IEC 60603-7-7:2006

Connectors for electronic equipment - Part 7-7: Detail specification for 8-way, shielded, free and fixed connectors, for data transmissions with frequencies up to 600 MHz

Covers 8 way connectors, up to 4 pairs, and specifies mechanical and environmental requirements, and electrical transmission requirements for frequencies up to 600 MHz. These connectors are typically used as category 7 connectors in class F cabling systems specified in IS0/IEC 11801. They are intermateable, interoperable and backward compatible with IEC 60603-7-X series connectors.

General Information

• Status: Published
• Publication Date: 21-Jun-2006
• ICS: 31.220.10 - Plug-and-socket devices. Connectors
• Technical Committee: SC 48B - Electrical connectors
• Current Stage: DELPUB - Deleted Publication
• Start Date: 31-May-2010
• Completion Date: 13-Feb-2026

Relations

• Revises: IEC 60603-7-7:2002 - Connectors for electronic equipment - Part 7-7: Detail specification for 8-way, shielded, free and fixed connectors, for data transmission with frequencies up to 600 MHz (category 7, shielded)
• Effective Date: 05-Sep-2023
• Revised: IEC 60603-7-7:2010 - Connectors for electronic equipment - Part 7-7: Detail specification for 8-way, shielded, free and fixed connectors for data transmission with frequencies up to 600 MHz
• Effective Date: 05-Sep-2023

Overview

IEC 60603-7-7:2006 is an International Electrotechnical Commission (IEC) detail specification for 8‑way, shielded, free and fixed connectors intended for data transmissions with frequencies up to 600 MHz. It covers connectors with up to 4 pairs (8 contacts) and defines mechanical, environmental and electrical transmission requirements. These connectors are typically used as Category 7 (Class F) connectors in ISO/IEC 11801 cabling systems and are intermateable, interoperable and backward compatible with the IEC 60603-7‑X connector family.

Key topics and technical requirements

The standard specifies technical content across mechanical, electrical and test domains, including:

• Connector geometry and dimensional information: isometric and physical interface views for free and fixed connectors; gauging requirements for “go” and “no‑go” checks.
• Termination types: referenced terminations such as insulation displacement (IDC), crimp, insulation‑piercing, compliant pin (press‑in), spring clamp and solder.
• Shielding and grounding: requirements for overall connector screening to support shielded twisted‑pair performance up to 600 MHz.
• Electrical/transmission characteristics: key parameters and measurement methods including insertion loss, return loss, NEXT (near‑end crosstalk), FEXT (far‑end crosstalk), transfer impedance, propagation delay and delay skew.
• Mechanical and environmental requirements: mating cycles, insertion/withdrawal forces, climatic category and mechanical operation tests.
• Test methods and schedules: detailed procedures for preconditioning, contact resistance measurement, dynamic stress testing and high‑frequency interoperability testing (normative annexes).
• Gauging and interoperability: normative annexes for precision test fixtures and gauging continuity to ensure intermateability and consistent performance.

Applications and users

IEC 60603-7-7 is used by:

• Connector and cable manufacturers designing shielded 8‑way RJ‑style or proprietary connectors for high‑speed networks.
• Cabling system designers and integrators implementing Category 7 / Class F shielded cabling for data centers, enterprise LANs and industrial Ethernet.
• OEMs and equipment manufacturers specifying panel‑mount fixed connectors or free/hanging couplers.
• Test laboratories and certification bodies performing transmission testing (insertion loss, NEXT, transfer impedance) and interoperability validation.
• Standards and compliance teams ensuring backward compatibility within the IEC 60603‑7 family.

Related standards

• IEC 60603‑7‑X series (intermateable connector family)
• ISO/IEC 11801 (generic cabling - Class F / Category 7 cabling systems)

This standard is essential for anyone specifying or validating shielded 8‑way connectors for up to 600 MHz where reliable high‑frequency data transmission and mechanical interoperability are required.

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD 60603-7-7
Second edition
2006-06
Connectors for electronic equipment –
Part 7-7:
Detail specification for 8-way, shielded,
free and fixed connectors, for data
transmissions with frequencies up to 600 MHz

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.

Consolidated editions
The IEC is now publishing consolidated versions of its publications. For example,

edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the

base publication incorporating amendment 1 and the base publication incorporating

amendments 1 and 2.
Further information on IEC publications
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology. Information relating to
this publication, including its validity, is available in the IEC Catalogue of
publications (see below) in addition to new editions, amendments and corrigenda.
Information on the subjects under consideration and work in progress undertaken
by the technical committee which has prepared this publication, as well as the list
of publications issued, is also available from the following:
• IEC Web Site (www.iec.ch)
• Catalogue of IEC publications
The on-line catalogue on the IEC web site (www.iec.ch/searchpub) enables you to
search by a variety of criteria including text searches, technical committees
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INTERNATIONAL IEC
STANDARD 60603-7-7
Second edition
2006-06
Connectors for electronic equipment –
Part 7-7:
Detail specification for 8-way, shielded,
free and fixed connectors, for data
transmissions with frequencies up to 600 MHz

 IEC 2006  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
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale XC
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – 60603-7-7  IEC:2006(E)
CONTENTS
FOREWORD.6

INTRODUCTION.8

1 General .10

1.1 Scope.10

1.2 Normative references .10

2 Technical information.11

2.1 Terms and definitions .11
2.2 Information on application.11
2.2.1 Transmission performance categories.12
2.2.2 Complete connectors (pairs) .12
2.2.3 Interchangeability level.12
2.2.4 Shielding/grounding .13
2.2.5 Terminations.13
2.3 IEC type designation.13
3 Dimensional information .15
3.1 General .15
3.2 Isometric view .15
3.3 Common features .16
3.4 Engagement (mating) information .16
3.5 Fixed connectors .18
3.6 Free connectors .21
4 Terminations.23
4.1 Referenced termination types .23
4.1.1 Insulation displacement terminations.23
4.1.2 Crimp terminations.23
4.1.3 Insulation piercing terminations.23
4.1.4 Compliant pin (press-in).23
4.1.5 Spring clamp terminations.23
4.1.6 Non-referenced termination types .23
4.1.7 Solder terminations.24
4.2 Switch function .24

4.2.1 Basic switch function .24
4.2.2 Additional switch function.24
4.3 Accessories.24
4.4 Mounting information for fixed connectors .24
4.4.1 Hole pattern on printed boards .24
4.4.2 Mounting on panels.24
4.5 Mounting information for free connectors .24
5 Gauges.24
5.1 Fixed connectors .24
5.2 Free connectors .29
5.3 Probes.33
5.4 Contact resistance gauge .33
5.5 Test panel (for voltage proof test) .33

60603-7-7  IEC:2006(E) – 3 –
6 Characteristics.33

6.1 General .33

6.2 Pin and pair grouping assignment .34

6.3 Climatic category.35

6.4 Electrical characteristics .35

6.4.1 Creepage and clearance distance .35

6.4.2 Voltage proof .36

6.4.3 Current-carrying capacity .36

6.4.4 Initial contact resistance .37

6.4.5 Input to output d.c. resistance .37
6.4.6 Input to output d.c. resistance unbalance .37
6.4.7 Insulation resistance .37
6.4.8 Transfer impedance.38
6.5 Transmission characteristics.38
6.5.1 Insertion loss .38
6.5.2 Return loss .38
6.5.3 Propagation delay .39
6.5.4 Delay skew .39
6.5.5 NEXT loss .39
6.5.6 Power sum NEXT loss (for information only) .39
6.5.7 FEXT loss.39
6.5.8 Power sum FEXT loss (for information only).39
6.5.9 Transverse conversion loss.40
6.5.10 Transverse conversion transfer loss.40
6.5.11 Coupling attenuation .40
6.6 Mechanical characteristics.40
6.6.1 Mechanical operation .40
6.6.2 Effectiveness of connector coupling devices.41
6.6.3 Insertion and withdrawal forces .41
7 Tests and test schedule .41
7.1 General .41
7.2 Test procedures and measuring methods.41
7.3 Preconditioning.41
7.4 Wiring and mounting of specimens .42
7.4.1 Wiring.42

7.4.2 Mounting.42
7.5 Contact resistance measurement arrangement and procedure .42
7.5.1 Arrangement for contact resistance measurement.42
7.5.2 Test procedure for contact resistance measurement .43
7.6 Arrangement for dynamic stress tests (test phase CP1) .43
7.7 Test schedules .43
7.7.1 Basic (minimum) test schedule.44
7.7.2 Full test schedule.44

Annex A (normative) Gauging continuity procedure.53
Annex B (normative) Locking device mechanical operation – Test procedure and
requirements.56
Annex C (normative) High frequency (category 7) transmission interoperability testing .57

– 4 – 60603-7-7  IEC:2006(E)
Annex D (normative) General requirements for the measurement set-up.59

Annex E (normative) Insertion loss .64

Annex F (normative) Return loss .66

Annex G (normative) Near end cross talk (NEXT) .68

Annex H (normative) Far end cross talk (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) Gauging requirements .82

Figure 1 – Isometric view, example fixed and free connector, free connector shown with
both switch positions .15
Figure 2 – Contact interface dimensions with terminated free connector .16
Figure 3 – Physical interface, fixed connector, front view .18
Figure 4 – Physical interface, fixed connector, side view.19
Figure 5 – Physical interface, free connector .21
Figure 6 – “Go” gauge .25
Figure 7 – Fixed connector additional go gauge.25
Figure 8 – “No-go” gauge width .26
Figure 9 – “No-go” gauge height.26
Figure 10 – Fixed connector additional no-go gauges .27
Figure 11 – “No-go” gauges.29
Figure 12 – Free connector additional no-go gauges.30
Figure 13 – “Go” gauge .31
Figure 14 – Free connector additional go gauges.32
Figure 15 – Fixed connector pin and pair grouping assignment (front view of connector) .34
Figure 16 – Basic switch function .34
Figure 17 – Additional switch function.35
Figure 18 – Connector de-rating curve.36
Figure 19 – Arrangement for contact resistance measurement.42
Figure 20 – Arrangement for dynamic stress tests .43

Figure A.1 – Gauge.54
Figure A.2 – Gauge insertion.55
Figure C.1 – Free connector precision test fixture.57
Figure C.2 – Fixed connector precision test fixture .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

60603-7-7  IEC:2006(E) – 5 –
Figure G.1 – NEXT measurement differential and common mode terminations.68

Figure H.1 – FEXT measurement 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.1 – TCL measurement .78

Figure J.2 – TCTL measurement .79

Figure K.1 – Balanced attenuator for balun centre tap grounded .81
Figure K.2 – Balanced attenuator for balun centre tap open .81

Table 1 – Physical interface, contacts interface .17
Table 2 – Fixed connector common dimensions.20
Table 3 – Common dimensions – free connector .22
Table 4 – Fixed connector gauge dimensions .28
Table 5 – Fixed connector, additional, gauge dimensions .28
Table 6 – Free connector NO-GO gauge dimensions .31
Table 7 – Free connector GO gauges dimensions.32
Table 8 – Free connector additional gauges dimensions .33
Table 9 – Climatic categories – selected values.35
Table 10 – Minimum distances .36
Table 11 – Test group P.44
Table 12 – Test group AP.45
Table 13 – Test group BP.47
Table 14 – Test group CP .48
Table 15 – Test group DP .49
Table 16 – Test group EP.50
Table 17 – Test group FP.51
Table 18 – Test group GP .52
Table A.1 – Continuity gauge dimensions .55
Table D.1 – Test balun performance characteristics .61

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 – 60603-7-7  IEC:2006(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION

––––––––––––
CONNECTORS FOR ELECTRONIC EQUIPMENT –

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

connectors, for data transmissions with frequencies up to 600 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-
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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.
The International Electrotechnical Commission (IEC) draws attention to the fact that it is claimed that compliance
with this document may involve the use of a patent concerning the switch given in 2.2.2.
The IEC takes no position concerning the evidence, validity and scope of this patent right.

The holder of this patent right has assured the IEC that he/she is willing to negotiate licences under reasonable and
non-discriminatory terms and conditions with applicants throughout the world. In this respect, the statement of the
holder of this patent right is registered with IEC. Information may be obtained from:
Nexans
16, rue de Monceau
75008 Paris
France
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights
other than those identified above. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60603-7-7 has been prepared by subcommittee 48B: Connectors, of
IEC technical committee 48: Electromechanical components and mechanical structures for
electronic equipment.
This second edition cancels and replaces the first edition published in 2002. This edition
constitutes a technical revision.

60603-7-7  IEC:2006(E) – 7 –
The following changes to the first edition have been made in this second edition:

• Many minor detail changes concerning the harmonization of this document, its

specifications and its test procedures with those contained in the other IEC 60603-7 series

standards.
• Significant performance improvements have been made to insertion loss and return loss,

now specified to 1 000 MHz, for special applications (ISO/IEC 15018).

The text of this standard is based on the following documents:

FDIS Report on voting
48B/1664/FDIS 48B/1691/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.
A list of all parts of IEC 60603 series, under the general title Connectors for frequencies below
3 MHz for use with printed boards, 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.
A bilingual version of this publication may be issued at a later date.

– 8 – 60603-7-7  IEC:2006(E)
INTRODUCTION
This detail specification describes connectors according to IEC 60603-7 series connectors

requirements.
This detail specification describes connectors that are similar to and backward compatible with

IEC 60603-7 series connectors. Backward compatibility definition and requirements are given

in 2.2.
The complete requirements for the connectors described herein correspond to this detail

specification and the current issues of IEC 60603-7 series, which are referenced herein

accordingly.
60603-7-7  IEC:2006(E) – 9 –
CONNECTORS FOR ELECTRONIC EQUIPMENT –

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

connectors, for data transmissions with frequencies up to 600 MHz

IEC SC 48B: LF connectors IEC 60603-7-7

Specification available from:
IEC Central Office or the addresses shown on the inside cover.

Detail specification for two-part
cable to cable connector used in:

- high speed
communications
applications up to 600 MHz
- 4 balanced contact pairs (8
contacts)
- compatible with
IEC 60603-7 series
connectors
- intended for inside-building
cabling systems
Typical construction is for cable
mount for use in communication
cabling systems
Performance level(s): 1, 2
Assessment level(s): not applicable

IEC  1068/06
Reference data: not applicable

Information on the availability of components qualified to this detail specification is not covered.

– 10 – 60603-7-7  IEC:2006(E)

1 General
1.1 Scope
This part of IEC 60603, which is part of the IEC 60603-7 series, covers 8 way connectors, up to

4 pairs, and specifies mechanical and environmental requirements, and electrical transmission

requirements for frequencies up to 600 MHz. These connectors are typically used as

category 7 connectors in class F cabling systems specified in IS0/IEC 11801:2002.

The connectors are intermateable with IEC 60603-7-X series connectors.

The connectors are interoperable with IEC 60603-7-X series connectors.
The connectors are backward compatible with IEC 60603-7-X series connectors.
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: R.F. 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 60352-2, 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
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
___________
ISO/IEC 11801 contains various ‘category’ designations corresponding to various frequency ranges.
Intermateability definition and requirements are given in 2.2.
Interoperability definition and requirements are given in 2.2.
Backward compatibility definition and requirements are given in 2.2.

60603-7-7  IEC:2006(E) – 11 –

IEC 60512-1-100, Connectors for electronic equipment – Tests and measurements – Part 1-

100: General – Applicable publications

IEC 60603-1, Connectors for frequencies below 3 MHz for use with printed boards – Part 1:

Generic specification – General requirements and guide for the preparation of detail

specifications, with assessed quality

IEC 60603-7, Connectors for frequencies below 3 MHz for use with printed boards – Part 7:

Detail specification for connectors, 8-way, including fixed and free connectors with common

mating features
IEC 60603-7-5, Connectors for electronic equipment – Part 7-5: Detail specification for 8-way,

shielded, free and fixed connectors, for data transmissions with frequencies up to 250 MHz
IEC 60664-1, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, requirements and tests
IEC 61076-1, Connectors for electronic equipment – Product requirements – Part 1: Generic
specification
IEC 61156 (all parts), Multicore and symmetrical pair/quad cables for digital communications
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 G.117, Transmission aspects of unbalance about earth
ITU-T K.20, Resistibility of telecommunication equipment installed in a telecommunications
centre to overvoltages and overcurrents
ITU-T K.44, Resistibility tests for telecommunication equipment exposed to overvoltages and
overcurrents – Basic recommendation
ITU-T O.9, Measuring arrangements to assess the degree of unbalance about earth
EN 50289-1-14, Communication Cables – Specifications for Test Methods – Part 1-14:
Electrical Test Methods – Coupling attenuation or screening attenuation of connecting
hardware
2 Technical information
This detail specification covers connectors intended for use in inside-building communication
cabling systems.
2.1 Terms and definitions
For the purposes of this part of IEC 60603, the terms and definitions given in 2.1 of
IEC 61076-1 and IEC 60050(581) apply. Some applicable terms are also covered in
IEC 60512-1.
2.2 Information on application
These connectors are interoperable with lower frequency or “category” IEC 60603-7 series
connectors.
___________
To be published.
– 12 – 60603-7-7  IEC:2006(E)

2.2.1 Transmission performance categories

In this detail specification, the term “category”, when used in reference to transmission

performance, refers to those categories defined by ISO/IEC 11801:2002.

2.2.2 Complete connectors (pairs)

The complete connectors engage a total of 8 contacts.

The IEC 60603-7-7 connector includes the 8 contacts (1,2,3,4,5,6,7,8) of a standard
IEC 60603-7 series connector. In addition, the IEC 60603-7-7 connector includes 4 alternative
contacts (6’,3’,4’,5’) located on the opposite side to the original contacts of a basic
IEC 60603-7 series connector.
A switch is employed within the connectors to engage transmission paths between 4 pairs of
terminations and the respective 4 out of 6 pairs of contacts, which operate above or below
250 MHz, see 4.2.
Switch operation is implemented by means of moving switch actuator protrusions on the free
connector (see 2.2.2.1 and 2.2.2.2).
2.2.2.1 Fixed connectors
IEC 60603-7-7 fixed connectors include a rear switch actuator and side channels.
These features accommodate the switch actuator protrusions on IEC 60603-7-7 free
connectors.
The fixed connector (rear) switch actuator is operated by the free connector front switch
actuator protrusion placed in the extended position.
2.2.2.2 Free connectors
IEC 60603-7-7 free connectors include front and side switch actuator protrusions.
The free connector front switch actuator protrusion, when placed in the extended position,
operates the fixed connector switch actuator.
The free connector side switch actuator protrusions operate the free connector switch. The
absence of fixed connector side channels (as in lower frequency or “category” IEC 60603-7-X
series fixed connectors) cause the extended free connector switch actuator protrusions to
move into the retracted position upon insertion.

NOTE A free connector with fixed protrusions, which is not backward compatible with IEC 60603-7 series
connectors, but is intermateable and interoperable with IEC 60603-7-7 fixed connectors, is specified in
IEC 61076-3-110 .
2.2.3 Interchangeability level
These connectors are intermateable, interoperable and backward compatible with IEC 60603-7
series connectors.
Interoperability of a IEC 60603-7-7 connector with a lower frequency IEC 60603-7 series
connector is assured by compliance with all transmission requirements of the lower frequency
IEC 60603-7 series connector when the fixed connector is mated with a full range of “test” free
connectors, or “test plugs”, as described in the lower frequency IEC 60603-7 series connector.
___________
Under consideration.
60603-7-7  IEC:2006(E) – 13 –

2.2.3.1 Intermateability
Intermateability is ensured by applying the “GO” and “NO-GO” gauge requirements herein, and

adherence to dimensional requirements herein.

2.2.3.2 Interoperability
Interoperability of different IEC 60603-7-7 connectors is assured by compliance with all
transmission requirements when the connector is mated with the respective “test” connector as
described in Annex C.
Interoperability of a IEC 60603-7-7 connector with a lower frequency IEC 60603-7 series
connector is assured by compliance with all transmission requirements of the lower frequency
IEC 60603-7 series connector when the fixed connector is mated with a full range of “test” free
connectors, or “test plugs”, as described in the lower frequency IEC 60603-7 series connector.
2.2.3.3 Backward Compatibility
The backward compatibility requirement ensures that a 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 connector, shall fully comply with the requirements of the lower frequency
IEC 60603-7 series connector.
2.2.4 Shielding/grounding
Shielding features form an integral part of these connectors and they are specified herein.
2.2.5 Terminations
These cable connectors are terminated to the signal line and screen of the cable with specified
terminations.
Fixed and free connector terminations are specified in Clause 4 and shall conform to the
requirements of Clause 6.
Screen terminations shall conform to the requirements of Clause 6.
2.3 IEC type designation
Connectors, connector bodies and connectors with pre-inserted contacts according to this
detail specification shall be designated by the following system:

– 14 – 60603-7-7  IEC:2006(E)

IEC 60603-7-7 L N L L L N N N
Reference to
this standard
Number denoting
performance level (PL)
Letter denoting the 1 750 operations

connector type
2 2500 operations
Fixed version A
Free version C
Number denoting variant
1 Variant 1
Number of contacts
Eight 8
Number denoting contact finish
Letter denoting type of contac t
1 Gold, gold-alloy
Female F
2 Palladium/nickel
Male M
Letter denoting type of termination  Letter denoting type of conductor
accomodation, or cable
Crimp C
Accessible insulation M B Stranded wire
displacement (IDC)
C Solid wire
Non-accessible insulation N E Stranded or solid wire
displacement (IDC)
X Customer specific requirements
for cables
Insulation piercing (IPC) P
Solder S G Board mounted
Spring Clamp B A Tinsel wire
Press-in connection T D Tinsel or stranded wire

Screw terminal A F Tinsel, stranded, or solid wire

NOTE “L” stands for letter.
“N” stands for number.
Example:
IEC 60603-7-7 A8FM-E111: Fixed shielded connector, having 8 female contacts with
accessible IDC contacts, for stranded or solid wires, gold plated, meeting performance level 1.

60603-7-7  IEC:2006(E) – 15 –

3 Dimensional information
Common characteristics are given herein for fixed connectors and free connectors.

3.1 General
The shape of the connectors may deviate from those given in the following drawings as long as

the specified dimensions are not influenced.

Dimensions are given in millimetres.

Drawings are shown in first angle projection unless specifically stated otherwise in the figure.
3.2 Isometric view
See Figure 1.
IEC  1069/06
NOTE The free connector protrusions move together, between the extended position and the retracted position, to
activate the switch within the free connector, see 2.2.
Figure 1 – Isometric view, example fixed and free connector,
free connector shown with both switch positions

– 16 – 60603-7-7  IEC:2006(E)

3.3 Common features
These connectors have common features concerning the arrangement of the contacts, mating

information, and the coupling device.

These connectors have the same common features as the IEC 60603-7 series connectors.

Mating alignment is controlled by a vertical and horizontal reference position and the centering

of the coupling device (latch).

3.4 Engagement (mating) information

Common dimensions are given in Figure 2 and in Table 1.
Care shall be taken that contacts avoid interference with the plastic of the free connector.
The mating information shown can only be achieved with a free connector with a cable
attached.
C
P1
H2
G2
D
N2
C
0,15 mm
D
0,006 in D
B2
B
D
G2
P3
A2
C2
D2
A
J2
E2
N2
0,15 mm
D
0,006 in
D
B2
D
D IEC  1070/06
NOTE View D: preferred contact interface detail.
Figure 2 – Contact interface dimensions with terminated free connector
K2
M2
R2
CK2
CR2
P2
60603-7-7  IEC:2006(E) – 17 –

Table 1 – Physical interface, contacts interface

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
c
H2 0,38
J2 0,64 0,38
K2 6,15 5,89
d
M2 0,30
N2 0,28
a
P1 0,50 0,45
b
P3 0,50 0,36
R2 4,83
CK2 0,60 0,50
CR2 1,70
o
G2 (Angle) 10
a
P1: preferred fixed connector contact configuration.

b
P3: optional fixed connector contact configuration.

c
H2: Burrs shall not project above top of contact in this area, since it
may be a contact area.
d
M2: Minimum preferred contact configuration.

– 18 – 60603-7-7  IEC:2006(E)

3.5 Fixed connectors
Common dimensions are given in Figure 3 and Figure 4 and in Table 2.

All internal corners in the connector cavity shall have a maximum radius of 0,38 mm unless

otherwise specified.
Contacts are sh
...