IEC 60115-2-10:2023

IEC 60115-2-10
®

Edition 1.0 2023-02
INTERNATIONAL
STANDARD
Fixed resistors for use in electronic equipment –
Part 2-10: Blank detail specification: Low-power film resistors with leads for
through-hole assembly on circuit boards (THT), for general electronic
equipment, classification level G
IEC 60115-2-10:2023-02(en)

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IEC 60115-2-10
®

Edition 1.0 2023-02
INTERNATIONAL
STANDARD
Fixed resistors for use in electronic equipment –
Part 2-10: Blank detail specification: Low-power film resistors with leads for
through-hole assembly on circuit boards (THT), for general electronic
equipment, classification level G
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.040.10 ISBN 978-2-8322-6465-2
 Warning! Make sure that you obtained this publication from an authorized distributor.
® Registered trademark of the International Electrotechnical Commission

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– 2 – IEC 60115-2-10:2023 © IEC 2023
CONTENTS
FOREWORD . 5
0 Introduction to the template provided by this blank detail specification. 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 . 14
4.4 Resistance range and tolerance on resistance . 15
5 Tests and test severities . 16
5.1 General . 16
5.2 Resistance . 16
5.3 Temperature coefficient of resistance . 17
5.4 Temperature rise . 17
5.5 Endurance at the rated temperature 70 °C . 17
5.6 Endurance at a maximum temperature: UCT . 17
5.7 Short-term overload . 17
5.8 Electrostatic discharge (ESD) test . 18
5.9 Visual examination . 18
5.10 Gauging of dimensions . 18
5.11 Detail dimensions . 18
5.12 Robustness of terminations . 19
5.13 Vibration . 19
5.14 Rapid change of temperature . 19
5.15 Climatic sequence. 19
5.16 Damp heat, steady state . 19
5.17 Solderability, with lead-free solder . 20
5.18 Solderability, with SnPb solder . 20
5.19 Resistance to soldering heat . 20
5.20 Solvent resistance . 21
5.21 Insulation resistance . 21
5.22 Voltage proof . 21
5.23 Flammability . 21
6 Performance requirements. 21
6.1 General . 21
6.2 Limits for change of resistance at tests . 22
6.3 Temperature coefficient of resistance . 22
6.4 Temperature rise . 23
6.5 Visual examination . 23
6.5.1 General visual criteria . 23
6.5.2 Visual criteria after tests . 24
6.5.3 Visual criteria for packaging . 24

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IEC 60115-2-10:2023 © IEC 2023 – 3 –
6.6 Solderability . 24
6.7 Insulation resistance . 24
6.8 Flammability . 25
7 Marking, packaging and ordering information . 25
7.1 Marking of the component . 25
7.2 Packaging . 25
7.3 Marking of the packaging . 25
7.4 Ordering information . 25
8 Additional information . 26
8.1 General . 26
8.2 Storage and transportation . 26
8.3 Substrate for assembly . 26
8.4 Soldering process . 26
8.5 Use of cleaning agents or solvents . 26
8.6 Coating or potting after assembly . 27
9 Quality assessment procedures . 27
9.1 General . 27
9.1.1 100 % test . 27
9.1.2 Certificate of conformity (CoC) . 27
9.1.3 Certified test records of released lots . 28
9.2 Qualification approval . 28
9.3 Maintenance of a qualification approval . 28
9.3.1 Quality conformance inspection . 28
9.3.2 Non-conforming specimen . 28
Annex A (normative) Symbols and abbreviated terms . 37
A.1 Symbols . 37
A.2 Abbreviated terms . 39
Annex B (normative) Reference for visual examination . 40
Annex C (normative) Zero Ohm resistors (jumpers). 41
C.1 General . 41
C.2 Characteristics and ratings . 41
C.3 Tests and test severities . 42
C.4 Performance requirements . 42
C.5 Marking, packaging and ordering information . 42
C.6 Additional information . 42
C.7 Quality assessment procedures . 42
C.7.1 Test schedule for qualification approval . 42
C.7.2 Test schedule for quality conformance inspection . 43
Annex X (informative) Cross-references to the prior revision of this specification . 44
Bibliography . 45


Figure 1 – Outline and dimensions . 12
Figure 2 – Lead eccentricity of the wire terminations . 13
Figure 3 – Length of excessive coating on the wire terminations . 13
Figure 4 – Derating curve . 15

Table 1 – Styles and dimensions. 12

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– 4 – IEC 60115-2-10:2023 © IEC 2023
Table 2 – Climatic categories . 14
Table 3 – Ratings. 14
Table 4 – Temperature coefficients, tolerances and resistance ranges for climatic
category . / . / . . 16
Table 5 – Short-term overload duration . 18
Table 6 – ESD test voltages . 18
Table 7 – Additional cycles of the damp heat, cyclic test . 19
Table 8 – Damp heat, steady state test duration . 20
Table 9 – Limits for change of resistance at tests . 22
Table 10 – Permitted change of resistance due to the variation of temperature . 23
Table 11 – Test schedule for the qualification approval . 29
Table 12 – Test schedule for quality conformance inspection . 33
Table C.1 – Climatic category . 41
Table C.2 – Ratings for 0 Ω resistors . 41
Table X.1 – Cross-references to clauses of the prior edition . 44

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IEC 60115-2-10:2023 © IEC 2023 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 2-10: Blank detail specification: Low-power film resistors with leads
for through-hole assembly on circuit boards (THT), 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.
IEC 60115‑2‑10 has been prepared by IEC technical committee 40: Capacitors and resistors
for electronic equipment. It is an International Standard.
This first edition cancels and replaces IEC 60115-2-1:1982. This edition constitutes a technical
revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) it employs the product classification based on application requirements as defined in the
generic specification IEC 60115‑1:2020;
b) it permits the specification of additional dimensional requirements concerning the
eccentricity of termination wires and the coating extending onto wires;
c) it provides for a tabulated presentation of resistance ranges in relationship to the
temperature coefficient and the tolerance;

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– 6 – IEC 60115-2-10:2023 © IEC 2023
d) it supports solderability testing for both traditional lead-bearing soldering and up-to-date
lead-free soldering, as required;
e) it introduces a test for the specimens’ robustness to electrostatic discharge;
f) it introduces a test for the specimens’ resistance to solvents;
g) it introduces a test for the flammability of the specimens;
h) it employs consistent stability requirements grouped in stability classes;
i) it supports the provision of detailed visual acceptance criteria;
j) it includes the requirement for a visual examination of the primary and proximity packaging;
k) it provides the correlated test schedules for a qualification approval and for subsequent
quality conformance inspections side by side;
l) it employs quality assessment procedures which meet the requirements of a zero-defect
approach, which evades the use of historic AQL levels and the permission of non-conforming
specimens in test groups;
m) it provides for the inclusion of specific visual acceptance criteria, to be applied in addition
to those given in Annex B of the sectional specification IEC 60115-2:2023;
n) it provides for the optional coverage of 0 Ω resistors (jumpers) within the scope of the drafted
detail specification;
o) furthermore, it employs a new document structure, for which a transition guidance is
provided in Annex X.
The text of this International Standard is based on the following documents:
Draft Report on voting
40/2944/CDV 40/3002/RVC

Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
A list of all parts in the IEC 60115 series, published under the general title Fixed resistors for
use in electronic equipment, can be found on the IEC website.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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IEC 60115-2-10:2023 © IEC 2023 – 7 –
0 Introduction to the template provided by this blank detail specification
COMMENT This introduction is not intended to be copied into the drafted detail specification. Therefore, it is
positioned in front of 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 60115‑2 is applicable to the drafting of detail specifications for low-power film
resistors with leads, classified to level G, based on the definition of the product classification
levels in IEC 60115‑1:2020, 3.4.
Another part of IEC 60115‑2 provides a separate blank detail specification for the drafting of
detail specifications for low-power film resistors with leads, classified to level P and to level R.
Yet other parts of IEC 60115‑2 may be issued to provide blank detail specifications for the
drafting of detail specifications for low-power film resistors with leads, 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 accepted as being in
accordance with IEC specifications nor shall they be described as such.
Detail specifications complying with the requirements of this blank detail specification are a
legitimate basis for the quality assessment of leaded fixed low-power film resistors under an
adequate quality assessment system, e.g. the IEC Quality Assessment System for Electronic
Components (IECQ System), whereas the plain blank detail specification is not a suitable basis.
The detail specification should contain a table of contents prior the first page of the actual
specification.
In the preparation of the detail specification, the content of IEC 60115-2:2023, 8.2 shall be
taken into account. The detail specification should be written by using the preferred values
given in IEC 60115‑2.
Units, graphical symbols and letter symbols shall, whenever possible, be taken from those
specified in the following standards:
– IEC 60027-1, Letter symbols to be used in electrical technology – Part 1: General
– IEC 60617, Graphical symbols for diagrams
– IEC 80000 (all parts), Quantities and units
– ISO 80000 (all parts), Quantities and units
This blank detail specification uses for its purpose two different kinds of notes:
– NOTE For notes which give additional information intended to assist the
understanding or use of the resulting document and therefore shall be copied
as NOTE into the drafted detail specification. As outlined in the ISO/IEC
directives, these notes shall not contain any requirement, instruction,
recommendation or permission.
– COMMENT For editorial notes which are intended to aid and direct the specification
writer and therefore shall not be copied into the drafted detail specification.
In order to accomplish their function, editorial notes require the use of
instructions, recommendations and permissions addressed to the writer of
the detail specification.

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– 8 – IEC 60115-2-10:2023 © IEC 2023
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, and which correspond to the following information on the
contents which shall be inserted in the indicated fields.
[1] 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 fields [6] and [7] and 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 specified 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), information of the
specified resistors being insulated or non-insulated (see IEC 60115-1:2020, 3.1.7), and
information on compatibility with a specific soldering process (if applicable, see 8.4). 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.
[9] Statement(s) about the availability of information on components qualified to this detail
specification, if applied within a full quality assessment system.
Example for the use within the IECQ system:
Information about components qualified to this detail specification is available in the
approvals section of the website http://www.iecq.org.

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IEC 60115-2-10:2023 ©
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