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I.S. EN 61051-1:2008

Withdrawn
Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

VARISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 1: GENERIC SPECIFICATION
Available format(s)

Hardcopy , PDF

Withdrawn date

03-12-2021

Language(s)

English

Published date

01-01-2008

Preview

For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.

Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

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
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications

Applies to varistors with symmetrical voltage-current characteristics for use in electronic equipment.

DevelopmentNote
Supersedes I.S. CECC 42000. (12/2008) For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
DocumentType
Standard
Pages
44
PublisherName
National Standards Authority of Ireland
Status
Withdrawn

Standards Relationship
IEC 61051-1:2007 Identical
EN 61051-1:2008 Identical

IEC 60060-2:2010 High-voltage test techniques - Part 2: Measuring systems
HD 323.2.20 : 200S3 BASIC ENVIRONMENTAL TESTING PROCEDURES - TESTS - TEST T - SOLDERING
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
EN 60068-2-1:2007 Environmental testing - Part 2-1: Tests - Test A: Cold
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
EN 60068-2-2:2007 Environmental testing - Part 2-2: Tests - Test B: Dry heat
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
EN 60068-1:2014 Environmental testing - Part 1: General and guidance
EN 61249-2-7:2002/corrigendum:2005 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 60410:1973 Sampling plans and procedures for inspection by attributes
EN 60060-2:2011 High-voltage test techniques - Part 2: Measuring systems
EN 60068-2-27:2009 Environmental testing - Part 2-27: Tests - Test Ea and guidance: Shock
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
EN 60068-2-21:2006 Environmental testing - Part 2-21: Tests - Test U: Robustness of terminations and integral mounting devices
IEC 60068-2-2:2007 Environmental testing - Part 2-2: Tests - Test B: Dry heat
IEC 60062:2016 Marking codes for resistors and capacitors
EN 60062:2016/AC:2016-12 MARKING CODES FOR RESISTORS AND CAPACITORS (IEC 60062:2016/COR1:2016)
EN 60068-2-29:1993 Environmental testing - Part 2: Tests - Test Eb and guidance: Bump
EN 60068-2-78:2013 Environmental testing - Part 2-78: Tests - Test Cab: Damp heat, steady state
EN 60068-2-13:1999 Environmental testing - Part 2: Tests - Test M: Low air pressure
EN 60068-2-6:2008 Environmental testing - Part 2-6: Tests - Test Fc: Vibration (sinusoidal)
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
EN 60068-2-54:2006 Environmental testing - Part 2-54: Tests - Test Ta: Solderability testing of electronic components by the wetting balance method
IEC 60068-2-1:2007 Environmental testing - Part 2-1: Tests - Test A: Cold
EN 60068-2-30:2005 Environmental testing - Part 2-30: Tests - Test Db: Damp heat, cyclic (12 h + 12 h cycle)
EN 60695-11-5:2017 Fire hazard testing - Part 11-5: Test flames - Needle-flame test method - Apparatus, confirmatory test arrangement and guidance
IEC 60695-11-5 : 2.0 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
EN 60068-2-45:1992/A1:1993 Environmental testing - Part 2: Tests - Test Xa and guidance: Immersion in cleaning solvents
EN 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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