved through the use of non-halogenated fire retardants contained as an integral pa
25、rt of the polymeric structure. After lamination according to the suppliers instructions, the glass transition temperature is defined to be 120 C minimum. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the e
26、dition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 61189-2:1997, Test methods for electrical materials, interconnecting structures and assemblies Part 2: Test methods for materials for interconnecting structures Amendme
27、nt 1 (2000) IEC 61249-2-7:2002, Materials for printed boards and other interconnecting structures Part 2-7: Reinforced base materials clad and unclad - Epoxide woven E-glass laminated sheet of defined flammability (vertical burning test), copper-clad IEC 61249-6-3, Material for printed boards and ot
28、her interconnecting structures Part 6-3: Sectional specification set for reinforcement materials Woven E-glass (for the manufacture of prepregs and copper-clad base materials1IEC 62326-4, Printed boards Part 4: Rigid multilayer printed boards with interlayer connections - Sectional specification ISO
29、 9000:2000, Quality management systems Fundamentals and vocabulary ISO 11014-1:1994, Safety data sheet for chemical products Part 1: Content and order of sections _ 1In preparation. Licensed Copy: Wang Bin, na, Thu Apr 20 03:08:58 BST 2006, Uncontrolled Copy, (c) BSI 5 EN 61249-4-11:2005 3 Materials
30、 and construction The prepreg consists of a reinforcing E-glass fabric which is impregnated with epoxide resin and partially cured to the B-stage. 3.1 Reinforcement The reinforcement consists of woven E-glass as specified in IEC 61249-6-3: Woven E-glass fabric (for the manufacture of prepreg and cop
31、per-clad laminate). 3.2 Resin system The resin consists of a non-halogenated epoxide resin with a glass transition temperature of 120 C when cured according the manufacturers recommendation. The maximum total halogens contained in the resin plus reinforcement matrix is 1 5006with a maximum chlorine
32、of 9006and maximum bromine being 9006. Contrast agents may be added to enhance processing such as optical inspection. Its flame resistance is defined in terms of the flammability requirements of 4.3.2. 4 Properties 4.1 Properties related to the appearance of the prepreg The prepreg shall be substant
33、ially free from defects that may have an impact on the materials fitness for use for the intended purpose. For the following specific defects the requirements given shall apply when inspection is made in accordance with IEC 61189-2 method 2V01 (under consideration). 4.1.1 Dewetted areas (fish eyes)
34、Dewetted areas with a diameter 10 mm are not permissible. Dewetted areas with a diameter 10 mm are permitted to an extent of a maximum 10 fish eyes in any 300 x 300 mm area of the prepreg. 4.1.2 Broken filaments When judging the presence of broken filaments, their sizes and frequency of occurrence a
35、re important for assessing acceptability, but also the flow characteristic of the prepreg must be taken into consideration. The acceptance conditions for broken filaments shall be as agreed upon between the user and supplier. 4.1.3 Distortion When the prepreg is tested in accordance with test method
36、 2M29 (under consideration) of IEC 61189-2, the distortion of the fill yarns in the glass fabric shall not exceed 10 % measured over any 300 mm test distance. Licensed Copy: Wang Bin, na, Thu Apr 20 03:08:58 BST 2006, Uncontrolled Copy, (c) BSIEN 61249-4-11:2005 6 4.1.4 Creases Creases caused by han
37、dling of the prepreg where only a negligible loss of resin has occurred are permitted. Creases where the glass yarns are exposed due to loss of resin are not permitted. 4.1.5 Edge conditions Cut-to-size panels shall have even edges and shall not show loss of resin at the edge due to the cutting proc
38、ess of more than 8 mm. Excessive occurrence of resin dust released during the cutting shall be removed before packaging for shipment. 4.2 Properties related to B-stage prepreg A number of characteristics can describe thickness, reactivity and rheology of B-stage prepreg. The choice of characteristic
39、s to be used as qualification and quality conformance testing as well as the nominal performance levels are as agreed upon between the user and supplier. Several of the characteristics shown below are interrelated and should not be specified individually. Ordering requirements should preferably be r
40、estricted to the glass style, one characteristic marked (a) in combination with one characteristic marked (b). A maximum of one optional characteristic (c) of B-stage prepreg may be included. Glass style Thickness parameter Resin content (a) Treated weight (a) Reactivity/rheology parameter Resin flo
41、w (b) Scaled flow thickness (b) Melt viscosity (b) Cured thickness (b) Optional parameter Volatile content (c) Gel time (c) 4.2.1 Resin content When tested in accordance with test method 2C03 of IEC 61189-2, the nominal resin content shall be as agreed upon between the user and supplier. The toleran
42、ce around the ordered nominal value shall be 3 %, e.g. (45 3) %. Licensed Copy: Wang Bin, na, Thu Apr 20 03:08:58 BST 2006, Uncontrolled Copy, (c) BSI 7 EN 61249-4-11:2005 4.2.2 Treated weight When tested in accordance with test method 2C03 of IEC 61189-2, the nominal treated weight shall be as agre
43、ed upon between the user and supplier. The tolerance around the ordered nominal value shall be 4 %, e.g. (15,0 0,6) g. 4.2.3 Cured thickness The nominal thickness and the tolerance of the cured prepreg using the users lamination cycle shall be as agreed upon between the user and supplier. 4.2.4 Resi
44、n flow When tested in accordance with test method 2M09 of IEC 61189-2, the nominal resin flow shall be as agreed upon between the user and supplier. The tolerance around the ordered nominal value shall be 8 %, e.g. (25 8) %. 4.2.5 Scaled flow thickness When tested in accordance with test method 2M26
45、 of IEC 61189-2, the nominal scaled flow and the tolerance shall be as agreed upon between the user and supplier. 4.2.6 Melting viscosity When tested in accordance with test method 2C09 of IEC 61189-2, the nominal melt viscosity shall be as agreed upon between the user and supplier. 4.2.7 Gel time W
46、hen tested in accordance with test method 2C02 of IEC 61189-2, the nominal gel time shall be as agreed upon between the user and supplier. The tolerance around the ordered nominal value shall be 35 s, e.g. (160 35) s. 4.2.8 Volatile content When tested in accordance with test method 2C04 of IEC 6118
47、9-2, the nominal volatile content shall be 2,0 % maximum. 4.3 Properties related to C stage prepreg after curing 4.3.1 Electric strength A total of 2 plies of prepreg of minimum size 300 mm 300 mm shall be bonded together and cured in accordance with the manufacturers recommendations whereupon the t
48、hickness shall be determined using a micrometer. When tested in accordance with test method 2E11 (under consideration) of IEC 61189-2, the minimum electric strength flow shall be 25 V/m. Licensed Copy: Wang Bin, na, Thu Apr 20 03:08:58 BST 2006, Uncontrolled Copy, (c) BSIEN 61249-4-11:2005 8 4.3.2 F
49、lammability A number of plies of minimum size 300 mm 300 mm of the prepreg under test shall be bonded together and cured in accordance with the manufacturers recommendations. The number of plies shall be chosen so that a specimen thickness of approximately 0,30,4 mm is obtained as measured with a micrometer. When tested in accordance with test method 2C06 of IEC 61189-2, the nominal flammability shall be as shown in Table 1.
