1、 IEC 60738-1-1 Edition 3.0 2008-02 INTERNATIONAL STANDARD NORME INTERNATIONALE Thermistors Directly heated positive step-function temperature coefficient Part 1-1: Blank detail specification Current limiting application Assessment level EZ Thermistances Coefficient de temprature positif de fonction
2、chelon chauffage direct Partie 1-1: Spcification particulire cadre Application de la limitation de courant Niveau dassurance EZ IEC 60738-1-1:2008 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publicat
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16、ommentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 60738-1-1 Edition 3.0 2008-02 INTERNATIONAL STANDARD NORME INTERNATIONALE Thermistors Directly heated positive step-function temperature coefficient Part 1-1: Blank detail specification Current limiting ap
17、plication Assessment level EZ Thermistances Coefficient de temprature positif de fonction chelon chauffage direct Partie 1-1: Spcification particulire cadre Application de la limitation de courant Niveau dassurance EZ INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONA
18、LE N ICS 31.040.30 PRICE CODE CODE PRIX ISBN 978-2-83220-771-0 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez
19、 vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 60738-1-1 IEC:2008 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ THERMISTORS DIRECTLY HEATED POSITIVE STEP-FUNCTION TEMPERATURE COEFFICIENT Part 1-1: Blank detail specification Current limiting application Assessment level
20、 EZ 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
21、 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 entrust
22、ed 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 Internat
23、ional 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 eac
24、h 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 IE
25、C 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 Publications transparently to the maximum extent possible in the
26、ir national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declar
27、ed to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National
28、Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is dra
29、wn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not
30、 be held responsible for identifying any or all such patent rights. International Standard IEC 60738-1-1 has been prepared by IEC technical committee 40: Capacitors and resistors for electronic equipment. This third edition cancels and replaces the second edition issued in 1998. It constitutes a tec
31、hnical revision. This edition contains changes with respect to the referenced subclauses of the revised generic specification IEC 60738-1. This publication is to be read in conjunction with IEC 60738-1. This bilingual version (2013-05) corresponds to the monolingual English version, published in 200
32、8-02. 60738-1-1 IEC:2008 3 The text of this standard is based on the following documents: FDIS Report on voting 40/1874/FDIS 40/1891/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. The French version of this stan
33、dard has not been voted upon. The list of all parts of the IEC 60738 series, under the (new) general title Thermistors Directly heated positive step-function temperature coefficient, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchange
34、d until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 4 60738-1-1 IEC:2008 INTRODUCTION Blank detail spe
35、cification A blank detail specification is a supplementary document to the generic specification and contains requirements for style and layout and minimum content of detail specifications. Detail specifications not complying with these requirements shall not be considered as being in accordance wit
36、h IEC specifications nor shall they so be described. In the preparation of detail specifications the content of IEC 60738-1:2006,1.4 shall be taken into account. The numbers between brackets on the first page correspond to the following information which shall be inserted in the position indicated.
37、Identification of the detail specification 1 The “International Electrotechnical Commission“ or the National Standards Organization under whose authority the detail specification is drafted. 2 The IEC or National Standards number of the detail specification, date of issue and any further information
38、 required by the national system. 3 The number and issue number of the IEC or national generic specification. 4 The IEC number of the blank detail specification. Identification of the thermistor 5 A short description of the type of thermistor. 6 Information on typical construction (if applicable). N
39、OTE When the thermistor is not designed for use on printed boards, this should clearly be stated in the detail specification in this position. 7 Outline drawing with main dimensions which are of importance for interchangeability and/or reference to the national or international documents for outline
40、s. Alternatively, this drawing may be given in an annex to the detail specification. 8 Application or group of applications covered and/or assessment level. 9 Reference data on the most important properties, to allow comparison between the various thermistor types. 60738-1-1 IEC:2008 5 1 IEC 60738-1
41、-1-XXX 2 QC 440001XXXXXX ELECTRONIC COMPONENTS OF ASSESSED IEC 60738-1-1 4 QUALITY IN ACCORDANCE WITH: QC 440001 3 DIRECTLY HEATED POSITIVE STEP-FUNCTION TEMPERATURE COEFFICIENT THERMISTORS 5 Outline drawing: see 1.2 FOR CURRENT LIMITING . angle projection APPLICATION MODIFIED FERRO-ELECTRIC 6 7 CER
42、AMIC MATERIAL Other shapes are permitted within the dimensions given Assessment level: EZ 8 Information on the availability of components qualified to this detail specification is given in the Register of Approvals. 9 6 60738-1-1 IEC:2008 THERMISTORS DIRECTLY HEATED POSITIVE STEP-FUNCTION TEMPERATUR
43、E COEFFICIENT Part 1-1: Blank detail specification Current limiting application Assessment level EZ 1 General data 1.1 Method(s) of mounting (to be inserted) (See IEC 60738-1:2006, 7.30). 1.2 Dimensions (All dimensions are in millimetres or inches and millimetres; it shall be stated which dimensions
44、 are suitable for gauging). Dimensioned drawing(s) shall be given in the detail specification. If necessary, the dimensions may be listed in tabular form with reference to styles or codes. 1.3 Coating The detail specification shall state a) whether the thermistor is insulated or non-insulated, b) th
45、e material, c) the colour, if applicable. 1.4 Terminations The detail specification shall state whether the terminations are suitable for soldering. If they are not, suitable methods of connection shall be stated for example: welding, clamping or crimping. 1.5 Flammability The detail specification s
46、hall state whether the thermistor is actively or passively flammable if applicable. The test method shall be given in the test schedule. 1.6 Resistance to solvents The detail specification shall state whether the coating and the marking of the thermistor are solvent resistant if applicable. The test
47、 methods shall be given in the test schedule. 1.7 Packaging The detail specification shall give the following information (if required): a) whether bulk packed or taped and if taped, drawing or references; b) the dimensions of the immediate packaging and the number of thermistors packed; c) the dime
48、nsions of the outer package and the number of immediate packages; 60738-1-1 IEC:2008 7 d) methods of disposal of the packaging material. 1.8 Electrical data/Ratings and characteristics The detail specification shall give units and tolerances or limiting values for the following para- meters. If nece
49、ssary, electrical data may be listed in tabular form, with reference to styles and codes. Upper/Lower category temperatures (UCT/LCT); Operating temperature range at maximum voltage; Maximum voltage (U max . ); Zero-power resistance (R T ); Isolation voltage (insulated thermistors only); Insulation resistance (insulated thermistors only); Tripping current (I t
