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IEC 61051-1:2007

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Varistors for use in electronic equipment - Part 1: Generic specification

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Superseded date

31-12-2021

Language(s)

English, English - French

Published date

11-04-2007

FOREWORD
1 General
  1.1 Scope
  1.2 Object
  1.3 Normative references
2 Technical data
  2.1 Units, symbols and terminology
  2.2 Terms and definitions
  2.3 Preferred values and characteristics
  2.4 Marking
       2.4.1 General
       2.4.2 Coding
3 Quality assessment procedures
  3.1 Qualification approval/quality assessment
       systems
  3.2 Primary stage of manufacture
  3.3 Structurally similar components
  3.4 Qualification approval procedures
  3.5 Quality conformance inspection
       3.5.1 Certified records of released lots
       3.5.2 Delayed delivery
       3.5.3 Release for delivery before the
              completion of Group B tests
  3.6 Alternative test methods
  3.7 Unchecked parameters
4 Test and measurement procedures
  4.1 General
  4.2 Standard atmospheric conditions
       4.2.1 Standard atmospheric conditions
              for testing
       4.2.2 Recovery conditions
       4.2.3 Referee conditions
       4.2.4 Reference conditions
  4.3 Drying and recovery
  4.4 Visual examination and check of dimensions
       4.4.1 Visual examination
       4.4.2 Marking
       4.4.3 Dimensions (gauging)
       4.4.4 Dimensions (detail)
  4.5 Nominal varistor voltage or leakage current
       (not applicable to pulse measurements)
       4.5.1 Test procedure
       4.5.2 Measurement and requirements
  4.6 Pulse current
       4.6.1 Standard pulse currents
       4.6.2 Tolerances
       4.6.3 Measurement of the pulse current
  4.7 Voltage under pulse condition
  4.8 Capacitance
  4.9 Voltage proof (for insulated varistors only)
       4.9.1 V-block method
       4.9.2 Metal ball method
       4.9.3 Foil method
  4.10 Insulation resistance (for insulated varistors
       only)
       4.10.1 Test procedure
       4.10.2 Measurement and requirements
  4.11 Robustness of terminations
       4.11.1 General
       4.11.2 Test Ua[1] - Tensile
       4.11.3 Test Ub - Bending (half of the number
              of terminations)
       4.11.4 Test Uc - Torsion (other half of the
              number of terminations)
       4.11.5 Test Ud - Torque (for terminations with
              threaded studs or screws and for integral
              mounting devices)
       4.11.6 Visual examination
       4.11.7 Final measurement
  4.12 Resistance to soldering heat
       4.12.1 Preconditioning
       4.12.2 Test procedure
       4.12.3 Recovery
       4.12.4 Final inspection, measurement and
              requirements
  4.13 Solderability
       4.13.1 Test procedure
       4.13.2 Final inspection, measurements and
              requirements
  4.14 Rapid change of temperature
       4.14.1 Initial measurement
       4.14.2 Test procedure
       4.14.3 Final inspection, measurement and
              requirements
  4.15 Bump
       4.15.1 Initial measurement
       4.15.2 Test procedure
       4.15.3 Final inspection, measurement and
              requirements
  4.16 Shock
       4.16.1 Initial measurement
       4.16.2 Test procedure
       4.16.3 Final inspection, measurement and
              requirements
  4.17 Vibration
       4.17.1 Initial measurement
       4.17.2 Test procedure
       4.17.3 Final inspection, measurement
              and requirements
  4.18 Climatic sequence
       4.18.1 Initial measurement
       4.18.2 Dry heat
       4.18.3 Damp heat, cyclic, Test Db, first cycle
       4.18.4 Cold
       4.18.5 Low air pressure
       4.18.6 Damp heat, cyclic, Test Db, remaining
              cycles
       4.18.7 Final inspection, measurement and
              requirements
  4.19 Damp heat, steady state
       4.19.1 Initial measurement
       4.19.2 Test procedure
       4.19.3 Final inspection, measurement and
              requirements
  4.20 Fire hazard
  4.21 Endurance at upper category temperature
  4.22 Solvent resistance of marking
       4.22.1 Test procedure
       4.22.2 Requirements
  4.23 Component solvent resistance
       4.23.1 Initial measurements
       4.23.2 Test procedure
       4.23.3 Measurement and requirements
  4.24 Mounting (for surface mount varistors only)
Annex A (normative) Mounting for measurements of
        varistors
Annex B (normative) Interpretation of sampling
        plans and procedures as described in
        IEC 60410 for use within the IEC quality
        assessment system for electronic components
Annex C (normative) Rules for the preparation of
        detail specifications for capacitors and
        resistors for electronic equipment

IEC 61051-1:2007 is applicable to varistors with symmetrical voltage current characteristics for use in electronic equipment. This second edition cancels and replaces the first edition published in 1991 and constitutes a minor revision related to tables, figures and references.

Committee
TC 40
DevelopmentNote
A Bilingual edition has been published. (06/2012) Stability Date: 2018. (10/2012)
DocumentType
Standard
Pages
35
PublisherName
International Electrotechnical Committee
Status
Superseded
SupersededBy
Supersedes

BS IEC 61051-2 : 1992 HARMONIZED SYSTEM OF QUALITY ASSESSMENT FOR ELECTRIC COMPONENTS - VARISTORS FOR USE IN ELECTRONIC EQUIPMENT - SECTIONAL SPECIFICATION FOR SURGE SUPPRESSION VARISTORS
BS EN 62368-1 : 2014 AUDIO/VIDEO, INFORMATION AND COMMUNICATION TECHNOLOGY EQUIPMENT - PART 1: SAFETY REQUIREMENTS
I.S. EN IEC 61643-331:2018 COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTION - PART 331: PERFORMANCE REQUIREMENTS AND TEST METHODS FOR METAL OXIDE VARISTORS (MOV)
IEC 61051-2:1991 Varistors for use in electronic equipment - Part 2: Sectional specification for surge suppression varistors
IEC 61643-331:2017 Components for low-voltage surge protective devices - Part 331: Performance requirements and test methods for metal oxide varistors (MOV)
CSA C22.2 No. 62368-1 : 2014 AUDIO/VIDEO, INFORMATION AND COMMUNICATION TECHNOLOGY EQUIPMENT - PART 1: SAFETY REQUIREMENTS
PD IEC/TR 62368-2:2015 Audio/video, information and communication technology equipment Explanatory information related to IEC 62368-1
EN 61643-331:2003 Components for low-voltage surge protective devices - Part 331: Specification for metal oxide varistors (MOV)
IEC 62368-1:2014 Audio/video, information and communication technology equipment - Part 1: Safety requirements
17/30347375 DC : 0 BS EN 62368-1 ED 3.0 - AUDIO/VIDEO; INFORMATION AND COMMUNICATION TECHNOLOGY EQUIPMENT - PART 1: SAFETY REQUIREMENTS
BS EN 61000-5-5:1996 Electromagnetic compatibility (EMC). Installation and mitigation guidelines Specification of protective devices for HEMP conducted disturbance. Basic EMC publication
BS QC420101(1992) : 1992 VARISTORS FOR USE IN ELECTRONIC EQUIPMENT - BLANK DETAIL SPECIFICATION FOR SILICON CARBIDE SURGE SUPPRESSION VARISTORS - ASSESSMENT LEVEL E
EN IEC 61643-331:2018 Components for low-voltage surge protective devices - Part 331: Performance requirements and test methods for metal oxide varistors (MOV)
EN 61000-5-5:1996 Electromagnetic compatibility (EMC) - Part 5: Installation and mitigation guidelines - Section 5: Specification of protective devices for HEMP conducted disturbance
CEI EN 62368-1 : 2016 AUDIO/VIDEO, INFORMATION AND COMMUNICATION TECHNOLOGY EQUIPMENT - PART 1: SAFETY REQUIREMENTS
07/30168572 DC : 0 BS IEC 61010-1 - SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL, AND LABORATORY USE - PART 1: GENERAL REQUIREMENTS
BS EN 61643-331:2003 Low voltage surge protective devices Specification for metal oxide varistors (MOV)
I.S. EN 62368-1:2014 AUDIO/VIDEO, INFORMATION AND COMMUNICATION TECHNOLOGY EQUIPMENT - PART 1: SAFETY REQUIREMENTS (IEC 62368-1:2014, MODIFIED)
EN 62368-1:2014/AC:2017-03 AUDIO/VIDEO, INFORMATION AND COMMUNICATION TECHNOLOGY EQUIPMENT - PART 1: SAFETY REQUIREMENTS (IEC 62368-1:2014, MODIFIED)
IEC TR 62368-2:2015 Audio/video, information and communication technology equipment - Part 2: Explanatory information related to IEC 62368-1
IEC 61000-5-5:1996 Electromagnetic compatibility (EMC) - Part 5: Installation and mitigation guidelines - Section 5: Specification of protective devices for HEMP conducted disturbance. Basic EMC Publication
IEEE C62.33-1982 IEEE Standard Test Specifications for Varistor Surge-Protective Devices
CEI EN 61643-331 : 2005 COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTIVE DEVICES - PART 331: SPECIFICATION FOR METAL OXIDE VARISTORS (MOV)
BS QC420102(1992) : 1992 SPECIFICATIONS FOR HARMONIZED SYSTEM OF QUALITY ASSESSMENT FOR ELECTRONIC COMPONENTS - VARISTORS FOR USE IN ELECTRONIC EQUIPMENT - BLANK DETAIL SPECIFICATION: ZINC OXIDE SURGE SUPPRESSION VARISTORS - ASSESSMENT LEVEL E
IEEE C62.35-2010 IEEE Standard Test Methods for Avalanche Junction Semiconductor Surge-Protective Device Components

IEC 60060-2:2010 High-voltage test techniques - Part 2: Measuring systems
IEC 60068-1:2013 Environmental testing - Part 1: General and guidance
IEC 60068-2-58:2015+AMD1:2017 CSV 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 60068-2-27:2008 Environmental testing - Part 2-27: Tests - Test Ea and guidance: Shock
IEC 60068-2-20:2008 Environmental testing - Part 2-20: Tests - Test T: Test methods for solderability and resistance to soldering heat of devices with leads
IECQ 001002-3:2005 IEC QUALITY ASSESSMENT SYSTEM FOR ELECTRONIC COMPONENTS (IECQ) - RULES OF PROCEDURE - PART 3: APPROVAL PROCEDURES
IEC 61249-2-7:2002 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-clad
IEC 60068-2-21:2006 Environmental testing - Part 2-21: Tests - Test U: Robustness of terminations and integral mounting devices
IEC 60068-2-13:1983 Basic environmental testing procedures - Part 2-13: Tests - Test M: Low air pressure
IEC 60410:1973 Sampling plans and procedures for inspection by attributes
IEC 60294:2012 Measurement of the dimensions of a cylindrical component with axial terminations
IEC 60068-2-54:2006 Environmental testing - Part 2-54: Tests - Test Ta: Solderability testing of electronic components by the wetting balance method
IEC 60068-2-2:2007 Environmental testing - Part 2-2: Tests - Test B: Dry heat
IEC 60062:2016 Marking codes for resistors and capacitors
IEC 60068-2-29:1987 Environmental testing. Part 2: Tests. Test Eb and guidance: Bump
IEC 60717:2012 Method for the determination of the space required by capacitors and resistors with unidirectional terminations
IEC 60068-2-1:2007 Environmental testing - Part 2-1: Tests - Test A: Cold
IEC 60695-11-5:2016 Fire hazard testing - Part 11-5: Test flames - Needle-flame test method - Apparatus, confirmatory test arrangement and guidance
IEC 60068-2-14:2009 Environmental testing - Part 2-14: Tests - Test N: Change of temperature
IEC 60068-2-69:2017 Environmental testing - Part 2-69: Tests - Test Te/Tc: Solderability testing of electronic components and printed boards by the wetting balance (force measurement) method
IEC 60068-2-30:2005 Environmental testing - Part 2-30: Tests - Test Db: Damp heat, cyclic (12 h + 12 h cycle)

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