1、 IEC 60115-8 Edition 2.0 2009-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Fixed resistors for use in electronic equipment Part 8: Sectional specification Fixed surface mount resistors Rsistances fixes utilises dans les quipements lectroniques Partie 8: Spcification intermdiaire Rsistances fixes p
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16、ion 2.0 2009-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Fixed resistors for use in electronic equipment Part 8: Sectional specification Fixed surface mount resistors Rsistances fixes utilises dans les quipements lectroniques Partie 8: Spcification intermdiaire Rsistances fixes pour montage en su
17、rface INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE X ICS 31.040.10 PRICE CODE CODE PRIX ISBN 978-2-83220-594-5 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sur
18、e that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 60115-8 IEC:2009 CONTENTS FOREWORD . 4 1 General 6 1.1 Scope 6 1.2 Object . 6 1.3 Normative references 6 1.4 Information to be speci
19、fied in a detail specification 7 1.4.1 Outline drawing . 7 1.4.2 Style and dimensions 7 1.4.3 Climatic category . 7 1.4.4 Limits of resistance change after testing 7 1.4.5 Resistance range. 7 1.4.6 Tolerances on nominal resistance 7 1.4.7 Temperature coefficient of resistance 7 1.4.8 Rated dissipati
20、on . 7 1.4.9 Limiting element voltage 8 1.4.10 Insulation voltage 8 1.4.11 Insulation resistance 8 1.4.12 Marking . 8 1.4.13 Ordering information 8 1.4.14 Mounting . 8 1.5 Product classification 8 2 Preferred characteristics, ratings and test severities . 9 2.1 Preferred characteristics . 9 2.1.1 St
21、yle and dimensions 9 2.1.2 Preferred climatic categories . 11 2.1.3 Variation of resistance with temperature 11 2.1.4 Limits for change in resistance 12 2.2 Preferred values of ratings 13 2.2.1 Resistance 13 2.2.2 Tolerances on resistance . 13 2.2.3 Rated dissipation P 7013 2.2.4 Limiting element vo
22、ltage U max14 2.2.5 Insulation resistance 14 2.2.6 Insulation voltage 14 2.3 Preferred test severities 14 2.3.1 Short time overload . 14 2.3.2 Solderability 15 2.3.3 Resistance to soldering heat . 15 2.3.4 Shear (adhesion) test 16 2.3.5 Periodic pulse overload test . 17 2.3.6 Resistance to electrost
23、atic discharge (ESD) 17 2.3.7 Component solvent resistance . 18 2.3.8 Solvent resistance of marking 18 2.4 Preparation of specimen 18 2.4.1 Drying . 18 2.4.2 Mounting of components 18 3 Quality assessment procedures 21 60115-8 IEC:2009 3 3.1 General . 21 3.2 Definitions . 21 3.2.1 Primary stage of m
24、anufacture 21 3.2.2 Structurally similar components . 21 3.2.3 Assessment level EZ . 21 3.3 Formation of inspection lots . 21 3.4 Qualification approval 22 3.4.1 Qualification approval on the basis of the fixed sample size procedure 22 3.4.2 Qualification approval on the basis of lot-by-lot and peri
25、odic testing 23 3.5 Quality conformance inspection . 23 3.6 Technology approval procedures . 23 3.7 Delayed delivery 23 Annex A (normative) 0 resistors (Jumper) 36 A.1 Information to be specified in a detail specification . 36 A.2 Preferred characteristics. 36 A.3 Preferred ratings 36 A.4 Preferred
26、severities 36 A.5 Test schedule for qualification approval 37 A.6 Test schedule for quality conformance inspection . 37 Annex B (informative) Letter symbols and abbreviations 38 B.1 Letter symbols 38 B.2 Abbreviations . 39 Bibliography 40 Figure 1 Shape and dimensions of rectangular (RR) resistors 1
27、0 Figure 2 Shape and dimensions of cylindrical (RC) resistors 10 Figure 3 Derating curve . 14 Figure 4 Basic layout for mechanical, environmental and electrical tests, Kelvin (4 point) connections 19 Figure 5 Attachment of the sense line for Kelvin (4 point) connections for specimen with nominal res
28、istance lower than 100 m 19 Figure 6 Basic layout for mechanical, environmental and electrical tests 20 Table 1a Preferred styles for rectangular (RR) resistors . 9 Table 1b Preferred styles for cylindrical (RC) resistors . 10 Table 2 Permitted change of resistance . 11 Table 3a Limits for change of
29、 resistance 12 Table 3b Limits for change of resistance 13 Table 4 Shear test force . 17 Table 5 Soldering pad dimensions . 20 Table 6 Test schedule for qualification approval. 24 Table 7a Test schedule for quality conformance inspection: Lot-by-lot tests . 30 Table 7b Test schedule for quality conf
30、ormance inspection: Periodic tests . 32 4 60115-8 IEC:2009 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT Part 8: Sectional specification Fixed surface mount resistors FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organiza
31、tion 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
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40、s 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 be held responsible for identifying any or all such patent rights. International Standard
41、IEC 60115-8 has been prepared by IEC technical committee 40: Capacitors and resistors for electronic equipment. This second edition cancels and replaces the first edition, published in 1989, and its Amendment 1 (2000). This second edition constitutes a technical revision and includes test conditions
42、 and requirements for lead-free soldering and assessment procedures meeting the requirements of a “zero defect” approach. The major technical changes with regard to the first edition are the following: introduction of a product classification based on application requirements; extension of the list
43、of styles and dimensions; use of an extended scope of stability class definitions; extension of the lists of preferred values of ratings inclusion of test conditions and requirements for lead-free soldering, for periodic overload and for resistance to electrostatic discharge (ESD); 60115-8 IEC:2009
44、5 inclusion of a new set of severities for a shear test; inclusion of definitions for a test board; replacement of assessment level E and possible others by the sole assessment level EZ, meeting the requirements of a “zero defect” approach; inclusion of an extended endurance test, a flammability tes
45、t, a temperature rise test, vibration tests, an extended rapid change of temperature test, and a single pulse high- voltage overload test; inclusion of requirements applicable to 0 resistors (jumpers). This bilingual version (2013-01) corresponds to the monolingual English version, published in 2009
46、-01. The text of this standard is based on the following documents: FDIS Report on voting 40/1933/FDIS 40/1970/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 standard has not been vote
47、d upon. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all the parts of the IEC 60115 series, under the general title Fixed resistors for use in electronic equipment, can be found on the IEC website. The committee has decided that the contents of this
48、publication will remain unchanged 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. 6 60115-8 IEC:2009
49、 FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT Part 8: Sectional specification Fixed surface mount resistors 1 General 1.1 Scope This part of IEC 60115 is applicable to fixed surface mount resistors for use in electronic equipment. These resistors are typically described according to types (different geometric shapes) and styles (different dimensions). They have metallized t
