oSIST prEN IEC 60115-8-10:2026
(Main)Fixed resistors for use in electronic equipment - Part 8-10: Blank detail specification: Surface mount (SMD) low-power film resistors for assembly on circuit boards, for general electronic equipment, classification level G
Fixed resistors for use in electronic equipment - Part 8-10: Blank detail specification: Surface mount (SMD) low-power film resistors for assembly on circuit boards, for general electronic equipment, classification level G
Résistances fixes utilisées dans les équipements électroniques - Partie 8-10: Spécification particulière-cadre: Résistances à couche, à faible dissipation, pour montage en surface (CMS) pour assemblage sur cartes de circuit imprimé pour des équipements électroniques généraux, niveau de classification G
Fiksni upori za uporabo v elektronski opremi - 8-10. del: Neizpolnjena podrobna specifikacija - Površinsko montirani (SMD) tankoplastni upori nizke moči za montažo na tiskana vezja, za univerzalno elektronsko opremo, razvrstitvena raven G
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2026
Fiksni upori za uporabo v elektronski opremi - 8-10. del: Neizpolnjena podrobna
specifikacija - Površinsko montirani (SMD) tankoplastni upori nizke moči za
montažo na tiskana vezja, za univerzalno elektronsko opremo, razvrstitvena raven
G
Fixed resistors for use in electronic equipment - Part 8-10: Blank detail specification:
Surface mount (SMD) low-power film resistors for assembly on circuit boards, for general
electronic equipment, classification level G
Résistances fixes utilisées dans les équipements électroniques - Partie 8-10:
Spécification particulière-cadre: Résistances à couche, à faible dissipation, pour
montage en surface (CMS) pour assemblage sur cartes de circuit imprimé pour des
équipements électroniques généraux, niveau de classification G
Ta slovenski standard je istoveten z: prEN IEC 60115-8-10:2025
ICS:
31.040.10 Fiksni upor Fixed resistors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
40/3264/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60115-8-10 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-12-05 2026-02-27
SUPERSEDES DOCUMENTS:
40/3215/CD, 40/3246/CC
IEC TC 40 : CAPACITORS AND RESISTORS FOR ELECTRONIC EQUIPMENT
SECRETARIAT: SECRETARY:
Netherlands Mr Ronald Drenthen
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is
the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).
TITLE:
Fixed resistors for use in electronic equipment - Part 8-10: Blank detail specification: Surface
mount (SMD) low-power film resistors for assembly on circuit boards, for general electronic
equipment, classification level G
PROPOSED STABILITY DATE: 2032
NOTE FROM TC/SC OFFICERS:
download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National
Committee positions. You may not copy or "mirror" the file or printed version of the document, o r any part of it,
for any other purpose without permission in writing from IEC.
IEC CDV 60115-8-10 © IEC 2025
1 CONTENTS
3 FOREWORD . 4
4 1 Scope . 9
5 2 Normative references . 9
6 3 Terms and definitions . 10
7 4 Characteristics and ratings . 10
8 4.1 General . 10
9 4.2 Dimensions . 10
10 4.3 Ratings . 12
11 4.4 Resistance range and tolerance on resistance . 13
12 5 Tests and test severities . 14
13 5.1 General . 14
14 5.2 Resistance . 14
15 5.3 Temperature coefficient of resistance . 15
16 5.4 Temperature rise . 15
17 5.5 Endurance at the rated temperature 70 °C . 15
18 5.6 Endurance at a maximum temperature: UCT . 15
19 5.7 Short-term overload . 15
20 5.8 Electrostatic discharge (ESD) test . 16
21 5.9 Visual examination . 16
22 5.10 Gauging of dimensions . 16
23 5.11 Detail dimensions . 16
24 5.12 Shear (adhesion) test . 16
25 5.13 Substrate bending test . 17
26 5.14 Rapid change of temperature . 17
27 5.15 Climatic sequence. 17
28 5.16 Damp heat, steady state . 17
29 5.17 Solderability, with lead-free solder . 18
30 5.18 Solderability, with SnPb solder . 18
31 5.19 Resistance to soldering heat . 19
32 5.20 Solvent resistance . 19
33 5.21 Insulation resistance . 19
34 5.22 Voltage proof . 19
35 5.23 Flammability . 19
36 6 Performance requirements. 19
37 6.1 General . 19
38 6.2 Limits for change of resistance at tests . 20
39 6.3 Temperature coefficient of resistance . 20
40 6.4 Temperature rise . 21
41 6.5 Visual examination . 21
42 6.6 Solderability . 22
43 6.7 Insulation resistance . 22
44 6.8 Flammability . 23
45 7 Marking, packaging and ordering information . 23
IEC CDV 60115-8-10 © IEC 2025
46 7.1 Marking of the component . 23
47 7.2 Packaging . 23
48 7.3 Marking of the packaging . 23
49 7.4 Ordering information . 23
50 8 Additional information . 24
51 8.1 General . 24
52 8.2 Storage and transportation . 24
53 8.3 Substrate for assembly . 24
54 8.4 Soldering process . 24
55 8.5 Use of cleaning agents or solvents . 25
56 8.6 Coating or potting after assembly . 25
57 9 Quality assessment procedures . 25
58 9.1 General . 25
59 9.2 Qualification approval . 26
60 9.3 Maintenance of a qualification approval . 26
61 Annex A (normative) Symbols and abbreviated terms . 37
62 A.1 Symbols . 37
63 A.2 Abbreviated terms . 39
64 Annex B (normative) Reference for visual examination . 40
65 Annex C (normative) 0 Ω resistors (jumpers). 41
66 C.1 General . 41
67 C.2 Characteristics and ratings . 41
68 C.3 Tests and test severities . 42
69 C.4 Performance requirements . 42
70 C.5 Marking, packaging and ordering information . 42
71 C.6 Additional information . 42
72 C.7 Quality assessment procedures . 42
73 Annex X (informative) Cross-references to the prior revision of this specification . 44
74 Bibliography . 46
76 Figure 1 – Outline and dimensions . 11
77 Figure 2 – Derating curve . 13
80 Table 1 – Styles and dimensions. 11
81 Table 2 – Climatic categories . 12
82 Table 3 – Ratings. 12
83 Table 4 – Temperature coefficients, tolerances and resistance ranges for climatic
84 category . / . / . . 14
85 Table 5 – Short-term overload duration . 15
86 Table 6 – ESD test voltages . 16
87 Table 7 – Shear test force . 17
88 Table 8 – Additional cycles of the damp heat, cyclic test . 17
89 Table 9 – Damp heat, steady state test duration . 18
90 Table 10 – Limits for change of resistance at tests . 20
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91 Table 11 – Permitted change of resistance due to the variation of temperature . 21
92 Table 12 – Test schedule for the qualification approval . 28
93 Table 13 – Test schedule for quality conformance inspection . 32
94 Table C.1 – Climatic category . 41
95 Table C.2 – Ratings for 0 Ω resistors . 41
96 Table X.1 – Cross-references to clauses of the prior edition . 44
97 Table X.2 – Cross-references to figures of the prior edition . 45
98 Table X.3 – Cross-references to tables of the prior edition . 45
IEC CDV 60115-8-10 © IEC 2025
101 INTERNATIONAL ELECTROTECHNICAL COMMISSION
102 ____________
104 FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT –
106 Part 8-10: Blank detail specification: Surface mount (SMD) low-power film
107 resistors for assembly on circuit boards,
108 for general electronic equipment, classification level G
110 FOREWORD
111 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
112 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
113 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
114 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
115 Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
116 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
117 may participate in this preparatory work. International, governmental and non-governmental organizations liaising
118 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
119 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
120 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
121 consensus of opinion on the relevant subjects since each technical committee has representation from all
122 interested IEC National Committees.
123 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
124 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
125 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
126 misinterpretation by any end user.
127 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
128 transparently to the maximum extent possible in their national and regional publications. Any divergence between
129 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
130 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
131 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
132 services carried out by independent certification bodies.
133 6) All users should ensure that they have the latest edition of this publication.
134 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
135 members of its technical committees and IEC National Committees for any personal injury, property damage or
136 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
137 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
138 Publications.
139 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
140 indispensable for the correct application of this publication.
141 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
142 rights. IEC shall not be held responsible for identifying any or all such patent rights.
143 IEC 60115‑8‑10 has been prepared by IEC technical committee 40: Capacitors and resistors
144 for electronic equipment. It is an International Standard.
145 This first edition cancels and replaces IEC 60115-8-1:2014. This edition constitutes a technical
146 revision.
147 This edition includes the following significant technical changes with respect to the previous
148 edition:
149 a) it supports solderability testing for both traditional lead-bearing soldering and up-to-date
150 lead-free soldering, as required;
151 b) it supports the provision of detailed visual acceptance criteria;
152 c) it includes the requirement for a visual examination of the primary and proximity packaging;
IEC CDV 60115-8-10 © IEC 2025
153 d) it provides for the inclusion of specific visual acceptance criteria, to be applied in addition
154 to those given in Annex B of the sectional specification IEC 60115-8:2023;
155 The text of this International Standard is based on the following documents:
Draft Report on voting
40/XX/FDIS 40/XX/RVD
157 Full information on the voting for its approval can be found in the report on voting indicated in
158 the above table.
159 The language used for the development of this International Standard is English.
160 A list of all parts in the IEC 60115 series, published under the general title Fixed resistors for
161 use in electronic equipment, can be found on the IEC website.
162 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
163 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
164 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
165 described in greater detail at www.iec.ch/publications.
166 The committee has decided that the contents of this document will remain unchanged until the
167 stability date indicated on the IEC website under webstore.iec.ch in the data related to the
168 specific document. At this date, the document will be
169 • reconfirmed,
170 • withdrawn,
171 • replaced by a revised edition, or
172 • amended.
IEC CDV 60115-8-10 © IEC 2025
175 0 Introduction to the template provided by this blank detail specification
176 COMMENT This introduction is not intended to be copied into the drafted detail specification. Therefore, it is
177 positioned in front of the conventional document structure and clause numbering range. It nevertheless contains
178 normative requirements to the drafted detail specification.
179 0.1 Scope of this blank detail specification
180 This part of IEC 60115‑8 is applicable to the drafting of detail specifications for surface mount
181 (SMD) low-power film resistors, classified to level G, based on the definition of the product
182 classification levels in IEC 60115‑1:2020, 3.4.
183 Another part of IEC 60115‑8 provides a separate blank detail specification for the drafting of
184 detail specifications for surface mount (SMD) low-power film resistors, classified to level P and
185 to level R.
186 Yet other parts of IEC 60115‑8 may be issued to provide blank detail specifications for the
187 drafting of detail specifications for surface mount (SMD) resistors, of other technologies or of
188 other classification levels.
189 0.2 Function of this blank detail specification
190 A blank detail specification is a supplementary document to the sectional specification and
191 contains requirements for style, layout and minimum contents of detail specifications. Detail
192 specifications not complying with these requirements shall not be accepted as being in
193 accordance with IEC specifications nor shall they be described as such.
194 Detail specifications complying with the requirements of this blank detail specification are a
195 legitimate basis for the quality assessment of leaded fixed low-power film resistors under an
196 adequate quality assessment system, e.g. the IEC Quality Assessment System for Electronic
197 Components (IECQ System), whereas the plain blank detail specification is not a suitable basis.
198 The detail specification should contain a table of contents prior the first page of the actual
199 specification.
200 In the preparation of the detail specification, the content of IEC 60115‑8:2023, 8.2 shall be
201 taken into account. The detail specification should be written by using the preferred values
202 given in IEC 60115‑8.
203 Units, graphical symbols and letter symbols shall, whenever possible, be taken from those
204 prescribed by the following standards:
205 – IEC 60027-1, Letter symbols to be used in electrical technology – Part 1: General
206 – IEC 60617, Graphical symbols for diagrams
207 – IEC 80000 (all parts), Quantities and units
208 – ISO 80000 (all parts), Quantities and units
209 This blank detail specification uses for its purpose two different kinds of notes:
210 – NOTE For notes which give additional information intended to assist the
211 understanding or use of the resulting document and therefore shall be copied
212 as NOTE into the drafted detail specification. As outlined in the ISO/IEC
213 directives, these notes shall not contain any requirement, instruction,
214 recommendation or permission.
215 – COMMENT For editorial notes which are intended to aid and direct the specification
216 writer and therefore shall not be copied into the drafted detail specification.
217 In order to accomplish their function, editorial notes require the use of
IEC CDV 60115-8-10 © IEC 2025
218 instructions, recommendations and permissions addressed to the writer of
219 the detail specification.
220 0.3 Identification of the detail specification and the resistor
221 The first page of the detail specification should have a layout starting with a title block as
222 recommended on the following page.
223 The numbers in square brackets are editorial references, which are not intended to be copied
224 into the drafted detail specification, and which correspond to the following information on the
225 contents which shall be inserted in the indicated fields.
226 [1] The name of the standardisation organisation under whose authority the detail specification
227 is published and, if applicable, the organization from whom the detail specification is
228 available.
229 [2] The number allocated to the detail specification by the IEC or by the responsible
230 standardisation organisation, together with the date of issue and issue number, as
231 applicable. Further reference details required by the responsible standardisation
232 organisation or quality assessment system may be given here, including an established
233 mark of conformity, as applicable.
234 [3] The number and issue date and number, as applicable, of the relevant generic specification,
235 sectional specification and blank detail specification, where the referenced issues shall be
236 the most recent issues of the respective specifications.
237 [4] The title of the detail specification, providing a short description of the type of resistors.
238 This entry should support the discrimination between similar specifications and should be
239 suitable for an entry in a register of approvals or in a catalogue of standards. It may duplicate
240 information given in fields [6] and [7] and in the textual scope in Clause 1.
241 [5] An outline drawing or illustration of the products. This entry should aid the easy recognition
242 of the specified resistors and, if possible, support the discrimination between similar
243 specifications. It may duplicate information given in Figure 1.
244 [6] Information on the typical construction of the resistors (where applicable), information of the
245 specified resistors being insulated or non-insulated (see IEC 60115-1:2020, 3.1.7), and
246 information on compatibility with a specific soldering process (if applicable, see 8.4). This
247 entry may duplicate information given in the textual scope in Clause 1.
248 [7] The classification level of the resistors covered by this detail specification, the level of
249 quality assessment (Assessment level EZ), and the general level of stability requirements
250 at performance tests (Stability class).
251 This information may duplicate information given in the textual scope in Clause 1.
252 [8] Optional field for table notes.
253 [9] Statement(s) about the availability of information on components qualified to this detail
254 specification, if applied within a full quality assessment system.
255 Example for the use within the IECQ system:
256 Information about components qualified to this detail specification is available in the
257 approvals section of the website http://www.iecq.org.
IEC CDV 60115-8-10 © IEC 2025
Specification available from: IEC 60115-8-10xx:20yy
[1] [2]
Electronic components of assessed quality in accordance with:
Generic specification: IEC 60115-1:2020 [3]
Sectional specification: IEC 60115-8:2023
Blank detail specification: IEC 60115-8-10:202X
FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT –
Part 8-10xx: Detail specification –
Surface mount (SMD) low-power film resistors for assembly on circuit boards,
…,
for general electronic equipment, classification level G,
[4]
Technology …
[6]
Insulated / Non-insulated
[5] Termination plating …
Product classification level G
Assessment level EZ [7]
Stability classes .
[8]
260 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 ….
[9]
IEC CDV 60115-8-10 © IEC 2025
265 FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT –
267 Part 8-10xx: Detail specification: Surface mount (SMD)
268 low-power film resistors for assembly on circuit boards,
269 … ,
270 for general electronic equipment, classification level G
273 COMMENT The above title without the introductory word “blank” is to become the title of the intended detail
274 specification, which is drafted on the basis of this blank detail specification.
275 The actual title of the intended detail specification should hold some wording descriptive for the particular kind of
276 components covered therein, where indicated by “…”, in order to support the differentiation between parallel detail
277 specification on the same level. An example for such descriptive wording would be: “rectangular shape, stability
278 classes 0,1; 0,25”.
279 1 Scope
280 COMMENT The text of this clause may repeat information already given in some fields of the above title block.
281 Essential information on the special type of components covered by the drafted detail specification may be added,
282 preferably at the place marked with "…".
283 This detail specification specifies the characteristics and ratings of surface mount (SMD) film
284 resistors for use in electronic equipment, which are typically assembled on the surface of circuit
285 boards.
286 .
287 The resistors covered herein are classified to level G, as defined in IEC 60115‑1:2020, 3.4 for
288 general electronic equipment, typically operated under benign or moderate environmental
289 conditions, where the major requirement is function. Examples for level G include consumer
290 products and telecommunication user terminals.
291 This detail specification is based upon the blank detail specification IEC 60115-8-10:202X.
292 This detail specification establishes test schedules and performance requirements permitting
293 the quality assessment of the resistors covered herein according to the quality assessment
294 procedures prescribed by IEC 60115-1:2020, Annex Q.
295 2 Normative references
296 The following documents are referred to in the text in such a way that some or all of their content
297 constitutes requirements of this document. For dated references, only the edition cited applies.
298 For undated references, the latest edition of the referenced document (including any
299 amendments) applies.
300 IEC 60062:2019, Marking codes for resistors and capacitors
301 IEC 60063, Preferred number series for resistors and capacitors
302 IEC 60115-1:2020, Fixed resistors for use in electronic equipment – Part 1: Generic
303 specification
304 IEC 60115-8:2023, Fixed resistors for use in electronic equipment – Part 8: Sectional
305 specification: Fixed surface mount resistors
IEC CDV 60115-8-10 © IEC 2025
306 IEC 60115-8-10:202X, Fixed resistors for use in electronic equipment – Part 8-10: Blank detail
307 specification –Surface mount (SMD) film resistors for assembly on circuit boards, for general
308 electronic equipment, classification level G
309 IEC 60286-3, Packaging of components for automatic handling – Part 3: Packaging of surface
310 mount components on continuous tapes
311 IEC 61760-1, Surface mounting technology – Part 1: Standard method for the specification of
312 surface mounting components (SMDs)
313 IEC 61193-2:2007, Quality assessment systems – Part 2: Selection and use of sampling plans
314 for inspection of electronic components and packages
315 .
316 COMMENT 1 The above list of normative references provides an example and needs to be adapted to the actual
317 requirements of the drafted detail specification, indicated by the space marked with "…", which however does not
318 preclude from sorting in proper numerical order.
319 COMMENT 2 According to the ISO/IEC directives, dated references are required when reference is made to a
320 specific part of the referenced standard and generally should be applied only in such cases.
321 COMMENT 3 It is recommended to update any dated references to the most recent revision of the referenced
322 standard when drafting a detail specification. This involves updating of the dated normative references within the
323 text of the drafted detail specification.
324 3 Terms and definitions
325 For the purposes of this document, the terms and definitions given in IEC 60115-1 and in
326 IEC 60115-8, as well as the following, apply.
328 …
329 COMMENT Any terms and their respective definitions specifically required for the scope of the drafted detail
330 specification may be inserted in the space marked with "…", using the prescribed numbering and format. Otherwise,
331 the above statement should be reduced to "For the purposes of this document, the terms and definitions given in
332 IEC 60115-1 and in IEC 60115-8 apply." if no further terms or definitions are required in the drafted detail
333 specification.
334 ISO and IEC maintain terminology databases for use in standardization at the following
335 addresses:
336 • IEC Electropedia: available at https://www.electropedia.org/
337 • ISO Online browsing platform: available at https://www.iso.org/obp
338 4 Characteristics and ratings
339 4.1 General
340 Various parameters of this component are precisely defined in this specification. Unspecified
341 parameters can vary from one component to another.
342 4.2 Dimensions
343 The shape and dimensions of the resistors covered by this specification are shown in Figure 1,
344 with the specific styles and their respective dimensions given in Table 1. Other shapes are
345 permissible within the given dimensions.
IEC CDV 60115-8-10 © IEC 2025
348 Figure 1 – Outline and dimensions
349 COMMENT 1 See IEC 60115-8:2023, 8.2.1.
350 COMMENT 2 The details shown in Figure 1 may repeat information already given in some fields of the title block
351 above. Figure 1 in particular needs to define all dimensions intended to be verified by measurements, which generally
352 includes those dimensions to be prescribed in Table 1.
353 Table 1 – Styles and dimensions
b
Style Dimensions
Mass
a
L W H Y T m
X
b min
mm mm mm mm mg
a
Historical style code, for information only.
b
For information only.
356 COMMENT 3 See IEC 60115-8:2023, 8.2.2.
357 COMMENT 4 The metric style designation is the normative designation used in all other places throughout this
358 detail specification, see IEC 60115-8:2023, 4.2. Column X is an optional column for additional style information, e.g.
359 for traditional alphabetic designations, which generally need to be marked with a respective footnote, e.g. as
360 "Historical style code, for information only".
361 COMMENT 5 The dimensions for body length L, body width W, body height H and minimum bottom side termination
362 length T are given as examples based on the requirements for rectangular (RR) and transversal (RT) resistors
b min
363 and need to correspond to the dimensions identified in Figure 1. The choice of prescribed dimensions needs to be
364 adapted to the actual requirements of the drafted detail specification and the shape of products covered therein. The
365 dimensions may be given in the format of nominal values plus tolerance, or by stating permissible minimum and
366 maximum values. Columns for additional dimensions may be inserted as required.
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367 COMMENT 6 Column Y represents one or more optional column(s) for the prescription of an additional dimension,
368 COMMENT 7 The component mass is not intended to be verified by an inspection procedure. It should be given as
369 the maximum mass of a single component and should be marked with a respective footnote as "For information only".
370 4.3 Ratings
371 The climatic categories applied in this detail specification are given in Table 2.
372 Table 2 – Climatic categories
Climatic category
LCT / UCT / duration
... / ... / ...
... / ... / ...
374 COMMENT 1 See IEC 60115-8:2023, 8.2.3.
375 COMMENT 2 Table 2 may be amended with a column showing the key parameter to which different climatic
376 categories are allocated for the purpose of discrimination, e.g. the applied stability classes.
377 The upper category temperature (UCT), which is used for test procedures, should be based on
378 the maximum element temperature (MET).
379 Table 3 – Ratings
Rated Limiting element voltage Insulation voltage
Style X
dissipation DC or AC r.m.s. DC or AC peak
P U U
70 max ins
mW V V
381 NOTE The insulation voltage U is verified with a test duration of one minute. However, long-term insulation
ins
382 properties can be affected by the influence of moisture, organic material and electrical field across the insulating
383 layer(s).
384 COMMENT 3 See IEC 60115-8:2023, 8.2.6, IEC 60115-8:2023, 8.2.7 and IEC 60115-8:2023, 8.2.8.
385 COMMENT 4 Column X is an optional column for additional information, e.g. an additional rated dissipation at
386 another ambient temperature than the rated temperature 70 °C. Such information should however only be presented
387 if it is traditionally well-established information.
388 COMMENT 5 The insulation voltage shall not be specified lower than the peak value of the AC voltage that can be
389 applied continuously to the resistors and therefore shall not be rated less than U = 1,42 × U .
ins max
390 COMMENT 6 Different sets of ratings may be assigned to variations of another parameter, e.g. climatic categories
391 or stability classes. Then such different sets of ratings should be given in separate tables which need to be clearly
392 assigned to the relevant parameter(s). According to the ISO/IEC directives, such duplicate tables need to be titled
393 with subsequent numbers as required, which will result in the need to update the numbering of subsequent tables
394 accordingly.
395 The permissible dissipation of resistors covered by this detail specification is the rated
396 dissipation as given in Table 3, which is derated for an ambient temperature above the rated
397 temperature 70 °C according to the diagram in Figure 2.
IEC CDV 60115-8-10 © IEC 2025
399 Figure 2 – Derating curve
400 COMMENT 7 See IEC 60115-8:2023, 8.2.6.
401 COMMENT 8 The scale of derated dissipation may be given as absolute value in watts or relative in percent as a
402 fraction of the rated dissipation P70.
403 COMMENT 9 A larger area of operation or permissible temperature rise may be given by the detail specification,
404 provided it includes all the area given in Figure 2.
405 4.4 Resistance range and tolerance on resistance
406 Table 4 gives the combinations of temperature coefficient, tolerance on resistance and
407 resistance range which can be approved in climatic category . / . / . in accordance with this
408 detail specification.
409 COMMENT 1 The above paragraph needs to be adapted to the actual requirements if more than one climatic
410 category is applied in the drafted detail specification; see also COMMENT 5 below.
411 Products from the extent given in Table 4 shall be used for the initial product qualification
412 approval in accordance with 9.2, and for the quality conformance inspection in accordance with
413 9.3.1.
414 The qualification of resistances below or above the specified resistance ranges is permissible
415 if they fulfil the requirements of the stability class required for the closest resistance within a
−6
416 specified range; e.g. resistors of Style . , . ⋅ 10 /K, . %, . Ω shall fulfil the requirements of
417 stability class . .
418 COMMENT 2 The above paragraph should be deleted if individual extension of the approvable resistance ranges
419 is not accepted as being suitable for the scope of the drafted detail specification.
IEC CDV 60115-8-10 © IEC 2025
420 Table 4 – Temperature coefficients, tolerances and resistance ranges for climatic
421 category . / . / .
Temperature Stability
b
Style Tolerance Resistance range
E series
coefficient class
−6 a a
10 /K Code % Code Ω
a
Code letters in accordance with those stated in IEC 60062.
b
Resistance values within the given range are (recommended/required) to be selected from of the given E series
of IEC 60063.
423 COMMENT 3 See IEC 60115-8:2023, 8.2.4.
424 COMMENT 4 The column for the prescription of an E series is optional and may be deleted together with its related
425 footnote if the explicit recommendation of or limitation to resistance values of a particular E series is not suitable for
426 the drafted detail specification. If used, the respective footnote needs to describe the recommendation or limitation
427 associated with the given E series.
428 COMMENT 5 Different sets of resistance ranges may be assigned to different climatic categories, which should be
429 given in separate tables, which then need to be clearly assigned to the respective climatic category. According to
430 the ISO/IEC directives, such duplicate tables need to be titled with subsequent numbers as required, which will result
431 in the need to update the numbering of subsequent tables accordingly.
432 The range of resistors approved in each style, together with the associated temperature
433 coefficient and tolerance, shall be given in the register of approvals, as available for example
434 on the website http://www.iecq.org.
435 5 Tests and test severities
436 COMMENT 1 This clause is used to prescribe the severities of all tests demanded by the generic or sectional
437 specification, which have not been prescribed in these superior specifications.
438 In addition, this clause should be used to prescribe in dedicated subclauses any additional test(s) not specified in
439 the generic and/or sectional specification, and/or additional or increased test severities to those specified in the
440 generic and/or sectional specification, wherever applicable to the scope of the drafted detail specification.
441 COMMENT 2 Owing to the space limitations in Table and Table , and to the need for unambiguous and consistent
442 rulings, the prescriptions in this clause need to contain the full relevant information for each prescribed test.
443 Consequentially, the "Conditions of test" in Table and Table will only quote as much of the prescriptions as is
444 required to provide a suitable overview.
445 5.1 General
446 The following tests shall be performed with the specimens mounted on a test board in
447 accordance with IEC 60115‑8:2023, 5.2.2, except if a special method is explicitly prescribed in
448 the respective subclause.
449 COMMENT The mounting of specimens, as required by most Subclauses 5.xx, normally employs the methods
450 prescribed in IEC 60115-8:2023, 5.2.2. In cases where special mounting provisions are required for the resistors
451 covered by a drafted detail specification, such provisions may be given in a normative annex to that par
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