IEC 60115-8-1:2014

IEC 60115-8-1 ®
Edition 2.0 2014-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fixed resistors for use in electronic equipment –
Part 8-1: Blank detail specification: Fixed surface mount (SMD) low power film
resistors for general electronic equipment, classification level G

Résistances fixes utilisées dans les équipements électroniques –
Partie 8-1: Spécification particulière cadre: Résistances fixes à couche et à faible
dissipation pour montage en surface (CMS), pour les équipements électroniques
universels, niveau G de classification
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IEC 60115-8-1 ®
Edition 2.0 2014-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fixed resistors for use in electronic equipment –

Part 8-1: Blank detail specification: Fixed surface mount (SMD) low power film

resistors for general electronic equipment, classification level G

Résistances fixes utilisées dans les équipements électroniques –

Partie 8-1: Spécification particulière cadre: Résistances fixes à couche et à faible

dissipation pour montage en surface (CMS), pour les équipements électroniques

universels, niveau G de classification

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX X
ICS 31.040.10 ISBN 978-2-8322-1870-9

– 2 – IEC 60115-8-1:2014 © IEC 2014

CONTENTS
FOREWORD . 5
0 Introduction. 7
0.1 Scope of this blank detail specification . 7
0.2 Function of this blank detail specification . 7
0.3 Identification of the detail specification and the resistor. 8
1 Scope . 10
2 Normative references . 10
3 Terms and definitions. 11
4 Characteristics and ratings . 11
4.1 General . 11
4.2 Dimensions . 11
4.3 Ratings . 12
4.4 Resistance range and tolerance on resistance . 14
5 Tests and test severities . 14
5.1 Insulation resistance . 15
5.2 Voltage proof . 15
5.3 Variation of resistance with temperature . 15
5.4 Short time overload . 15
5.5 Temperature rise . 16
5.6 Solderability . 16
5.7 Resistance to soldering heat . 16
5.8 Rapid change of temperature . 16
5.9 Climatic sequence . 17
5.9.1 General . 17
5.9.2 Climatic sequence, dry heat . 17
5.9.3 Climatic sequence, cold . 17
5.9.4 Climatic sequence, low air pressure . 17
5.9.5 Climatic sequence, damp heat, cyclic . 18
5.9.6 Climatic sequence, DC load . 18
5.9.7 Climatic sequence, final measurements . 18
5.10 Damp heat, steady state test . 18
5.11 Endurance at 70 °C . 19
5.12 Endurance at upper category temperature . 19
5.13 Component solvent resistance test . 19
5.14 Solvent resistance of marking test . 19
5.15 Shear test . 19
5.16 Substrate bending test . 20
5.17 Flammability . 20
5.18 Electrostatic discharge (ESD) test . 20
6 Performance requirements . 22
6.1 Limits for change of resistance at tests . 22
6.2 Insulation resistance . 22
6.3 Variation of resistance with temperature . 23
6.4 Temperature rise . 23

6.5 Solderability . 23
6.6 Flammability . 23
7 Marking, packaging and ordering information . 24
7.1 Marking of the component . 24
7.2 Packaging . 24
7.3 Marking of the packaging . 24
7.4 Ordering information . 24
8 Additional information . 25
8.1 General . 25
8.2 Storage and transportation . 25
8.3 Substrate for assembly . 25
8.4 Soldering process . 25
8.5 Use of cleaning agents or solvents . 26
8.6 Coating or potting after assembly . 26
9 Quality assessment procedures . 26
9.1 General . 26
9.1.1 100 % test . 26
9.1.2 Certificate of conformity (CoC) . 27
9.1.3 Certified test records of released lots . 27
9.2 Qualification approval . 27
9.3 Maintenance of a qualification approval . 27
9.3.1 Quality conformance inspection . 27
9.3.2 Non-conforming specimen . 27
Annex A (normative) 0 Ω resistors (jumper) . 37
A.1 General . 37
A.2 Characteristics and ratings . 37
A.3 Tests and test severities . 37
A.4 Performance requirements . 38
A.5 Marking, packaging and ordering information . 38
A.6 Additional information . 38
A.7 Quality assessment procedures . 38
A.7.1 Test schedule for qualification approval . 38
A.7.2 Test schedule for quality conformance inspection . 38
Annex B (informative) Letter symbols and abbreviations . 40
B.1 Letter symbols . 40
B.2 Abbreviations . 41
Annex X (informative) Cross-reference for references to the prior revision of this
specification . 42
Bibliography . 43

Figure 1 – Outline and dimensions . 11
Figure 2 – Derating curve . 13

Table 1 – Styles and dimensions . 12
Table 2 – Climatic categories . 12
Table 3 – Ratings . 13

– 4 – IEC 60115-8-1:2014 © IEC 2014

Table 4 – Temperature coefficients, tolerances and resistance ranges for climatic
category . / . / . . 14
Table 5 – Short time overload duration . 16
Table 6 – Remaining cycles of damp heat, cyclic test . 18
Table 7 – Damp heat steady state test duration . 18
Table 8 – Shear test force . 20
Table 9 – ESD test voltages . 21
Table 10 –Limits for change of resistance . 22
Table 11 – Temperature coefficients and permissible change of resistance . 23
Table 12 – Test schedule for qualification approval . 28
Table 13 – Test schedule for quality conformance inspection . 32
Table A.1 – Ratings for 0 Ω resistors . 37

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 8-1: Blank detail specification:
Fixed surface mount (SMD) low power film resistors
for general electronic equipment, classification level G

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 Publications
transparently to the maximum extent possible in their 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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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 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 drawn 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 be held responsible for identifying any or all such patent rights.
International Standard IEC 60115-8-1 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 constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– It includes minor revisions related to tables, figures and references.

– 6 – IEC 60115-8-1:2014 © IEC 2014

– Dedication to resistors of product classification level G, which is for general electronic
equipment, typically operated under benign or moderate environmental conditions, like e.g.
consumer products, or telecommunication user terminals.
– Implementation of the zero defect policy with the application of the single assessment level
EZ in all test schedules.
– Substitution of the temperature coefficient of resistance (TCR), specified over the full
defined temperature range, for the inferior and less significant temperature characteristic.
– Adition of a test for the immunity against electrostatic discharge.
– Implementation of the concept of stability classes with coordinated requirements to the
performance at all prescribed tests.
– Addition of information relevant for the component user in his assembly process.
– Addition of an Annex providing special provisions for 0 Ω resistors (jumpers), which may be
part of a range of products covered by a detail specification derived from this blank detail
specification.
The text of this standard is based on the following documents:
FDIS Report on voting
40/2297/FDIS 40/2313B/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until the
stability 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.
FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 8-1: Blank detail specification:
Fixed surface mount (SMD) low power film resistors
for general electronic equipment, classification level G

0 Introduction
COMMENT This introduction is not intended to be copied into the drafted detail specification. Therefore it is
positioned prior to the conventional document structure and clause numbering range. It nevertheless contains
normative requirements to the drafted detail specification.
0.1 Scope of this blank detail specification
This part of IEC 60115-8 is applicable to the drafting of detail specifications for fixed surface
mount (SMD) low-power film resistors in rectangular chip shape (styles RR) or in cylindrical
MELF shape (styles RC) classified to level G, which is defined in IEC 60115-8:2009, 1.5 for
general electronic equipment, typically operated under benign or moderate environmental
conditions, where the major requirement is function. Examples for level G include consumer
products and telecommunication user terminals.
Another part of IEC 60115-8 provides a separate blank detail specification for the drafting of
detail specifications for fixed surface mount (SMD) low-power film resistors in rectangular chip
shape (styles RR) or in cylindrical MELF shape (styles RC) classified to level P.
Other parts of IEC 60115-8 may be issued to provide blank detail specifications for the drafting
of detail specifications for surface mount resistors of other geometrical shapes, of other
technologies or of other classification levels.
0.2 Function of this blank detail specification
A blank detail specification is a supplementary document to the sectional specification and
contains requirements for style, layout and minimum contents of detail specifications. Detail
specifications not complying with these requirements shall not be considered as being in
accordance with IEC specifications nor shall they so be described.
The detail specification should contain a table of contents before the first page of the actual
specification.
In the preparation of the detail specification, the content of IEC 60118-8:2009, 1.4 shall be
taken into account. The detail specification should be written by using the preferred values
given in IEC 60115-8.
Units, graphical symbols and letter symbols should, whenever possible, be taken from those
prescribed by the following standards:
– IEC 60027-1, Letter symbols to be used in electrical technology – Part 1: General
– IEC 60617, Graphical symbols for diagrams
– ISO 80000 (all parts), Quantities and units
This blank detail specification uses for its purpose two different indications:
– NOTE For notes which give additional information intended to assist the
understanding or use of the resulting document and therefore they shall be

– 8 – IEC 60115-8-1:2014 © IEC 2014

copied as NOTE into the drafted detail specification. As outlined in the
ISO/IEC directives, these notes shall not contain requirements, instructions,
recommendations or permissions.
– COMMENT For editorial notes which are intended to aid and direct the specification
writer, and therefore they shall not be copied into the drafted detail
specification. In order to achieve their function, editorial notes require the use
of instructions, recommendations and permissions.
0.3 Identification of the detail specification and the resistor
The first page of the detail specification should have a layout starting with a title block as
recommended on the following page.
The numbers in square brackets are editorial references, which are not intended to be copied
into the drafted detail specification. They correspond to the following information on the
contents which shall be inserted in the indicated positions.
[1] "International Electrotechnical Commission" or the name of the standardisation
organisation under whose authority the detail specification is published and, if applicable,
the organization from whom the detail specification is available.
[2] The number allocated to the detail specification by the IEC or by the responsible
standardisation organisation, together with the date of issue and issue number, as
applicable.
Further reference details required by the responsible standardisation organisation or
quality assessment system may be given here, including an established mark of conformity,
as applicable.
[3] The number and issue date and number, as applicable, of the relevant generic
specification, sectional specification and blank detail specification, where the referenced
issues shall be the most recent issues of the respective specifications.
[4] The title of the detail specification, providing a short description of the type of resistors.
This entry should support the discrimination between similar specifications and should be
suitable for an entry in a register of approvals or in a catalogue of standards. It may
duplicate information given in the textual scope in Clause 1.
[5] An outline drawing or illustration of the products. This entry should aid the easy recognition
of the resistors and, if possible, support the discrimination between similar specifications.
It may duplicate information given in Figure 1.
[6] Information on the typical construction of the resistors (where applicable). This entry may
duplicate information given in the textual scope in Clause 1.
[7] The classification level of the resistors covered by this detail specification, the level of
quality assessment (assessment level EZ), and the general level of stability requirements
at performance tests (stability class). This information may duplicate information given in
the textual scope in Clause 1.
[8] Optional field for table notes.

Specification available from: IEC 60115-8-1 .: ….
[1] [2]
Electronic components of assessed quality Fixed low-power film surface mount
in accordance with: (SMD) resistors for general
IEC 60115-1: …. [3] electronic equipment, classification
IEC 60115-8: …. level G… [4]
IEC 60115-8-1: ….
[5] [6]
Product classification level G

Assessment level EZ [7]
Stability classes .
[8]
COMMENT The remainder of this page is intentionally left empty in order to start Clause 1 on top of the next page.

Information about components qualified to this detail specification is available in the approvals
section of the website http://www.iecq.org.

– 10 – IEC 60115-8-1:2014 © IEC 2014

1 Scope
COMMENT The text of this clause may repeat information already given in some fields of the above title block.
This detail specification specifies the characteristics and ratings of fixed surface mount (SMD)
resistors.
...
The resistors covered herein are classified to level G, as defined in IEC 60115-8: …. , 1.5 for
general electronic equipment, typically operated under benign or moderate environmental
conditions, where the major requirement is function. Examples for level G include consumer
products and telecommunication user terminals.
This detail specification establishes test schedules and performance requirements for the
quality assessment of the resistors covered herein according to the quality assessment
procedures prescribed in IEC 60115-1: . , Annex Q.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
IEC 60062:2004, Marking codes for resistors and capacitors
IEC 60063, Preferred number series for resistors and capacitors
IEC 60068-2-1, Environmental testing – Part 2-1: Tests – Test A: Cold
IEC 60068-2-2, Environmental testing– Part 2-2: Tests – Tests B: Dry heat
IEC 60115-1:2008, Fixed resistors for use in electronic equipment – Part 1: Generic
specification
IEC 60115-8:2009, Fixed resistors for use in electronic equipment – Part 8: Sectional
specification – Fixed surface mount resistors
IEC 60286-3, Packaging of components for automatic handling – Part 3: Packaging of surface
mount components on continuous tapes
IEC 60286-6, Packaging of components for automatic handling – Part 6: Bulk case packaging
for surface mounting components
IEC 61760-1, Surface mounting technology – Part 1: Standard method for the specification of
surface mounting components (SMDs)
IEC 61193-2:2007, Quality assessment systems – Part 2: Selection and use of sampling
plans for inspection of electronic components and packages

COMMENT 1 The above list of normative references provides an example and needs to be adapted to the actual
requirements of the drafted detail specification.
COMMENT 2 Dated references are required when reference is made to a specific part of the referenced standard,
and generally they should be applied only in such cases.
COMMENT 3 It is recommended to update any dated references to the most recent revision of the referenced
standard when drafting a detail specification. This involves updating of the dated normative references within the
text of the drafted detail specification.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60115-1 and in
IEC 60115-8, as well as the following, apply.
…
COMMENT The above statement should be reduced to “For the purposes of this document, the terms and
definitions given in IEC 60115-1 and in IEC 60115-8 apply.” if no further terms or definitions are required in the
drafted detail specification.
4 Characteristics and ratings
4.1 General
Various parameters of this component are precisely defined in this specification. Unspecified
parameters may vary from one component to another.
4.2 Dimensions
The shape and dimensions of the resistors covered by this specification are shown in Figure 1,
with the specific styles and their respective dimensions given in Table 1. Other shapes are
permissible within the given dimensions.
IEC
Figure 1 – Outline and dimensions
COMMENT 1 See IEC 60115-8:2009, 1.4.1.

– 12 – IEC 60115-8-1:2014 © IEC 2014

COMMENT 2 The details shown in Figure 1 may repeat information already given in some fields of the title block
above. Figure 1 in particular needs to define all dimensions to be prescribed in Table 1.
Table 1 – Styles and dimensions
b
Style Dimensions Mass
L W T m
a
Metric X
mm mm mm mg
a
Historical style code, for information only.
b
For information only.
COMMENT 3 See IEC 60115-8:2009, 1.4.2.
COMMENT 4 The metric style designation is the normative designation used in all other places throughout this
detail specification. Column X is an optional column for additional style information, e.g. for traditional imperial chip
dimensions, which generally need to be marked with a respective table footnote, e.g. as “Historical style code, for
information only”.
COMMENT 5 The dimensions for length L, width W and height H are given as example based on the requirements
for rectangular chip resistors only and need to correspond to the dimensions identified in Figure 1. The choice of
prescribed dimensions needs to be adapted to the actual requirements of the drafted detail specification and the
shape of products covered therein. The dimensions may be given in the format of nominal values plus tolerance, or
by stating permissible minimum and maximum values. Columns for additional dimensions may be inserted as
required.
COMMENT 6 The component mass is not intended to be verified by an inspection procedure. It should be given as
the maximum mass of a single component and should be marked with a respective table footnote as “For
information only”.
4.3 Ratings
The climatic categories applied in this detail specification are given in Table 2.
Table 2 – Climatic categories
Climatic category
LCT / UCT / duration
... / ... / ...
... / ... / ...
COMMENT 1 See IEC 60115-8:2009, 1.4.3.
The upper category temperature (UCT), which is used for test procedures, should be based on
the maximum element temperature (MET).

Table 3 – Ratings
Rated Limiting element voltage Insulation voltage
Style X
dissipation d.c. or a.c. (r.m.s) d.c. or a.c. (peak)

P U U
70 max ins
mW V V
NOTE The insulation voltage U is verified with a test duration of one minute. However, long time insulation
ins
properties may be affected by the influence of moisture, organic material and electrical field across the insulating
layer(s).
COMMENT 2 See IEC 60115-8:2009, 1.4.8, 1.4.9 and 1.4.10.
COMMENT 3 Column X is an optional column for additional information, e.g. an additional rated dissipation at
another ambient temperature than the rated temperature 70 °C.
COMMENT 4 The insulation voltage shall not be specified lower than the peak voltage that can be applied
continuously to the resistors and therefore shall not be rated less than U = 1,42 · U .
ins max
COMMENT 5 Different sets of ratings may be assigned to variations of another parameter, e.g. climatic categories
or stability classes. Then such different sets of ratings should be given in separate tables which need to be clearly
assigned to the relevant parameter(s). Such duplicate tables may be titled e.g. as Table 3a, Table 3b, etc. as
required.
The permissible dissipation of resistors covered by this detail specification is the rated
dissipation as given in Table 3, which is derated for an ambient temperature above the rated
temperature 70 °C according to the diagram in Figure 2.
P
100 %
LCT 70 °C UCT
Ambient temperature  T
amb
IEC
Figure 2 – Derating curve
COMMENT 6 See IEC 60115-8:2009, 1.4.8.
COMMENT 7 The scale of derated dissipation may be given as absolute value in watt or relative in percent as a
fraction of the rated dissipation P .
Fraction of the rated dissipation  P
– 14 – IEC 60115-8-1:2014 © IEC 2014

COMMENT 8 A larger area of operation or permissible temperature rise may be given by the detail specification,
provided it includes all the area given in Figure 2.
4.4 Resistance range and tolerance on resistance
Table 4 gives the combinations of temperature coefficient, tolerance on resistance and
resistance range which may be approved in climatic category . / . / . according to this detail
specification.
COMMENT 1 The above paragraph needs to be adapted to the actual requirements if more than one climatic
category is applied in the drafted detail specification, see also COMMENT 5 below.
Products from the extent given in Table 4 shall be used for the initial product qualification
approval according to 9.2, and for the quality conformance inspection according to 9.3.1.
The qualification of resistances below or above the specified resistance ranges is permissible if
they fulfil the requirements of the stability class prescribed for the closest resistance within a
-6
specified range; e.g. resistors of style . , . ⋅ 10 /K, . %, . Ω shall fulfil the requirements of
stability class . .
COMMENT 2 The above paragraph may be deleted if individual extensions of the approvable resistance ranges is
not considered suitable for the scope of the drafted detail specification.
The range of resistors approved in each style, together with the associated temperature
coefficient and tolerance, shall be given in the register of approvals, as available for example
on the website http://www.iecq.org.
Table 4 – Temperature coefficients, tolerances and resistance ranges
for climatic category . / . / .
Temperature Stability
b
Style Tolerance Resistance range E series
coefficient class
-6 a a
10 /K Code % Code Ω
a
Code letters according to IEC 60062.
b
Resistance values of the given E series according to IEC 60063 are . .
COMMENT 3 See IEC 60115-8:2009, 1.4.5.
COMMENT 4 The column for the prescription of an E series is optional and may be deleted together with its
related table footnote if the explicit recommendation of or limitation to resistance values of a particular E series is
not suitable for the drafted detail specification. If used, the respective footnote to table needs to describe the
recommendation or limitation associated with the given E series.
COMMENT 5 Different sets of resistance ranges may be assigned to different climatic categories, which should be
given in separate tables, which then need to be clearly assigned to the respective climatic category. Such duplicate
tables may be titled as Table 4a, Table 4b, etc., as required.
5 Tests and test severities
COMMENT 1 This clause is used to prescribe the severities of all tests demanded by the generic or sectional
specification, which have not been prescribed in these superior specifications.
In addition, this clause should be used to prescribe in dedicated subclauses any additional test(s) not specified in
the generic and/or sectional specification, and/or additional or increased test severities to those specified in the
generic and/or sectional specification, wherever applicable to the scope of the drafted detail specification.

COMMENT 2 Owing to the space limitations in Tables 12 and 13, and to the need for unambiguous and consistent
rulings, the prescriptions in this clause need to contain the full relevant information for each prescribed test.
Consequentially, the “Conditions of test” in Tables 12 and 13 will only quote as much of the prescriptions as is
required to provide a suitable overview.
5.1 Insulation resistance
See IEC 60115-1:2008, 4.6 and IEC 60115-8:2009, 2.2.5, with the following details:
Rectangular chip resistors, styles RR, shall be measured in a test jig as prescribed in
IEC 60115-1:2008, 4.6.1.4, with the side of the resistive element (film side) facing up towards
the spring loaded electrode (test point A). The radius of the spring loaded electrode shall not
exceed one fourth of the length L of the chip resistor.
Cylindrical MELF resistors, styles RC, shall be measured in a test jig as prescribed in
IEC 60115-1:2008, 4.6.1.5. Dimension L of the V-shaped, spring loaded test block (test point
A) shall be chosen to maintain a minimum distance to the resistor terminations of 0,5 mm or
one fourth of the isolated length between the resistor’s terminations , whichever is smaller.
COMMENT A specification will only cover either rectangular chip resistors or cylindrical MELF resistors, hence
only the relevant paragraph should be used in the drafted detail specification.
5.2 Voltage proof
See IEC 60115-1:2008, 4.7 and IEC 60115-8:2009, 2.2.6, with the following details:
Re
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