BS-EN-134100-1996.pdf

BRITISH STANDARD BS EN 134100:1996 Harmonized system of quality assessment for electronic components Sectional specification: Variable capacitors (Qualification approval) The European Standard EN 134100:1995 has the status of a British Standard ICS 31.060.60 Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:15:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 134100:1996 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 July 1996 © BSI 04-2000 The following BSI references relate to the work on this standard: Committee reference EPL/40/1 Draft announced in BSI News, April 1996 ISBN 0 580 26013 5 Committees responsible for this British Standard The preparation of this British Standard 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 equipment, 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.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:15:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 134100:1996 © BSI 04-2000i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 1341003 List of referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:15:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 134100:1996 ii © BSI 04-2000 National foreword This British Standard has been prepared by Subcommittee EPL/40/1 and is the English language version of EN 134100:1995 Sectional 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 British 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 toCorresponding British Standard EN 134000:1994BS EN 134000:1995 Harmonized system of quality assessment for electronic components. Generic specification: Variable capacitors (Qualification approval and capability approval) EN 60062:1993 (IEC 62:1992)a BS EN 60062:1994 Marking codes for resistors and capacitors IEC 68BS EN 60068 Environmental testing IEC 68-1:1988BS EN 60068-1:1995 General and guidance IEC 418BS 5786 Variable capacitors Part 1:1979 Methods of test a IEC 62:1974 referred to in the text has been superseded by IEC 62:1992. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 20, 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. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:15:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 134100 November 1995 Descriptors: Quality, electronic components, capacitors English version Sectional Specification: Variable capacitors (Qualification approval) Spécification intermédiare: Condensateurs variables (Homologation) Rahmenspezifikation: Einstellbare Kondensatoren (Bauartanerkennung) This European Standard was approved by CENELEC on 1993-07-29. 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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels © 1995 Copyright reserved to CENELEC members Ref. No. EN 134100:1995 E Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:15:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 134100:1995 © BSI 04-2000 2 Foreword This European Standard was prepared by Working Group CLC/TC CECC/WG 3 “Capacitors”. It is based wherever possible on the Publications of the International Electrotechnical Commission, and in particular on IEC 418, Variable capacitors. The text of the draft based on document CECC(Secretariat)3096 was submitted to the formal vote; together with the voting report, circulated as document CECC(Secretariat)3377, and the editorially revised document CECC WG3(Hayward)3E, it was approved as EN 134100 on 1993-07-29. The following dates were fixed: Contents Page Foreword2 1General3 1.1Scope3 1.2Related documents3 1.3Information to be given in a detail specification3 1.4Terminology4 1.5Marking4 2Preferred ratings and characteristics5 2.1Preferred climatic categories5 2.2Preferred values of ratings5 3Quality assessment procedures5 3.1Primary stage of manufacture5 3.2Structurally similar components5 3.3Certified test records of released lots5 3.4Qualification approval5 3.5Quality conformance inspection6 Page 4Test and measurement procedures7 4.1Preconditioning7 4.2Visual examination and check of dimensions7 4.3Electrical tests7 4.4Operating torque9 4.5Locking9 4.6Locking torque proof9 4.7End stop torque9 4.8Thrust and pull (axial)9 4.9Side thrust9 4.10 Robustness of terminations9 4.11 Solderability9 4.12 Resistance to soldering heat9 4.13 Component solvent resistance10 4.14 Solvent resistance of the marking10 4.15 Rapid change of temperature10 4.16 Vibration10 4.17 Bump10 4.18 Shock11 4.19 Climatic sequence11 4.20 Damp heat, steady state11 4.21 Electrical endurance11 4.22 Mechanical endurance12 Annex A.1 (normative) Test plan for qualification approval13 Annex A.2 (normative) Test plan for quality conformance inspection lot-by-lot tests14 Annex A.3 (normative) Test plan for quality conformance inspection periodic tests15 Annex A.4 (normative) Test schedule for qualification approval16 latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 1996-05-31 latest date by which the national standards conflicting with the EN have to be withdrawn(dow) 2003-11-30 Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:15:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 134100:1995 © BSI 04-20003 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 general 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 EN 134000 the appropriate quality assessment procedures, tests 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 IEC 68 for which the referenced edition shall be used. 1.3 Information to be given in a detail specification Detail specifications 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 in 1.9 of the detail specification 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 dimensions 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. 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 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 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 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 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 than those specified in 1.1 of the detail specification are used. ISO 3:1973Preferred numbers series of preferred numbers IEC 62:1974Marking codes for resistors and capacitors IEC 63:1963 Amendment 1 (1967) Amendment 2 (1977) Preferred number series for resistors and capacitors IEC 68Basic environmental testing procedures IEC 410:1973Sampling plans and procedures for inspection by attributes EN 134000Generic specification: Variable Capacitors Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:15:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 134100:1995 4 © BSI 04-2000 1.3.3 Ratings and characteristics The ratings and characteristics shall be in accordance with the relevant clauses of this specification, together with the following: 1) Rated capacitance range See 2.2.1. 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) Particular 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 solderability 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 from 1.5 of this sectional specification shall be specifically stated. 1.4 Terminology For terms and definitions see 2.4 of EN 134000. 1.5 Marking See 2.5 of EN 134000 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 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 1) to 5) 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 in 1.5.1. 1.5.4 Any additional marking shall be so applied that no confusion can arise. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:15:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 134100:1995 © BSI 04-20005 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 are classified into climatic categories according to the general rules given in IEC 68-1. 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 temperatures respectively. 2.2 Preferred values of ratings 2.2.1 Rated maximum capacitance (CR) Preferred values of rated maximum capacitance are: 1 2,2 4,7 and their decimal multiples. These values conform to the E3 series of preferred values given in IEC 63: Preferred number series for resistors and capacitors. If other values are required, they shall preferably be chosen from the E6 series. 2.2.2 Tolerance on rated maximum capacitance Preferred values of tolerances on rated maximum capacitance are ± 10 %, ± 20 % and 10 % + 30 % 2.2.3 Rated voltage (UR) Preferred values of d.c. rated voltages are: For UR 250 V: 1 1,6 2,5 4 6,3 V and their decimal multiples For UR U 250 V: 250 315 350 400 450 V These values are taken from the R5 and R10 series of ISO 3 with the addition of 350 V and 450 V. 3 Quality assessment procedures 3.1 Primary stage of manufacture The primary stage of manufacture is the manufacture of the stator(s) 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 v