1、 IEC 60393-1Edition 3.0 2008-05INTERNATIONAL STANDARD Potentiometers for use in electronic equipment Part 1:Generic specification IEC 60393-1:2008(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.THIS PUBLICATION IS COPYRIGHT PROTECTE
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9、ANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 60393-1Edition 3.0 2008-05INTERNATIONAL STANDARD Potentiometers for use in electronic equipment Part 1:Generic specification INTERNATIONAL ELECTROTECHNICAL COMMISSION XDICS 31.040.20 PRICE CODEISBN 2-8318-9748-3
10、 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60393-1 IEC:2008(E)CONTENTS FOREWORD.6 1 General.8 1.1 Scope.8 1.2 Normative references.8 2 Technical data.10 2.1 Units and symbols.10 2.2 Terms and definitions.10 2.3 Preferred values
11、.28 2.4 Marking.28 3 Assessment procedures.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 resistance.32 4.7 Te
12、rminal resistance.33 4.8 Maximum attenuation.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).
13、39 4.14 Variation of resistance with temperature.40 4.15 Rotational noise.42 4.16 Contact resistance at low-voltage levels.44 4.17 Setting ability(adjustability)and setting stability.45 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
14、on shaft.51 4.23 Shaft run-out.52 4.24 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 Sealing.60 4.32 Solderability.61 4.33 Resistance to soldering heat.61 4.34 Change o
15、f temperature.62 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.60393-1 IEC:2008(E)3 4.35 Vibration.63 4.36 Bump.64 4.37 Shock.64 4.38 Climatic sequence.65 4.39 Damp heat,steady state.67 4.40 Mechanical endurance(potentiometers).68 4.
16、41 AC endurance testing of mains switches on capacitive loads.71 4.42 DC endurance testing of switches.73 4.43 Electrical endurance.74 4.44 Component solvent resistance.78 4.45 Solvent resistance of the marking.78 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 surface mount potentiometers).83 4.51 Resistance to soldering heat(for surface mou