IEC 60115-8:2009

Fixed resistors for use in electronic equipment - Part 8: Sectional specification - Fixed surface mount resistors

IEC 60115-8:2009 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 terminations and are primarily intended to be mounted directly on to a circuit board. 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 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);
- 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 test, 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 ohm resistors (jumpers).

Résistances fixes utilisés dans les équipements électroniques - Partie 8: Spécification intermédiaire - Résistances fixes pour montage en surface

La CEI 60115-8:2009 s'applique aux résistances fixes pour montage en surface utilisées dans les équipements électroniques. Ces résistances sont généralement décrites selon des types (différentes formes géométriques) et des modèles (différentes dimensions). Elles comportent des extrémités métallisées et sont conçues principalement pour être montées directement sur un circuit imprimé. Les principales modifications techniques par rapport à la première édition sont les suivantes:
- introduction d'une classification de produit basée sur les exigences de l'application;
- extension de la liste des modèles et des dimensions;
- utilisation d'un domaine d'application étendu avec des définitions de classe de stabilité;
- extension des listes de valeurs préférentielles des caractéristiques nominales;
- inclusion de conditions d'essai et d'exigences pour le brasage sans plomb, pour les surcharges périodiques, pour la résistance aux décharges électrostatiques (DES);
- inclusion d'une nouvelle série de sévérités pour un essai de cisaillement;
- inclusion de définitions d'une carte d'essai;
- remplacement du niveau d'assurance de la qualité E et des autres possibles par l'unique niveau d'assurance de la qualité EZ qui est conforme aux exigences de l'approche "zéro défaut";
- inclusion d'un essai d'endurance étendu, d'un essai d'inflammabilité, d'un essai d'échauffement, d'essais de vibrations, d'un essai étendu de variation rapide de température et d'un essai de surcharge sous forme d'une simple impulsion de tension élevée;
- inclusion d'exigences applicable aux résistances de valeurs 0 ohm (cavaliers).

General Information

• Status: Published
• Publication Date: 25-Jan-2009
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 31.040.10 - Fixed resistors
• Technical Committee: TC 40 - Capacitors and resistors for electronic equipment
• Current Stage: DELPUB - Deleted Publication
• Start Date: 30-Jun-2020
• Completion Date: 25-Aug-2023

Relations

• Revised: IEC 60115-8:2023 - Fixed resistors for use in electronic equipment - Part 8: Sectional specification: Fixed surface mount resistors
• Effective Date: 05-Sep-2023
• Revises: IEC 60115-8:1989/AMD1:2000 - Amendment 1 - Fixed resistors for use in electronic equipment. Part 8: Sectional specification: Fixed chip resistors
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60115-8 ®
Edition 2.0 2009-01
INTERNATIONAL
STANDARD
Fixed resistors for use in electronic equipment –
Part 8: Sectional specification – Fixed surface mount resistors

All rights reserved. Unless otherwise specified, 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
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,

please contact the address below or your local IEC member National Committee for further information.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: [e-mail]
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About the IEC
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International Standards for all electrical, electronic and related technologies.

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IEC 60115-8 ®
Edition 2.0 2009-01
INTERNATIONAL
STANDARD
Fixed resistors for use in electronic equipment –
Part 8: Sectional specification – Fixed surface mount resistors

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
X
ICS 31.040.10 ISBN 978-2-88910-060-6
– 2 – 60115-8 © IEC:2009(E)
CONTENTS
FOREWORD.4

1 General .6

1.1 Scope.6

1.2 Object .6

1.3 Normative references .6

1.4 Information to be specified 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 dissipation.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 Style 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 .13
2.2.4 Limiting element voltage U .14
max
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 electrostatic 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(E) – 3 –
3.1 General .21

3.2 Definitions .21

3.2.1 Primary stage of manufacture.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 periodic testing .23

3.5 Quality conformance inspection.23
3.6 Technology approval procedures.23
3.7 Delayed delivery.23
Annex A (normative) 0 Ω 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 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.10
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 resistance lower than 100 mΩ .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 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 conformance inspection: Periodic tests.32

– 4 – 60115-8 © IEC:2009(E)
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 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 Commi
...

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

Résistances fixes utilisées dans les équipements électroniques –
Partie 8: Spécification intermédiaire – Résistances fixes pour montage en
surface
All rights reserved. Unless otherwise specified, 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
either IEC or IEC's member National Committee in the country of the requester.
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please contact the address below or your local IEC member National Committee for further information.

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publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

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International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

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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

Résistances fixes utilisées dans les équipements électroniques –

Partie 8: Spécification intermédiaire – Résistances fixes pour montage en

surface
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX X
ICS 31.040.10 ISBN 978-2-83220-594-5

– 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 specified 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 dissipation . 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 Style 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 . 13
2.2.4 Limiting element voltage U . 14
max
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 electrostatic 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 manufacture . 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 periodic testing . 23
3.5 Quality conformance inspection . 23
3.6 Technology approval procedures . 23
3.7 Delayed delivery . 23
Annex A (normative) 0 Ω 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 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 . 10
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 resistance lower than 100 mΩ .
...