EN 62319-1:2005

Polymeric thermistors - Directly heated positive step function temperature coefficient - Part 1: Generic specification

Prescribes terms and methods of test for polymeric positive temperature coefficient thermistors, insulated and non-insulated types, typically intended for use in current limiting and overcurrent protection applications. It establishes standard terms, inspection procedures and methods of test for use in detail specifications for Qualification Approval and for Quality Assessment Systems for electronic components.

Temperaturabhängige Widerstände aus Polymerwerkstoffen - Direkt geheizte temperaturabhängige Widerstände mit positivem Temperaturkoeffizienten - Teil 1: Fachgrundspezifikation

Thermistances polymères - Coefficient de température positif de fonction échelon à chauffage direct - Partie 1: Spécification générique

Prescribes terms and methods of test for polymeric positive temperature coefficient thermistors, insulated and non-insulated types, typically intended for use in current limiting and overcurrent protection applications. It establishes standard terms, inspection procedures and methods of test for use in detail specifications for Qualification Approval and for Quality Assessment Systems for electronic components.

Polimerni termistorji – Neposredno ogrevani s pozitivnim temperaturnim koeficientom – 1. del: Generična specifikacija (IEC 62319-1:2005)

General Information

• Status: Published
• Publication Date: 10-Mar-2005
• ICS: 31.040.30 - Thermistors
• Technical Committee: CLC/SR 40 - Capacitors and resistors for electronic equipment
• Drafting Committee: IEC/TC 40 - IEC_TC_40
• Parallel Committee: IEC/TC 40 - IEC_TC_40
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 11-Mar-2005
• Completion Date: 11-Mar-2005
• Ref Project: SIST EN 62319-1:2005 - Polymeric thermistors - Directly heated positive step function temperature coefficient -- Part 1: Generic specification

Standards Content (Sample)

STANDARDPolimerni termistorji – Neposredno ogrevani s pozitivnim temperaturnim koeficientom – 1. del: Generična specifikacija (IEC 62319-1:2005)Polymeric thermistors – Directly heated positive step function temperature coefficient – Part 1: Generic specification (IEC 62319-1:2005)©
Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljenoReferenčna številkaSIST EN 62319-1:2005(en)ICS31.040.30

EUROPEAN STANDARD
EN 62319-1 NORME EUROPÉENNE EUROPÄISCHE NORM
March 2005 CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62319-1:2005 E
ICS 31.040.30
English version
Polymeric thermistors -
Directly heated positive step function temperature coefficient Part 1: Generic specification (IEC 62319-1:2005)
Thermistances polymères -
Coefficient de température positif
de fonction échelon à chauffage direct Partie 1: Spécification générique (CEI 62319-1:2005)
Temperaturabhängige Widerstände
aus Polymerwerkstoffen -
Direkt geheizte temperaturabhängige Widerstände mit positivem Temperaturkoeffizienten Teil 1: Fachgrundspezifikation (IEC 62319-1:2005)
This European Standard was approved by CENELEC on 2005-02-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

at national level by publication of an identical
national standard or by endorsement
(dop)
2005-12-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow)
2008-02-01 Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 62319-1:2005 was approved by CENELEC as a European Standard without any modification. __________

- 3 - EN 62319-1:2005
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications The following referenced documents are indispensable for the application 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 Where an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60027-1
- 1) Letter symbols to be used in electrical technology Part 1: General
HD 60027-1 2004 2) IEC 60050 Series International Electrotechnical Vocabulary EN 60050 Series IEC 60068-1 - 1) Environmental testing Part 1: General and guidance
EN 60068-1 1994 2) IEC 60068-2-6 - 1) Part 2: Tests - Test Fc: Vibration (sinusoidal)
EN 60068-2-6 1995 2) IEC 60068-2-14 - 1) Part 2: Tests - Test N: Change of temperature
EN 60068-2-14 1999 2) IEC 60068-2-20 - 1) Part 2: Tests - Test T: Soldering
HD 323.2.20 S3 1988 2) IEC 60068-2-21 - 1) Part 2-21: Tests - Test U: Robustness of terminations and integral mounting devices
EN 60068-2-21 1999 2) IEC 60068-2-27 - 1) Part 2: Tests - Test Ea and guidance: Shock
EN 60068-2-27 1993 2) IEC 60068-2-29 - 1) Part 2: Tests - Test Eb and guidance: Bump
EN 60068-2-29 1993 2) IEC 60068-2-45 - 1) Part 2: Tests - Test Xa and guidance: Immersion in cleaning solvents
EN 60068-2-45 1992 2) IEC 60294 - 1) Measurement of the dimensions of a cylindrical component having two axial terminations
- - IEC 60410 - 1) Sampling plans and procedures for inspection by attributes
- - IEC 60617
database Graphical symbols for diagrams
- -
1) Undated reference.
2) Valid edition at date of issue.

- - IECQ 001003 - 1) IEC Quality Assessment System for Electronic Components (IECQ) - Guidance documents
- - ISO 1000 - 1) SI units and recommendations for the use of their multiples and of certain other units
- -
INTERNATIONAL STANDARD IEC62319-1 First edition2005-02 Polymeric thermistors – Directly heated positive step function temperature coefficient – Part 1: Generic specification
 IEC 2005

Copyright - all rights reserved No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Electrotechnical Commission,
3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone: [phone] Telefax: [phone] E-mail: [e-mail]
Web: www.iec.ch V For price, see current catalogue PRICE CODE
Commission Electrotechnique InternationaleInternational Electrotechnical Commission

– 2 – 62319-1  IEC:2005(E) CONTENTS FOREWORD.4
1 General.6 1.1 Scope.6 1.2 Normative references.6 2 Technical data.7 2.1 Units and symbols.7 2.2 Terms and definitions.7 2.3 Preferred values.10 2.4 Marking.11 3 Quality assessment procedures.11 3.1 General.11 3.2 Primary stage of manufacture.11 3.3 Subcontracting.12 3.4 Structurally similar components.12 3.5 Qualification approval procedures.12 3.6 Rework and repair.18 3.7 Release for delivery.18 3.8 Certified test records of released lots.19 3.9 Delayed delivery.19 3.10 Alternative test methods.19 3.11 Manufacture outside the geographical limits of IECQ NSIs.19 3.12 Unchecked parameters.19 4 Test and measurement procedures.19 4.1 Standard conditions for testing.19 4.2 Drying and recovery.20 4.3 Visual inspection and check of dimensions.20 4.4 Zero power resistance.21 4.5 Insulation resistance (for insulated types only).21 4.6 Voltage proof (for insulated types only).22 4.7 Robustness of terminations (for leaded types only).22 4.8 Soldering.23 4.9 Mounting.23 4.10 Rapid change of temperature.24 4.11 Climatic sequence.24 4.12 Cycle life testing.25 4.13 Trip endurance.27 4.14 Trip current.28 4.15 Hold current.28 4.16 Residual current and power dissipation.29 4.17 Time-to-trip.29 4.18 Cold environmental electrical cycling.30 4.19 Thermal runaway.30

62319-1  IEC:2005(E) – 3 – Annex A (normative)
Fixed sample size test schedules for qualification approval.31 Annex B (normative)
Vibration-, bump-, shock-, shear-, substrate bending test.32 B.1 Vibration.32 B.2 Bump.32 B.3 Shock.33 B.4 Shear (adhesion) test.33 B.5 Substrate bending test.33
Figure 1 – Test schedule flow chart.15 Figure 2 – Circuit for Trip endurance.28
Table 1 – Fixed sample size test schedule for qualification approval of Polymeric PTC thermistors for current limitation, assessment level EZ.16 Table 2 – Quality conformance inspection for lot-by-lot inspection.17 Table 3 – Quality conformance inspection for periodic testing.18 Table 4 – Loading weight for wire terminations.22 Table 5 – Number of cycles.25

– 4 – 62319-1  IEC:2005(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
POLYMERIC THERMISTORS – DIRECTLY HEATED POSITIVE STEP FUNCTION
TEMPERATURE COEFFICIENT – Part 1: Generic specification
FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Pu
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