1、BRITISH STANDARDBS EN 61249-4-5: 2005Materials for printed boards and other interconnecting structures Part 4-5: Sectional specification set for prepreg materials, unclad Polyimide, modified or unmodified, woven E-glass prepreg of defined flammabilityThe European Standard EN 61249-4-5:2005 has the s
2、tatus of a British StandardICS 31.180g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Thu Apr 20 03:07:28 BST 2006, Unco
3、ntrolled Copy, (c) BSIBS EN 61249-4-5:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 1 February 2006 BSI 1 February 2006ISBN 0 580 47350 3National forewordThis British Standard is the official English language version of EN 61249-4-5:200
4、5. It is identical with IEC 61249-4-5:2005. 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 enq
5、uiries 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 S
6、tandards 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.T
7、his 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.Summary of pagesThis document comprises a front cover, an inside fron
8、t cover, 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 03:07:28 BST 2006, Uncontrolled Copy, (c) BSIEUR
9、OPEAN STANDARD EN 61249-4-5 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 CE
10、NELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61249-4-5:2005 E ICS 31.180 English version Materials for printed boards and other interconnecting structures Part 4-5: Sectional specification set for prepreg materials, unclad - Poly
11、imide, modified or unmodified, woven E-glass prepreg of defined flammability (IEC 61249-4-5:2005) Matriaux pour circuits imprims et autres structures dinterconnexion Partie 4-5: Srie de spcifications intermdiaires pour matriaux primprgns, non plaqus Polyimide, modifi ou non modifi, tissu de verre pr
12、imprgn de type E dinflammabilit dfinie (CEI 61249-4-5:2005) Materialien fr Leiterplatten und andere Verbindungsstrukturen Teil 4-5: Rahmenspezifikationen fr unkaschierte Prepreg-Materialien Mit E-Glasgewebe verstrkte Prepregs auf der Basis von modifiziertem oder unmodifiziertem Polyimidharz mit defi
13、nierter Brennbarkeit (IEC 61249-4-5:2005) This European Standard 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 alterat
14、ion. 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 tran
15、slation 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France
16、, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Wang Bin, na, Thu Apr 20 03:07:28 BST 2006, Uncontrolled Copy, (c) BSIForeword The text
17、of document 91/527/FDIS, future edition 1 of IEC 61249-4-5, prepared by IEC TC 91, Electronics assembly technology, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61249-4-5 on 2005-09-01. The following dates were fixed: latest date by which the EN has to be implemen
18、ted at national level by publication of an identical national standard 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 S
19、tandard IEC 61249-4-5:2005 was approved by CENELEC as a European Standard without any modification. _ EN 61249-4-5:2005 2 Licensed Copy: Wang Bin, na, Thu Apr 20 03:07:28 BST 2006, Uncontrolled Copy, (c) BSI 3 EN 61249-4-5:2005 CONTENTS 1 Scope .42 Normative references 43 Materials and construction
20、.53.1 Reinforcement 53.2 Resin system54 Properties .54.1 Properties related to the appearance of the prepreg 54.2 Properties related to B-stage prepreg64.3 Properties related to prepreg after curing 75 Delivery form .85.1 Rolls 85.2 Sheets85.3 Cut panels 96 Quality assurance96.1 Quality system. 96.2
21、 Responsibility for inspection .96.3 Qualification inspection.96.4 Quality conformance inspection 96.5 Certificate of conformance 96.6 Safety data sheet .97 Packaging and marking .108 Shelf life109 Ordering information 10Bibliography 12Annex ZA (normative) Normative references to international publi
22、cations with theircorresponding European publications 13Table 1 Flammability 8 .Licensed Copy: Wang Bin, na, Thu Apr 20 03:07:28 BST 2006, Uncontrolled Copy, (c) BSIEN 61249-4-5:2005 4 MATERIALS FOR PRINTED BOARDS AND OTHER INTERCONNECTING STRUCTURES Part 4-5: Sectional specification set for prepreg
23、 materials, unclad Polyimide, modified or unmodified, 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 61249-2-11 when manufacturin
24、g multilayer boards according to IEC 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 brominated fire retardan
25、ts contained as an integral part of the polymeric structure. After curing according to the suppliers instructions, the glass transition temperature is defined to be 170 C minimum. 2 Normative references The following referenced documents are indispensable for the application of this document. For da
26、ted references, only the edition 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, printed boards and other inter-connecting structures and assemblies Part 2: Test methods
27、for materials for interconnection structures Amendment 1 (2000) IEC 61249-2-11, Materials for printed boards and other interconnecting structures Part 2-11: Sectional specification set for reinforced base materials clad and unclad Polyimide woven E-glass laminated sheet of defined flammability coppe
28、r-clad IEC 61249-6-3, Material for printed boards and other interconnecting structures Part 6-3: Sectional specification set for reinforcement materials Woven E-glass (for the manufacture of prepregs and copper-clad base materials1IEC 62326-4:1996, Printed boards Part 4: Rigid multilayer printed boa
29、rds with interlayer connections - Sectional specification ISO 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 ISO 14001:2004, Environmental management systems Requirements with guidance
30、for use 1In preparation. Licensed Copy: Wang Bin, na, Thu Apr 20 03:07:28 BST 2006, Uncontrolled Copy, (c) BSI 5 EN 61249-4-5:2005 3 Materials and construction The prepreg consists of a reinforcing E-glass fabric which is impregnated with polyimide resin and partially cured to the B-stage. 3.1 Reinf
31、orcement Woven E-glass as specified in IEC 61249-6-3: Woven E-glass fabric (for the manufacture of prepreg and copper-clad laminate). 3.2 Resin system Polyimide, modified or unmodified, resulting in a cured laminate with a glass transition temperature of 170 C minimum. Contrast agents may be added t
32、o enhance processing such as automated 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 substantially free from defects that may have an impact on the mate
33、rials 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) Dewetted areas with a diameter 10 mm are not permissible.
34、Dewetted areas with a diameter 10 mm are permitted to an extent of a maximum 10 fish eyes in any 300 300 mm area of the prepreg. 4.1.2 Broken filaments When judging the presence of broken filaments their sizes and frequency of occurrence are important for assessing acceptability but also the flow ch
35、aracteristic 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 2M29 (under consideration) of IEC 61189-2, the distortion or
36、non-perpendicular orientation of the fill or weft yarns in the glass fabric shall not exceed 10 % measured over any 300 mm test distance. 4.1.4 Creases Creases caused by handling of the prepreg where only a negligible loss of resin has occurred are permitted. Creases where the glass yarns are expose
37、d due to loss of resin are not permitted. Licensed Copy: Wang Bin, na, Thu Apr 20 03:07:28 BST 2006, Uncontrolled Copy, (c) BSIEN 61249-4-5:2005 6 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 process more than 2 mm. Ex
38、cessive 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 characteristics to be used as qualifica
39、tion 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 restricted to the glass st
40、yle, one characteristics 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 flow (b) Scaled flow thickn
41、ess (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 or 2C10 of IEC 61189-2, the nominal resin content shall be as agreed upon between the user and supplier. The tolerance around the or
42、dered nominal value shall be 3 %, e.g. (45 3) %. 4.2.2 Treated weight When tested in accordance with test method 2C03 of IEC 61189-2, the nominal treated weight shall be as agreed upon between the user and supplier. The tolerance around the ordered nominal value shall be 3 %, e.g. (350 10,5) g. 4.2.
43、3 Resin 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 5 %, e.g. (25 5) %. Licensed Copy: Wang Bin, na, Thu Apr 20 03:07:28 BST 2006, Uncontroll
44、ed Copy, (c) BSI 7 EN 61249-4-5:2005 4.2.4 Scaled flow thickness When tested in accordance with test method 2M26 of IEC 61189-2, the nominal scaled flow and the tolerance shall be as agreed upon between the user and supplier. 4.2.5 Melting viscosity When tested in accordance with test method 2C09 of
45、 IEC 61189-2, the nominal melt viscosity shall be as agreed upon between the user and supplier. The tolerance around the ordered nominal value shall be 20 mPa s, e.g. (240 20) mPa s. 4.2.6 Gel time When tested in accordance with test method 2C02 of IEC 61189-2, the nominal gel time shall be as agree
46、d upon between the user and supplier. The tolerance around the ordered nominal value shall be 20 s, e.g. (160 20) s. 4.2.7 Volatile content When tested in accordance with test method 2C04 of IEC 61189-2, the volatile content shall be 2 % maximum. 4.3 Properties related to prepreg after curing 4.3.1
47、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 thickness shall be determined using a micrometer. When tested in accordance with test method 2E11 ( ltude) of IEC 61189-
48、2, the minimum electric strength shall be 25 V/m. 4.3.2 Flammability 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
49、approximately 0,40,5 mm is obtained as measured with a micrometer. When tested in accordance with test method 2C06 of IEC 61189-2, the flammability shall meet the requirements as shown in Table 1. Licensed Copy: Wang Bin, na, Thu Apr 20 03:07:28 BST 2006, Uncontrolled Copy, (c) BSIEN 61249-4-5:2005 8 Table 1 Flammability Requirement Designation Property Test method(IEC 61189-2)FV 0 FV 1 Flammability: Flaming combustion t
