IEC 60603-7-3:2008

Connectors for electronic equipment - Part 7-3: Detail specification for 8-way, shielded, free and fixed connectors, for data transmissions with frequencies up to 100 MHz

Covers 8-way shielded free and fixed connectors and specifies mechanical and environmental requirements and electrical transmission requirements for frequencies up to 100 MHz. These connectors are typically used as category 5 connectors in class D cabling systems specified in ISO/IEC 11801:2002.

Connecteurs pour équipements électroniques - Partie 7-3: Spécification particulière pour les fiches et les embases blindées à 8 voies pour la transmission de données à des fréquences jusqu'à 100 MHz

Couvre les fiches et les embases blindées à 8 voies et spécifie les exigences mécaniques et environnementales ainsi que les exigences de transmission électrique pour des fréquences jusqu'à 100 MHz. Ces connecteurs sont normalement utilisés comme connecteurs de catégorie 5 dans les systèmes de câblage de classe D spécifiés dans l'ISO/CEI 11801:2002.

General Information

• Status: Published
• Publication Date: 29-Jan-2008
• ICS: 31.220.10 - Plug-and-socket devices. Connectors
• Technical Committee: SC 48B - Electrical connectors
• Drafting Committee: PT CAT6&7 - TC 48/SC 48B/PT CAT6&7
• Current Stage: DELPUB - Deleted Publication
• Start Date: 26-Apr-2010
• Completion Date: 13-Feb-2026

Relations

• Replaces: IEC PAS 60603-7-3:2004 - Connectors for electronic equipment - Part 7-3: Detail specification for 8-way, shielded, free and fixed connectors, for data transmissions with frequencies up to 100 MHz
• Effective Date: 05-Sep-2023
• Revised: IEC 60603-7-3:2010 - Connectors for electronic equipment - Part 7-3: Detail specification for 8-way, shielded, free and fixed connectors, for data transmission with frequencies up to 100 MHz
• Effective Date: 05-Sep-2023

Overview

IEC 60603-7-3:2008 is an international standard developed by the International Electrotechnical Commission (IEC) that specifies detailed requirements for 8-way, shielded connectors used in electronic equipment. These connectors support data transmission frequencies up to 100 MHz and are designed for free (plug) and fixed (receptacle) configurations. Primarily, the standard applies to category 5 connectors within class D cabling systems as defined in ISO/IEC 11801:2002.

The standard encompasses mechanical, environmental, and electrical transmission specifications ensuring reliable, high-performance communication connectivity. By adhering to IEC 60603-7-3, manufacturers and users ensure interoperability, durability, and consistent electrical performance of shielded connectors suitable for network infrastructure and various electronic devices.

Key Topics

• Connector Types
  The standard defines two main connector types: free connectors (plugs) and fixed connectors (receptacles), both with 8 shielded contacts enabling effective interference reduction.

• Mechanical Specifications
  Detailed dimensional requirements, including isometric views and gauges ("go" and "no-go"), assure precise manufacturing tolerances. Mechanical endurance such as insertion and withdrawal forces, locking devices, and coupling effectiveness are also specified.

• Environmental and Climatic Requirements
  The standard classifies climatic categories to ensure connector performance under various environmental conditions, including temperature and humidity.

• Electrical Characteristics
  Electrical performance criteria cover contact resistance, current-carrying capacity, insulation resistance, transfer impedance, and voltage proof. This ensures connectors support stable data transmission up to 100 MHz.

• Transmission Performance
  Metrics such as insertion loss, return loss, near-end crosstalk (NEXT), far-end crosstalk (FEXT), propagation delay, delay skew, and transverse conversion loss are rigorously defined and tested to ensure signal integrity in data communications.

• Termination Methods
  Various cable termination techniques are addressed, including soldering, insulation displacement, crimping, insulation piercing, press-in (compliant pins), and spring clamp terminations, providing flexibility for different installation needs.

• Test Procedures
  The document outlines comprehensive test setups and schedules, including vibration tests, contact resistance measurements, and environmental stress tests to validate connector reliability and compliance.

Applications

IEC 60603-7-3 compliant connectors are widely used in data communication networks and electronic equipment requiring category 5 cabling systems with frequencies up to 100 MHz. Typical applications include:

• Structured cabling installations in enterprise networks
• Industrial automation and control systems
• Telecommunication devices and network equipment
• Shielded Ethernet connectivity ensuring reduced electromagnetic interference (EMI)
• Networking hardware requiring reliable, standardized, and robust interface connectors

By following this standard, product developers and system integrators ensure connectors meet rigorous performance and compatibility criteria, enhancing network stability and data transmission accuracy.

Related Standards

• ISO/IEC 11801:2002
  Defines generic cabling for customer premises including class D cabling systems that align with IEC 60603-7-3 connectors.

• IEC 60603 series
  Broader series covering connectors for electronic equipment, including various contact configurations and performance classes.

• Category 5 cabling standards
  Complemented by IEC 60603-7-3 connectors specified for 100 MHz data transmissions suitable for category 5 applications.

• Electropedia (www.electropedia.org)
  For terminology and definitions related to electronic connectors and cabling technologies used in conjunction with IEC standards.

Conclusion

IEC 60603-7-3:2008 delivers a comprehensive technical specification for 8-way shielded connectors designed for data transmissions up to 100 MHz. Its emphasis on mechanical precision, environmental resilience, and superior electrical performance ensures these connectors are integral to modern structured cabling and communication systems. Compliance with this standard guarantees product interoperability, high signal integrity, and durability, supporting the evolving demands of electronic and networking equipment worldwide.

Standards Content (Sample)

IEC 60603-7-3
Edition 1.0 2008-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Connectors for electronic equipment –
Part 7-3: Detail specification for 8-way, shielded, free and fixed connectors, for
data transmissions with frequencies up to 100 MHz

Connecteurs pour équipements électroniques –
Partie 7-3: Spécification particulière pour les fiches et les embases blindées à
8 voies pour la transmission de données à des fréquences jusqu'à 100 MHz

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IEC 60603-7-3
Edition 1.0 2008-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Connectors for electronic equipment –
Part 7-3: Detail specification for 8-way, shielded, free and fixed connectors, for
data transmissions with frequencies up to 100 MHz

Connecteurs pour équipements électroniques –
Partie 7-3: Spécification particulière pour les fiches et les embases blindées à
8 voies pour la transmission de données à des fréquences jusqu'à 100 MHz

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XC
CODE PRIX
ICS 31.220.10 ISBN 2-8318-9568-5

– 2 – 60603-7-3 © IEC:2008
CONTENTS
FOREWORD.6

INTRODUCTION.8

1 General .9

1.1 Scope.9

1.2 Normative references .9

2 IEC type designation .11

2.1 Terms and definitions .11
3 Common features and isometric view .12
3.1 Isometric view .12
3.2 Mating information.13
3.2.1 General .13
3.2.2 Contacts – Mating conditions.14
3.2.3 Fixed connector.16
3.2.4 Free connector .19
4 Cable terminations and internal connections – Fixed and free connectors .21
4.1 General .21
4.2 Termination types.21
4.2.1 Solder terminations .21
4.2.2 Insulation displacement terminations .21
4.2.3 Crimp terminations .21
4.2.4 Insulation piercing terminations .21
4.2.5 Press-in terminations (Compliant pin) .21
4.2.6 Spring clamp terminations .21
4.2.7 Other types.21
5 Gauges .22
5.1 Fixed connectors .22
5.2 Free connectors .25
6 Characteristics .27
6.1 General .27
6.2 Pin and pair grouping assignment .27
6.3 Classification into climatic category.27

6.4 Electrical characteristics.28
6.4.1 Creepage and clearance distances.28
6.4.2 Voltage proof.28
6.4.3 Current-carrying capacity.28
6.4.4 Initial contact resistance – interface only (between separable fixed
and free connectors).29
6.4.5 Input to output d.c. resistance .29
6.4.6 Input-to-output d.c. resistance unbalance .29
6.4.7 Initial insulation resistance .29
6.4.8 Transfer impedance.30
6.5 Transmission characteristics .30
6.5.1 General .30
6.5.2 Insertion loss.30
6.5.3 Return loss .30

60603-7-3 © IEC:2008 – 3 –
6.5.4 Propagation delay .30

6.5.5 Delay skew.30

6.5.6 NEXT loss .30

6.5.7 Power sum NEXT loss (for information only).31

6.5.8 FEXT loss.31

6.5.9 Power sum FEXT loss (for information only) .31

6.5.10 Transverse conversion loss .31

6.5.11 Transverse conversion transfer loss .31

6.5.12 Coupling attenuation.31

6.6 Mechanical.32

6.6.1 Mechanical operation .32
6.6.2 Effectiveness of connector coupling devices.32
6.6.3 Insertion and withdrawal forces .32
7 Tests and test schedule.32
7.1 General .32
7.2 Arrangement for contact resistance test .33
7.3 Arrangement for vibration test (test phase CP1) .34
7.4 Test procedures and measuring methods .34
7.5 Preconditioning .34
7.6 Wiring and mounting of specimens .35
7.6.1 Wiring.35
7.6.2 Mounting .35
7.7 Test schedules .35
7.7.1 Basic (minimum) test schedule .35
7.7.2 Full test schedule .35

Annex A (normative) Gauging continuity procedure.43
Annex B (normative) Locking-device mechanical operation.47
Annex C (normative) Test-plug requirements .48
Annex D (normative) General requirements for the measurement set-up.59
Annex E (normative) Insertion loss .64
Annex F (normative) Return loss (RL) .66
Annex G (normative) Near-end crosstalk (NEXT) .68
Annex H (normative) Far-end crosstalk (FEXT).70

Annex I (normative) Transfer impedance.72
Annex J (normative) Transverse Conversion Loss (TCL) and Transverse Conversion
Transfer Loss (TCTL).78
Annex K (normative) Termination of balun .81
Annex L (normative) Gauge requirements .83

Figure 1 – Isometric view .12
Figure 2 – Contact interface dimensions with terminated free connector .14
Figure 3a) – View of contact zone.16
Figure 3b) – Section A-A.17
Figure 3 – Fixed connector details .17
Figure 4 – Free connector view.19

– 4 – 60603-7-3 © IEC:2008
Figure 5 – “Go” gauge.22

Figure 6a) – “No-go” gauge width .23

Figure 6b) – “No-go” gauge height .23

Figure 6 – “No-go” gauges .23

Figure 7 – “No-go” gauges .25

Figure 8 – “Go” gauge.26

Figure 9 – Fixed connector pin and pair grouping assignment (front view of connector) .27

Figure 10 – Connector de-rating curve .29

Figure 11 – Arrangement for contact resistance test .33
Figure 12 – Arrangement for vibration test .34
Figure A.1 – Gauge.45
Figure A.2 – Gauge insertion .46
Figure C.1 – De-embedding reference plug.49
Figure C.2 – De-embedding reference jack .51
Figure C.3 – THI3KIT test head interface with baluns attached .56
Figure C.4 – Alternative to item 3.1 in Table C.6.57
Figure C.5 – Back-to-back through calibration.58
Figure D.1 – 180° hybrid used as a balun .60
Figure D.2 – Calibration of reference loads.61
Figure D.3 – Resistor load .62
Figure D.4 – Screened pyramid.63
Figure D.5 – Definition of reference planes .63
Figure E.1 – Calibration .64
Figure E.2 – Measuring set-up .65
Figure G.1 – NEXT measurement for differential and common mode terminations .68
Figure H.1 – FEXT measurement for differential and common mode terminations .70
Figure I.1 – Preparation of test specimen.73
Figure I.2 – Triaxial test set-up .74
Figure I.3 – Impedance matching for R < 50 Ω .75
Figure I.4 – Impedance matching for R >50 Ω .76
Figure J.1a) – TCL measurement.78

Figure J.1b) – TCTL measurement.79
Figure J.1 – TCL and TCTL measurements.79
Figure K.1 – Balanced attenuator for balun centre tap grounded .81
Figure K.2 – Balanced attenuator for balun centre tap open.82

Table 1 – Dimensions for Figure 2 .15
Table 2 – Dimensions for Figure 3 .18
Table 3 – Dimensions for Figure 4 .20
Table 4 – Dimensions for Figures 5 and 6.24
Table 5 – Dimensions for Figure 7 .25
Table 6 – Dimensions for Figure 8 .26
Table 7 – Climatic categories – Selected values .27

60603-7-3 © IEC:2008 – 5 –
Table 8 – Creepage and clearance distances.28

Table 9 – Test group P .36

Table 10 – Test group AP .36

Table 11 – Test group BP .38

Table 12 – Test group CP .39

Table 13 – Test group DP .40

Table 14 – Test group EP .41

Table 15 – Test group FP .42

Table 16 – Test group GP.42
Table A.1 – Dimensions for Figure A.1.44
Table C.1 – Category 6 de-embedded real and imaginary reference jack vectors.53
Table C.2 – Test plug NEXT loss limits .54
Table C.3 –Test plug NEXT loss ranges.54
Table C.4 – Return loss requirements for return loss reference plug .55
Table C.5 – Coaxial termination reference head component list .56
Table C.6 – Coaxial termination reference head, additional parts.57
Table D.1 – Test balun performance characteristics.60
Table F.1 – Uncertainty band of return loss measurement at frequencies below
100 MHz .67
Table F.2 – Uncertainty band of return loss measurement at frequencies above
100 MHz .67

– 6 – 60603-7-3 © IEC:2008
INTERNATIONAL ELECTROTECHNICAL COMMISSION

_____________
CONNECTORS FOR ELECTRONIC EQUIPMENT –

Part 7-3: Detail specification for 8-way, shielded,

free and fixed connectors, for data transmissions

with frequencies up to 100 MHz

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-
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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.
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Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
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5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
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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
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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 60603-7-3 has been prepared by subcommittee 48B: Connectors,
of IEC technical committee 48: Electromechanical components and mechanical structures for
electronic equipment.
This standard cancels and replaces IEC/PAS 60603-7-3 published in 2004. This first edition
constitutes a technical revision.
The text of this standard is based on the following documents:
FDIS Report on voting
48B/1816/FDIS 48B/1835/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.

60603-7-3 © IEC:2008 – 7 –
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts of the 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 publication will remain unchanged until

the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in

the data related to the specific publication. At this date, the publication will be

• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
– 8 – 60603-7-3 © IEC:2008
INTRODUCTION
Applications have emerged which require the use of the interface described in IEC 60603-7:

1996, with certain performance specifications at higher frequencies. The parameters for this

performance include insertion loss, near end crosstalk (NEXT), far end crosstalk (FEXT), and

return loss. Based on application requirements, the specifications for these parameters

always apply to a mated connection of a free (plug) and fixed (outlet) connector. Details for

testing of connectors and test plugs are given in Annex C.

60603-7-3 © IEC:2008 – 9 –
CONNECTORS FOR ELECTRONIC EQUIPMENT –

Part 7-3: Detail specification for 8-way, shielded,

free and fixed connectors, for data transmissions

with frequencies up to 100 MHz

1 General
1.1 Scope
This part of IEC 60603 covers 8-way shielded free and fixed connectors and specifies
mechanical and environmental requirements and electrical transmission requirements for
frequencies up to 100 MHz. These connectors are typically used as category 5 connectors in
class D cabling systems specified in ISO/IEC 11801:2002.
These connectors are intermateable, interoperable, and backward compatible with other
IEC 60603-7 series connectors. While the definition of interoperable is being discussed within
the IEC, “interoperable” in this standard means the following: the fixed and the free connector
are capable of interconnecting with any IEC 60603-7 series connector, and when it is
interconnected, it fully meets all requirements of the lower frequency IEC 60603-7 series
standard.
NOTE Transmission performance categories: in this IEC standard, the term “category”, when used in reference to
transmission performance, refers to those categories defined in ISO/IEC 11801:2002.
1.2 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 60050-581, International Electrotechnical Vocabulary (IEV) – Chapter 581: Electro-
mechanical components for electronic equipment
IEC 60068-1, Environmental testing – Part 1: General and guidance
IEC 60068-2-38, Environmental testing – Part 2: Tests − Test Z/AD: Composite temperature/
humidity cyclic test
IEC 60169-16, Radio-frequency connectors – Part 16: RF coaxial connectors with inner
diameter of outer conductor 7 mm (0,276 in) with screw coupling – Characteristic impedance
50 ohms (75 ohms) (Type N)
IEC 60352 (all parts), Solderless connections
IEC 60352-2, Solderless connections – Part 2: Solderless crimped connections − General
requirements, test methods and practical guidance
IEC 60352-3, Solderless connections – Part 3: Solderless accessible insulation displacement
connections − General requirements, test methods and practical guidance
IEC 60352-4, Solderless connections – Part 4: Solderless non-accessible insulation displace-
ment 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

– 10 – 60603-7-3 © IEC:2008
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 60512-1-100, Connectors for electronic equipment – Tests and measurements –

Part 1-100: General – Applicable publications

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
IEC 61076-1:2006, Connectors with assessed quality, for use in d.c., low-frequency analogue
and in digital high speed data applications – Part 1: Generic 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:
Horizontal floor wiring – Sectional specification
IEC 61156-3, Multicore and symmetrical pair/quad cables for digital communications – Part 3:
Work area wiring – 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 600 MHz – Horizontal
floor wiring – Sectional specification
ISO/IEC 11801:2002, Information technology – Generic cabling for customer premises
ISO 1302, Geometrical Product Specifications (GPS) – Indication of surface texture in
technical product documentation
ITU-T Recommendation G.117, Transmission aspects of unbalance about earth
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
ITU-T Recommendation O.9, Measuring arrangements to assess the degree of unbalance
about earth
EN 50289-1-14, Communication cables – Specification for test methods – Part 1-14: Electrical
test methods − Coupling attenuation or screening attenuation of connecting hardware
———————
This has been replaced by a new edition (2003), but for the purposes of this part of IEC 60603-7, the 2000
edition is cited.
This has been replaced by a new edition (2003), but for the purposes of this part of IEC 60603-7, the 2000
edition is cited.
60603-7-3 © IEC:2008 – 11 –
2 IEC type designation
Connectors, connector bodies and connectors with pre-inserted contacts according to this

standard shall be designated by the following system.

IEC 60603-7-3 L N L L L N N N

Number denoting
performance level (PL)
Reference
1 750 operations
to this
2 2 500 operations
standard
Letters denoting
connector type
Number denoting contact finish
Fixed version A
1 Gold, gold-alloy
Free version C
2 Palladium/nickel
Number denoting variant
Number of contacts
1 Variant 1
Letter denoting type of contact
Female F
Letter denoting type of conductor
Male M
accommodation, or cable
ATinsel wire
Letter denoting type of termination
B Stranded wire
Screw terminal A
C Solid wire
Spring clamp B
D Tinsel or stranded wire
Crimp C
E Stranded or solid wire
Accessible insulation displacement M
F Tinsel, stranded, or solid wire
(IDC)
G Board mounted
Non-accessible insulation N
X Customer specific requirements for
displacement (IDC)
cables
Insulation piercing P
Solder S
Press in connection T
“L” stands for letter
“N” stands for number
EXAMPLE:
IEC 60603-7-3 A8FM-E11-1: Fixed connector having 8 female contacts with IDC termination
for stranded and solid wire, gold plated, meeting performance level 1.
2.1 Terms and definitions
For the purposes of this document, the terms and definitions of IEC 60050(581), IEC 61076-1,
IEC 60512-1, as well as the following, apply.
2.1.1
interchangeability level
Level at which these connectors are intermateable, interoperable and backward compatible
with IEC 60603-7 series connectors

– 12 – 60603-7-3 © IEC:2008
2.1.2
intermateability
Intermateability is ensured by application of the “GO” and “NO-GO” gauge requirements

herein, and adherence to the dimensional requirements within

2.1.3
backward compatibility
Plug or jack which is in compliance with this detail specification, mated with a jack or plug in

compliance with any lower frequency IEC 60603-7 series standard, fully complying with the

requirements of the lower frequency IEC 60603-7 series standard

2.1.4
interoperability
Interoperability of different IEC 60603-7-3 connectors is assured by compliance with all
transmission requirements for the different IEC 60603-7-3 connectors when the fixed
connector is mated with a full range of “test” free connectors, or “test plugs”, as described
herein
3 Common features and isometric view
3.1 Isometric view
IEC  086/05
Figure 1 – Isometric view
60603-7-3 © IEC:2008 – 13 –
3.2 Mating information
3.2.1 General
Dimensions are given in millimetres. Drawings are shown in third-angle projections. The
shape of connectors may deviate from those shapes given in Figures 1 to 4 as long as the

dimensions specified are not influenced.

– 14 – 60603-7-3 © IEC:2008
3.2.2 Contacts – mating conditions

P1
M2
J2
D
B2
View Y
N2
0,15 mm 2
D
H2
Section C-C
Y
C
G2
F2
K2
R2
C
P3
B
A2
D2
E2
D
C2
B2
A
N2
0,15 mm
D
Section C-C
IEC  251/07
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 Minimum preferred contact configuration.
5 Preferred contact configuration.
6 Optional contact configuration.
Figure 2 – Contact interface dimensions with terminated free connector

60603-7-3 © IEC:2008 – 15 –
Table 1 – Dimensions for Figure 2

Maximum Minimum
Letter
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 jack contacts avoid interference with the plastic of the free connector.

– 16 – 60603-7-3 © IEC:2008
3.2.3 Fixed connector
7× AH1
0,05 mm C
B1
0,05 mm X
AH1
X
A
AD1
K1
B
AM1
AB1
A
SF1
T1
0,25 mm C
W1
0,25 mm C
S1
C IEC  2360/07
Key
1 Contact zone: contacts shall be completely within their individual contact zone in the area indicated.
2 0,15 mm maximum taper on both sides.
3 Relief outside of the area defined by dimension AM1 at all four corners in the fixed connector is permitted.
4 Section A-A: see Figure 3b).
Figure 3a) – View of contact zone

60603-7-3 © IEC:2008 – 17 –
AN1
AT1
AT1
B
AC1
AK1
SD1
AS1
Z1
SB1
AA1
AP1
AJ1
A1
Y1 AL1
SA1
SE1
X1
A
IEC  2361/07
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 Dimension to point of shield mating contact.
6 Maximum forward extension of contacts below surface AC1 to avoid contact with shields of free connectors.
Applies in the mated state.
7 Flat surface.
8 Projections beyond AL1 dimension shall not prevent finger access to the free connector locking device.
9 All internal corners in the connector cavity shall be 0,38 mm radius maximum unless otherwise specified.
Figure 3b) – Section A-A
Figure 3 – Fixed connector details

– 18 – 60603-7-3 © IEC:2008
Table 2 – Dimensions for Figure 3

Maximum Minimum Nominal (ref)
Letter
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
SA1 5,31
SB1 2,16
SD1 4,90
SE1 5,80
b
SF1
a
TP indicates true position.
b
Care shall be taken that all screen contacts of the fixed connector always make contact with the screen contacts
of the free connector in worst case condition to ensure reliable performance.

Letter Maximum Suggested minimum
AJ1 15°
AN1 3°30’
60603-7-3 © IEC:2008 – 19 –
3.2.4 Free connector
BA2
S2
C
SA2
AD2
B2 BJ2
BC2
AW2
BH2
AB2
B
B
BB2
BD2
BK2
A2
T2
X2 0,15 mm C
4 W2
SG2
0,15 mm C
Y2
BM2
A
A
SE2
BE2
BF2
BG2
BP2
IEC  2362/07
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.
4 SG2 refers to foremost extension of the screen at the bottom of the plug.
Figure 4 – Free connector view
7× AH2
0,15 mm C
SD2
AH2
Z2
AA2
AX2
SB2
AY2
BL2
AC2
BN2
– 20 – 60603-7-3 © IEC:2008
Table 3 – Dimensions for Figure 4

Maximum Minimum Nominal (ref)
Letter
mm mm mm
a) a)
a)
A2 1,17
a) a)
a)
B2 0,56
S2 11,79 11,58 11,68
T2 3,38 3,12
W2 6,17 6,02
X2 6,02 5,77
Y2 2,34
Z2 2,06
AA2 1,24
AB2 0,64 0,38
AC2 6,71 6,50 6,60
AD2 0,64 0,13
AH2  1,02
AW2 0,51
AX2 1,32
AY2 2,87 2,67
BA2 12,32
BB2 1,14 0,38
BC2 1,02 0,51
BD2 0,51
BE2 1,09
BF2 0,64
BG2 0,64 0,38
BH2  0,13
BL2 8,36
BM2 15,88 14,61
BN2 8,00
SA2 4,22
SB2 1,66
SD2 4,95
SE2 6,85
b
SG2 1,50
a)
See Table 1.
b)
When this dimension is less than 6,85 mm (for further study), and the free connector is mated with a IEC 60603-7-7
fixed connector, utilising switch option 1, there is a possibility that signal conductors 3,4,5,6 of the fixed connector may
make contact with the screen of this free connector.

Letter Maximum Nominal (ref)
BJ2 Full radius
BK2 3°30'
60603-7-3 © IEC:2008 – 21 –
4 Cable terminations and internal connections – fixed and free connectors

4.1 General
A connector may include multiple terminations between the cable termination and the

separable contact interface. These may include press-in connections of jack springs into

PCBs, for example. All terminations shall meet the relevant termination requirements given in

this standard.
If a type of solderless termination which is not covered by any IEC specification is used, the
supplier shall assure its reliability by performing similar tests, and demonstrating a similar
level of performance, to those in the IEC 60352 series.
Free connectors are intended to be terminated to cable to provide connector and cable
assemblies. The connector type designation provides basic terminations concerning the type
of conductor (tinsel, stranded, solid) to which the conductor 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
jacket, etc.,
...