IEC 61076-3-122:2021
(Main)Connectors for electrical and electronic equipment - Product requirements - Part 3-122: Detail specification for 8-way, shielded, free and fixed connectors for I/O and data transmission with frequencies up to 500 MHz and current-carrying capacity in industrial environments
Connectors for electrical and electronic equipment - Product requirements - Part 3-122: Detail specification for 8-way, shielded, free and fixed connectors for I/O and data transmission with frequencies up to 500 MHz and current-carrying capacity in industrial environments
IEC 61076-3-122:2021 covers 8-way, shielded, free and fixed rectangular connectors for I/O and data transmission with frequencies up to 500 MHz. It is intended to specify the common dimensions, mechanical, electrical and environmental characteristics and tests for this family of connectors.
Connectors complying with this document provide an ingress protection level of IP20; however, they are particularly suited for industrial environments with a high level of vibration.
There are two classes of connectors defined in this document, indicated by "class A" and "class B" which are distinguished by some electrical and mechanical characteristics to meet the particular sets of requirements of some industrial applications.
Class A meets the requirements defined in Ed.1 of this document.
With the two classes A and B, the two codings Type I and II, and the two sets of transmission requirements according to the component categories Cat 5 and Cat 6A as defined in ISO/IEC 11801-1, this document specifies 2 × 2 × 2 = 8 variants.
All connectors covered by this document feature a current-carrying capacity beyond the minimum requirement of 0,75 A per pin for an ambient temperature of 60° C as defined in ISO/IEC 11801 1.
This second edition cancels and replaces the first edition published in 2017. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Title modified.
b) Introduction of two sets of requirements for connectors of "class A" and "class B" where class A matches the requirements defined in the previous edition.
c) Definition of new performance requirements for frequencies up to 500 MHz in addition to the performance requirements up to 100 MHz provided with the previous edition.
d) Re-structuring to reflect the commonalities of and differences between connector Type I and Type II.
e) Revision of drawings to clarify some dimensions.
e) The derating diagram has been corrected to align it with the upper limiting temperature in the climatic category, with no reduction of performance for the target applications.
Connecteurs pour équipements électriques et électroniques - Exigences de produit - Partie 3-122: Spécification particulière pour les fiches et les embases écrantées à 8 voies pour les entrées/sorties et la transmission des données à des fréquences jusqu'à 500 MHz avec courant limite admissible dans des environnements industriels
IEC 61076-3-122:2021 couvre les connecteurs rectangulaires à 8 sens, blindés, libres et fixes pour i/o et transmission de données avec des fréquences jusqu’à 500 MHz. Il est destiné à préciser les dimensions communes, les caractéristiques mécaniques, électriques et environnementales et les tests pour cette famille de connecteurs.
Les connecteurs qui se conforment à ce document offrent un niveau de protection contre les entrées d’IP20; cependant, ils sont particulièrement adaptés aux environnements industriels avec un niveau élevé de vibration.
Il existe deux catégories de connecteurs définies dans ce document, indiquées par « classe A » et « classe B » qui se distinguent par certaines caractéristiques électriques et mécaniques pour répondre aux exigences particulières de certaines applications industrielles.
La classe A répond aux exigences définies dans l’Ed.1 de ce document.
Avec les deux catégories A et B, les deux codages de type I et II, et les deux ensembles d’exigences de transmission selon les catégories de composants Cat 5 et Cat 6A telles que définies dans ISO/IEC 11801-1, ce document spécifie 2 × 2 × 2 = 8 variantes.
Tous les connecteurs couverts par ce document disposent d’une capacité de transport de courant au-delà de l’exigence minimale de 0,75 A par goupille pour une température ambiante de 60°C telle que définie dans ISO/IEC 11801 1.
Cette deuxième édition annule et remplace la première édition publiée en 2017. Cette édition constitue une révision technique.
Cette édition comprend les changements techniques importants suivants par rapport à l’édition précédente :
a) Titre modifié.
b) Introduction de deux ensembles d’exigences pour les connecteurs de « classe A » et de « classe B » où la classe A correspond aux exigences définies dans l’édition précédente.
c) Définition des nouvelles exigences de performance pour les fréquences jusqu’à 500 MHz en plus des exigences de performance jusqu’à 100 MHz fournies avec l’édition précédente.
d) Restructuration pour refléter les points communs et les différences entre le connecteur de type I et le type II.
e) Révision des dessins pour clarifier certaines dimensions.
e) Le diagramme de dentation a été corrigé pour l’aligner sur la température limite supérieure dans la catégorie climatique, sans réduction des performances pour les applications cibles.
General Information
Relations
Standards Content (Sample)
IEC 61076-3-122 ®
Edition 2.0 2021-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Connectors for electrical and electronic equipment – Product requirements –
Part 3-122: Detail specification for 8-way, shielded, free and fixed connectors for
I/O and data transmission with frequencies up to 500 MHz and current-carrying
capacity in industrial environments
Connecteurs pour équipements électriques et électroniques – Exigences de
produit –
Partie 3-122: Spécification particulière pour les fiches et les embases écrantées
à 8 voies pour les entrées/sorties et la transmission des données à des
fréquences jusqu’à 500 MHz avec courant limite admissible dans des
environnements industriels
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IEC 61076-3-122 ®
Edition 2.0 2021-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Connectors for electrical and electronic equipment – Product requirements –
Part 3-122: Detail specification for 8-way, shielded, free and fixed connectors for
I/O and data transmission with frequencies up to 500 MHz and current-carrying
capacity in industrial environments
Connecteurs pour équipements électriques et électroniques – Exigences de
produit –
Partie 3-122: Spécification particulière pour les fiches et les embases écrantées
à 8 voies pour les entrées/sorties et la transmission des données à des
fréquences jusqu’à 500 MHz avec courant limite admissible dans des
environnements industriels
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.220.10 ISBN 978-2-8322-9632-5
– 2 – IEC 61076-3-122:2021 © IEC 2021
CONTENTS
FOREWORD . 4
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 9
4 Mating information . 9
4.1 General . 9
4.2 Contacts – Mating conditions . 11
4.3 Fixed connectors Type I and II . 11
4.4 Free connectors Type I and II . 14
5 Characteristics . 15
5.1 General . 15
5.2 Pin and pair grouping assignment . 16
5.3 Classification into climatic category . 17
5.4 Electrical characteristics . 17
5.4.1 Voltage proof . 17
5.4.2 Voltage rating . 17
5.4.3 Creepage and clearance distances . 17
5.4.4 Current-temperature derating . 18
5.4.5 Insulation resistance . 19
5.5 Mechanical characteristics . 19
5.5.1 Mechanical operation . 19
5.5.2 Insertion and withdrawal forces . 19
5.5.3 Vibration, sinusoidal . 19
5.5.4 Shock . 19
5.6 Transmission performance . 20
5.6.1 General . 20
5.6.2 Insertion loss . 20
5.6.3 Return loss . 20
5.6.4 Near-end cross talk (NEXT) . 20
5.6.5 Far-end cross talk (FEXT) . 21
5.6.6 Transverse conversion loss (TCL) . 21
5.6.7 Transverse conversion transfer loss (TCTL) . 21
5.6.8 Transfer impedance . 21
5.6.9 Propagation delay . 21
5.6.10 Delay skew . 22
6 Tests and test schedule . 22
6.1 General . 22
6.2 Arrangement for input-to-output resistance test . 22
6.3 Arrangement for vibration and shock test (test phase EP1) . 23
6.4 Test procedures and measuring methods . 24
6.5 Preconditioning . 24
6.6 Test schedules . 24
6.6.1 General . 24
6.6.2 Basic (minimum) test schedule . 24
6.6.3 Full test schedule . 24
6.7 Mounting of specimens . 31
Bibliography . 32
Figure 1 – Product overview . 6
Figure 2 – Contact interface of a free male connector (right side) mated with a fixed
female connector (left side) . 11
Figure 3 – Fixed connectors . 12
Figure 4 – Free connectors Type I (left) and Type II (right) . 14
Figure 5 – Fixed connector pin and pair grouping assignment for Type I and Type II,
mating face view of connector . 16
Figure 6 – Connector derating curve . 18
Figure 7 – Arrangement for input-to-output resistance test . 23
Figure 8 – Arrangement for vibration test . 23
Table 1 – Mating faces of the individual connector styles . 10
Table 2 – Dimensions for Figure 2 and Figure 3 . 13
Table 3 – Dimensions for Figure 4 . 15
Table 4 – Pin and pair assignment for 10/100 Mbps Ethernet . 16
Table 5 – Pin and pair assignment for 1/10 Gbps Ethernet . 16
Table 6 – Climatic category. 17
Table 7 – Voltage proof . 17
Table 8 – Creepage and clearance distances of the mating interface . 18
Table 9 – Vibration, sinusoidal . 19
Table 10 – Shock . 19
Table 11 – Test group P . 25
Table 12 – Test group AP . 26
Table 13 – Test group BP . 27
Table 14 – Test group CP . 29
Table 15 – Test group DP . 30
Table 16 – Test group EP . 30
Table 17 – Test group FP . 31
– 4 – IEC 61076-3-122:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONNECTORS FOR ELECTRICAL AND ELECTRONIC EQUIPMENT –
PRODUCT REQUIREMENTS –
Part 3-122: Detail specification for 8-way, shielded, free and fixed
connectors for I/O and data transmission with frequencies up to
500 MHz and current-carrying capacity in industrial environments
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,
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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
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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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
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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
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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 61076-3-122 has been prepared by subcommittee 48B: Electrical
connectors, of IEC technical committee 48: Electrical connectors and mechanical structures for
electrical and electronic equipment.
This second edition cancels and replaces the first edition published in 2017. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Title modified.
b) Introduction of two sets of requirements for connectors of "class A" and "class B" where
class A matches the requirements defined in the previous edition.
c) Definition of new performance requirements for frequencies up to 500 MHz in addition to
the performance requirements up to 100 MHz provided with the previous edition.
d) Re-structuring to reflect the commonalities of and differences between connector Type I and
Type II.
e) Revision of drawings to clarify some dimensions.
e) The derating diagram has been corrected to align it with the upper limiting temperature in
the climatic category, with no reduction of performance for the target applications.
The text of this International Standard is based on the following documents:
FDIS Report on voting
48B/2864/FDIS 48B/2877/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 in the IEC 61076 series, published under the general title Connectors for
electrical and electronic equipment – Product requirements, 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.
– 6 – IEC 61076-3-122:2021 © IEC 2021
Subcommittee 48B: Electrical connectors IEC 61076-3-122 Ed. 2
Detail specification for
8-way, shielded, free
and fixed connectors
for I/O and data
transmission with
frequencies up to
500 MHz and current-
carrying capacity in
industrial
environments
Figure 1 – Product overview
Fixed connectors are
NOTE Figure 1 shows a Type I connector pair, with coding edges on a short side; for
mounted on printed
Type II connectors the coding edges are located on a long side.
circuit board by means
of soldering or press-
in, the free connector
is attached to wires by
means of soldering,
crimping, IDC or other
termination
technology.
CONNECTORS FOR ELECTRICAL AND ELECTRONIC EQUIPMENT –
PRODUCT REQUIREMENTS –
Part 3-122: Detail specification for 8-way, shielded, free and fixed
connectors for I/O and data transmission with frequencies up to
500 MHz and current-carrying capacity in industrial environments
1 Scope
This part of IEC 61076 covers 8-way, shielded, free and fixed rectangular connectors for I/O
and data transmission with frequencies up to 500 MHz. It is intended to specify the common
dimensions, mechanical, electrical and environmental characteristics and tests for this family
of connectors.
Connectors complying with this document provide an ingress protection level of IP20; however,
they are particularly suited for industrial environments with a high level of vibration.
NOTE 1 In terms of the MICE system as defined in ISO/IEC 11801-1, the connector matches the requirements of
the M I C E levels.
3 1 3 3
There are two classes of connectors defined in this document, indicated by "class A" and
"class B" which are distinguished by some electrical and mechanical characteristics to meet the
particular sets of requirements of some industrial applications.
NOTE 2 Class A meets the requirements defined in Ed.1 of this document.
NOTE 3 With the two classes A and B, the two codings Type I and II, and the two sets of transmission requirements
according to the component categories Cat 5 and Cat 6 as defined in ISO/IEC 11801-1, this document specifies
A
2 × 2 × 2 = 8 variants.
All connectors covered by this document feature a current-carrying capacity beyond the
minimum requirement of 0,75 A per pin for an ambient temperature of 60° C as defined in
ISO/IEC 11801-1.
NOTE 4 The current-carrying capacity is given by the current-temperature derating defined in this document and is
dependent on the wire size of the cable attached to the connector.
NOTE 5 With a current-carrying capacity of 0,5 A per pin and with matching the requirement of withstanding the
test current of 2 A for unmating under load as defined in IEC 60512-99-002, the connectors covered by this document
support the highest Power over Ethernet level as defined by IEEE 802.3bt (100 W PoE++ Type 4).
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, 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, Basic environmental testing procedures – Part 2-38: Tests – Test Z/AD: Com-
posite temperature/humidity cyclic test
– 8 – IEC 61076-3-122:2021 © IEC 2021
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 dimension and mass
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 60512-3-1, 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 60512-6-3, Connectors for electronic equipment – Tests and measurements – Part 6-3:
Dynamic stress tests – Test 6c: Shock
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 60512-11-3, Connectors for electronic equipment – Tests and measurements – Part 11-3:
Climatic tests – Test 11c: Damp heat, steady state
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 60512-11-9, Connectors for electronic equipment – Tests and measurements – Part 11-9:
Climatic tests – Test 11i: Dry heat
IEC 60512-11-10, Connectors for electronic equipment – Tests and measurements –
Part 11-10: Climatic tests – Test 11j: Cold
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 60512-26-100, Connectors for electronic equipment – Tests and measurements –
Part 26-100: Measurement setup, test and reference arrangements and measurements for
connectors according to IEC 60603-7 – Tests 26a to 26g
IEC 60512-28-100, Connectors for electrical and electronic equipment – Tests and
measurements – Part 28-100: Signal integrity tests up to 2 000 MHz – Tests 28a to 28g
IEC 60512-99-002, Connectors for electrical and electronic equipment – Tests and
measurements – Part-99-002: Endurance test schedules – Test 99b, Test schedule for
unmating under electrical load
IEC 60664-1, Insulation coordination for equipment within low-voltage supply systems – Part 1:
Principles, requirements and tests
IEC 61076-1:2006, Connectors for electronic equipment – Product requirements – Part 1:
Generic specification
IEC 61076-1:2006/AMD1:2019
IEC 61076-3, Connectors for electronic equipment – Product requirements – Part 3:
Rectangular connectors – Sectional specification
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 – General cabling for customer premises – Part 1:
General requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-581,
IEC 61076-1, IEC 61076-3 and IEC 60512-1 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
4 Mating information
4.1 General
Dimensions are given in millimetres. Drawings are shown in third-angle projection. The shape
of connectors may deviate from those given in Table 1 and Figure 2 through Figure 4 as long
as the dimensions specified are not changed.
Two types of connectors are defined, which can be used to distinguish between different
networks within the same building or premises.
– 10 – IEC 61076-3-122:2021 © IEC 2021
Table 1 – Mating faces of the individual connector styles
Style Description Mating face view
Fixed connector
D-shaped fixed female connector
Type I
Free connector
D-shaped free male connector
Type I
Fixed connector
U-shaped fixed female connector
Type II
Free connector
U-shaped free male connector
Type II
4.2 Contacts – Mating conditions
For dimensions see Table 2.
Figure 2 – Contact interface of a free male connector (right side)
mated with a fixed female connector (left side)
4.3 Fixed connectors Type I and II
Dimensions in millimetres
Figure 3a) – Mating side view: Type I (left), Type II (right)
– 12 – IEC 61076-3-122:2021 © IEC 2021
Dimensions in millimetres
Datum Q is the preferred free connector stop surface.
Figure 3b) – Section A-A with top view of Type I
Figure 3 – Fixed connectors
Table 2 – Dimensions for Figure 2 and Figure 3
Dimensions in millimetres
Dimension Minimum Nominal Maximum
designation
AA5 3,15 3,3 3,45
AB5 2,37 2,47 2,57
AC5 4,2 4,3 4,4
AD5 5,77 5,85 5,9
AC8 0,75 0,85 1
AE8 3,85 4 4,2
BA5 7,36 7,41 7,46
BB5 5,16 5,21 5,26
BC5 N/A 3,81 N/A
BD5 N/A 1,27 N/A
BE5 1,45 1,5 1,55
BF5 1 1,05 1,1
BG5 R 0,6 R 0,7 R 0,8
CA5 1,49 1,54 1,59
CB5 2 2,12 2,22
CC5 5,25 5,3 5,35
CD5 R 0,6 R 0,7 R 0,8
CE5 R 0 R 0,1 R 0,3
CG5 1,54 1,62 1,66
CH5 1 1,05 1,1
P5 0,25 0,3 0,35
– 14 – IEC 61076-3-122:2021 © IEC 2021
4.4 Free connectors Type I and II
For dimensions see Table 3.
Dimensions in millimetres
Datum Q is the preferred fixed connector stop surface.
Figure 4 – Free connectors Type I (left) and Type II (right)
Table 3 – Dimensions for Figure 4
Dimensions in millimetres
Dimension
Minimum Nominal Maximum
designation
AA4 5,7 5,8 5,95
AB4 2,95 3,1 3,25
AC4 1,6 1,7 1,9
AD4 4,9 5,1 N/A
AE4 0,33 0,38 0,43
AF4 1,5 1,6 N/A
AG4 0,15 0,2 0,35
CA4 5,13 5,2 5,23
CB4 1,67 1,7 1,73
CC4 R 0,4 R 0,7 R 0,8
CD4 1,07 1,1 1,13
CE4 R0,6 R 0,7 R 1
CF4 1,03 1,1 1,25
CG4 0,5 0,6 0,7
CH4 R 0,05 R 0,1 R 0,15
CI4 40° 43° 46°
CJ4 1,5 1,58 1,63
BA4 7,24 7,31 7,34
BB4 5,28 5,31 5,41
BC4 N/A 1,27 N/A
BD4 N/A 3,81 N/A
BE4 1,07 1,1 1,13
BF4 1,25 1,3 1,35
P4 0,28 0,35 0,44
5 Characteristics
5.1 General
Compliance to the test schedules is intended to ensure the reliability of all performance
parameters, including transmission parameters, over the range of operating climatic conditions.
Stable and compliant input-to-output resistance is a good indication of the stability of
transmission performance.
There are two classes of connectors defined in this document, indicated by "class A" and
"class B". These two classes are used in some of the below subclauses of this Clause 5 to
define two sets of requirements.
– 16 – IEC 61076-3-122:2021 © IEC 2021
5.2 Pin and pair grouping assignment
For those specifications where pin and pair groupings are relevant, the pin and pair grouping
assignments shall be as shown in Figure 5 and Table 4 or Table 5, unless otherwise specified.
Figure 5a) – Type I Figure 5b) – Type II
(with coding edges on one short side) (with coding edges on one long side)
Figure 5 – Fixed connector pin and pair grouping assignment
for Type I and Type II, mating face view of connector
For the board connector pin and pair assignment for 10/100 Mbps Ethernet applications, see
Table 4.
Table 4 – Pin and pair assignment for 10/100 Mbps Ethernet
Pin No. Signal Function
1 TXD_P Transmit Data +
2 TXD_N Transmit Data –
3 RXD_P Receive Data +
4 N.C. Not connected
5 N.C. Not connected
6 RXD_N Receive Data –
7 N.C. Not connected
8 N.C. Not connected
For the board connector pin and pair assignment for 1/10 Gbps Ethernet applications, see
Table 5.
Table 5 – Pin and pair assignment for 1/10 Gbps Ethernet
Pin Signal Function
No.
1 BI_DA_P Bi-directional pair A +
2 BI_DA_N Bi-directional pair A –
3 BI_DB_P Bi-directional pair B +
4 BI_DC_P Bi-directional pair C +
5 BI_DC_N Bi-directional pair C –
6 BI_DB_N Bi-directional pair B –
7 BI_DD_P Bi-directional pair D +
8 BI_DD_N Bi-directional pair D –
5.3 Classification into climatic category
The lowest and highest temperatures and the duration of the damp-heat steady-state test
should be selected from the preferred values stated in 2.3 of IEC 61076-1:2006. The connectors
are classified into climatic categories in accordance with the general rules given in IEC 60068-1.
The temperature range given in Table 6 exceeds the limits of the climatic rating C as defined
in ISO/IEC 11801-1 to meet the requirements of an industrial environment.
Table 6 – Climatic category
Climatic category Lower Upper Damp heat,
temperature temperature steady state
°C °C days
55/085/21 −55 85 21
5.4 Electrical characteristics
5.4.1 Voltage proof
Mated connectors.
Conditions: IEC 60512-4-1, Test 4a, standard atmospheric conditions.
All variants as indicated in Table 7.
Table 7 – Voltage proof
Class Signal-Signal Signal-Shield
one signal contact to all other signal between bridged signal contacts on
contacts connected together plug and board side and ground shield
A 333 V AC RMS or 500 V DC
1 500 V AC RMS or 2 250 V DC
B 1 000 V AC RMS or 1 500 V DC
5.4.2 Voltage rating
Signal and data connectors, intended for a voltage up to and including 50 V AC and/or 60 V DC.
5.4.3 Creepage and clearance distances
The permissible operating voltages depend on the end-use application and on the relevant
applicable or specified safety requirements.
In practice, reductions in creepage or clearance distances may occur due to the conductive
pattern of the printed board or the wiring used, and should duly be taken into account.
Although insulation coordination is not required for safety aspects for these connectors, it is still
required for their electrical functional requirements. For distances up to and including 2 mm,
such as in this case, the requirements of IEC 60664-1 for functional aspects may be reduced
based on more precise dimensioning per IEC TR 63040.
NOTE As stated in IEC 60664-1, the International Standard IEC 60664-5, now withdrawn, provided an alternative
and more precise dimensioning procedure for clearances and creepage distances equal to or less than 2 mm. After
its withdrawal, its content is almost identically provided by IEC TR 63040.
The creepage and clearance distances given in Table 8 apply for mated connectors.
– 18 – IEC 61076-3-122:2021 © IEC 2021
Table 8 – Creepage and clearance distances of the mating interface
Dimensions in millimetres
Minimum distance between contacts and chassis Minimum distance between adjacent contacts
Creepage Clearance Creepage Clearance
1,40 0,50 0,25 0,20
5.4.4 Current-temperature derating
Conditions: IEC 60512-5-2, Test 5b
The measurement is performed in mated condition. The contacts of the fixed connector are
connected in series on the PCB and the contacts of the free connector are connected in series
with wires with the highest possible cross-section.
The current-carrying capacity of connectors in accordance with the requirements of
IEC 61076-1:2006, 2.5, shall comply with the derating curve given in Figure 6.
t
The maximum permissible current for a given ambient temperature (t) is: I =1,76 × 1-
t
The current-temperature derating in this Figure 6 is determined with a cable of AWG 22.
Figure 6 – Connector derating curve
5.4.5 Insulation resistance
Conditions: IEC 60512-3-1, Test 3a
Method A
Mated connectors
Test voltage: 500 V DC
All types: 500 MΩ min.
5.5 Mechanical characteristics
5.5.1 Mechanical operation
Conditions: IEC 60512-9-1, Test 9a
Speed: 10 mm/s max.
Rest: 1 s minimum (mated and unmated)
750 operations.
5.5.2 Insertion and withdrawal forces
Conditions: IEC 60512-13-2, Test 13b
Latching mechanism inactivated
Speed: 12,5 mm per minute max.
All types: Insertion and withdrawal: 20 N max.
5.5.3 Vibration, sinusoidal
Mated connectors
Conditions: IEC 60512-6-4, Test 6d.
All variants as indicated in Table 9.
Table 9 – Vibration, sinusoidal
Class Severity
A 10 Hz to 55 Hz, 1,55 mm displacement or 10 g
B 10 Hz to 500 Hz, 0,35 mm displacement or 5 g
5.5.4 Shock
Mated connectors
Conditions: IEC 60512-6-3, Test 6c.
All variants as indicated in Table 10.
Table 10 – Shock
Class Severity
A 30 g half-sine shock pulses of 11 ms duration
B 50 g half-sine shock pulses of 11 ms duration
– 20 – IEC 61076-3-122:2021 © IEC 2021
5.6 Transmission performance
5.6.1 General
Compliance with this document, in respect to transmission characteristics, shall be determined
according to specific test methods described in test group FP.
All transmission performance requirements shall apply between the reference planes specified
in IEC 60512-28-100.
All transmission results shall be reported as worst-case overall result for the corresponding pair
or pair combination after testing all samples.
The test conditions and specific requirements shall be as stated in the associated subclauses
given in this document.
NOTE In the following subclauses f is the frequency, expressed in MHz.
5.6.2 Insertion loss
Mated connectors
Conditions according to IEC 60512-28-100, Test 28a
a) Connectors up to 100 MHz:
All pairs: ≤ 0,04 √ f dB from 1 MHz to 100 MHz;
b) Connectors up to 500 MHz:
All pairs: ≤ 0,02 √ f dB from 1 MHz to 500 MHz.
Whenever the formula results in a value less than 0,1 dB, the requirement shall revert to 0,1 dB.
5.6.3 Return loss
Mated connectors
Conditions according to IEC 60512-28-100, Test 28b
a) Connectors up to 100 MHz:
All pairs: ≥ 60-20log (f) dB from 1 MHz to 100 MHz;
b) Connectors up to 500 MHz:
All pairs: ≥ 68-20log (f) dB from 1 MHz to 500 MHz.
Whenever the formula results in a value greater than 30 dB, the requirement shall revert to
30 dB.
5.6.4 Near-end cross talk (NEXT)
Mated connectors
Conditions according to IEC 60512-28-100, Test 28c
a) Connectors up to 100 MHz:
All pair combinations: ≥ 83-20log (f) dB from 1 MHz to 100 MHz;
b) Connectors up to 500 MHz:
All pair combinations: minimum 94-20log (f) dB from 1 MHz to 250 MHz
All pair combinations: ≥ 46,04-30log (f /250) dB from 250 MHz to 500 MHz.
Whenever the formula results in a value greater than 75 dB, the requirement shall revert to
75 dB.
5.6.5 Far-end cross talk (FEXT)
Mated connectors
Conditions according to IEC 60512-28-100, Test 28d
a) Connectors up to 100 MHz:
All pair combinations: ≥ 75,1-20log (f) dB from 1 MHz to 100 MHz;
b) Connectors up to 500 MHz:
All pair combinations: ≥ 83,1-20log (f) dB from 1 MHz to 500 MHz.
Whenever the formula results in a value greater than 75 dB, the requirement shall revert to
75 dB.
5.6.6 Transverse conversion loss (TCL)
Mated connectors
Conditions according to IEC 60512-28-100, Test 28f
a) Connectors up to 100 MHz:
All pairs: ≥ 66-20log (f) dB from 1 MHz to 100 MHz;
b) Connectors up to 500 MHz:
All pairs: ≥ 68-20log (f) dB from 1 MHz to 500 MHz.
Whenever the formula results in a value greater than 50 dB, the requirement shall revert to
50 dB.
5.6.7 Transverse conversion transfer loss (TCTL)
Mated connectors
Conditions according to IEC 60512-28-100, Test 28g
a) Connectors up to 100 MHz:
All pair combinations: ≥ 66-20log (f) dB from 1 MHz to 100 MHz;
b) Connectors up to 500 MHz:
All pair combinations: ≥ 68-20log (f) dB from 1 MHz to 500 MHz.
Whenever the formula results in a value greater than 50 dB, the requirement shall revert to
50 dB.
5.6.8 Transfer impedance
All types:
Mated connectors
Conditions according to IEC 60512-26-100, Test 26e
0,3
All pairs: ≤ 0,1 f Ω from 1 MHz to 10 MHz and ≤ 0,02 f Ω from 10 MHz to 80 MHz.
5.6.9 Propagation delay
All types: 2,5 ns max.
Propagation delay test does not need to be performed, since it is assumed that connectors
comply by design.
– 22 – IEC 61076-3-122:2021 © IEC 2021
5.6.10 Delay skew
All types: 1,25 ns max.
Delay skew test does not need to be performed, since it is assumed that connectors comply by
design.
6 Tests and test schedule
6.1 General
This document states the test sequence (in accordance with this document) and the number of
specimens for each test sequence.
Individual variants may be submitted to type tests for approval of those particular variants.
It is permissible to limit the number of variants tested to a selection representative of the whole
range for which approval is required (which may be less than the range covered by the detail
specification), but each feature and characteristic shall be validated against the dimensional
requirements and test sequences specified in this document.
The connectors shall have been processed in a careful and workmanlike manner, in accordance
with good current practice.
Unless otherwise specified, mated sets of connectors shall be tested. For contact resistance
measurements, care shall be taken to keep a particular combination of connectors together
during the complete test sequence; that is, when un-mating is necessary for a certain test, the
same connectors shall be mated for subsequent tests.
6.2 Arrangement for input-to-output resistance test
See Figure 7 for arrangement for input-to-output resistance test.
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