BS EN 60393-1-2009 Potentiometers for use in electronic equipment - Generic specification《电子设备用电位器 通用规范》.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI British StandardsWB9423_BSI_StandardColCov_noK_AW:BSI FRONT COVERS 5/9/08 12:55 Page 1Potentiometers for use in electronic equipment Part 1: Generic specificationBS EN 60393-1:2009Incorporating corri

2、gendum November 2009National forewordThis British Standard is the UK implementation of EN 60393-1:2009. It iswithdrawn.The UK participation in its preparation was entrusted to Technical CommitteeEPL/40X, Capacitors and resistors for electronic equipment.A list of organizations represented on this co

3、mmittee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 2009ICS 31.040.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This Brit

4、ish Standard was published under the authority of the StandardsBRITISH STANDARDBS EN 60393-1:2009BS QC 410000:1990 which areidentical to IEC 60393-1:2008. It supersedes BS CECC 41000:1977 and ISBN 978 0 580 69156 0Amendments corrigenda issued since publication/Date Text affectedPolicy and Strategy C

5、ommittee on 30 September 200930 November 2009 Supersession details updatedEUROPEAN STANDARD EN 60393-1 NORME EUROPENNE EUROPISCHE NORM July 2009 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische No

6、rmung Central Secretariat: Avenue Marnix 17, B - 1000 Brussels 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60393-1:2009 E ICS 31.040.20 Supersedes CECC 41 000:1976English version Potentiometers for use in electronic equip

7、ment - Part 1: Generic specification (IEC 60393-1:2008) Potentiomtres utiliss dans les quipements lectroniques - Partie 1: Spcification gnrique (CEI 60393-1:2008) Potentiometer zur Verwendung in Gerten der Elektronik - Teil 1: Fachgrundspezifikation (IEC 60393-1:2008) This European Standard was appr

8、oved by CENELEC on 2009-07-01. 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 nati

9、onal 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 languag

10、e 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, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia

11、, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Foreword The text of document 40/1897/FDIS, future edition 3 of IEC 60393-1, prepared by IEC TC 40, Capacitors and resistors for electronic equip

12、ment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60393-1 on 2009-07-01. This European Standard supersedes CECC 41 000:1976. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical nationa

13、l standard or by endorsement (dop) 2010-04-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2012-07-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60393-1:2008 was approved by CENELEC as a Europe

14、an Standard without any modification. _ - 1 - EN 60393-1:2009 BS EN 60393-1:2009 2 60393-1 IEC:2008(E) CONTENTS 1 General 8 1.1 Scope8 1.2 Normative references 8 2 Technical data10 2.1 Units and symbols .10 2.2 Terms and definitions 10 2.3 Preferred values28 2.4 Marking .28 3 Assessment procedures .

15、28 4 Test and measurement procedures.28 4.1 General .28 4.2 Standard atmospheric conditions.29 4.3 Drying .30 4.4 Visual examination and check of dimensions.30 4.5 Continuity (except for continuously rotating potentiometers)32 4.6 Element resistance32 4.7 Terminal resistance .33 4.8 Maximum attenuat

16、ion 33 4.9 Resistance law (conformity) 33 4.10 Matching of the resistance law (for ganged potentiometers only).34 4.11 Switch contact resistance (when appropriate)34 4.12 Voltage proof (insulated styles only)38 4.13 Insulation resistance (insulated styles only).39 4.14 Variation of resistance with t

17、emperature40 4.15 Rotational noise 42 4.16 Contact resistance at low-voltage levels44 4.17 Setting ability (adjustability) and setting stability45 4.18 Starting torque 49 4.19 Switch torque 49 4.20 End stop torque.50 4.21 Locking torque.50 4.22 Thrust and pull on shaft.51 4.23 Shaft run-out .52 4.24

18、 Lateral run-out.53 4.25 Pilot (or spigot) diameter run-out .53 4.26 Shaft end play .54 4.27 Backlash .55 4.28 Dither 57 4.29 Output smoothness .58 4.30 Robustness of terminals 59 4.31 Sealing60 4.32 Solderability 61 4.33 Resistance to soldering heat .61 4.34 Change of temperature62 BS EN 60393-1:20

19、0960393-1 IEC:2008(E) 3 4.35 Vibration63 4.36 Bump 64 4.37 Shock64 4.38 Climatic sequence .65 4.39 Damp heat, steady state67 4.40 Mechanical endurance (potentiometers) 68 4.41 AC endurance testing of mains switches on capacitive loads.71 4.42 DC endurance testing of switches .73 4.43 Electrical endu

20、rance74 4.44 Component solvent resistance.78 4.45 Solvent resistance of the marking78 4.46 Microlinearity.79 4.47 Mounting (for surface mount potentiometers).81 4.48 Shear (adhesion) test 83 4.49 Substrate bending test (formerly bond strength of the end face plating).83 4.50 Solderability (for surfa

21、ce mount potentiometers)83 4.51 Resistance to soldering heat (for surface mount potentiometers).83 Annex A (normative) Rules for the preparation of detail specifications for capacitors and resistors for electronic equipment 84 Annex B (normative) Interpretation of sampling plans and procedures as de

22、scribed in IEC 60410 for use within the IEC Quality Assessment System for Electronic Annex F (normative) Preferred dimensions of shaft ends, bushes and for the mounting Figure 1 Shaft-sealed potentiometer 14 Figure 2 Shaft- and panel-sealed potentiometer.14 Figure 3 Fully sealed potentiometer .14 Fi

23、gure 4 Linear law 16 Figure 5 Logarithmic law16 Figure 6 Inverse logarithmic law.16 Figure 7 Output ratio17 Figure 8 Loading error .18 Figure 9 Total mechanical travel (or angle of rotation) .18 Figure 10 Conformity .20 Figure 11 Absolute conformity20 Figure 12 Linearity.21 Figure 13 Independent lin

24、earity22 Figure 14 Zero-based linearity .23 Figure 15 Absolute linearity .24 BS EN 60393-1:2009corresponding European publications Normative references to international publications with theirAnnex ZA (normative) .85Components .87 Annex C (normative) Measuring methods for rotational noise.88 Annex D

25、 (normative) Apparatus for measuring mechanical accuracy .91 Annex E (normative) Measuring method for microlinearity92 hole, bush-mounted, shaft-operated electronic components94 Annex G (informative) Example of common potentiometers law 95 Annex H (normative) Quality assessment procedures 97 4 60393

26、-1 IEC:2008(E) Figure 16 Terminal based linearity .25 Figure 17 Effective tap width25 Figure 18 Backlash 27 Figure 19 Example of insulation resistance and voltage proof test jig for surface mount potentiometers .39 Figure 20 Test circuit contact resistance 45 Figure 21 Measuring circuit for setting

27、ability (as divider).46 Figure 22 Measuring circuit for setting ability (as current controller).47 Figure 23 Shaft run-out 52 Figure 24 Lateral run-out .53 Figure 25 Pilot (spigot) diameter run-out 54 Figure 26 Shaft end play55 Figure 27 Test circuit for measurement of backlash .56 Figure 28 Measure

28、ment of backlash.57 Figure 29 Test circuit for measurement of output smoothness58 Figure 30 The circuit for continuous monitoring of the contact resistance.71 Figure 31 Test circuit a.c. endurance testing72 Figure 32 Test circuit d.c. endurance testing73 Figure 33 Example of microlinearity measureme

29、nt .79 Figure 34 Block diagram of a circuit for evaluation of microlinearity .80 Figure 35 Example of simultaneous evaluation of linearity and microlinearity.80 Figure 36 Suitable substrate for mechanical and electrical tests (may not be suitable for impedance measurements)82 Figure 37 Suitable subs

30、trate for electrical tests82 Table 1 Standard atmospheric conditions.30 Table 2 Measuring voltages .32 Table 3 Calculation of resistance value(R) and change in resistance (R) .41 Table 4 Calculation of temperature differences (T).41 Table 5 Current values (IBb) 43 Table 6 Moving contact current 48 T

31、able 7 End stop torque.50 BS EN 60393-1:2009Figure C.1 Measuring circuit for method A, rotational noise .89 Figure C.2 Measuring circuit for CRV.89 Figure C.3 Measuring circuit for ENR.90 Figure E.1 Block diagram of a digital reference unit (synthetic high-precision master).92 Figure G.1 Definition

32、of rotation (shaft-end view) .95 Figure G.2 Linear law, without centre tap.96 Figure G.3 Linear law, with centre tap96 Figure G.4 Logarithmic law, without tap .96 Figure G.5 Logarithmic law, with tap 96 Figure G.6 Inverse logarithmic law without tap .96 Figure G.7 Inverse logarithmic law with tap96

33、Figure H.1 General scheme for capability approval 100 60393-1 IEC:2008(E) 5 Table 8 Locking torque 50 Table 9 Shaft torque 51 Table 10 Thrust and pull 51 Table 11 Thrust and pull 52 Table 12 Backlash .57 Table 13 Dither for non-wire wound types 57 Table 14 Dither for wire wound types (under consider

34、ation) .58 Table 15 Tensile force .59 Table 16 Number of cycles.66 Table 17 Number of cycles.69 Table 18 Number of operations 73 Table 19 Panel size .75 BS EN 60393-1:2009Table G.1 Resistance law and code letter 95 8 60393-1 IEC:2008(E) POTENTIOMETERS FOR USE IN ELECTRONIC EQUIPMENT Part 1: Generic

35、specification 1 General 1.1 Scope This part of IEC 60393 is applicable to all types of resistive potentiometers, including lead- screw actuated types, presets, multi-turn units, etc. to be used in electronic equipment. It establishes standard terms, inspection procedures and methods of test for use

36、in sectional and detail specifications of electronic components for quality assessment or any other purpose. It has been mainly written, and the test methods described, to conform to the widely used single-turn rotary potentiometer with an operating shaft. For other types of potentiometers: the angl

37、e of rotation may be several turns; the reference to an operating shaft shall apply to any other actuating device; the angular rotation shall be taken to mean mechanical travel of the actuating device; a value for force shall be prescribed instead of a value for torque if the actuating device moves

38、in a linear instead of a rotary manner. These alternative prescriptions will be found in the sectional or detail specification. When a component is constructed as a variable resistor, i.e. as a two-terminal device, the detail specification shall prescribe the modifications required in the standard t

39、ests. 1.2 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 60027-1, Lette

40、r symbols to be used in electrical technology Part 1: General IEC 60050 (all parts), International Electrotechnical Vocabulary (IEV) IEC 60062, Marking codes for resistors and capacitors IEC 60063:1963, Preferred number series for resistors and capacitors Amendment 1 (1967) Amendment 2 (1977) IEC 60

41、068-1:1988, Environmental testing Part 1: General and guidance Amendment 1 (1992) IEC 60068-2-1:1990, Environmental testing Part 2: Tests Tests A: Cold Amendment 1 (1993) Amendment 2 (1994) BS EN 60393-1:200960393-1 IEC:2008(E) 9 IEC 60068-2-2:1974, Environmental testing Part 2: Tests Tests B: Dry h

42、eat Amendment 1 (1993) Amendment 2 (1994) IEC 60068-2-6, Environmental testing Part 2: Tests Test Fc : Vibration (sinusoidal) IEC 60068-2-13, Environmental testing Part 2: Tests Test M: Low air pressure IEC 60068-2-14:1994, Environmental testing Part 2: Tests Test N: Change of temperature Amendment

43、1 (1986) IEC 60068-2-17, Environmental testing Part 2: Tests Test Q: Sealing IEC 60068-2-20:1979, Environmental testing Part 2: Tests Test T: Soldering Amendment 2 (1987) IEC 60068-2-21, Environmental testing Part 2-21: Tests Test U: Robustness of terminations and integral mounting devices IEC 60068

44、-2-27, Environmental testing Part 2: Tests Test Ea and guidance: Shock IEC 60068-2-29, Environmental testing Part 2: Tests Test Eb and guidance: Bump IEC 60068-2-30, Environmental testing Part 2-30: Tests Test dB : Damp heat, cyclic (12 h + 12 hour cycle) IEC 60068-2-45:1980, Environmental testing P

45、art 2: Tests Test XA and guidance: Immersion in cleaning solvents Amendment 1 (1993) IEC 60068-2-58, Environmental testing Part 2-58: Tests Test Td: Test methods for solderability, resistance to dissolution of metallization and to soldering heat of surface mounting devices (SMD) IEC 60068-2-78, Envi

46、ronmental testing Part 2-78 Test Cab: Damp heat, steady state IEC 60410, Sampling plans and procedures for inspection by attributes IEC 60617, Graphical symbols for diagrams IEC 60915, Capacitors and resistors for use in electronic equipment Preferred dimensions of shaft ends, bushes and for the mou

47、nting of single-hole, bush-mounted, shaft-operated electronic components IEC 61249-2-7, Materials for printed boards and other interconnecting structures Part 2-7: Reinforced base materials clad and unclad Epoxide woven E-glass laminated sheet of defined flammability (vertical burning test), copper-

48、clad IECQ 001002-3, IEC Quality Assessment System for Electronic Components (IECQ) Rules of procedure Part 3: Approval procedures IECQ 001005, see www.iecq.orgcertificates for relevant information ISO 1000, SI units and recommendations for the use of their multiples and of certain other units BS EN 60393-1:2009 10 60393-1 IEC:2008(E) ISO 9000, Quality management systems Fundamentals and vocabulary 2 Technical data 2.1 Units and symbols Units, graphical symbols and letter symbols should, whenever possible, be taken from the following publications: IEC 60027-1; IEC 60050; I