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1、BRITISH STANDARD BS EN 134000:1995 Harmonized system of quality assessment for electronic components Generic Specification Variable capacitors (Qualification approval and capability approval) The European Standard EN 134000:1994 has the status of a British Standard Licensed Copy: sheffieldun sheffie
2、ldun, na, Sun Oct 29 10:14:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 134000:1995 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 December 1995 BSI 01-2
3、000 The following BSI references relate to the work on this standard: Committee reference EPL/40 Draft announced in BSI News February 1995 ISBN 0 580 24872 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee EPL/40, Capacit
4、ors and resistors for electronic equipment, upon which the following bodies were represented: Federation of the Electronics Industry Ministry of Defence National Supervising Inspectorate (BSI PC) The following bodies were also represented in the drafting of the standard, through sub-committees and p
5、anels BEAMA Ltd. BSI Testing Services Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:14:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 134000:1995 BSI 01-2000i Contents Page Committees responsibleInside front cover National for
6、ewordii Foreword2 Text of EN 1340005 List of referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:14:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 134000:1995 ii BSI 01-2000 National foreword This British Standard has been prepared by Technical Committee EPL/40
7、 and is the English language version of EN 134000:1994, Generic specification: Variable capacitors (Qualification approval and capability approval) published by the European Committee for Electrotechnical Standardization (CENELEC) Electronic Components Committee (CECC). Cross-references Publication
8、referred toCorresponding British Standard EN 100114-I:1993BS EN 100114 Rule of Procedure 14. Quality assessment procedures. Part 1:1994 Approval of manufacturers and other organizations CECC 00014:1988 (EN 100014:1992) BS EN 100014:1992 Harmonized system of quality assessment for electronic componen
9、ts. Basic specification: CECC assessed process average procedure (60 % confidence limit) BS CECC 00114 Rule of procedure 14. Quality assessment procedures. CECC 00114-II:1994Part 2:1995 Qualification approval of electronic components CECC 00114-III:1993Part 3:1993 Capability approval of an electroni
10、c component manufacturing activity ISO 3:1973 ISO 497:1973 BS 2045:1965 Preferred numbers IEC 50BS 4727 Glossary of electrotechnical, power, telecommunication, electronics, lighting and colour terms IEC 62:1992BS EN 60062:1994 Marking codes for resistors and capacitors IEC 63:1963BS 2488:1966 Schedu
11、le of preferred numbers for the resistance of resistors and capacitance of capacitors for telecommunication equipment IEC 68BS 2011 Environmental testing IEC 68-1:1988Part 1.1:1989 General and guidance BS EN 60068: Environmental testing EN 60068-2-1:1993 (IEC 68-2-1:1990) BS EN 60068-2-1:1993 Tests
12、A. Cold EN 60068-2-2:1993 (IEC 68-2-2:1974) BS EN 60068-2-2:1993 Tests B. Dry heat BS 2011 Environmental testing IEC 68-2-3:1969Part 2.1Ca:1977 Test Ca. Damp heat, steady state IEC 68-2-6:1970Part 2.1Fc:1983 Test Fc. Vibration (sinusoidal) IEC 68-2-13:1983Part 2.1M:1984 Test M. Low air pressure IEC
13、68-2-14:1974Part 2.1N:1985 Test N. Change of temperature IEC 68-2-20:1979Part 2.1T:1981 Test T. Soldering IEC 68-2-21:1985Part 2.1U:1984 Test U. Robustness of terminations and integral mounting devices BS EN 60068 Environmental testing EN 60068-2-27:1993 (IEC 68-2-27:1978) EN 60068-2-29:1993 (IEC 68
14、-2-29:1988) BS EN 60068-2-27:1993 Environmental testing procedures. Tests. Test Ea and guidance. Shock BS EN 60068-2-29:1993 Environmental testing procedures. Tests. Test Eb and guidance. Bump Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:14:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
15、BS EN 134000:1995 BSI 01-2000iii 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. Publicat
16、ion referred toCorresponding British Standard IEC 68-2-30:1980BS 2011 Environmental testing Part 2.1Db:1981 Test Db and guidance : Damp heat, cyclic (12 + 12 hour cycle) BS EN 60068 Environmental testing EN 60068-2-45:1992 (IEC 68-2-45:1980) BS EN 60068-2-45:1993 Environmental testing. Tests. Test X
17、A and guidance. Immersion in cleaning solvents IEC 418BS 5786 Variable capacitors Part 1:1979 Methods of test IEC 617BS 3939 Graphical symbols for electrical power, telecommunications and electronics diagrams Summary of pages This document comprises a front cover, an inside front cover, pages i to i
18、v, the EN title page, pages 2 to 22, 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
19、:14:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:14:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 134000 June 1994 Descriptors: Quality, electronic components, capacitors English
20、version Generic specification: Variable capacitors (Qualification approval and capability approval) Spcification gnrique: Condensateurs variables (Homologation et agrment de savoir-faire) Fachgrundspezifikation: Einstellbare Kondensatoren (Bauartanerkennung und Befhigungsanerkennung) This European S
21、tandard was approved by the CENELEC Electronic Committee (CECC) on 29 July 1993. 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 a
22、nd bibliographical references concerning such national standards may be obtained on application to the General Secretariat of the CECC 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 und
23、er the responsibility of a CENELEC member into its own language and notified to the CECC General 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, It
24、aly, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. The membership of the CECC is identical, with the exception of the national electrotechnical committees of Greece, Iceland and Luxembourg. CECC European Committee for Electrotechnical Standardization Comit
25、 Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1994 Copyright reserved to CENELEC members Ref. No. EN 134000:1994 E Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:14:37 GMT+00:00 2006, Un
26、controlled Copy, (c) BSI EN 134000:1994 BSI 01-2000 2 Foreword The CENELEC Electronic Components Committee (CECC) is composed of those member countries of the European Committee for Electrotechnical Standardization (CENELEC) who wish to take part in a harmonized system for electronic components of a
27、ssessed quality. The object of the system is to facilitate international trade by the harmonization of the specifications and quality assessment procedures for electronic components, and by the grant of an internationally recognized mark, or certificate, of conformity. The components produced under
28、the system are thereby acceptable in all member countries without further testing. This European Standard was prepared by CECC WG 3, Capacitors. The text of the draft based on document CECC(Sec)3095 was submitted to the formal vote; together with the voting report, circulated as document CECC(Sec)33
29、76, it was approved by CECC as EN 134000 on 29 July 1993. This voting report also covers document CECC WG3(Hayward)2E/02.93. At its meeting in Nuremberg in May 1993 CECC WG 3 decided to use for publication document CECC WG3(Hayward)2E, a revision of CECC(Sec)3095, wherein Section 3 had been changed
30、in view of the capability approval procedure according to EN 130000. It should be published without voting because the former document had been closed with positive votes only (see minutes of the mentioned meeting CECC WG3(Sec)255 item 8.2). The text of EN 134000 is based on the following documents:
31、 CECC CECC(Sec)3095/03.92 RV CECC(Sec)3376/06.93 and CECC WG3(Hayward)2E/02.93 RV CECC(Sec)3376/06.93. The following dates were fixed: Contents Page Foreword2 1Scope5 2General5 2.1Order of precedence5 2.2Related documents5 2.3Units and symbols6 2.4Terminology6 2.5Marking9 3Quality assessment procedu
32、res9 3.1General9 3.2Primary stage of manufacture10 3.3Subcontracting10 3.4Structurally similar components10 3.5Qualification approval procedures10 3.6Capability approval procedures11 3.7Rework and repair work11 3.8Release for delivery11 3.9Certified test records of released lots12 3.10 CECC Assessed
33、 Process Average procedure (APA)12 3.11 Delayed delivery12 3.12 Alternative test methods12 3.13 Manufacture outside the geographical limits of CECC supervising inspectorates12 4Test and measurement procedures12 4.1General12 4.2Standard atmospheric conditions13 4.3Drying14 4.4Visual examination and c
34、heck of dimensions14 4.5Electrical tests14 4.6Operating torque16 4.7Locking16 4.8Locking torque proof17 4.9End stop torque17 4.10 Thrust and pull (axial)17 4.11 Side thrust17 4.12 Robustness of terminations and integral mounting devices17 4.13 Solderability18 4.14 Resistance to soldering heat18 4.15
35、 Component solvent resistance18 latest date of announcement of the EN at national level(doa) 1993-11-30 latest date of publication of an identical national standard(dop) 1994-05-31 latest declaration of NS obsolescence1994-05-31 latest date of withdrawal of conflicting national standards(dow) 2003-1
36、1-30 Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:14:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 134000:1994 BSI 01-20003 Page 4.16 Solvent resistance of marking18 4.17 Rapid change of temperature18 4.18 Vibration19 4.19 Bump19 4.20 Shock19 4.21 Climatic sequence19 4.22 Damp heat,
37、steady state20 4.23 Electrical endurance20 4.24 Mechanical endurance20 Annex A (normative) Interpretation of sampling plans and procedures as described in IEC 41021 Annex B (informative) Quality factor22 Table 1 Standard atmospheric conditions for referee purpose13 Table 216 Table 320 Licensed Copy:
38、 sheffieldun sheffieldun, na, Sun Oct 29 10:14:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:14:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 134000:1994 BSI 01-20005 1 Scope This specification is applicable to variable capacitors
39、of the following types for use in electronic equipment: a) Variable tuning capacitors b) Trimmer capacitors c) Preset capacitors It establishes standard terms, inspection procedures and methods of test for use in sectional and detail specifications within the CECC System for electronic components. 2
40、 General 2.1 Order of precedence Where any discrepancies occur for any reason, documents shall rank in the following order of precedence: the detail specification the sectional specification the generic specification the FEN internal regulations any other international documents (for example of the
41、IEC) to which reference is made The same order of precedence shall apply to equivalent national documents. 2.2 Related documents EN 100114-I (1994)Approval of manufacturers and other organizations (with amendment 1) Issue 2 (1991)Internal Regulations of the FEN e.V. (supersedes CECC 00100 Issue 2 19
42、88) CECC 00014 (1986)CECC Assessed Process Average Procedure (APA) CECC 00114-II (1992)Qualification approval of electronic components (with amendment 1) CECC 00114-III (1993) Capability approval of an electronic component manufacturing activity (with amendment and erratum) ECQAC 1220 (1992)ECQAC Po
43、licy on Uncertainty of Measurement ISO 3 (1973)Preferred numbers Series of preferred numbers ISO 497 (1973)Guide to the choice of series of preferred numbers and of series containing more rounded values of preferred numbers ISO 1000 (1973)SI units and recommendations for the use of their multiples a
44、nd of certain other units IEC 27-1 (1971)Letter symbols to be used in electrical technology: Part 1 General IEC 50International Electrotechnical Vocabulary IEC 62 (1992)Marking codes for resistors and capacitors IEC 63 (1963)Preferred number series for resistors and capacitors IEC 68Basic environmen
45、t testing procedure IEC 68-1 (1988)General IEC 68-2-1 (1974) 68-2-1A (1976) Test A: Cold First supplement IEC 68-2-2 (1974) 68-2-2A (1976) Test B: Dry Heat First supplement IEC 68-2-3 (1969)Test Ca: Damp Heat, steady state IEC 68-2-6 (1970) Amendment 1 (1972) Amendment 2 (1985) Test Fc: Vibration (s
46、inusoidal) IEC 68-2-13 (1983)Test M: Low air pressure Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:14:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 134000:1994 6 BSI 01-2000 2.3 Units and symbols Units, graphical symbols, letter symbols and terminology will whenever possible be taken
47、 from the following publications: ISO 1000, IEC 27, IEC 50, IEC 617. When further items are required they shall be derived in accordance with the principles of the documents listed above. 2.4 Terminology For the purpose of this standard the following definitions apply: 2.4.1 variable capacitor a cap
48、acitor which is designed to enable its capacitance to be varied continuously over its complete range 2.4.2 differential capacitor a capacitor comprising two isolated stators which function with one rotor, arranged so that as the capacitance between the rotor and one stator increases, the capacitance
49、 between the rotor and the other stator decreases; but the sum of the two capacitance values remains substantially constant for all settings 2.4.3 split stator capacitor a capacitor comprising two isolated stators which function in series with a common rotor 2.4.4 section a stator and its corresponding rotor/moving electrode 2.4.5 multi-section capacitor a capacitor which has several sections, the capacitance value of which are varied simultaneously by a common actuating device 2.4.6 reference section that section to which ot