1、BRITISH STANDARD BS EN 134100:1996 Harmonized system of quality assessment for electronic components Sectional specification: Variable capacitors (Qualification approval) The European Standard EN134100:1995 has the status of a BritishStandard ICS 31.060.60BSEN134100:1996 This BritishStandard, having
2、 been prepared under the directionof the Electrotechnical Sector Board, was published underthe authority of the Standards Board and comesintoeffect on 15July1996 BSI04-2000 The following BSI references relate to the work on this standard: Committee reference EPL/40/1 Draft announced in BSINews, Apri
3、l1996 ISBN 0 580 26013 5 Committees responsible for this British Standard The preparation of this BritishStandard was entrusted by Technical Committee EPL/40, Capacitors and resistors for electronic equipment, to Subcommittee EPL/40/1, Capacitors and EMI suppression components for electronic equipme
4、nt, upon which the following bodies were represented: Federation of the Electronics Industry Ministry of Defence National Supervising Inspectorate (BSI-PC) Society of British Aerospace Companies Ltd. Amendments issued since publication Amd. No. Date CommentsBSEN134100:1996 BSI 04-2000 i Contents Pag
5、e Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN134100 3 List of references Inside back coverBSEN134100:1996 ii BSI 04-2000 National foreword This BritishStandard has been prepared by Subcommittee EPL/40/1 and is the English language version of EN134100:1995 Sec
6、tional specification: Variable capacitors (Qualification approval), published by the Electronic Components Committee (CECC) of the European Committee for Electrotechnical Standardization (CENELEC). A British Standard does not purport to include all the necessary provisions of a contract. Users of Br
7、itish Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references Publication referred to Corresponding British Standard EN134000:1994 BS EN134000:1995 Harmonized system of quality assessment
8、for electronic components. Generic specification: Variable capacitors (Qualification approval and capability approval) EN60062:1993 (IEC62:1992) a BS EN60062:1994 Marking codes for resistors and capacitors IEC68 BS EN60068 Environmental testing IEC68-1:1988 BS EN60068-1:1995 General and guidance IEC
9、418 BS5786 Variable capacitors Part1:1979 Methods of test a IEC62:1974 referred to in the text has been superseded by IEC62:1992. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to20, an inside back cover and a back cover. This st
10、andard 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.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN134100 November1995 Descriptors: Quality, electronic components, capacitors English versi
11、on Sectional Specification: Variable capacitors (Qualification approval) Spcification intermdiare: Condensateurs variables (Homologation) Rahmenspezifikation: Einstellbare Kondensatoren (Bauartanerkennung) This European Standard was approved by CENELEC on1993-07-29. CENELEC members are bound to comp
12、ly 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 Sec
13、retariat 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
14、 the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland andUnited Kingdom. CENELEC European Committee for Electr
15、otechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1995 Copyright reserved to CENELEC members Ref.No.EN134100:1995EEN134100:1995 BSI 04-2000 2 Foreword This European Stan
16、dard was prepared by Working Group CLC/TC CECC/WG3 “Capacitors”. It is based wherever possible on the Publications ofthe International Electrotechnical Commission, and in particular on IEC418, Variable capacitors. The text of the draft based on document CECC(Secretariat)3096 was submitted to the for
17、mal vote; together with the voting report, circulated as document CECC(Secretariat)3377, and the editorially revised document CECCWG3(Hayward)3E, it was approved asEN134100 on1993-07-29. The following dates were fixed: Contents Page Foreword 2 1 General 3 1.1 Scope 3 1.2 Related documents 3 1.3 Info
18、rmation to be given in a detail specification 3 1.4 Terminology 4 1.5 Marking 4 2 Preferred ratings and characteristics 5 2.1 Preferred climatic categories 5 2.2 Preferred values of ratings 5 3 Quality assessment procedures 5 3.1 Primary stage of manufacture 5 3.2 Structurally similar components 5 3
19、.3 Certified test records of released lots 5 3.4 Qualification approval 5 3.5 Quality conformance inspection 6 Page 4 Test and measurement procedures 7 4.1 Preconditioning 7 4.2 Visual examination and check of dimensions 7 4.3 Electrical tests 7 4.4 Operating torque 9 4.5 Locking 9 4.6 Locking torqu
20、e proof 9 4.7 End stop torque 9 4.8 Thrust and pull (axial) 9 4.9 Side thrust 9 4.10 Robustness of terminations 9 4.11 Solderability 9 4.12 Resistance to soldering heat 9 4.13 Component solvent resistance 10 4.14 Solvent resistance of the marking 10 4.15 Rapid change of temperature 10 4.16 Vibration
21、 10 4.17 Bump 10 4.18 Shock 11 4.19 Climatic sequence 11 4.20 Damp heat, steady state 11 4.21 Electrical endurance 11 4.22 Mechanical endurance 12 Annex A.1 (normative) Test plan for qualificationapproval 13 Annex A.2 (normative) Test plan for quality conformance inspection lot-by-lot tests 14 Annex
22、 A.3 (normative) Test plan for quality conformance inspection periodic tests 15 Annex A.4 (normative) Test schedule for qualification approval 16 latest date by which the ENhas to be implemented at national level by publication of an identical national standard or by endorsement (dop)1996-05-31 late
23、st date by which the national standards conflicting with the EN haveto be withdrawn (dow)2003-11-30EN134100:1995 BSI 04-2000 3 1 General 1.1 Scope This specification applies to variable capacitors for use in electronic equipment. It covers capacitors for variable tuning, trimming and preset for gene
24、ral purpose applications. Capacitors for special purpose applications may require additional assessments. The object of this specification is to prescribe preferred ratings and characteristics and to select from the generic specification EN134000 the appropriate quality assessment procedures, tests
25、and measuring methods and to give general performance requirements for this type of capacitor. 1.2 Related documents NOTEThe above references apply to the current editions, except for IEC68 for which the referenced edition shall be used. 1.3 Information to be given in a detail specification Detail s
26、pecifications shall be derived from the relevant blank detail specification. Detail specifications shall not specify requirements inferior to those of the generic, sectional or blank detail specification. When more severe requirements are included, they shall be listed in1.9 of the detail specificat
27、ion and indicated in the test schedules, for example by an asterisk. The following information shall be given in each detail specification and the values quoted shall preferably be selected from those given in the appropriate clause of this sectional specification. 1.3.1 Outline drawing and dimensio
28、ns There shall be an illustration of the capacitor as an aid to easy recognition and for comparison of the capacitor with others. Dimensions and their associated tolerances, which affect interchangeability and mounting, shall be given in the detail specification. All dimensions shall be stated in mm
29、. NOTEThe information may be presented in tabular form. Normally the numerical values shall be given for the length, the width and the height of the body and the wire spacing, or for cylindrical types, the body diameter and the length of the terminations. When necessary, for example when a number of
30、 items (capacitance values/voltage ranges), are covered by a detail specification, the dimensions and their associated tolerances should be placed in a table below the drawing. When the configuration is other than described above, the detail specification shall state such dimensional information as
31、will adequately describe the capacitor. When the capacitor is not designed for use on printed boards, this shall be clearly stated in the detail specification. 1.3.2 Mounting The detail specification shall specify the method of mounting to be applied for the application of the vibration and the bump
32、 or shock tests. The design of the capacitor may be such that special mounting features are required in its use. In this case, the detail specification shall describe the mounting fixtures and they shall be used in the application of the vibration and bump or shock tests. NOTEIf recommendations for
33、mounting for “normal” use are made, they shall be included in the detail specification under “1.8 Additional information (not for inspection purposes)”. If they are included, a warning can be given that the full vibration, bump and shock performance may not be available if mounting methods other tha
34、n those specified in1.1 of the detail specification are used. ISO3:1973 Preferred numbers series of preferred numbers IEC62:1974 Marking codes for resistors and capacitors IEC63:1963 Amendment1(1967) Amendment2(1977) Preferred number series for resistors and capacitors IEC68 Basic environmental test
35、ing procedures IEC410:1973 Sampling plans and procedures for inspection by attributes EN134000 Generic specification: Variable CapacitorsEN134100:1995 4 BSI 04-2000 1.3.3 Ratings and characteristics The ratings and characteristics shall be in accordance with the relevant clauses of this specificatio
36、n, together with the following: 1) Rated capacitance range See2.2.1. NOTEWhen products approved to the detail specification have different ranges, the following statement should be added: “The range of capacitance values available in each voltage range is given in the Register of Approvals”. 2) Part
37、icular characteristics Additional characteristics may be listed when they are considered necessary adequately to specify the component for design and application purposes. 3) Soldering The detail specification shall prescribe the test methods, severities and requirements applicable for the solderabi
38、lity test and the resistance to soldering heat test. 1.3.4 Marking The detail specification shall specify the content of the marking on the capacitor and on the package. Deviations from1.5 of this sectional specification shall be specifically stated. 1.4 Terminology For terms and definitions see2.4
39、of EN134000. 1.5 Marking See2.5 of EN134000 with the following details: 1.5.1 The information given in the marking is normally selected from the following list; the relative importance of each item is indicated by its position in the list: 1) Range of capacitance 2) Rated voltage 3) Category voltage
40、 and category temperatures 4) Tolerance on capacitance range 5) Year and month (or week) of manufacture 6) Manufacturers name and trade mark 7) Climatic category 8) Manufacturers type designation 9) Reference to the detail specification 10) CECC mark. 1.5.2 The capacitor shall be clearly marked with
41、1) to5) above and with as many possible of the remaining items as is considered necessary. Any duplication of information in the marking on the capacitor should be avoided. 1.5.3 The package containing the capacitor(s) shall be clearly marked with all the information listed in1.5.1. 1.5.4 Any additi
42、onal marking shall be so applied that no confusion can arise.EN134100:1995 BSI 04-2000 5 2 Preferred ratings and characteristics The values given in detail specifications shall preferably be selected from the following: 2.1 Preferred climatic categories The capacitors covered by this specification a
43、re classified into climatic categories according to the general rules given in IEC68-1. The lower and upper category temperature and the duration of the damp heat, steady state test shall be chosen from the following: The severities for the cold and dry heat tests are the lower and upper category te
44、mperatures respectively. 2.2 Preferred values of ratings 2.2.1 Rated maximum capacitance (C R ) Preferred values of rated maximum capacitance are:12,24,7 and their decimal multiples. These values conform to theE3 series of preferred values given in IEC63: Preferred number series for resistors and ca
45、pacitors. If other values are required, they shall preferably be chosen from theE6 series. 2.2.2 Tolerance on rated maximum capacitance Preferred values of tolerances on rated maximum capacitance are 10%, 20% and10%+30% 2.2.3 Rated voltage (U R ) Preferred values of d.c. rated voltages are: For U R2
46、50V:1 1,62,546,3V and their decimal multiples For U RU 250V:250315350400450V These values are taken from theR5 andR10 series of ISO3 with the addition of350V and450V. 3 Quality assessment procedures 3.1 Primary stage of manufacture The primary stage of manufacture is the manufacture of the stator(s)
47、 and its corresponding rotor(s). 3.2 Structurally similar components Capacitors considered as being structurally similar are capacitors produced with similar processes and materials, though they may be of different case sizes and capacitance and voltage values. 3.3 Certified test records of released
48、 lots The information required in3.9 of EN134000 shall be made available when prescribed in the detail specification and when requested by a purchaser. After the endurance test the parameters for which variables information is required are the capacitance change, tangent of loss angle and the insula
49、tion resistance. 3.4 Qualification approval The procedures for qualification approval testing are given in3.5 of the generic specification EN134000. The schedule to be used for qualification approval testing on the basis of lot-by-lot and periodic tests is given in3.5 of this specification. The procedure using a fixed sample size schedule is given in3.4.1 and3.4.2 below. For the two procedures the sample sizes and the number of non-conforming items shall be of comparable order. The test conditions and requirements shall be the same. Qualification
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