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1、BRITISH STANDARD BS 4584-5: 1972 Specification for Metal-clad base materials for printed circuits Part 5: Phenolic cellulose paper copper-clad laminated sheet of medium electrical quality PF-CP-Cu-5 UDC 621.39.049.75 217:678.066 419 BS 4584-5:1972 This British Standard, having been approved by the T
2、elecommunication Industry Standards Committee, was published under the authority of the Executive Board on 28 July 1972 BSI 08-1999 The following BSI references relate to the work on this standard: Committee references TLE/19 and TLE/19/1 Draft for comment 70/9525 Word Processing Centre reference ZZ
3、409 ISBN 0 580 07413 7 Co-operating organizations The Telecommunication Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: British Broadcasting Co
4、rporation British Electrical and Allied Manufacturers Association British Radio Equipment Manufacturers Association* British Radio Valve Manufacturers Association British Railways Board Cable and Wireless Limited Crown Agents for Oversea Goverments and Administrations Department of Employment and Pr
5、oductivity (HM Factory Inspectorate) Department of Trade and Industry Electrical Contractors Association (Incorporated) Electrical Research Association* Electricity Council, the Central Electricity Generating Board and the Area Boards in England and Wales* Electronic Engineering Association* Electro
6、nic Valve and Semi-conductor Manufacturers Association Home Office Institution of Electrical Engineers Institution of Electronic and Radio Engineers Institution of Production Engineers Ministry of Defence Ministry of Defence, Army Department Ministry of Defence, Navy Department* Ministry of Defence,
7、 Procurement Executive* Post Office* Radio and Electronic Component Manufacturers Federation* Relay Services Association of Great Britain Science Research Council Radio and Space Research Station Scientific Instrument Manufacturers Association* Society of British Aerospace Companies* Telecommunicati
8、on Engineering and Manufacturing Association* The Government departments and scientific and industrial organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: British Pla
9、stics Federation Institute of Metal Finishing Society of Motor Manufacturers and Traders Amendments issued since publication Amd. No.Date of issueComments BS 4584-5:1972 BSI 08-1999i Contents Page Co-operating organizationsInside front cover Forewordii 1Scope1 2Materials and construction1 3Marking1
10、4Electrical properties1 5Non-electrical properties of the copper-clad sheet2 6Non-electrical properties of the base material after complete removal of the copper foil4 7Packaging4 Table 1 Mass per unit area and thickness of copper foil1 Table 2 Electrical properties2 Table 3 Nominal thicknesses and
11、deviations of metal-clad sheet2 Table 4 d Values for bow2 Table 5 e Values for twist3 Table 6 Pull-off and peel strength requirements3 Table 7 Flexural strength requirement4 Publications referred toInside back cover BS 4584-5:1972 ii BSI 08-1999 Foreword This Part of the British Standard deals with
12、material designated PF-CP-Cu-5. The letters PF denote phenolic resin, CP denotes cellulose paper, Cu denotes copper and 5 is a serial number. At present, International Electrotechnical Commission (IEC) Publication 249-2, “Metal-clad base materials for printed circuits, Part 2: “Specifications, does
13、not contain a grade of base material equivalent to PF-CP-Cu-5. The methods of test referred to by clause number in this specification are given in BS 4584:1970 “Metal-clad base materials for printed circuits, Part 1 “Methods of test. This British Standard replaces BS 3888:19651) for material of Type
14、 PPCC. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document com
15、prises a front cover, an inside front cover, pages i and ii, pages 1 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. 1) BS 3888, “Copper
16、-clad synthetic resin bonded laminated sheet for use in telecommunication and allied electronic equipment”. BS 4584-5:1972 BSI 08-19991 1 Scope This British Standard gives requirements for properties of phenolic cellulose paper copper-clad laminated sheet, of medium electrical quality. The standard
17、covers sheet of nominal thicknesses from 0.8 mm to 3.2 mm. NOTEThe title of the British Standard referred to in this standard is given on the inside back cover. 2 Materials and construction The sheet consists of an insulating base with metal foil bonded to one or both sides. 2.1 Insulating base. Phe
18、nolic resin bonded cellulose paper laminate. 2.2 Metal foil. Copper, as specified in Table 1. Table 1 Mass per unit area and thickness of copper foil Measurements to determine that the foil meets the above requirements before incorporation in the laminate shall be made in accordance with Clause 2.4
19、of BS 4584-1. 3 Marking It is preferred that each sheet should bear a manufacturers identification mark that is: 1) black or in some other colour that cannot be confused with red, since red indicates flame retardant grades; 2) repeated at intervals so that no part of the sheet is further than 75 mm
20、from the nearest mark; 3) printed so as to indicate the machine direction of the filler. NOTEAttention is drawn to the certification facilities offered by BSI; see the inside back cover of this standard. 4 Electrical properties When the sheet is tested by the methods shown in Table 2, it shall compl
21、y with the limits listed therein. Mass per unit areaThickness NominalLimitsNominalLimits g/m2g/m24m4m 305 610 275335 545675 35 70 3045 6288 For information only;minimum purity minimum conductivity 99.5 % 95 % of the value equivalent to a resistivity of 1.7241 1087m at 20 C. BS 4584-5:1972 2 BSI 08-1
22、999 Table 2 Electrical properties 5 Non-electrical properties of the copper-clad sheet 5.1 Appearance of the copper-clad face. The copper-clad face shall be substantially free from blisters, wrinkles, pinholes, deep scratches, pits and resin. Any discoloration or contamination shall be readily remov
23、able with a hydrochloric acid solution of density 1 020 kg/m3 or with a suitable organic solvent. 5.2 Thickness. The thickness of a sheet, including the metal foil, shall not depart at any point from the nominal thickness by more than the appropriate value shown in Table 3. Table 3 Nominal thickness
24、es and deviations of metal-clad sheet For any other value of nominal thickness, the deviation shall be that shown in Table 3 for the next greater thickness. 5.3 Bow. When the sheet is tested by the method given in Clause 2.2.1 of BS 4584-1, the bow shall not exceed the value given by the formula d (
25、L/1000)2mm, where L is the length of the straight-edge in millimetres and d is as given in Table 4. Table 4 d Values for bow Property Test method of BS 4584-1, Clause Requirement Resistance of foil of 305 g/m2 of 610 g/m2 Surface resistance after damp heat and recovery Volume resistivity after damp
26、heat and recovery Surface resistance at 100 C Volume resistivity at 100 C Permittivity after damp heat, steady state Loss tangent after damp heat, steady state 2.1.2 2.1.3.3 2.1.3.3 2.1.3.5 2.1.3.5 2.1.5 2.1.5 3.5 m7 max. 1.75 m7 max. 1 000 M7 min. 500 M7 m min. 100 M7 min. 10 M7 m min. 7.0 max. 0.0
27、70 max. Nominal thickness mm Deviation mm PreferredNon-preferred 0.8 1.6 2.4 3.2 1.0 1.2 2.0 0.09 0.11 0.12 0.14 0.15 0.18 0.20 Nominal thickness mm Copper foil on one sideCopper foil on both sides 305 g/m2610 g/m2305 or 610 g/m2 ddd 0.8 to 1.2 over 1.2 to 1.6 over 1.6 to 1.8 over 1.8 to 3.2 91 61 5
28、0 46 106 76 63 53 35 30 30 15 BS 4584-5:1972 BSI 08-19993 The values shown in Table 4 apply only if length and width are each at least 460 mm. 5.4 Twist. When the sheet is tested by the method given in Clause 2.2.3 of BS 4584-1, the twist shall not exceed the value given by the formula e (M/1000)2mm
29、, where M is the length in millimetres of the diagonal of the sheet and e is as given in Table 5. Table 5 e Values for twist The values shown in Table 5 apply only if length and width are each at least 460 mm. 5.5 Punching. The sheet shall be capable of being punched in accordance with the recommend
30、ations of the manufacturer of the sheet. 5.6 Solderability. When the sheet is tested by the method given in Clause 2.2.9 of BS 4584-1, and in accordance with the times specified below, the soldered area of each specimen shall be covered with a smooth and bright solder coating with not more than trac
31、es (approximately 5 %) of scattered imperfections, e.g. small holes or unwetted or de-wetted areas. 5.7 Other properties of the copper-clad sheet. When the sheet is tested by the methods shown in Table 6 it shall comply with the limits therein. Table 6 Pull-off and peel strength requirements Nominal
32、 thickness mm Copper foil on one sideCopper foil on both sides 305 g/m2610 g/m2305 or 610 g/m2 eee 0.8 to 1.2 over 1.2 to 1.6 over 1.6 to 1.8 over 1.8 to 3.2 18 13 9 7 22 18 14 10 10 10 6 5 (1) Wetting test.a. Plate and matt finish material: the specimen shall wet within 2 s. (2) De-wetting test.a.
33、Plate finish material: the specimen shall remain in contact with the molten solder for 5s. b. Matt finish material: no test available. Property Test method of BS 4584-1, Clause Requirement Pull-off strengtha Peel strength after heat shock Peel strength after dry heat at 100 C Peel strength after exp
34、osure to solvent vapour (trichlorethylene) Peel strength after exposure to simulated plating conditions 2.2.5 2.2.6.2 Solder temperature 245 2 C Time of contact 5 s 2.2.6.3 2.2.6.4 2.2.6.5 45 N min. 1.05 kN/m min. No delamination or blistering 1.05 kN/m min. No delamination or blistering 1.05 kN/m m
35、in. No delamination or blistering 0.6 kN/m min. a This test is not applicable to sheet of nominal thickness less than 1.2 mm. +1 0 BS 4584-5:1972 4 BSI 08-1999 6 Non-electrical properties of the base material after complete removal of the copper foil 6.1 Appearance of base material. The base materia
36、l shall be substantially free from pits, holes, scratches, surface porosity, foreign matter, conductive particles and resin inclusions and shall be substantially uniform in colour. A small amount of irregular variation of colour is permissible. 6.2 Other properties of the base material after complet
37、e removal of the copper foil. When the sheet is tested by the method shown in Table 7 it shall comply with the limits listed therein. Table 7 Flexural strength requirement 7 Packaging The sheets shall be adequately packed, and protected in cases or crates, to avoid damage and contamination in transi
38、t and during storage. Not applicable to sheet of nominal thickness less than 1.6 mm. PropertyTest method of BS 4584-1, ClauseRequirement Flexural strength2.3.1 82 MN/m2 min. BS 4584-5:1972 BSI 08-1999 Publications referred to This standard makes reference to the following British Standard: BS 4584,
39、Metal-clad base materials for printed circuits. BS 4584-1, Methods of test. BSI Certification Trade Mark The Kitemark The British Standards Institution is the owner of a registered certification trade mark. It is usually associated with the words “approved to British Standard” as shown below, the nu
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41、esting, operated during manufacture and including periodical inspection of the manufacturers works in accordance with the certification mark scheme of BSI designed to ensure compliance with a British Standard. Further particulars of the terms of licence may be obtained from the Quality Assurance Dep
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