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I.S. EN 60539-2:2004

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

DIRECTLY HEATED NEGATIVE TEMPERATURE COEFFICIENT THERMISTORS - PART 2: SECTIONAL SPECIFICATION - SURFACE MOUNT NEGATIVE TEMPERATURE COEFFICIENT THERMISTORS

Available format(s)

Hardcopy , PDF

Superseded date

17-10-2019

Language(s)

English

Published date

01-01-2004

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.


Dates of withdrawal of national standards are available from NSAI.

FOREWORD
1 General
   1.1 Scope
   1.2 Normative references
   1.3 Information to be given in a detail specification
   1.4 Terminology
2 Preferred ratings and characteristics
   2.1 Tolerances on rated zero-power resistance
   2.2 Climatic categories
3 Quality assessment procedures
   3.1 Primary stage of manufacture
   3.2 Structurally similar components
   3.3 Qualification approval procedures
   3.4 Quality conformance inspection
   3.5 Quality conformance inspection
4 Test and measurement procedures
   4.1 Mounting
   4.2 Drying and recovery
   4.3 Visual examination and check of dimensions
   4.4 Electrical tests
   4.5 Thermal tests
   4.6 Resistance to soldering heat
   4.7 Solderability
   4.8 Rapid change of temperature
   4.9 Thermal shock
   4.10 Climatic sequence
   4.11 Damp heat, steady state
   4.12 Endurance
   4.13 Shear (adhesion) test
   4.14 Substrate bending test
   4.15 Component solvent resistance
   4.16 Solvent resistance of marking
Annex A (normative) - Guide for the specification and coding
        of dimensions of surface mount negative temperature
        coefficient thermistors
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications

Applies to surface mount directly heated negative temperature coefficient thermistors, typically made from transition metal oxide materials with semiconducting properties. These thermistors have metallized connecting pads or soldering strips and are intended to be mounted directly on to substrates for hybrid circuits or on to printed boards.

DevelopmentNote
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
33
PublisherName
National Standards Authority of Ireland
Status
Superseded
SupersededBy

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)
EN 60068-2-2:2007 Environmental testing - Part 2-2: Tests - Test B: Dry heat
IEC 60410:1973 Sampling plans and procedures for inspection by attributes
IEC 60068-2-2:2007 Environmental testing - Part 2-2: Tests - Test B: Dry heat
EN 60068-2-78:2013 Environmental testing - Part 2-78: Tests - Test Cab: Damp heat, steady state
EN 60068-2-30:2005 Environmental testing - Part 2-30: Tests - Test Db: Damp heat, cyclic (12 h + 12 h cycle)
IEC 60068-2-14:2009 Environmental testing - Part 2-14: Tests - Test N: Change of temperature
EN 60068-2-14:2009 Environmental testing - Part 2-14: Tests - Test N: Change of temperature
EN 60539-1:2016/AC:2017-09 DIRECTLY HEATED NEGATIVE TEMPERATURE COEFFICIENT THERMISTORS - PART 1: GENERIC SPECIFICATION (IEC 60539-1:2016/COR1:2017)
IEC 60539-1:2016 Directly heated negative temperature coefficient thermistors - Part 1: Generic specification
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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