IEC 60115-9:2003

Fixed resistors for use in electronic equipment - Part 9: Sectional specification: Fixed surface mount resistor networks with individually measurable resistors

prescribes preferred ratings and characteristics and selects from IEC 60115-1, the appropriate Quality Assessment procedures, tests and measuring methods and gives general performance requirements for this type of resistor.

General Information

• Status: Published
• Publication Date: 28-Oct-2003
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 31.040.10 - Fixed resistors
• Technical Committee: TC 40 - Capacitors and resistors for electronic equipment
• Current Stage: PPUB - Publication issued
• Start Date: 29-Feb-2004
• Completion Date: 29-Oct-2003

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD
60115-9
First edition
2003-10
Fixed resistors for use in electronic equipment –
Part 9:
Sectional specification:
Fixed surface mount resistor networks
with individually measurable resistors
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.
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edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
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INTERNATIONAL IEC
STANDARD
60115-9
First edition
2003-10
Fixed resistors for use in electronic equipment –
Part 9:
Sectional specification:
Fixed surface mount resistor networks
with individually measurable resistors
 IEC 2003  Copyright - all rights reserved
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 the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
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P
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 60115-9  IEC:2003(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT –
Part 9: Sectional specification:
Fixed surface mount resistor networks
with individually measurable 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
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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 60115-9 has been prepared by IEC technical committee 40:
Capacitors and resistors for electronic equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
40/1344/FDIS 40/1366/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.

60115-9  IEC:2003(E) – 3 –
The committee has decided that the contents of this publication will remain unchanged until
2008. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
A bilingual edition of this standard may be issued at a later date.

– 4 – 60115-9  IEC:2003(E)
FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT –
Part 9: Sectional specification:
Fixed surface mount resistor networks
with individually measurable resistors
1 General
1.1 Scope
This part of IEC 60115 is applicable to fixed surface mount resistor networks with individually
measurable resistors for use in electronic equipment.
1.2 Object
The object of this standard is to prescribe preferred ratings and characteristics and to select
from IEC 60115-1, the appropriate Quality Assessment procedures, tests and measuring
methods and to give general performance requirements for this type of resistor.
Test severities and requirements prescribed in detail specifications referring to this sectional
specification must be of equal or higher performance level, because lower performance levels
are not permitted.
1.3 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 60063:1963, Preferred number series for resistors and capacitors
Amendment 1 (1967)
Amendment 2 (1977)
IEC 60068-1: Environmental testing – Part 1: General and guidance
IEC 60068-2-1: Environmental testing – Part 2: Tests. Tests A: Cold
IEC 60068-2-2: Environmental testing – Part 2: Tests. Tests B: Dry heat
IEC 60115-1:1999, Fixed resistors for use in electronic equipment – Part 1: Generic
specification
1.4 Information to be given in a detail specification
Detail specifications shall be derived from the relevant blank detail specification.
Detail specifications shall not specify requirements inferior to those of the generic, sectional
specification or blank detail specification.
When more severe requirements are included, they shall be listed in 1.8 of the detail
specification and indicated in the test schedules, for example by an asterisk.

60115-9  IEC:2003(E) – 5 –
The following information shall be given in each detail specification and the values quoted
shall preferably be selected from those given in the appropriate clause of this sectional
specification.
1.4.1 Outline drawing and dimensions
There shall be an illustration of the surface mount resistor network as an aid to easy
recognition and for comparison of the surface mount resistor network with others.
Dimensions and their associated tolerances, which affect interchangeability and mounting,
shall be given in the detail specification. All dimensions shall be stated in millimetres.
Normally the numerical values shall be given for the length, width and thickness of the body.
Schematic diagrams and pin identifications shall be given in the detail specification. Those
are prescribed in Annex A.
Configurations of terminations shall be given in the detail specification. Those are prescribed
in Annex B.
When the outline drawing is other than described above, the detail specification shall state
such dimensional information as will adequately describe the surface mount resistor network.
1.4.2 Mounting
The detail specification shall give guidance on methods of mounting for normal use. Mounting
for test and measurement purposes (when required) shall be in accordance with 4.31 of
IEC 60115-1.
1.4.3 Style (2.2.2 of IEC 60115-1)
The styles given in Table 1 are preferred. All dimensions are in mm.
Table 1 – Style and outline dimensions
Dimensions in mm
a) Construction of
Code Length L Width W Thickness T Diagram
a)
terminals
1005X2 1 ± 0,1 1 ± 0,1 0,35 ± 0,1 AConvex
1005X4 A Convex Concave
2 ± 0,1 1 ± 0,1 0,4 ± 0,15
1608X2 1,6 ± 0,2 1,6 ± 0,2 0,55 ± 0,15 A Convex Concave
1608X4 3,2 ± 0,2 1,6 ± 0,2 0,55 ± 0,15 A Convex Concave
3216X4 5,08 ± 0,2 3,1 ± 0,2 0,55 ± 0,15 A Convex Concave
3216 3,2 ± 0,2 1,6 ± 0,2 0,5 ± 0,15 B, C Convex
4021 D Concave
4 ± 0,2 2,1 ± 0,2 0,6 ± 0,15
6431 6,4 ± 0,2 3,1 ± 0,2 0,6 ± 0,15 B, C Convex Concave
a)
Diagrams are shown in Annex A. Constructions of terminals are shown in Annex B.

– 6 – 60115-9  IEC:2003(E)
1.4.4 Ratings and characteristics
The ratings and characteristics shall be in accordance with the relevant clauses of this
specification together with the following:
Rated resistance range
See 2.2.1. The preferred values are those of the E-series of IEC 60063.
NOTE When products approved to the detail specification have different ranges, the following statement should
be added:
“The range of values available in each style is given in the qualified products list”.
1.4.5 Marking
The detail specification shall specify the content of the marking on the surface mount resistor
network and on the package.
Surface mount resistor networks are generally not marked on the body. If some marking can
be applied, the surface mount resistor network shall be clearly marked with the rated
resistance and as many of the remaining items in 2.4 of IEC 60115-1 as possible.
All items shall be marked on the package. Deviations from the above mentioned requirements
shall be specifically stated.
2 Preferred ratings, characteristics and test severities
2.1 Preferred ratings and characteristics
The values given in detail specifications shall preferably be selected from the following:
2.1.1 Preferred climatic categories
The surface mount resistor networks covered by this specification are classified into climatic
categories according to the general rules given in IEC 60068-1.
The lower and upper category temperature and the duration of the damp heat, steady state
shall be chosen from the following:
Lower category temperature: –55 °C, –40 °C, –25 °C and –10 °C.
Upper category temperature: +85 °C, +100 °C, +125 °C and +155 °C.
Duration of the damp heat, steady state test: 4, 10, 21 and 56 days.
The severities for the cold and dry heat tests are the lower and upper category temperatures
respectively. Because of the construction of some surface mount resistor networks these
temperatures will occur between two of the preferred temperatures given in IEC 60068-2-1
and IEC 60068-2-2. In this event, the nearest preferred temperature within the actual
temperature range of the surface mount resistor network shall be chosen for this severity.
2.1.2 Temperature coefficients and temperature characteristics of resistance
The preferred limits of change in resistance for the temperature characteristics of resistance
test are given in Table 2.
60115-9  IEC:2003(E) – 7 –
Each line in the table gives the preferred temperature coefficient and corresponding
temperature characteristic for 20 °C to 70 °C and limits of change in resistance for the
measurement of the temperature characteristic of resistance (see 4.8 of IEC 60115-1) on
the basis of category temperature ranges of 2.1.1 of this sectional specification.
Table 2 – Temperature coefficients and temperature characteristics of resistance
Temper- Temperature characteristic of resistance
Temper-
ature (limits of percentage change in resistance)
ature
charac-
coeffi-
Reference temperature /lower category Reference temperature /upper category
teristic
cient
temperature temperature
20/70 °°°°C
−
10 /K % +20/–55 +20/–40 +20/–25 +20/–10 +20/+85 +20/+100 +20/+125 +20/+155
1,500
±500 ±2,5 ±3,75 ±3 ±2,25 ±3,25 ±4 ±5,25 ±6,75
±250 ±1,25 ±1,88 ±1,5 ±1,13 0,750 ±1,62 ±2 ±2,62 ±3,38
±100 ±0,5 ±0,75 ±0,6 ±0,45 0,300 ±0,65 ±0,8 ±1,05 ±1,35
0,150
±50 ±0,25 ±0,375 ±0,3 ±0,23 ±0,325 ±0,4 ±0,525 ±0,675
0,075
±25 ±0,125 ±0,188 ±0,15 ±0,113 ±0,162 ±0,2 ±0,262 ±0,33
...