Connectors for electronic equipment - Part 7: Detail specification for 8-way, unshielded, free and fixed connectors

IEC 60603-7:2020 covers 8-way, unshielded, free and fixed connectors and is intended to specify the common dimensions (interface dimensions), mechanical, electrical and environmental characteristics and tests for the family of IEC 60603-7-x connectors. These connectors are intermateable (according to IEC 61076-1 level 2) and interoperable with other IEC 60603-7 series connectors. This fourth edition cancels and replaces the third edition, published in 2008, its Amendment 1:2011 and its Amendment 2:2019. It constitutes a technical revision. This edition includes the following significant technical change with respect to the previous edition:
- Revised the definitions for intermateability and interoperability; added new definitions.
- Corrected dimension line for dimension AZ2 in Figure 5.
- Corrected dimension line for dimension F1 in Figure A.1.
- Revised the reference to ISO;IEC 11801 to ISO;IEC 11801-1.
- Added lower limiting temperature and upper limiting temperature definitions.
- Revised Table 1 to Table 8 so the column order is Minimum-Nominal-Maximum dimensions (ascending order).
- Corrected Table 7: Climatic category and Upper temperature values to 90 °C (to be consistent with the graph in Figure 10 and Note 1 in Figure 10).
- Revised the wording in 8.2, contact resistance, for clarification.
- Revised Figure 11 and Figure 12 and the wording in the Key below for clarification.
- Removed the sentences under the figure in the Introduction.
- Added Annex E.

Connecteurs pour équipements électroniques - Partie 7: Spécification particulière pour les fiches et les embases non écrantées à 8 voies

L'IEC 60603-7:2020 couvre les connecteurs 8 voies, non couverts, libres et fixes et vise à spécifier les dimensions communes (dimensions d’interface), les caractéristiques mécaniques, électriques et environnementales et les tests pour la famille des connecteurs IEC 60603-7-x. Ces connecteurs sont intermates (selon le niveau 2 de l’IEC 61076-1) et interopérables avec d’autres connecteurs de la série IEC 60603-7. Cette quatrième édition annule et remplace la troisième édition, publiée en 2008, son amendement 1:2011 et son amendement 2:2019. Il s’agit d’une révision technique. Cette édition comprend les changements techniques importants suivants par rapport à l’édition précédente :
- Révision des définitions de l’intermiabilité et de l’interopérabilité; a ajouté de nouvelles définitions.
- Ligne de dimension corrigée pour la dimension AZ2 de la figure 5.
- Ligne de dimension corrigée pour la dimension F1 de la figure A.1.
- Révision de la référence à l’ISO/IEC 11801 à l’ISO/IEC 11801-1.
- Ajout d’une température limite inférieure et de définitions de température limitantes supérieures.
- Tableau 1 révisé au tableau 8 de sorte que l’ordre de colonne est des dimensions minimales-nominales-maximales (ordre croissant).
- Tableau corrigé 7 : Catégorie climatique et valeurs de température supérieures à 90 °C (pour être compatible avec le graphique de la figure 10 et de la note 1 de la figure 10).
- Révision du libellé en 8.2, résistance aux contacts, pour clarification.
- Figure 11 et figure 12 révisées et le libellé de la clé ci-dessous pour clarification.
- Suppression des phrases en vertu de la figure de l’Introduction.
- Ajout de l’annexe E.

General Information

Status
Published
Publication Date
08-Oct-2020
Technical Committee
Current Stage
PPUB - Publication issued
Start Date
09-Oct-2020
Completion Date
23-Oct-2020
Ref Project

Relations

Standard
IEC 60603-7:2020 RLV - Connectors for electronic equipment - Part 7: Detail specification for 8-way, unshielded, free and fixed connectors Released:10/9/2020 Isbn:9782832289594
English language
179 pages
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IEC 60603-7:2020 - Connectors for electronic equipment - Part 7: Detail specification for 8-way, unshielded, free and fixed connectors
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IEC 60603-7 ®
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STANDARD
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Connectors for electronic equipment –
Part 7: Detail specification for 8-way, unshielded, free and fixed connectors

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IEC 60603-7 ®
Edition 4.0 2020-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Connectors for electronic equipment –

Part 7: Detail specification for 8-way, unshielded, free and fixed connectors

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.220.01 ISBN 978-2-8322-8959-4

– 2 – IEC 60603-7:2020 RLV © IEC 2020
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 11
4 Common features and typical connector pair . 13
4.1 View showing typical fixed and free connectors (see Figure 2) . 13
4.2 Mating information . 13
4.2.1 General . 13
4.2.2 Contacts – mating conditions . 14
4.2.3 Fixed connector . 17
4.2.4 Free connector . 23
5 Cable terminations and internal connections – Fixed and free connectors . 26
5.1 General . 26
5.2 Termination types . 27
5.2.1 Solder terminations . 27
5.2.2 Solderless terminations . 27
6 Gauges . 27
6.1 Fixed connectors . 27
6.2 Free connectors . 33
7 Characteristics . 38
7.1 General . 38
7.2 Pin and pair grouping assignment . 38
7.3 Classification into climatic category . 38
7.4 Electrical characteristics . 39
7.4.1 Creepage and clearance distances . 39
7.4.2 Voltage proof . 39
7.4.3 Current-temperature derating . 39
7.4.4 Interface contact resistance – initial only . 40
7.4.5 Input to output DC resistance . 40
7.4.6 Input-to-output DC resistance unbalance . 40
7.4.7 Initial insulation resistance . 41
7.4.8 Transfer impedance . 41
7.5 Transmission characteristics . 41
7.6 Mechanical characteristics . 41
7.6.1 Mechanical operation . 41
7.6.2 Effectiveness of connector coupling devices . 41
7.6.3 Insertion and withdrawal forces . 41
8 Tests and test schedule . 41
8.1 General . 41
8.2 Arrangement for interface contact resistance test . 42
8.3 Arrangement for vibration test (test phase CP1) . 44
8.4 Test procedures and measuring methods . 45
8.5 Preconditioning . 45
8.6 Wiring and mounting of specimens . 46

8.6.1 Wiring . 46
8.6.2 Mounting . 46
8.7 Test schedules . 46
8.7.1 General . 46
8.7.2 Basic (minimum) test schedule . 46
8.7.3 Full test schedule . 46
Annex A (normative) Gauging continuity procedure . 58
A.1 Object . 58
A.2 Preparation of the specimens . 58
A.3 Test method . 58
A.4 Final measurements . 58
A.5 Description of the continuity gauge . 58
Annex B (normative) Locking device mechanical operation . 62
B.1 Object . 62
B.2 Preparation of the specimens . 62
B.3 Test method . 62
B.4 Final measurements . 62
Annex C (normative) Gauge requirements . 63
C.1 Fixed connectors . 63
C.2 Free connectors . 63
Annex D (normative) Keystone connector information . 64
D.1 Fixed connector, female contacts Keystone type – Type A, variant 03 in the
previous edition of this standard . 64
D.2 Mounting dimensions for type A, Keystone type variant 03 . 65
Annex E (normative) Levels of compatibility . 67
E.1 General . 67
E.2 Intermountability . 68
E.3 Intermateability . 69
E.4 Intermountability and intermateability . 69
E.5 Interoperability . 70
E.6 Interchangeability . 70
E.7 Backward compatibility . 70
Bibliography . 72

Figure 1 – IEC 60603-7 family document diagram . 7
Figure 2 – View showing typical fixed and free connectors . 13
Figure 3 – Contact interface dimensions with terminated free connector . 15
Figure 4 – Fixed connector details . 20
Figure 5 – Free connector view . 24
Figure 5 – “Go” gauge .
Figure 6 – “No-go” gauges .
Figure 6 – Fixed connector "Go" gauge . 31
Figure 7 – Fixed connector "No-go" gauges . 32
Figure 7 – “No-go” gauges .
Figure 8 – “Go” gauge .
Figure 8 – Free connector "No-go" gauges. 36
Figure 9 – Free connector "Go" gauge . 37

– 4 – IEC 60603-7:2020 RLV © IEC 2020
Figure 10 – Fixed connector pin and pair grouping assignment (front view of
connector) . 38
Figure 11 – Connector de-rating curve . 40
Figure 12 – Arrangement for interface contact resistance test . 43
Figure 13 – Arrangement for vibration test . 45
Figure A.1 – Continuity gauge . 60
Figure A.2 – Continuity gauge insertion . 61
Figure D.1 – Keystone connector . 64
Figure D.2 – Panel drawing . 65

Table 1 – Dimensions for Figure 3 . 16
Table 2 – Dimensions for Figure 4 . 21
Table 3 – Dimensions for Figure 5 . 25
Table 4 – Dimensions for Figure 6 and Figure 7 . 33
Table 5 – Dimensions for Figure 8 . 36
Table 6 – Dimensions for Figure 9 . 37
Table 7 – Climatic categories – selected values . 38
Table 8 – Creepage and clearance distances . 39
Table 9 – Test group P . 47
Table 10 – Test group AP . 48
Table 11 – Test group BP . 51
Table 12 – Test group CP . 53
Table 13 – Test group DP . 54
Table 14 – Test group EP . 56
Table 15 – Test group FP . 56
Table A.1 – Dimensions for Figure A.1 . 59
Table D.1 – Dimensions for Figure D.1 . 65
Table D.2 – Dimensions for Figure D.2 . 66
b) c) b)
Table E.1 – Levels of compatibility and required parameters . 68

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONNECTORS FOR ELECTRONIC EQUIPMENT –

Part 7: Detail specification for 8-way, unshielded,
free and fixed connectors
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
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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.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.

– 6 – IEC 60603-7:2020 RLV © IEC 2020
International Standard IEC 60603-7 has been prepared by subcommittee 48B: Electrical
connectors, of IEC technical committee 48: Electrical connectors and mechanical structures
for electrical and electronic equipment.
This fourth edition cancels and replaces the third edition, published in 2008, its
Amendment 1:2011 and its Amendment 2:2019. It constitutes a technical revision.
This edition includes the following significant technical change with respect to the previous
edition:
– Revised the definitions for intermateability and interoperability; added new definitions.
– Corrected dimension line for dimension AZ2 in Figure 5.
– Corrected dimension line for dimension F1 in Figure A.1.
– Revised the reference to ISO/IEC 11801 to ISO/IEC 11801-1.
– Added lower limiting temperature and upper limiting temperature definitions.
– Revised Table 1 to Table 8 so the column order is Minimum-Nominal-Maximum
dimensions (ascending order).
– Corrected Table 7: Climatic category and Upper temperature values to 90 °C (to be
consistent with the graph in Figure 10 and Note 1 in Figure 10).
– Revised the wording in 8.2, contact resistance, for clarification.
– Revised Figure 11 and Figure 12 and the wording in the Key below for clarification.
– Removed the sentences under the figure in the Introduction.
– Added Annex E.
The text of this International Standard is based on the following documents:
FDIS Report on voting
48B/2832/FDIS 8B/2843/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of IEC 60603-7 series, under the general title Connectors for electronic
equipment, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
INTRODUCTION
IEC 60603-7 is the base specification of the whole series. Subsequent specifications do not
duplicate information given in the base document, but list only additional requirements. For
complete specifications regarding a component of a higher numbered document, all lower
numbered documents must be considered as well. Figure 1 shows the interrelation of the
documents.
It should be noted that during the preparation of the third edition of IEC 60603-7, the
subcommittee 48B Cat 6&7 project team members determined the current de-rating curve in
the standard was not correct. Several experts researched the current rating-temperature rise
measurements for 60603-7 style connectors and verified that the de-rating curve in the
published standard has been incorrect for many years. A corrected figure (Figure 10) has
been prepared and inserted in this edition.

Figure 1 – IEC 60603-7 family document diagram

– 8 – IEC 60603-7:2020 RLV © IEC 2020
CONNECTORS FOR ELECTRONIC EQUIPMENT –

Part 7: Detail specification for 8-way, unshielded,
free and fixed connectors
1 General
1 Scope
This part of IEC 60603-7 covers 8-way, unshielded, free and fixed connectors and is intended
to specify the common dimensions (interface dimensions), mechanical, electrical and
environmental characteristics and tests for the family of IEC 60603-7-x connectors.
These connectors are intermateable (according to IEC 61076-1 level 2) and interoperable with
other IEC 60603-7 series connectors.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements 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 60050-581:2008, International Electrotechnical Vocabulary (IEV) – Part 581:
Electromechanical components for electronic equipment
IEC 60068-1, Environmental testing – Part 1: General and guidance
IEC 60068-2-14, Basic environmental testing procedures – Part 2-14: Tests − Test N: Change
of temperature
IEC 60068-2-38, Basic Environmental testing procedures – Part 2-38: Tests − Test Z/AD:
Composite temperature/ humidity cyclic test
IEC 60352-2, Solderless connections – Part 2: Crimped connections – General requirements,
test methods and practical guidance
IEC 60352-3, Solderless connections – Part 3: Solderless Accessible insulation displacement
(ID) connections – General requirements, test methods and practical guidance
IEC 60352-4, Solderless connections – Part 4: Solderless Non-accessible insulation
displacement (ID) connections – General requirements, test methods and practical guidance
IEC 60352-5, Solderless connections – Part 5: Press-in connections – General requirements,
test methods and practical guidance
IEC 60352-6, Solderless connections – Part 6: Insulation piercing connections – General
requirements, test methods and practical guidance
IEC 60352-7, Solderless connections – Part 7: Spring clamp connections – General
requirements, test methods and practical guidance

IEC 60512 (all parts), Connectors for electronic equipment – Tests and measurements
IEC 60512-1, Connectors for electrical and electronic equipment – Tests and measurements –
Part 1: Generic specification
IEC 60512-1-1, Connectors for electronic equipment – Tests and measurements – Part 1-1:
General examination – Test 1a: Visual examination
IEC 60512-1-2, Connectors for electronic equipment – Tests and measurements – Part 1-2:
General examination – Test 1b: Examination of dimensions and mass
IEC 60512-1-100, Connectors for electronic equipment – Tests and measurements – Part 1-
100: General – Applicable publications
IEC 60512-2-1, Connectors for electronic equipment – Tests and measurements – Part 2-1:
Electrical continuity and contact resistance tests – Test 2a: Contact resistance – Millivolt level
method
IEC 60512-2-5, Connectors for electronic equipment – Tests and measurements – Part 2-5:
Electrical continuity and contact resistance tests – Test 2e: Contact disturbance
IEC 60512-3-1, Connectors for electronic equipment – Tests and measurements – Part 3-1:
Insulation tests – Test 3a: Insulation resistance
IEC 60512-4-1, Connectors for electronic equipment – Tests and measurements – Part 4-1:
Voltage stress tests – Test 4a: Voltage proof
IEC 60512-5-2, Connectors for electronic equipment – Tests and measurements – Part 5-2:
Current-carrying capacity tests – Test 5b: Current-temperature derating
IEC 60512-6-4, Connectors for electronic equipment – Tests and measurements – Part 6-4:
Dynamic stress tests – Test 6d: Vibration (sinusoidal)
IEC 60512-9-1, Connectors for electronic equipment – Tests and measurements – Part 9-1:
Endurance tests – Test 9a: Mechanical operation
IEC 60512-9-2, Connectors for electronic equipment – Tests and measurements – Part 9-2:
Endurance tests – Test 9b: Electrical load and temperature
IEC 60512-11-4, Connectors for electronic equipment – Tests and measurements – Part 11-4:
Climatic tests – Test 11d: Rapid change of temperature
IEC 60512-11-7, Connectors for electronic equipment – Tests and measurements – Part 11-7:
Climatic tests – Test 11g: Flowing mixed gas corrosion test
IEC 60512-13-2, Connectors for electronic equipment – Tests and measurements – Part 13-2:
Mechanical operation tests – Test 13b: Insertion and withdrawal forces
IEC 60512-15-6, Connectors for electronic equipment – Tests and measurements – Part 15-6:
Connector tests (mechanical) – Test 15f: Effectiveness of connector coupling devices
IEC 60603-7 (all parts), Connectors for electronic equipment
IEC 60664-1, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, requirements and tests

– 10 – IEC 60603-7:2020 RLV © IEC 2020
IEC 61076-1:2006, Connectors for electronic equipment – Product requirements – Part 1:
Generic specification
IEC 61076-3, Connectors for electronic equipment – Product requirements – Part 3:
Rectangular connectors – Sectional specification
IEC 61156 (all parts), Multicore and symmetrical pair/quad cables for digital communications
IEC 61156-1, Multicore and symmetrical pair/quad cables for digital communications – Part 1:
Generic specification
IEC 61156-2, Multicore and symmetrical pair/quad cables for digital communications – Part 2:
Symmetrical pair/quad cables with transmission characteristics up to 100 MHz – Horizontal
floor wiring – Sectional specification
IEC 61156-3, Multicore and symmetrical pair/quad cables for digital communications – Part 3:
cable – Sectional specification
Work area wiring
IEC 61156-4, Multicore and symmetrical pair/quad cables for digital communications – Part 4:
Riser cables – Sectional specification
IEC 61156-5, Multicore and symmetrical pair/quad cables for digital communications – Part 5:
Symmetrical pair/quad cables with transmission characteristics up to 600 1 000 MHz –
Horizontal floor wiring – Sectional specification
IEC 61156-6, Multicore and symmetrical pair/quad cables for digital communications – Part 6:
Symmetrical pair/quad cables with transmission characteristics up to 1 000 MHz – Work area
wiring – Sectional specification
IEC 61156-7, Multicore and symmetrical pair/quad cables for digital communications – Part 7:
Symmetrical pair cables with transmission characteristics up to 1 200 MHz – Sectional
specification for digital and analog communication cables
IEC 61760-3, Surface mounting technology – Part 3: Standard method for the specification of
components for through hole reflow (THR) soldering
IEC TR 63040, Guidance on clearances and creepage distances in particular for distances
equal to or less than 2 mm – Test results of research on influencing parameters
ISO/IEC 11801-1, Information technology – Generic cabling for customer premises – Part 1:
General requirements
ISO 1302, Geometrical Product Specifications (GPS) – Indication of surface texture in
technical product documentation
ITU-T Recommendation K.20:2000 , Resistibility of telecommunication equipment installed in
a telecommunications centre to overvoltages and overcurrents
ITU-T Recommendation K.44:2000 , Resistibility tests for telecommunication equipment
exposed to overvoltages and overcurrents – Basic Recommendation
___________
This document has been replaced by a new edition (2003), but for the purposes of this document, the 2000
edition is cited.
This document has been replaced by a new edition (2003), but for the purposes of this document, the 2000
edition is cited.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-581,
IEC 61076-1, IEC 60512-1, and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
intermateability
intermateability (level 2 of IEC 61076-1:2006 (Ed 2.0) is ensured by application of the "Go"
and "No‑Go" gauge requirements in the standards that may be referenced, and by adherence
to the dimensional requirements within therein
SEE: Clause E.3.
3.2
interoperability
interoperability of different IEC 60603-7 connectors and of IEC 60603-7 connectors with
connectors of other families (e.g. IEC 61076-3 series) is ensured by compliance with the
specified interface dimensions, when they have the same number of contacts, the same
electrical wiring-related dimensions and when the lowest electrical, mechanical and climatic
performance (performance level) among the two connectors is suitable for the intended
application
SEE: Clause E.5.
3.3
category
relevant level of transmission performance as given in ISO/IEC 11801-1
3.4
Keystone connector
is defined by its mounting features
Note 1 to entry: The dimensional requirements for the connector and its corresponding mounting panel are
defined in Annex D.
3.5
number of contacts
number of contacts (or ways) that a connector owns, including the protective and/or functional
earth contact(s), if any
Note 1 to entry: A connector for removable contacts is characterized by its number of contact positions (seats): its
number of contacts (ways) may be lower than the number of contact positions (seats).
Note 2 to entry: The same number of contacts does not grant the same electrical interface: the geometry of said
contacts may be different while their number is the same.
3.6
overall dimensions
dimensions providing the overall space occupied by a connector
Note 1 to entry: Two connectors of the same gender may have the same overall dimensions but different
mounting dimensions and/or different interface dimensions.

– 12 – IEC 60603-7:2020 RLV © IEC 2020
3.7
interface dimensions
set of dimensions required to fully describe the connector’s mating interface, belonging to
both the connector insert and to the relevant electric contacts
Note 1 to entry: Interface dimensions enable the proper functioning of a mated set of connectors according to the
relevant detail product specification or manufacturer’s detail specification.
Note 2 to entry: Two connectors with same interface dimensions have the same number of contact seats (or
positions), whereas they may not show the same number of contacts (ways).
3.8
mounting dimensions
dimensions enabling the mounting of a connector
Note 1 to entry: Examples of mounting dimensions are panel cutout size, size and interaxes of fixing holes or
threads.
Note 2 to entry: The geometry of the mounting interface of Printed Circuit Board connectors to the PCB belongs
to the mounting dimensions: two Printed Circuit Board connectors of the same gender with the same mounting
dimensions share the same pattern and pitch of their contacts.
Note 3 to entry: Two connectors not of the Printed Circuit Board type of the same gender with the same mounting
dimensions may have different interface dimensions.
Note 4 to entry: Two connectors of the same gender with the same mounting dimensions may have different
overall dimensions.
3.9
electrical wiring-related dimensions
dimensions related to the wiring of the connector, i.e. to its number and type of contacts
(ways)
Note 1 to entry: Two connectors of the same gender with the same electrical wiring-related dimensions have the
same number of contacts (ways) or contact positions (seats), the same dimensions of these contacts or contact
positions, the same overall dimensions, the same interface dimensions, and if they are Printed Circuit Board
connectors, the same mounting dimensions.
3.10
electrical, mechanical and climatic performances
levels of electrical, mechanical and climatic performance assigned to a connector in the
relevant detail product specification or manufacturer’s detail specification, therein verified
through dedicated groups of tests
Note 1 to entry: The electrical performance includes signal integrity.

4 Common features and typical connector pair
4.1 View showing typical fixed and free connectors (see Figure 2)

Figure 2 – View showing typical fixed and free connectors
4.2 Mating information
4.2.1 General
Dimensions are given in millimetres. Drawings are shown in third-angle projection. The shape
of connectors may deviate from those given in Figure 2 to Figure 5 as long as the dimensions
specified are not changed. Table 1 through Table 3 list the dimensions for the connectors in
Figure 2 through Figure 5.
– 14 – IEC 60603-7:2020 RLV © IEC 2020
4.2.2 Contacts – mating conditions
P1
B2
-D-
F2
K2
N2
R2
0,15 mm D
A2
P3
C2
B2
-D-
N2
D
0,15 mm
IEC  1011/08
H2 2
J2
G2
M2
D2
E2
IEC  087/05
Key
1 Female contact of fixed connector The mating information shown can only be achieved with a free
connector with a cable attached.
2 Burrs shall not project above the top of the contact in this area, since it may be a contact area.
3 Optional angle.
4 Preferred contact interface detail.
5 Minimum preferred contact configuration.
6 Configuration with round contact profile.
7 Configuration with rectangular contact profile.

Key
1 Female contact of fixed connector The mating information shown can only be achieved with a free
connector with a cable attached.
2 Burrs shall not project above the top of the contact in this area, since it may be a contact area.
3 Optional angle.
4 Preferred contact interface detail.
5 Minimum preferred contact configuration.
6 Configuration with round contact profile.
7 Configuration with rectangular contact profile.
Figure 3 – Contact interface dimensions with terminated free connector

– 16 – IEC 60603-7:2020 RLV © IEC 2020
Table 1 – Dimensions for Figure 3
Letter Maximum Minimum
mm mm
A2 1,45 0,89
B2 0,61 0,51
C2 0,46 0,03
D2 2,79
E2 4,11
F2 6,22
H2 0,38
J2 0,64 0,38
K2 6,15 5,89
M2 0,30
N2 0,28
P1 0,50 0,45
P3 0,50 0,36
R2 4,83
Letter Maximum
G2 10°
Care shall be taken that the fixed connector contacts avoid interference with the plastic of the free connector.

Dimensions in millimetres
Letter Minimum Maximum
A2 0,89 1,45
B2 0,51 0,61
C2 0,03 0,46
D2 2,79
E2 4,11
F2 6,22
G2 10°
H2 0,38
J2 0,38 0,64
K2 5,89 6,15
M2 0,30
N2 0,28
P1 0,45 0,50
P3 0,36 0,50
R2 4,83
Care shall be taken that the fixed connector contacts avoid interference with the
plastic of the free connector.

4.2.3 Fixed connector
-X-
B1
0,05 mm X
AD1 A 3
0,05 mm C
(7×) AH1
AH1
AM1
AD1
K1
-B-
AB1
AB1
AM1
A
T1
0,25 mm C
W1
0,25 mm C
S1
-C-
IEC  1012/08
Key
1 Contact zone. Contacts shall be completely within their individual contact zone in the area indicated.
2 0°15’ maximum taper.
3 Section A-A: see Figure 3b).
4 Relief outside of the area defined by dimension AM1 on both sides of the spring contacts in the fixed
connector is permitted.
– 18 – IEC 60603-7:2020 RLV © IEC 2020

Key
1 Contact zone. Contacts shall be completely within their individual contact zone in the area indicated.
2 0°15’ maximum taper.
3 Section A-A: see Figure 4b).
4 Relief outside of the area defined by dimension AM1 on both sides of the spring contacts in the fixed
connector is permitted.
5 All internal corners in the connector cavity shall be 0,38 mm radius maximum unless otherwise specified.
Figure 4a) – View of contact zone

AN1
AT1
AS1
1 2
AT1
-B-
AC1
Z1
AK1
AA1
AP1
AJ1
AL1
SE1
X1
A1
Y1
-A-
IEC  1013/08
View of contact zone section A-A
Key
1 Optional contact rest.
2 Preferred free connector stop.
3 Contacts shown at rest. Contacts shall always be contained inside guide slots. Contacts shall move
freely within their guide slots.
4 This surface need not be planar or coincident with the surface below the locking device as long as
insertion, latching and unlatching of free connectors is not inhibited.
5 Maximum forward extension of contacts below surface AC1 to avoid contact with shields of free
connectors. Applies in the mated state.
6 Projections beyond AL1 dimension shall not prevent finger access to the free connector locking device.
7 All internal corners in the connector cavity shall be 0,38 mm radius maximum unless otherwise
specified.
– 20 – IEC 60603-7:2020 RLV © IEC 2020

Key
1 Optional contact rest.
2 Preferred free connector stop.
3 Contacts shown at rest. Contacts shall always be contained inside guide slots. Contacts shall move
freely within their guide slots.
4 This surface need not be planar or coincident with the surface below the locking device as long as
insertion, latching and unlatching of free connectors is not inhibited.
5 Maximum forward extension of contacts below surface AC1 to avoid contact with shields of free
connectors. Applies in the mated state.
6 Projections beyond AL1 dimension shall not prevent finger access to the free connector locking device.

Figure 4b) – Section A-A
Figure 4 – Fixed connector details

Table 2 – Dimensions for Figure 4
Letter Maximum Minimum Nominal (ref.)
mm mm mm
A1 1,47
B1 0,71
K1 5,84
S1 12,04 11,84 11,94
T1 4,19 3,94
W1 6,38 6,22
X1 6,86 6,68
Y1 2,40
Z1 2,08
AA1 1,24
AB1 0,38
AC1 6,96 6,76 6,86
AD1 0,13
AH1  1,02
a
TP
AK1 8,66 8,38
AL1 1,40
AM1 1,52
AP1 1,27
AS1 0,08
AT1  0,76
SE1 5,80
a
TP indicates true position.
Letter Maximum Suggested minimum
AJ1 15°
AN1 3°30’
– 22 – IEC 60603-7:2020 RLV © IEC 2020
Dimensions in millimetres
Letter Minimum Nominal (ref.) Maximum
A1 1,47
B1  0,71
K1  5,84
S1 11,84 11,94 12,04
T1 3,94 4,19
W1 6,22 6,38
X1 6,68 6,86
Y1 2,40
Z1 2,08
AA1  1,24
AB1  0,38
AC1 6,76 6,86 6,96
AD1  0,13
AH1 1,02
a
TP
AJ1 15°
AK1 8,38 8,66
AL1 1,40
AM1 1,52
AN1  3°30’
AP1 1,27
AS1  0,08
AT1 0,76
SE1  5,80
a
TP indicates true position.
4.2.4 Free connect
...


IEC 60603-7 ®
Edition 4.0 2020-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Connectors for electronic equipment –
Part 7: Detail specification for 8-way, unshielded, free and fixed connectors

Connecteurs pour équipements électroniques –
Partie 7: Spécification particulière pour les fiches et les embases non écrantées
à 8 voies
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IEC 60603-7 ®
Edition 4.0 2020-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Connectors for electronic equipment –

Part 7: Detail specification for 8-way, unshielded, free and fixed connectors

Connecteurs pour équipements électroniques –

Partie 7: Spécification particulière pour les fiches et les embases non écrantées

à 8 voies
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.220.01 ISBN 978-2-8322-8894-8

– 2 – IEC 60603-7:2020 © IEC 2020
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 10
4 Common features and typical connector pair . 12
4.1 View showing typical fixed and free connectors (see Figure 2) . 12
4.2 Mating information . 13
4.2.1 General . 13
4.2.2 Contacts – mating conditions . 14
4.2.3 Fixed connector . 16
4.2.4 Free connector . 19
5 Cable terminations and internal connections – Fixed and free connectors . 20
5.1 General . 20
5.2 Termination types . 21
5.2.1 Solder terminations . 21
5.2.2 Solderless terminations . 21
6 Gauges . 21
6.1 Fixed connectors . 21
6.2 Free connectors . 24
7 Characteristics . 27
7.1 General . 27
7.2 Pin and pair grouping assignment . 27
7.3 Classification into climatic category . 27
7.4 Electrical characteristics . 28
7.4.1 Creepage and clearance distances . 28
7.4.2 Voltage proof . 28
7.4.3 Current-temperature derating . 28
7.4.4 Interface contact resistance – initial only . 29
7.4.5 Input to output DC resistance . 29
7.4.6 Input-to-output DC resistance unbalance . 29
7.4.7 Initial insulation resistance . 30
7.4.8 Transfer impedance . 30
7.5 Transmission characteristics . 30
7.6 Mechanical characteristics . 30
7.6.1 Mechanical operation . 30
7.6.2 Effectiveness of connector coupling devices . 30
7.6.3 Insertion and withdrawal forces . 30
8 Tests and test schedule . 30
8.1 General . 30
8.2 Arrangement for interface contact resistance test . 31
8.3 Arrangement for vibration test (test phase CP1) . 32
8.4 Test procedures and measuring methods . 32
8.5 Preconditioning . 33
8.6 Wiring and mounting of specimens . 33

8.6.1 Wiring . 33
8.6.2 Mounting . 33
8.7 Test schedules . 33
8.7.1 General . 33
8.7.2 Basic (minimum) test schedule . 33
8.7.3 Full test schedule . 33
Annex A (normative) Gauging continuity procedure . 40
A.1 Object . 40
A.2 Preparation of the specimens . 40
A.3 Test method . 40
A.4 Final measurements . 40
A.5 Description of the continuity gauge . 40
Annex B (normative) Locking device mechanical operation . 43
B.1 Object . 43
B.2 Preparation of the specimens . 43
B.3 Test method . 43
B.4 Final measurements . 43
Annex C (normative) Gauge requirements . 44
C.1 Fixed connectors . 44
C.2 Free connectors . 44
Annex D (normative) Keystone connector information . 45
D.1 Fixed connector, female contacts Keystone type – Type A, variant 03 in the
previous edition of this standard . 45
D.2 Mounting dimensions for type A, Keystone type variant 03 . 46
Annex E (normative) Levels of compatibility . 47
E.1 General . 47
E.2 Intermountability . 48
E.3 Intermateability . 49
E.4 Intermountability and intermateability . 49
E.5 Interoperability . 50
E.6 Interchangeability . 50
E.7 Backward compatibility . 50
Bibliography . 52

Figure 1 – IEC 60603-7 family document diagram . 7
Figure 2 – View showing typical fixed and free connectors . 12
Figure 3 – Contact interface dimensions with terminated free connector . 14
Figure 4 – Fixed connector details . 17
Figure 5 – Free connector view . 19
Figure 6 – Fixed connector "Go" gauge . 22
Figure 7 – Fixed connector "No-go" gauges . 23
Figure 8 – Free connector "No-go" gauges. 25
Figure 9 – Free connector "Go" gauge . 26
Figure 10 – Fixed connector pin and pair grouping assignment (front view of
connector) . 27
Figure 11 – Connector de-rating curve . 29
Figure 12 – Arrangement for interface contact resistance test . 31

– 4 – IEC 60603-7:2020 © IEC 2020
Figure 13 – Arrangement for vibration test . 32
Figure A.1 – Continuity gauge . 42
Figure A.2 – Continuity gauge insertion . 42
Figure D.1 – Keystone connector . 45
Figure D.2 – Panel drawing . 46

Table 1 – Dimensions for Figure 3 . 15
Table 2 – Dimensions for Figure 4 . 18
Table 3 – Dimensions for Figure 5 . 20
Table 4 – Dimensions for Figure 6 and Figure 7 . 24
Table 5 – Dimensions for Figure 8 . 25
Table 6 – Dimensions for Figure 9 . 26
Table 7 – Climatic categories – selected values . 27
Table 8 – Creepage and clearance distances . 28
Table 9 – Test group P . 34
Table 10 – Test group AP . 34
Table 11 – Test group BP . 36
Table 12 – Test group CP . 37
Table 13 – Test group DP . 38
Table 14 – Test group EP . 39
Table 15 – Test group FP . 39
Table A.1 – Dimensions for Figure A.1 . 41
Table D.1 – Dimensions for Figure D.1 . 45
Table D.2 – Dimensions for Figure D.2 . 46
Table E.1 – Levels of compatibility and required parameters . 48

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONNECTORS FOR ELECTRONIC EQUIPMENT –

Part 7: Detail specification for 8-way, unshielded,
free and fixed connectors
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 60603-7 has been prepared by subcommittee 48B: Electrical
connectors, of IEC technical committee 48: Electrical connectors and mechanical structures
for electrical and electronic equipment.
This fourth edition cancels and replaces the third edition, published in 2008, its
Amendment 1:2011 and its Amendment 2:2019. It constitutes a technical revision.
This edition includes the following significant technical change with respect to the previous
edition:
– Revised the definitions for intermateability and interoperability; added new definitions.
– Corrected dimension line for dimension AZ2 in Figure 5.
– Corrected dimension line for dimension F1 in Figure A.1.
– Revised the reference to ISO/IEC 11801 to ISO/IEC 11801-1.

– 6 – IEC 60603-7:2020 © IEC 2020
– Added lower limiting temperature and upper limiting temperature definitions.
– Revised Table 1 to Table 8 so the column order is Minimum-Nominal-Maximum
dimensions (ascending order).
– Corrected Table 7: Climatic category and Upper temperature values to 90 °C (to be
consistent with the graph in Figure 10 and Note 1 in Figure 10).
– Revised the wording in 8.2, contact resistance, for clarification.
– Revised Figure 11 and Figure 12 and the wording in the Key below for clarification.
– Removed the sentences under the figure in the Introduction.
– Added Annex E.
The text of this International Standard is based on the following documents:
FDIS Report on voting
48B/2832/FDIS 8B/2843/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of IEC 60603-7 series, under the general title Connectors for electronic
equipment, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
INTRODUCTION
IEC 60603-7 is the base specification of the whole series. Subsequent specifications do not
duplicate information given in the base document, but list only additional requirements. For
complete specifications regarding a component of a higher numbered document, all lower
numbered documents must be considered as well. Figure 1 shows the interrelation of the
documents.
Figure 1 – IEC 60603-7 family document diagram

– 8 – IEC 60603-7:2020 © IEC 2020
CONNECTORS FOR ELECTRONIC EQUIPMENT –

Part 7: Detail specification for 8-way, unshielded,
free and fixed connectors
1 Scope
This part of IEC 60603-7 covers 8-way, unshielded, free and fixed connectors and is intended
to specify the common dimensions (interface dimensions), mechanical, electrical and
environmental characteristics and tests for the family of IEC 60603-7-x connectors.
These connectors are intermateable (according to IEC 61076-1 level 2) and interoperable with
other IEC 60603-7 series connectors.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements 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 60050-581:2008, International Electrotechnical Vocabulary (IEV) – Part 581:
Electromechanical components for electronic equipment
IEC 60068-1, Environmental testing – Part 1: General and guidance
IEC 60068-2-38: Environmental testing – Part 2-38: Tests – Test Z/AD: Composite
temperature/humidity cyclic test
IEC 60352-2, Solderless connections – Part 2: Crimped connections – General requirements,
test methods and practical guidance
IEC 60352-3, Solderless connections – Part 3: Accessible insulation displacement (ID)
connections – General requirements, test methods and practical guidance
IEC 60352-4, Solderless connections – Part 4: Non-accessible insulation displacement (ID)
connections – General requirements, test methods and practical guidance
IEC 60352-5, Solderless connections – Part 5: Press-in connections – General requirements,
test methods and practical guidance
IEC 60352-6, Solderless connections – Part 6: Insulation piercing connections – General
requirements, test methods and practical guidance
IEC 60352-7, Solderless connections – Part 7: Spring clamp connections – General
requirements, test methods and practical guidance
IEC 60512-1, Connectors for electrical and electronic equipment – Tests and measurements –
Part 1: Generic specification
IEC 60512-1-1, Connectors for electronic equipment – Tests and measurements – Part 1-1:
General examination – Test 1a: Visual examination

IEC 60512-1-2, Connectors for electronic equipment – Tests and measurements – Part 1-2:
General examination – Test 1b: Examination of dimensions and mass
IEC 60512-1-100, Connectors for electronic equipment – Tests and measurements – Part 1-
100: General – Applicable publications
IEC 60512-2-1, Connectors for electronic equipment – Tests and measurements – Part 2-1:
Electrical continuity and contact resistance tests – Test 2a: Contact resistance – Millivolt level
method
IEC 60512-2-5, Connectors for electronic equipment – Tests and measurements – Part 2-5:
Electrical continuity and contact resistance tests – Test 2e: Contact disturbance
IEC 60512-3-1, Connectors for electronic equipment – Tests and measurements – Part 3-1:
Insulation tests – Test 3a: Insulation resistance
IEC 60512-4-1, Connectors for electronic equipment – Tests and measurements – Part 4-1:
Voltage stress tests – Test 4a: Voltage proof
IEC 60512-5-2, Connectors for electronic equipment – Tests and measurements – Part 5-2:
Current-carrying capacity tests – Test 5b: Current-temperature derating
IEC 60512-6-4, Connectors for electronic equipment – Tests and measurements – Part 6-4:
Dynamic stress tests – Test 6d: Vibration (sinusoidal)
IEC 60512-9-1, Connectors for electronic equipment – Tests and measurements – Part 9-1:
Endurance tests – Test 9a: Mechanical operation
IEC 60512-9-2, Connectors for electronic equipment – Tests and measurements – Part 9-2:
Endurance tests – Test 9b: Electrical load and temperature
IEC 60512-11-4, Connectors for electronic equipment – Tests and measurements – Part 11-4:
Climatic tests – Test 11d: Rapid change of temperature
IEC 60512-11-7, Connectors for electronic equipment – Tests and measurements – Part 11-7:
Climatic tests – Test 11g: Flowing mixed gas corrosion test
IEC 60512-13-2, Connectors for electronic equipment – Tests and measurements – Part 13-2:
Mechanical operation tests – Test 13b: Insertion and withdrawal forces
IEC 60512-15-6, Connectors for electronic equipment – Tests and measurements – Part 15-6:
Connector tests (mechanical) – Test 15f: Effectiveness of connector coupling devices
all parts), Connectors for electronic equipment
IEC 60603-7 (
IEC 60664-1, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, requirements and tests
IEC 61076-1:2006, Connectors for electronic equipment – Product requirements – Part 1:
Generic specification
IEC 61076-3, Connectors for electronic equipment – Product requirements – Part 3:
Rectangular connectors – Sectional specification

– 10 – IEC 60603-7:2020 © IEC 2020
IEC 61156-2, Multicore and symmetrical pair/quad cables for digital communications – Part 2:
Symmetrical pair/quad cables with transmission characteristics up to 100 MHz – Horizontal
floor wiring – Sectional specification
IEC 61156-3, Multicore and symmetrical pair/quad cables for digital communications – Part 3:
Work area cable – Sectional specification
IEC 61156-4, Multicore and symmetrical pair/quad cables for digital communications – Part 4:
Riser cables – Sectional specification
IEC 61156-5, Multicore and symmetrical pair/quad cables for digital communications – Part 5:
Symmetrical pair/quad cables with transmission characteristics up to 1 000 MHz – Horizontal
floor wiring – Sectional specification
IEC 61156-6, Multicore and symmetrical pair/quad cables for digital communications – Part 6:
Symmetrical pair/quad cables with transmission characteristics up to 1 000 MHz – Work area
wiring – Sectional specification
IEC 61156-7, Multicore and symmetrical pair/quad cables for digital communications – Part 7:
Symmetrical pair cables with transmission characteristics up to 1 200 MHz – Sectional
specification for digital and analog communication cables
IEC 61760-3, Surface mounting technology – Part 3: Standard method for the specification of
components for through hole reflow (THR) soldering
IEC TR 63040, Guidance on clearances and creepage distances in particular for distances
equal to or less than 2 mm – Test results of research on influencing parameters
ISO/IEC 11801-1, Information technology – Generic cabling for customer premises – Part 1:
General requirements
ISO 1302, Geometrical Product Specifications (GPS) – Indication of surface texture in
technical product documentation
ITU-T Recommendation K.20:2000 , Resistibility of telecommunication equipment installed in
a telecommunications centre to overvoltages and overcurrents
ITU-T Recommendation K.44:2000 , Resistibility tests for telecommunication equipment
exposed to overvoltages and overcurrents – Basic Recommendation
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-581,
IEC 61076-1, IEC 60512-1, and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
___________
This document has been replaced by a new edition (2003), but for the purposes of this document, the 2000
edition is cited.
This document has been replaced by a new edition (2003), but for the purposes of this document, the 2000
edition is cited.
3.1
intermateability
intermateability (level 2 of IEC 61076-1) is ensured by application of the "Go" and "No‑Go"
gauge requirements in the standards that may be referenced, and by adherence to the
dimensional requirements therein
SEE: Clause E.3.
3.2
interoperability
interoperability of different IEC 60603-7 connectors and of IEC 60603-7 connectors with
connectors of other families (e.g. IEC 61076-3 series) is ensured by compliance with the
specified interface dimensions, when they have the same number of contacts, the same
electrical wiring-related dimensions and when the lowest electrical, mechanical and climatic
performance (performance level) among the two connectors is suitable for the intended
application
SEE: Clause E.5.
3.3
category
relevant level of transmission performance as given in ISO/IEC 11801-1
3.4
Keystone connector
is defined by its mounting features
Note 1 to entry: The dimensional requirements for the connector and its corresponding mounting panel are
defined in Annex D.
3.5
number of contacts
number of contacts (or ways) that a connector owns, including the protective and/or functional
earth contact(s), if any
Note 1 to entry: A connector for removable contacts is characterized by its number of contact positions (seats): its
number of contacts (ways) may be lower than the number of contact positions (seats).
Note 2 to entry: The same number of contacts does not grant the same electrical interface: the geometry of said
contacts may be different while their number is the same.
3.6
overall dimensions
dimensions providing the overall space occupied by a connector
Note 1 to entry: Two connectors of the same gender may have the same overall dimensions but different
mounting dimensions and/or different interface dimensions.
3.7
interface dimensions
set of dimensions required to fully describe the connector’s mating interface, belonging to
both the connector insert and to the relevant electric contacts
Note 1 to entry: Interface dimensions enable the proper functioning of a mated set of connectors according to the
relevant detail product specification or manufacturer’s detail specification.
Note 2 to entry: Two connectors with same interface dimensions have the same number of contact seats (or
positions), whereas they may not show the same number of contacts (ways).
3.8
mounting dimensions
dimensions enabling the mounting of a connector

– 12 – IEC 60603-7:2020 © IEC 2020
Note 1 to entry: Examples of mounting dimensions are panel cutout size, size and interaxes of fixing holes or
threads.
Note 2 to entry: The geometry of the mounting interface of Printed Circuit Board connectors to the PCB belongs
to the mounting dimensions: two Printed Circuit Board connectors of the same gender with the same mounting
dimensions share the same pattern and pitch of their contacts.
Note 3 to entry: Two connectors not of the Printed Circuit Board type of the same gender with the same mounting
dimensions may have different interface dimensions.
Note 4 to entry: Two connectors of the same gender with the same mounting dimensions may have different
overall dimensions.
3.9
electrical wiring-related dimensions
dimensions related to the wiring of the connector, i.e. to its number and type of contacts
(ways)
Note 1 to entry: Two connectors of the same gender with the same electrical wiring-related dimensions have the
same number of contacts (ways) or contact positions (seats), the same dimensions of these contacts or contact
positions, the same overall dimensions, the same interface dimensions, and if they are Printed Circuit Board
connectors, the same mounting dimensions.
3.10
electrical, mechanical and climatic performances
levels of electrical, mechanical and climatic performance assigned to a connector in the
relevant detail product specification or manufacturer’s detail specification, therein verified
through dedicated groups of tests
Note 1 to entry: The electrical performance includes signal integrity.
4 Common features and typical connector pair
4.1 View showing typical fixed and free connectors (see Figure 2)

Figure 2 – View showing typical fixed and free connectors

4.2 Mating information
4.2.1 General
Dimensions are given in millimetres. Drawings are shown in third-angle projection. The shape
of connectors may deviate from those given in Figure 2 to Figure 5 as long as the dimensions
specified are not changed. Table 1 through Table 3 list the dimensions for the connectors in
Figure 2 through Figure 5.
– 14 – IEC 60603-7:2020 © IEC 2020
4.2.2 Contacts – mating conditions

Key
1 Female contact of fixed connector The mating information shown can only be achieved with a free
connector with a cable attached.
2 Burrs shall not project above the top of the contact in this area, since it may be a contact area.
3 Optional angle.
4 Preferred contact interface detail.
5 Minimum preferred contact configuration.
6 Configuration with round contact profile.
7 Configuration with rectangular contact profile.

Figure 3 – Contact interface dimensions with terminated free connector

Table 1 – Dimensions for Figure 3
Dimensions in millimetres
Letter Minimum Maximum
A2 0,89 1,45
B2 0,51 0,61
C2 0,03 0,46
D2 2,79
E2 4,11
F2 6,22
G2 10°
H2 0,38
J2 0,38 0,64
K2 5,89 6,15
M2 0,30
N2 0,28
P1 0,45 0,50
P3 0,36 0,50
R2 4,83
Care shall be taken that the fixed connector contacts avoid interference with the
plastic of the free connector.

– 16 – IEC 60603-7:2020 © IEC 2020
4.2.3 Fixed connector
Key
1 Contact zone. Contacts shall be completely within their individual contact zone in the area indicated.
2 0°15’ maximum taper.
3 Section A-A: see Figure 4b).
4 Relief outside of the area defined by dimension AM1 on both sides of the spring contacts in the fixed
connector is permitted.
5 All internal corners in the connector cavity shall be 0,38 mm radius maximum unless otherwise specified.

Figure 4a) – View of contact zone

Key
1 Optional contact rest.
2 Preferred free connector stop.
3 Contacts shown at rest. Contacts shall always be contained inside guide slots. Contacts shall move
freely within their guide slots.
4 This surface need not be planar or coincident with the surface below the locking device as long as
insertion, latching and unlatching of free connectors is not inhibited.
5 Maximum forward extension of contacts below surface AC1 to avoid contact with shields of free
connectors. Applies in the mated state.
6 Projections beyond AL1 dimension shall not prevent finger access to the free connector locking device.

Figure 4b) – Section A-A
Figure 4 – Fixed connector details

– 18 – IEC 60603-7:2020 © IEC 2020
Table 2 – Dimensions for Figure 4
Dimensions in millimetres
Letter Minimum Nominal (ref.) Maximum
A1 1,47
B1  0,71
K1  5,84
S1 11,84 11,94 12,04
T1 3,94 4,19
W1 6,22 6,38
X1 6,68 6,86
Y1 2,40
Z1 2,08
AA1  1,24
AB1  0,38
AC1 6,76 6,86 6,96
AD1  0,13
AH1 1,02
a
TP
AJ1 15°
AK1 8,38 8,66
AL1 1,40
AM1 1,52
AN1  3°30’
AP1 1,27
AS1  0,08
AT1 0,76
SE1  5,80
a
TP indicates true position.
4.2.4 Free connector
Key
1 Full radius permitted on all slots.
2 These dimensions apply to the locations of the contact slots.
3 Applies with locking device depressed.

Figure 5 – Free connector view

– 20 – IEC 60603-7:2020 © IEC 2020
Table 3 – Dimensions for Figure 5
Dimensions in millimetres
Letter Minimum Nominal (ref.) Maximum

a a
a
A2 1,17
a a
a
B2 0,56
S2 11,58 11,68 11,79
T2 3,12 3,38
W2 6,02 6,17
X2 5,77 6,02
Y2  2,34
Z2  2,06
AA2 1,24
AB2 0,38 0,64
AC2 6,50 6,60 6,71
AD2 0,13 0,64
AH2 1,02
AW2  0,51
AX2  1,32
AY2 2,67 2,87
AZ2  0,64
BA2 12,32
BB2 0,38 1,14
BC2 0,51 1,02
BD2 0,51
BE2  1,09
BF2  0,64
BG2 0,38 0,64
BH2 0,13
BJ2 Full radius
BK2  3°30'
BL2  8,36
BM2 14,61 15,88
BN2  8,00
a
See Table 1.
5 Cable terminations and internal connections – Fixed and free connectors
5.1 General
A connector may include multiple terminations between the cable termination and the
separable contact interface. These may include press-in connections of fixed connector
contacts into PCBs for example. All terminations shall meet the relevant termination
requirements.
Free connectors are intended to be terminated to cable to provide connector and cable
assemblies. The connector manufacturer shall provide basic information concerning the type
of conductor (stranded, solid) to which the connector may be applied, and the type of
connection used (solder, insulation displacement, etc.). Specific details concerning wire
gauge size, type and thickness of conductor insulation, size and shape of cordage or cable
sheath, etc., are not intended to be part of this detail specification. Minor variations in a free
connector’s interior details to accommodate differing wire gauge sizes, outer sheaths, etc., do
not require the generation of new free-connector specifications.
5.2 Termination types
5.2.1 Solder terminations
Soldered terminations shall conform to IEC 61760-3.
5.2.2 Solder
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