EN IEC 60539-2:2019
(Main)Directly heated negative temperature coefficient thermistors - Part 2: Sectional specification - Surface mount negative temperature coefficient thermistors
Directly heated negative temperature coefficient thermistors - Part 2: Sectional specification - Surface mount negative temperature coefficient thermistors
IEC 60539-2:2019 is available as IEC 60539-2:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60539-2:2019 is applicable 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. This edition includes the following significant technical changes with respect to the previous edition: a) revision for the structure in accordance with ISO/IEC Directives, Part 2:2016 (seventh edition) to the extent practicable, and for harmonizing with IEC 60539-1:2016; b) the upper category temperatures of 175 °C, 200 °C, 250 °C, 315 °C, 400 °C in Table 1 have been added; c) the dimensions of 0402M in Annex A have been added.
Direkt geheizte temperaturabhängige Widerstände mit negativem Temperaturkoeffizienten - Teil 2: Rahmenspezifikation - Oberflächenmontierbare temperaturabhängige Widerstände mit negativem Temperaturkoeffizienten
Thermistances à coefficient de température négatif à chauffage direct - Partie 2: Spécification intermédiaire - Thermistances à coefficient de température négatif pour montage en surface
IEC 60539-2:2019 est disponible sous forme de IEC 60539-2:2019 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L'IEC 60539-2:2019 s'applique aux thermistances à coefficient de température négatif à chauffage direct pour montage en surface, typiquement constituées de matériaux faits d'oxyde de métal de transition dotés de propriétés semi-conductrices. Ces thermistances sont équipées de contacts de connexion métallisés ou de bandes de brasure et sont destinées à être montées directement sur des substrats pour circuits hybrides ou sur des cartes imprimées. La présente édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: a) révision de la structure conformément aux directives ISO/IEC, Partie 2:2016 (septième édition), dans la mesure du possible, et pour l'harmonisation avec l'IEC 60539-1:2016; b) les températures maximales de catégorie 175 °C, 200 °C, 250 °C, 315 °C, 400 °C ont été ajoutées dans le Tableau 1; c) les dimensions de 0402M à l'Annexe A ont été ajoutées.
Neposredno ogrevani termistorji z negativnim temperaturnim koeficientom - 2. del: Področna specifikacija - Termistorji z negativnim temperaturnim koeficientom za površinsko montažo (IEC 60539-2:2019)
Standard EN-IEC 60539-2 se uporablja za neposredno ogrevane termistorje z negativnim temperaturnim koeficientom za površinsko montažo, ki so običajno izdelani iz materialov prehodnega kovinskega oksida s polprevodniškimi lastnostmi. Ti termistorji imajo metalizirane priključne blazinice ali varilne trakove ter so namenjeni namestitvi neposredno na podloge za hibridne tokokroge ali na tiskana vezja.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2019
Nadomešča:
SIST EN 60539-2:2004
SIST EN 60539-2:2004/A1:2010
Neposredno ogrevani termistorji z negativnim temperaturnim koeficientom - 2. del:
Področna specifikacija - Termistorji z negativnim temperaturnim koeficientom za
površinsko montažo (IEC 60539-2:2019)
Directly heated negative temperature coefficient thermistors - Part 2: Sectional
specification - Surface mount negative temperature coefficient thermistors (IEC 60539-
2:2019)
Direkt geheizte temperaturabhängige Widerstände mit negativem
Temperaturkoeffizienten - Teil 2: Rahmenspezifikation - Oberflächenmontierbare
temperaturabhängige Widerstände mit negativem Temperaturkoeffizienten (IEC 60539-
2:2019)
Thermistances à coefficient de température négatif à chauffage direct - Partie 2:
Spécification intermédiaire - Thermistances à coefficient de température négatif pour
montage en surface (IEC 60539-2:2019)
Ta slovenski standard je istoveten z: EN IEC 60539-2:2019
ICS:
31.040.30 Termistorji Thermistors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60539-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2019
ICS 31.040.30 Supersedes EN 60539-2:2004 and all of its amendments
and corrigenda (if any)
English Version
Directly heated negative temperature coefficient thermistors -
Part 2: Sectional specification - Surface mount negative
temperature coefficient thermistors
(IEC 60539-2:2019)
Thermistances à coefficient de température négatif à Direkt geheizte temperaturabhängige Widerstände mit
chauffage direct - Partie 2: Spécification intermédiaire - negativem Temperaturkoeffizienten - Teil 2:
Thermistances à coefficient de température négatif pour Rahmenspezifikation - Oberflächenmontierbare
montage en surface temperaturabhängige Widerstände mit negativem
(IEC 60539-2:2019) Temperaturkoeffizienten
(IEC 60539-2:2019)
This European Standard was approved by CENELEC on 2019-08-28. 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 national standards may be obtained on application to the CEN-CENELEC
Management Centre 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 language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60539-2:2019 E
European foreword
The text of document 40/2672/FDIS, future edition 2 of IEC 60539-2, prepared by IEC/TC 40
"Capacitors and resistors for electronic equipment" was submitted to the IEC-CENELEC parallel vote
and approved by CENELEC as EN IEC 60539-2:2019.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-05-23
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-08-23
document have to be withdrawn
This document supersedes EN 60539-2:2004 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 60539-2:2019 was approved by CENELEC as a European
Standard without any modification.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60068-2-2 2007 Environmental testing - Part 2-2: Tests - EN 60068-2-2 2007
Test B: Dry heat
IEC 60068-2-14 2009 Environmental testing - Part 2-14: Tests - EN 60068-2-14 2009
Test N: Change of temperature
IEC 60068-2-58 2015 Environmental testing - Part 2-58: Tests - EN 60068-2-58 2015
Test Td: Test methods for solderability,
resistance to dissolution of metallization
and to soldering heat of surface mounting
devices (SMD)
+ A1 2017 + A1 2018
IEC 60068-2-78 - Environmental testing - Part 2-78: Tests - EN 60068-2-78 -
Test Cab: Damp heat, steady state
IEC 60539-1 2016 Directly heated negative temperature EN 60539-1 2016
coefficient thermistors - Part 1: Generic
specification
IEC 61193-2 2007 Quality assessment systems - Part 2: EN 61193-2 2007
Selection and use of sampling plans for
inspection of electronic components and
packages
IEC 60539-2 ®
Edition 2.0 2019-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Directly heated negative temperature coefficient thermistors –
Part 2: Sectional specification – Surface mount negative temperature coefficient
thermistors
Thermistances à coefficient de température négatif à chauffage direct –
Partie 2: Spécification intermédiaire – Thermistances à coefficient de
température négatif pour montage en surface
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.040.30 ISBN 978-2-8322-7098-1
– 2 – IEC 60539-2:2019 IEC 2019
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Information to be given in a detail specification . 7
4.1 General . 7
4.2 Outline drawing and dimensions . 7
4.3 Mounting . 7
4.4 Ratings and characteristics . 7
4.4.1 Particular characteristics . 7
4.4.2 Marking . 7
5 Preferred ratings and characteristics . 7
5.1 Tolerances on rated zero-power resistance . 7
5.2 Climatic categories . 8
6 Quality assessment procedures . 8
7 Test and measurement procedures . 8
7.1 Mounting . 8
7.2 Drying and recovery . 8
7.2.1 Drying . 8
7.2.2 Recovery . 8
7.3 Visual examination and check of dimensions . 8
7.3.1 Visual examination . 8
7.3.2 Requirements . 9
7.3.3 Marking . 10
7.3.4 Dimensions . 11
7.4 Electrical tests . 11
7.4.1 Zero-power resistance . 11
7.4.2 B-value or resistance ratio . 11
7.4.3 Resistance/temperature characteristic . 11
7.5 Thermal tests . 12
7.5.1 Dissipation factor (δ) . 12
7.5.2 Thermal time constant by cooling after self-heating (τ ) . 12
c
7.6 Resistance to soldering heat . 12
7.6.1 General . 12
7.6.2 Initial measurement . 12
7.6.3 Test conditions . 12
7.6.4 Recovery . 12
7.6.5 Final inspection, measurements and requirements. 12
7.7 Solderability . 13
7.7.1 General . 13
7.7.2 Test conditions . 13
7.7.3 Recovery . 13
7.7.4 Final inspection, measurements and requirements. 13
7.8 Rapid change of temperature . 13
7.9 Thermal shock . 13
IEC 60539-2:2019 IEC 2019 – 3 –
7.10 Damp heat, steady state . 14
7.11 Endurance . 14
7.11.1 Endurance at T and P . 14
3 max
7.11.2 Endurance at upper category temperature . 15
7.12 Shear (adhesion) test . 15
7.13 Substrate bending test . 15
7.14 Component solvent resistance . 15
7.15 Solvent resistance of marking . 15
Annex A (normative) Guide for the specification and coding of dimensions of surface
mount negative temperature coefficient thermistors . 16
Annex B (normative) Quality assessment procedure . 17
B.1 Primary stage of manufacture . 17
B.2 Structurally similar components .
...
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