30176959 pdf BSI Standards Publication Noise suppression sheet for digital devices and equipment Part 3 Characterization of parameters of noise suppression sheet BS EN 62333 3 2010 National foreword T[.]
BS EN 62333-3:2010 BSI Standards Publication Noise suppression sheet for digital devices and equipment Part 3: Characterization of parameters of noise suppression sheet BRITISH STANDARD BS EN 62333-3:2010 National foreword This British Standard is the UK implementation of EN 62333-3:2010 It is identical to IEC 62333-3:2010 The UK participation in its preparation was entrusted to Technical Committee EPL/51, Transformers, inductors, magnetic components and ferrite materials A list of organizations represented on this committee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application © BSI 2010 ISBN 978 580 61821 ICS 29.100.10 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2010 Amendments issued since publication Amd No Date Text affected BS EN 62333-3:2010 EN 62333-3 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM February 2010 ICS 29.100.10 English version Noise suppression sheet for digital devices and equipment Part 3: Characterization of parameters of noise suppression sheet (IEC 62333-3:2010) Plaque réduisant le bruit des dispositifs et appareils numériques Partie 3: Caractérisation des paramètres des plaques réduisant le bruit (CEI 62333-3:2010) Rauschunterdrückungsschicht für digitale Geräte und Einrichtungen Teil 3: Eigenschaften von Parametern der Rauschunterdrückungsschicht (IEC 62333-3:2010) This European Standard was approved by CENELEC on 2010-02-01 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 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 translation 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, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Central Secretariat: Avenue Marnix 17, B - 1000 Brussels © 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members Ref No EN 62333-3:2010 E BS EN 62333-3:2010 EN 62333-3:2010 -2- Foreword The text of document 51/970/FDIS, future edition of IEC 62333-3, prepared by IEC TC 51, Magnetic components and ferrite materials, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 62333-3 on 2010-02-01 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CEN and CENELEC shall not be held responsible for identifying any or all such patent rights The following dates 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) 2010-11-01 – latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2013-02-01 Annex ZA has been added by CENELEC Endorsement notice The text of the International Standard IEC 62333-3:2010 was approved by CENELEC as a European Standard without any modification In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60695-11-10 NOTE Harmonized as EN 60695-11-10 IEC 62321 NOTE Harmonized as EN 62321:2009 (not modified) IEC 62333-1 NOTE Harmonized as EN 62333-1:2006 (not modified) IEC 62333-2 NOTE Harmonized as EN 62333-2:2006 (not modified) BS EN 62333-3:2010 -3- EN 62333-3:2010 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies Publication Year Title EN/HD Year 1) IEC 60068-1 1988 Environmental testing Part 1: General and guidance EN 60068-1 1994 IEC 60068-2-1 - Environmental testing Part 2-1: Tests - Test A: Cold EN 60068-2-1 - IEC 60068-2-2 - Environmental testing Part 2-2: Tests - Test B: Dry heat EN 60068-2-2 - IEC 60093 - HD 429 S1 Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials - ISO 527-1 - Plastics - Determination of tensile properties - Part 1: General principles - ISO 1183-1 2004 Plastics - Methods for determining the density of non-cellular plastics Part 1: Immersion method, liquid pyknometer method and titration method - ISO 3611 - Micrometer callipers for external measurement - - ISO 22007-1 - Plastics - Determination of thermal conductivity and thermal diffusivity Part 1: General principles - - ISO 22007-2 - Plastics - Determination of thermal conductivity and thermal diffusivity Part 2: Transient plane heat source (hot disc) method - ISO 22007-3 - Plastics - Determination of thermal conductivity and thermal diffusivity Part 3: Temperature wave analysis method - - ISO 22007-4 - Plastics - Determination of thermal conductivity and thermal diffusivity Part 4: Laser flash method - - 1) EN 60068-1 includes A1 to IEC 60068-1 + corr October BS EN 62333-3:2010 –2– 62333-3 IEC:2010 CONTENTS INTRODUCTION Scope .6 Normative references .6 Terms and definitions .7 General Parameters, descriptions and measuring methods Material properties 5.1.1 Surface resistivity 5.1.2 Mechanical characteristics 5.1.3 Thermal conductivity 5.1.4 Environmental conditions 5.1.5 Statement for non-usage of the prohibited chemical materials 10 5.2 Structure 10 5.2.1 Thickness 10 5.2.2 Layer structure 10 Bibliography 11 5.1 Figure – Framework of IEC 62333 series for noise suppression sheet Figure – Schematic diagram of thermal conductivity measuring apparatus Figure – Structure of NSS 10 Table – Structural example 10 BS EN 62333-3:2010 62333-3 IEC:2010 –5– INTRODUCTION There are established standards for noise suppression sheet (NSS) as in IEC 62333-1 and in IEC 62333-2 Figure shows the framework of IEC 62333 series for NSS Part issues the general guidelines of IEC 62333 series Part establishes measurement methods of four important suppression ratios for NSS This Part specifies characterization of each parameter except suppression ratio of NSS, which is determined in Part Parameters prescribed in this part are divided into material properties and structure IEC 62333-1 Part 1: Definitions and general properties Suppression ratio (R da , R de , R and R rs ) Others IEC 62333-2 and IEC 62333-3 Part 2: Measuring methods Suppression ratio (R da , R de , R and R rs ) Part 3: Characterization of parameters of noise suppression sheet Material properties Structure IEC Figure – Framework of IEC 62333 series for noise suppression sheet 2618/09 BS EN 62333-3:2010 –6– 62333-3 IEC:2010 NOISE SUPPRESSION SHEET FOR DIGITAL DEVICES AND EQUIPMENT – Part 3: Characterization of parameters of noise suppression sheet Scope This part of IEC 62333 provides characterization of parameters for electromagnetic noise suppression sheet (NSS) for digital devices and equipment used in a frequency range between 30 MHz to 30 GHz Guidance is given for uniform presentation of the properties of noise suppression sheet, intended for use in manufacturers and users technical data NSS suppresses noise at its source, rather than absorbing noise at a distance Therefore NSS is distinguished from RF wave absorbers used in free space This standard addresses the following purposes of NSS manufacturers and users: – it assists users in understanding the published technical data in catalogues; – it guides users in selecting the most preferable NSS for each application; – it establishes measurement benchmarking for manufacturers of performance in new development of NSS; and – it maintains high reliability of NSS and applied products The numerical values given in this standard are typical values of parameters (properties) of the related NSS The purpose of NSS testing is the benchmarking of materials Predictions of specific device performance values are not always easy or even possible Every detailed material and NSS specification should be agreed between the user and the manufacturer Normative references The following referenced documents are indispensable for the application of this document For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies IEC 60068-1:1988, Environmental testing – Part 1: General and guidance IEC 60068-2-1, Environmental testing – Part 2-1: Tests – Test A: Cold IEC 60068-2-2, Environmental testing – Part 2-2: Tests – Test B: Dry heat IEC 60093, Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials ISO 527-1, Plastics – Determination of tensile properties – Part 1: General principles ISO 1183-1:2004, Plastics – Methods for determining the density non-cellular plastics – Part 1: immersion method, liquid pyknometer method and titration method ISO 3611, Micrometer callipers for external measurement BS EN 62333-3:2010 62333-3 IEC:2010 –7– ISO 22007-1, Plastics – Determination of thermal conductivity and thermal diffusivity – Part 1: General principles ISO 22007-2, Plastics – Determination of thermal conductivity and thermal diffusivity – Part 2: Transient plane heat source (Hot Disc) method ISO 22007-3, Plastics – Determination of thermal conductivity and thermal diffusivity – Part 3: Temperature wave analysis method ISO 22007-4, Plastics – Determination of thermal conductivity and thermal diffusivity – Part 4: Laser flash method Terms and definitions For the purposes of this document, the following terms and definitions apply 3.1 density ρ 3 ratio of the mass of a sample to its volume, expressed in kg/m or g/cm 3.2 specific gravity ratio of material density (mass per unit volume) at 23 °C to the density of gas-free distilled water at 23 °C 3.3 tensile strength σ M (Young’s modulus, Et) maximum tensile stress sustained by the test specimen during a tensile test It is expressed in MPa [ISO 527-1:1993, definition 4.3.3] General In selecting the optimum NSS, apart from the noise suppression ratios specified in Part 2, material properties and structure are important factors Part hereby, specifies measurement methods and data presentation methods of each parameter except suppression ratio of NSS Part gives guidance on suppression characteristics and this part gives guidance on the characteristics of NSS with regards to material properties and structure The material properties in this standard consist of – surface resistivity; – mechanical characteristics (density, Young’s modulus and/or hardness); – thermal characteristics (thermal conductivity, thermal expansion coefficient); – environmental conditions (operating and/or storage temperature, flammability) These parameters are required for indicating the installation availability and reliability after long time usage The structures in this standard consist of – thickness; BS EN 62333-3:2010 –8– – 62333-3 IEC:2010 layer structure These parameters are closely related to the four specific noise suppression effects prescribed in Part NOTE The adhesive will have a direct influence on material properties The definitions in this part are for NSS without adhesive Manufacturers and users should make specific agreement concerning properties with adhesive NOTE Permeability is not a defined NSS material characteristic or structure Permeability is considered by the manufacturer in the design of the material, to achieve the target suppression properties in Part NOTE Manufacturers often recommend frequency ranges in their datasheets based on typical applications and operating conditions Therefore, recommended frequency range is not included in material properties of this standard Parameters, descriptions and measuring methods 5.1 Material properties 5.1.1 Surface resistivity Surface resistivity shall IEC 60093:1980 be determined, and the results reported, as specified in Surface resistivity is the quotient of a d.c electric field strength, and the linear current density in a surface layer of NSS In practice it is taken as the surface resistance reduced to a square area The size of the square is immaterial NOTE The SI unit of surface resistivity is the ohm (Ω) In practice, this is sometimes referred to as “ohms per square” 5.1.2 5.1.2.1 Mechanical characteristics Density Density shall be determined, and the results reported, by method A specified in ISO 1183-1 5.1.2.2 Specific gravity Specific gravity can be converted to density (kg/cm or g/cm ) by multiplying specific gravity by 9,975x10 –4 or 0,997 5, respectively 5.1.2.3 Tensile strength (Young’s modulus) Tensile testing is performed by elongating a specimen and measuring the load carried by the specimen From knowledge of the specimen dimensions, the load and deflection data can be translated into a stress-strain curve Results shall be reported as described in ISO 527-1 5.1.3 Thermal conductivity a) Thermal conductivity (λ) shall be determined with λ = α·Cp·ρ, where, α is thermal diffusivity, Cp is specific heat and ρ is density Thermal diffusivity can be measured and determined by the following standards: ISO 22007-1, ISO 22007-2, ISO 22007-3 and ISO 22007-4 The measuring standard used shall be identified, and the results shall be reported as described in that standard b) Thermal conductivity should be measured under the standard atmospheric conditions specified in 5.3.1 of IEC 60068-1:1988 c) If additional data is necessary, the physical structure of the test and the test conditions should be noted BS EN 62333-3:2010 62333-3 IEC:2010 –9– Figure shows a schematic diagram of measuring apparatus (Reference from Figure of ISO 22007-3.) Temperature controller Function synthesizer Reference signal Substrate Heater Personal computer Thermometer Specimen Substrate Substrate Specimen holder Sensor Digital multimeter Furnace Lock-in amplifier Bias current circuit IEC 2619/09 Figure – Schematic diagram of thermal conductivity measuring apparatus Environmental conditions 5.1.4 5.1.4.1 Operating temperature Operating temperature range should be guaranteed within –30 % variation of x, where x = – 10 (–Rtp/10) at 20 °C The measurement frequency should be described 5.1.4.2 Storage temperature Highest and lowest storage temperatures should be guaranteed within –30 % variation of x, where x = – 10 (–Rtp/10) , after NSS is removed from each storage temperature to 20 °C The measurement frequency should be described Storage temperature and storage time should be prescribed by test “Ab” specified in IEC 60068-2-1 and test “Bb” specified in IEC 60068-2-2 5.1.4.3 Flammability Manufacturer’s datasheet for NSS should report whether or not the material is compliant with flammability safety requirements NOTE For example, IEC 60695-11-10 or UL94 grade BS EN 62333-3:2010 – 10 – 62333-3 IEC:2010 Statement for non-usage of the prohibited chemical materials 5.1.5 5.1.5.1 RoHS Manufacturer’s datasheet for NSS should report whether or not the material is compliant with RoHS environmental requirements NOTE For example, IEC 62321:2008 5.1.5.2 Other prohibited chemical materials Statement of other prohibited chemical materials can be described, if necessary 5.2 5.2.1 Structure Thickness Thickness of NSS should be measured using a micrometer with an accuracy of ±0,02 mm, according to ISO 3611, having faces with diameters between (5 to 30) mm 5.2.2 Layer structure Layer structure of NSS should be reported referencing the types and structures shown in Table “Magnetic” layer is a magnetic dielectric or a magnetic dielectric composite “Nonmagnetic” layer is a conductive or a dielectric material Figure shows the structure of NSS Table – Structural example Type Structure and materials of each layer Single layer Magnetic Figure 3a Double layered Magnetic + non-magnetic Figure 3b Multi layered Magnetic + non-magnetic Figure 3c IEC 2620/09 Figure 3a – Single layer IEC 2621/09 Figure 3b – Double layered IEC 2622/09 Figure 3c – Multi layered Figure – Structure of NSS BS EN 62333-3:2010 62333-3 IEC:2010 – 11 – Bibliography IEC 60695-11-10, Fire hazard testing – Part 11-10: Test flames – 50 W horizontal and vertical flame test methods IEC 62321:2008, Electrotechnical products – Determination of levels of six regulated substances (lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers) IEC 62333-1:2006, Noise suppression sheet for digital devices and equipment – Part 1: Definitions and general properties IEC 62333-2:2006, Noise suppression sheet for digital devices and equipment – Part 2: Measuring methods _ This page deliberately left blank This page deliberately left blank NO 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