1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1758:1998 Incorpora
2、ting Corrigendum No. 1 The European Standard EN 1758:1997 has the status of a British Standard ICS 77.150.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Copper and copper alloys Strip for lead framesThis British Standard, having been prepared under the direction of the Eng
3、ineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 May 1998 BSI 1998 ISBN 0 580 29462 5 BS EN 1758:1998 Amendments issued since publication Amd. No. Date Text affected 10197 Corr. No. 1 September 1998 Indicated by a sideline in the margin | |
4、National foreword This British Standard is the English language version of EN 1758:1997 published by the European Committee for Standardization (CEN). The UK participation in its preparation was entrusted by Technical Committee NFE/34, Copper and copper alloys, to Subcommittee NFE/34/1, Wrought and
5、unwrought copper and copper alloys, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European develo
6、pments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Cat
7、alogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their
8、 correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rig
9、hts of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1758:1997 E EUROPEAN STANDARD EN 1758 NORME EUROPE ENNE EUROPA ISCHE NORM December 1997 ICS 77.150.30 Descriptors: Copper, copper alloys, rolled products, steel strips, integrated circuits, elec
10、tronic components, designation, materials, dimensions, dimensional tolerances, mechanical properties, surface properties, chemical composition, roughness, marking English version Copper and copper alloys Strip for lead frames Cuivre et alliages de cuivre Bandes pour grilles de composants (lead frame
11、s) Kupfer und Kupferlegierungen Ba nder fu r Systemtra ger This European Standard was approved by CEN on 6 November 1997. CEN 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 witho
12、ut 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 CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language ma
13、de by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland
14、, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 1758:1997 BSI 1998 Foreword This European Standard has been prepared by Technical Committee CEN/TC 133, Copper and copper alloys, the secretariat of which is held by DIN. This Europea
15、n Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 1998, and conflicting national standards shall be withdrawn at the latest by June 1998. Within its programme of work, Technical Committee CEN/TC 133 reques
16、ted CEN/TC 133/WG 2, Rolled flat products, to prepare the following standard: EN 1758, Copper and copper alloys Strip for lead frames. This is one of a series of European Standards for copper and copper alloy rolled flat products. Other products are, or will be, specified as follows: EN 1172, Copper
17、 and copper alloys Sheet and strip for building purposes. EN 1652, Copper and copper alloys Plate, sheet, strip and circles for general purposes. EN 1653, Copper and copper alloys Plate, sheet and circles for boilers, pressure vessels and hot water storage units. EN 1654, Copper and copper alloys St
18、rip for springs and connectors. Copper and copper alloys Copper plate, sheet and strip for electrical purposes. (WI: 00133022) This standard gives information, which might be useful to the user, on physical properties of the product contained in annex A. According to the CEN/CENELEC Internal Regulat
19、ions, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the Uni
20、ted Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 3.1 strip 3 3.2 lead frame 3 4 Designations 3 4.1 Material 3 4.2 Material condition 4 4.3 Product 4 Page 5 Ordering information 5 6 Requirements 5 6.1 Composition 5 6.2 Mechanical properties 5 6.3 Technological
21、properties 6 6.4 Dimensions and tolerances 6 6.5 Form tolerances 6 6.6 Surface properties 9 6.7 Edge stress 9 6.8 Electrical conductivity 9 7 Sampling 9 7.1 General 9 7.2 Analysis 10 7.3 Mechanical and other tests 10 8 Test methods 10 8.1 Analysis 10 8.2 Tensile test 10 8.3 Hardness test 10 8.4 Bend
22、 test 10 8.5 Edge burr b 10 8.6 Coil set 10 8.7 Transverse cross bow q 10 8.8 Twista 10 8.9 Roughness 10 8.10 Solderability 10 8.11 Edge stress 10 8.12 Electrical resistivity or conductivity test 12 8.13 Retests 12 8.14 Rounding of results 12 9 Declaration of conformity and inspection documentation
23、12 9.1 Declaration of conformity 12 9.2 Inspection documentation 12 10 Marking, packaging, labelling 12 Annex A (informative) Physical properties 13 Annex B (informative) Bibliography 13 Annex C (normative) Lead fatigue test 13 Table 1 Composition of copper 3 Table 2 Composition of low alloyed coppe
24、r alloys 3 Table 3 Mechanical properties 4 Table 4 Tolerances on thickness 6 Table 5 Tolerances on width 6 Table 6 Edgewise curvature c 7 Table 7 Edge burr b 7 Table 8 Coil set 8 Table 9 Transverse cross bow q 9 Table 10 Roughness 9 Table A.1 Physical properties 13Page 3 EN 1758:1997 BSI 1998 Table
25、1 Composition of copper Material designation Composition %( m / m ) Element Cu 1) Bi P Pb Other elements (see note) Symbol Number Total Excluding Cu-DLP CW023A min. 99,90 0,005 Ag, Ni, P max. 0,0005 0,013 0,005 0,03 1) Including Ag, up to a maximum of 0,015 %. NOTE. The total of other elements (than
26、 copper) is defined as the sum of Ag, As, Bi, Cd, Co, Cr, Fe, Mn, Ni, O, P, Pb, S, Sb, Se, Si, Sn, Te and Zn, subject to the exclusion of any individual elements indicated. Table 2 Composition of low alloyed copper alloys Material designation Composition in % (m/m) Element Cu Fe Ni P Pb Sn Zn Others
27、 Total Symbol Number CuFe2P CW107C min. Rem 2,1 0,015 0,05 max. 2,6 0,15 0,03 0,20 0,2 CuSn0,15 CW117C min. Rem. 0,10 max. 0,02 0,02 0,015 0,15 0,10 0,10 1 Scope This European Standard specifies the composition, property requirements and tolerances on dimensions and form for copper and copper alloy
28、strip for lead frame material, with widths up to and including 100 mm. Thicknesses from 0,1 mm up to and including 1,0 mm are generally used for stamped lead frames for integrated circuits and low power devices and thicknesses from 1,0 mm up to and including 2,0 mm are generally used for stamped lea
29、d frames for high power devices. The sampling procedures, the methods of test for verification of conformity to the requirements of this standard, and the delivery conditions are also specified. 2 Normative references This European Standard incorporates, by dated or undated reference, provisions fro
30、m 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 amendme
31、nt or revision. For undated references, the latest edition of the publication referred to applies. EN 1655, Copper and copper alloys Declarations of conformity. EN 10002-1, Metallic materials Tensile testing Part 1: Method of test (at ambient temperature). EN 10204, Metallic products Types of inspec
32、tion documents. ISO 1811-2, Copper and copper alloys Selection and preparation of samples for chemical analysis Part 2: Sampling of wrought products and castings. ISO 4287-1, Surface roughness Terminology Part 1: Surface and its parameters. ISO 6507-2, Metallic materials Hardness test Vickers test P
33、art 2: HV 0,2 to less than HV 5. ISO 6507-3, Metallic materials Hardness test Vickers test Part 3: Less than HV 0,2. ISO 7438, Metallic materials Bend test. ISO 7799, Metallic materials Sheet and strip 3 mm thick or less Reverse bend test. HD 323.2.20 S3, Environmental testing Part 2: Tests Test T:
34、Soldering. NOTE Informative references to documents used in the preparation of this standard, and cited at the appropriate places in the text, are listed in a bibliography, see annex B. 3 Definitions For the purposes of this standard, the following definitions apply. 3.1 strip flat rolled product of
35、 rectangular cross-section with uniform thickness from at least 0,10 mm, supplied as level wound coils usually with slit edges; the thickness does not exceed one tenth of the width 3.2 lead frame part which has been stamped or etched from a strip for assembling, carrying and effecting the electrical
36、 connections of semi-conductor components 4 Designations 4.1 Material 4.1.1 General The material is designated either by symbol or number (see Tables 1 and 2).Page 4 EN 1758:1997 BSI 1998 | | | | | Table 3 Mechanical properties Designation Nominal thickness Tensile strength R m Elongation A 50 mm Ha
37、rdness HV Material Material condition mm N/mm 2 % From Up to and including Symbol Number min. max. min. min. max. Cu-DLP CW023A R240 *) 0,10 2,0 240 300 8 H065 *) 65 95 R290 0,10 2,0 290 360 4 H090 90 110 R360 0,10 1,0 360 2 H110 110 CuFe2P CW107C R370 *) 0,10 2,0 370 430 6 H120 *) 120 140 R420 0,10
38、 2,0 420 480 3 H130 130 150 R470 0,10 1,0 470 530 H140 140 160 R520 0,10 1,0 520 580 H150 150 170 CuSn0,15 CW117C R250 *) 0,10 2,0 250 320 9 H060 *) 60 90 R300 0,10 2,0 300 370 4 H085 85 110 R360 0,10 2,0 360 430 3 H105 105 130 R420 0,10 1,0 420 490 2 H120 120 140 *) See Table 8. NOTE 1 N/mm 2 is eq
39、uivalent to 1 MPa. 4.1.2 Symbol The material symbol designation is based on the designation system given in ISO 1190-1. NOTE Although material symbol designations used in this standard might be the same as those in other standards using the designation system given in ISO 1190-1, the detailed compos
40、ition requirements are not necessarily the same. 4.1.3 Number The material number designation is in accordance with the system given in EN 1412. 4.2 Material condition For the purposes of this standard, the following designations, which are in accordance with the system given in EN 1173, apply for t
41、he material condition. R: Material condition designated by the minimum value of tensile strength requirement for the product, with mandatory tensile strength and elongation requirements; H: Material condition designated by the minimum value of hardness requirement for the product, with mandatory har
42、dness requirements. Exact conversion between material conditions designated R and H is not possible. Material condition is designated by only one of the above designations. 4.3 Product The product designation provides a standardized pattern of designation from which a rapid and unequivocal descripti
43、on of a product is conveyed in communication. It provides mutual comprehension at the international level with regard to products which meet the requirements of the relevant European Standard. The product designation is no substitute for the full content of the standard. The product designation for
44、products to this standard shall consist of: denomination (strip); number of this European Standard (EN 1758); material designation, either symbol or number (see Tables 1 and 2); material condition designation (see Table 3); nominal dimensions (thickness3 width). The derivation of a product designati
45、on is shown in the following example.Page 5 EN 1758:1997 BSI 1998 EXAMPLE: Strip conforming to this standard, in material designated either CuFe2P or CW107C, in material condition H120, nominal thickness 0,254 mm, nominal width 59,63 mm, shall be designated as follows: Strip EN 17582 CuFe2P2 H1202 0
46、,2543 59,63; or Strip EN 1758 CW107C H120 0,2543 59,63 Denomination Number of this European Standard Material designation Material condition designation Nominal dimensions in millimetres 5 Ordering information In order to facilitate the enquiry, order and confirmation of order procedures between the
47、 purchaser and the supplier, the purchaser shall state on his enquiry and order the following information: a) quantity of product required (mass); b) denomination (strip); c) number of this European Standard (EN 1758); d) material designation (see Tables 1 and 2); e) material condition designation (
48、see 4.2 and Table 3); f) nominal dimensions (thickness3 width); g) coil size requirements: nominal inside diameter, in millimetres, and maximum outside diameter, in millimetres, and either maximum mass, in kilograms, or approximate specific coil weight (mass per width) in kilograms per millimetre. N
49、OTE 1 It is recommended that the product designation as described in 4.3, is used for items b) to f). In addition, the purchaser shall also state on the enquiry and order any of the following, if required: h) whether a 908 bend test according to ISO 7438 is required (see 6.3); if so, the acceptance criteria
