1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI British StandardsWB9423_BSI_StandardColCov_noK_AW:BSI FRONT COVERS 5/9/08 12:55 Page 1Directly heated negative temperature coefficient thermistors Part 1-1: Blank detail specification Sensing applica
2、tion Assessment level EZDD IEC/PAS 60539-1-1:2008National forewordThis Draft for Development is the UK implementation of IEC/PAS 60539-1-1:2009.This publication is not to be regarded as a British Standard.It is being issued in the Draft for Development series of publications and is ofa provisional n
3、ature. It should be applied on this provisional basis, so thatinformation and experience of its practical application can be obtained.A PAS is a Technical Specification not fulfilling the requirements for a stan-dard, but made available to the public and established in an organizationoperating under
4、 a given procedure.A review of this Draft for Development will be carried out not later than threeyears after its publication.Notification of the start of the review period, with a request for the submis-sion of comments from users of this Draft for Development, will be made inan announcement in the
5、 appropriate issue of Update Standards. Accordingto the replies received, the responsible BSI Committee will judge whether thevalidity of the PAS should be extended for a further three years or what otheraction should be taken and pass their comments on to the relevant interna-tional committee.Obser
6、vations which it is felt should receive attention before the official callfor comments will be welcomed. These should be sent to the Secretary of theresponsible BSI Technical Committee at British Standards House, 389 ChiswickHigh Road, London W4 4AL.The UK participation in its preparation was entrus
7、ted to Technical CommitteeEPL/40X, Capacitors and resistors for electronic equipment.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its
8、correct application. BSI 2009ISBN 978 0 580 64286 9ICS 31.040.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This Draft for Development was published under the authority of theStandards Policy and Strategy Committee on 3 2009Amendments issued since publicationAmd.
9、No. Date Text affectedBRITISH STANDARDDD IEC/PAS 60539-1-1:2008June0IEC/PAS 60539-1-1Edition 1.0 2008-11PUBLICLY AVAILABLE SPECIFICATIONPRE-STANDARD Directly heated negative temperature coefficient thermistors Part 1-1: Blank detail specification Sensing application Assessment level EZ INTERNATIONAL
10、 ELECTROTECHNICAL COMMISSION MICS 31.040.30 PRICE CODEISBN 2-8318-1016-5 Registered trademark of the International Electrotechnical Commission 2 PAS 60539-1-1 IEC:2008(E) CONTENTS FOREWORD.3 INTRODUCTION.5 1 General data 6 1.1 Method(s) of mounting (to be inserted) 6 1.2 Dimensions .6 1.3 Coating .6
11、 1.4 Terminations .6 1.5 Flammability6 1.6 Resistance to solvents 6 1.7 Packaging .6 1.8 Electrical data/Ratings and characteristics 6 1.9 Normative references 7 1.10 Marking .7 1.11 Ordering information7 1.12 Additional information (not for inspection purposes) 7 1.13 Additional or increased severi
12、ties or requirements to those specified in the generic sectional specification.7 2 Inspection requirements .7 2.1 Procedures7 Table 1 Test schedule for quality conformance inspection: lot-by-lot 9 Table 2 Test schedule for quantity conformance inspection: periodic .10 DD IEC/PAS 60539-1-1:2008PAS 60
13、539-1-1 IEC:2008(E) 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ DIRECTLY HEATED NEGATIVE TEMPERATURE COEFFICIENT THERMISTORS Part 1-1: Blank detail specification Sensing application Assessment level EZ FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for
14、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 publishe
15、s 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 part
16、icipate 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 be
17、tween 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 Publicat
18、ions 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
19、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 their national and regional publications. Any divergence between any IEC Publication and the correspondi
20、ng 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 declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest
21、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 Committees for any personal injury, property damage or other damage of any nature whatsoever, whether
22、 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 drawn to the Normative references cited in this publication. Use of the referenced publications is indis
23、pensable 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 be held responsible for identifying any or all such patent rights. A PAS is a technical specificatio
24、n not fulfilling the requirements for a standard, but made available to the public. This PAS shall be read in conjunction with IEC 60539-1:2008. IEC-PAS 60539-1-1 has been processed by IEC technical committee 40: Capacitors and resistors for electronic equipment. The text of this PAS is based on the
25、 following document: This PAS was approved for publication by the P-members of the committee concerned as indicated in the following document Draft PAS Report on voting 40/1927/PAS 40/1934/RVD DD IEC/PAS 60539-1-1:2008 4 PAS 60539-1-1 IEC:2008(E) Following publication of this PAS, which is a pre-sta
26、ndard publication, the technical committee or subcommittee concerned may transform it into an International Standard. This PAS shall remain valid for an initial maximum period of 3 years starting from the publication date. The validity may be extended for a single 3-year period, following which it s
27、hall be revised to become another type of normative document, or shall be withdrawn. DD IEC/PAS 60539-1-1:2008PAS 60539-1-1 IEC:2008(E) 5 DIRECTLY HEATED NEGATIVE TEMPERATURE COEFFICIENT THERMISTORS Part 1-1: Blank detail specification Sensing application Assessment level EZ INTRODUCTION Blank detai
28、l specification 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 accordanc
29、e with IEC specifications nor shall they so be described. In the preparation of detail specifications, the content of 1.1 of the generic specification shall be taken into account. The numbers between brackets on the first page correspond to the following information which shall be inserted in the po
30、sition indicated. 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 f
31、urther information 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
32、(if applicable). NOTE 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 doc
33、uments for outlines. 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. DD IEC/PAS 60539
34、-1-1:2008 6 PAS 60539-1-1 IEC:2008(E) 1 General data 1.1 Method(s) of mounting (to be inserted) (See 4.4 of IEC 60539-1:2008.) 1.2 Dimensions (All dimensions are in millimetres or inches and millimetres; it shall be stated which dimensions are suitable for gauging.) Dimensioned drawing(s) shall be g
35、iven 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) the material; c) the colour, if applicable. 1.4 Terminations T
36、he 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 shall state whether the thermistor is actively or passively f
37、lammable, 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 methods shall be given in the test schedule. 1.7 Packagin
38、g 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 dimensions of the outer package and the number of immediate pa
39、ckages; 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 parameters. If necessary, electrical data may be listed in tabular form, with reference to styles an
40、d codes. Upper/Lower category temperatures (max/min); Maximum current at ambient temperature (Imax ); Zero-power resistance (RT); Resistance-temperature characteristics; Maximum power dissipation at ambient temperature (Pmax R); DD IEC/PAS 60539-1-1:2008PAS 60539-1-1 IEC:2008(E) 7 B-value; Isolation
41、 voltage (insulated thermistors only); etc. 1.9 Normative references 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 a
42、mendments) applies. IEC 60539-1:2008, Directly heated negative temperature coefficient thermistors Part 1: Generic specification 1.10 Marking The marking of the thermistors and package containing the thermistors shall be in accordance with the requirements of 4.5.2 of IEC 60539-1:2008. The details o
43、f the marking of the thermistors and package containing the thermistor shall be given in full in the detail specification. 1.11 Ordering information Orders for thermistors covered by this specification shall contain, in clear or in coded form, the following minimum information: a) style reference; b
44、) maximum current at ambient temperature; c) number and issue reference of the detail specification; d) maximum dissipation power at ambient temperature; e) B-value. 1.12 Additional information (not for inspection purposes) 1.13 Additional or increased severities or requirements to those specified i
45、n the generic sectional specification NOTE Additions or increased requirements should be specified only when essential. 2 Inspection requirements 2.1 Procedures 2.1.1 For qualification approval, the procedures shall be in accordance with the generic specification, IEC 60539-1:2008, 3.4. 2.1.2 For qu
46、ality conformance inspection, the test schedules (see Tables 1 and 2) include sampling, periodicity, severities and requirements. The formation of inspection lots is covered by the generic specification IEC 60539-1:2008, 3.5. The following list applies to the test schedules developed in Tables 1 and
47、 2: 1) Subclause numbers of tests and performance requirements refer to the generic specification IEC 60539-1 and Clause 1 of this Blank Detail Specification. 2) Number to be tested: sample size as directly allotted to the code letter for IL in table IIA of IEC 60410:1973 (Single sampling plans for
48、normal inspection). DD IEC/PAS 60539-1-1:2008 8 PAS 60539-1-1 IEC:2008(E) 3) In these tables: p is the periodicity (in months) n is the sample size c is the acceptance criterion (permitted number of non-conforming items) D indicates a destructive test ND indicates a non-destructive test IL is the in
49、spection level 4) The temperature at which the zero-power resistance shall be measured is the temperature specified in the detail specification. This temperature shall be stated, where required, in the test schedule. 5) The specimens used for this group may, at the discretion of the manufacturer, be used for any subsequent group which is identified as being “destructive“. 6) The soldering solderability and soldering resistance to heat tests shall only be applied wh
