EN 61076-4-100:2001

SLOVENSKI SIST EN 61076-4-100:2002
prva izdaja
STANDARD
september 2002
Connectors with assessed quality, for use in d.c., low frequency analogue and
digital high-speed data applications - Part 4: Printed board connectors - Section
100: Detail specification for two-part connector modules having a grid of 2,5 mm for
printed boards and backplanes (IEC 61076-4-100:2001)
ICS 31.220.10 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 61076-4-100
NORME EUROPÉENNE
EUROPÄISCHE NORM December 2001
ICS 31.220.10 Supersedes EN 61076-4-100:1998
English version
Connectors for electronic equipment
Part 4-100: Printed board connectors with assessed quality -
Detail specification for two-part connector modules having
a grid of 2,5 mm for printed boards and backplanes
(IEC 61076-4-100:2001)
Connecteurs pour équipements Steckverbinder für elektronische
électroniques Einrichtungen
Partie 4-100: Connecteurs pour cartes Teil 4-100: Steckverbinder für gedruckte
imprimées - Schaltungen mit bewerteter Qualität -
Spécification particulière pour les modules Bauartspezifikation für indirekte
de connecteurs en deux parties pour Steckverbinder für gedruckte Schaltungen
cartes imprimées et fonds de panier, und Rückplatten, modulare Bauweise,
au pas de 2,5 mm Raster 2,5 mm
(CEI 61076-4-100:2001) (IEC 61076-4-100:2001)
This European Standard was approved by CENELEC on 2001-12-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61076-4-100:2001 E

Foreword
The text of document 48B/1086/FDIS, future edition 2 of IEC 61076-4-100, prepared by SC 48B,
Connectors, of IEC TC 48, Electromechanical components and mechanical structures for electronic
equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 61076-4-100 on 2001-12-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2002-09-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2004-12-01
Annexes designated "normative" are part of the body of the standard.
In this standard, annexes A and ZA are normative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61076-4-100:3001 was approved by CENELEC as a
European Standard without any modification.
__________
- 3 - EN 61076-4-100:2001
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60068-1 1988 Environmental testing
+ corr. October 1988 Part 1: General and guidance
+ A1 1992 EN 60068-1 1994
1)
IEC 60297-3 1984 Dimensions of mechanical structures of HD 493.3 S2 1993
the 482,6 mm (19 in) series
Part 3: Subracks and associated plug-in
units
IEC 60326-3 1991 Printed boards --
Part 3: Design and use of printed
boards
IEC 60352-1 1997 Solderless connections EN 60352-1 1997
Part 1: Wrapped connections - General
requirements, test methods and
practical guidance
IEC 60352-5 1995 Part 5: Solderless press-in connections EN 60352-5 1995
- General requirements, test methods
and practical guidance
IEC 60410 1973 Sampling plans and procedures for--
inspection by attributes
IEC 60512 Series Connectors for electronic equipment - EN 60512 Series
Tests and measurements
IEC 60664-1 1992 Insulation coordination for equipment HD 625.1 S1 1996
(mod) within low-voltage systems + corr. November 1996
Part 1: Principles, requirements and
tests
1) HD 493.3 includes A1:1992 to IEC 60297-3.

Publication Year Title EN/HD Year
IEC 60917-2-2 1994 Modular order for the development of EN 60917-2-2 1996
mechanical structures for electronic
equipment practices
Part 2: Sectional specification -
Interface co-ordination dimensions for
the 25 mm equipment practice --
Section 2: Detail specification -
Dimensions for subracks, chassis,
backplanes, front panels and plug-in
units
IEC 61076-1 1995 Connectors with assessed quality, for EN 61076-1 1995
use in d.c., low frequency analogue and
in digital high-speed data applications
Part 1: Generic specification - Capability
approval
A1 1996 A1 1996
IEC 61076-4 1995 Part 4: Sectional specification - Printed EN 61076-4 1996
board connectors
IEC 61076-4-102 1997 Part 4: Printed board connectors -- EN 61076-4-102 1997
Section 102: Detail specification for two-
part single-pole connectors, for multiple
uses on plug-in units, with pre-centring,
coding and early mating features,
having a metric grid in accordance with
IEC 60917
NORME
CEI
INTERNATIONALE IEC
61076-4-100
INTERNATIONAL
QC 480301XX0001
STANDARD
Deuxième édition
Second edition
2001-10
Connecteurs pour équipements électroniques –
Partie 4-100:
Connecteurs pour cartes imprimées
sous assurance de la qualité –
Spécification particulière pour les modules de
connecteurs en deux parties pour cartes
imprimées et fonds de panier, au pas de 2,5 mm
Connectors for electronic equipment –
Part 4-100:
Printed board connectors with assessed quality –
Detail specification for two-part connector
modules having a grid of 2,5 mm for printed
boards and backplanes
© IEC 2001 Droits de reproduction réservés ⎯ Copyright - all rights reserved
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électronique ou mécanique, y compris la photocopie et les including photocopying and microfilm, without permission in
microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
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Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http://www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
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PRICE CODE
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

61076-4-100 © IEC:2001 – 3 –
CONTENTS
FOREWORD.11
1 General data .17
1.1 Recommended method of mounting.17
1.2 Ratings and characteristics .17
1.3 Normative references .19
1.4 Marking .19
1.5 IEC type designation .21
1.6 Ordering information.21
2 Technical information .23
2.1 Definitions .23
2.1.1 Backplane male contact arrangement .23
2.2 Survey of styles and variants.25
2.3 Information on application .27
2.3.1 Complete connectors (pairs).27
2.3.2 Fixed board connectors .29
2.3.3 Free board connectors.29
2.3.4 Accessories.29
2.3.5 Shielding/grounding.29
2.3.6 Basic type of termination .29
2.4 Contact arrangements .31
2.4.1 Fixed board connectors .31
2.4.2 Free board connectors.33
3 Dimensional information .35
3.1 General .35
3.2 Isometric view and common features.37
3.2.1 Common features .39
3.2.2 Reference system.39
3.2.3 Height dimensions .41
3.2.4 Width dimensions .43
3.2.5 Depth dimensions.45
3.3 Engagement (mating) information.47
3.3.1 Electrical engagement length.47
3.3.2 Inclination.51
3.3.3 Planarity.51
3.4 Fixed board connectors .51
3.4.1 Dimensions.51
3.4.2 Terminations .65
3.5 Free board connectors .67
3.5.1 Dimensions.67
3.5.2 Terminations .77
3.6 Accessories.77
3.7 Mounting information for fixed board connectors .79
3.7.1 Hole pattern on panels .79
3.8 Mounting information for free board connectors.81
3.8.1 Hole pattern on printed boards .81
3.8.2 Requirements for press-in tools .83

61076-4-100 © IEC:2001 – 5 –
3.9 Gauges .85
3.9.1 Sizing gauges and retention force gauges .85
4 Characteristics .87
4.1 Climatic category.87
4.2 Electrical .87
4.2.1 Creepage and clearance distances .87
4.2.2 Voltage proof (applicable for PL1, 2, 3).87
4.2.3 Current-carrying capacity (applicable for PL1, 2, 3) .89
4.2.4 Contact resistance.91
4.2.5 Insulation resistance.91
4.3 Mechanical.93
4.3.1 Mechanical operation.93
4.3.2 Insertion and withdrawal forces .93
4.3.3 Contact retention in insert.93
4.3.4 Static load, axial.93
4.3.5 Vibration (sinusoidal).93
5 Test schedule.95
5.1 General .95
5.1.1 Arrangement for contact resistance measurement .99
5.1.2 Arrangement for dynamic stress tests.99
5.1.3 Arrangement for testing static load, axial .99
5.1.4 Wiring arrangement for insulation resistance, voltage proof and
polarization voltage during damp heat test.101
5.1.5 Arrangement for flammability test .101
5.1.6 Arrangement for measurement of the press-in connections (female
connector) .103
5.1.7 Planarity of mounted connectors.105
5.1.8 Test board for fixed and free board connectors.107
5.2 Test schedule tables .109
5.2.1 Preliminary group P .109
5.2.2 Group AP – Dynamic/climatic .111
5.2.3 Group BP – Mechanical endurance.117
5.2.4 Group CP – Moisture .119
5.2.5 Group DP – Electrical load .121
5.2.6 Group EP – Mechanical resistivity .123
5.2.7 Group FP – Chemical fluids .125
5.2.8 Group GP – Connections .125
6 Quality assessment procedures.127
6.1 Qualification approval testing .127
6.1.1 Method 1 .127
6.1.2 Method 2 .129
6.2 Quality conformance inspection.129
6.2.1 Lot-by-lot tests .129
6.2.2 Periodic tests.131
6.3 Delayed delivery, re-inspection.133
Annex A (normative) Mechanical structures .135

61076-4-100 © IEC:2001 – 7 –
Figure 1 – Backplane male contact arrangement.23
Figure 2– Free and fixed board connectors for modular arrangement.27
Figure 3 – Contact arrangements.31
Figure 4 – Contact arrangements.33
Figure 5 – Isometric view .37
Figure 6 – Height dimensions.41
Figure 7 – Width dimensions.43
Figure 8 – Depth dimensions .45
Figure 9 – Mating conditions .47
Figure 10 – First contact point .49
Figure 11 – Perpendicular to engagement (mating) direction.49
Figure 12 – Inclination .51
Figure 13 – Style A .53
Figure 14 – Details W and X and views U and V .55
Figure 15 – Style B .57
Figure 16 – Style D .59
Figure 17 – Style G.61
Figure 18 – Style H .63
Figure 19 – Terminations .65
Figure 20 – Style A .67
Figure 21 – View X and details U, V, W, Y and Z .69
Figure 22 – Style B .71
Figure 23 – Style D .73
Figure 24 – Style G.75
Figure 25 – Style H .77
Figure 26 – Terminations .77
Figure 27 – Hole pattern on panels .79
Figure 28 – Hole pattern on printed boards .81
Figure 29 – Hole pattern on printed boards .83
Figure 30 – Gauge dimensions .85
Figure 31 – Current-carrying capacity .89
Figure 32 – Measuring points.91
Figure 33 – Dynamic stress tests arrangements.99
Figure 34 – Wiring of specimen.101
Figure 35 – Arrangement for flammability test .101
Figure 36 – Press-in connections (female connector) measurement arrangements .103
Figure 37 – Planarity of mounted connectors .105
Figure 38 – Test board for fixed and free board connectors .107
Figure A.1 – Plug-in unit dimension .137

61076-4-100 © IEC:2001 – 9 –
Table 1 – Rated voltage.17
Table 2 – Contact arrangement and number of contacts .25
Table 3 – Styles of termination.25
Table 4 – Isometric view and common features.39
Table 5 – Height dimensions.41
Table 6 – Width dimensions .43
Table 7 – Depth dimensions.45
Table 8 – Ranges of safe contact performance .47
Table 9 – Dimensions of terminations .65
Table 10 – Hole pattern on panels .79
Table 11 – Hole pattern on printed boards .83
Table 12 – Gauges .85
Table 13 – Climatic category.87
Table 14 – Minimum creepage and clearance distances.87
Table 15 – Voltage proof.87
Table 16 – Current-carrying capacity at 70 °C.89
Table 17 – Number of mechanical operations .93
Table 18 – Insertion and withdrawal forces .93
Table 19 – Vibration severity.93
Table 20 – Number of specimens.97
Table 21 – Dynamic stress tests .99
Table 22 – Test board for fixed and free board connectors.107
Table 23 – Performance levels.127
Table 24 – Lot-by-lot tests .129
Table 25 – Periodic tests .131
Table 26 – Delayed delivery, re-inspection.133
Table A.1 – Dimensions required in accordance with IEC 60917-2-2.135

61076-4-100 © IEC:2001 – 11 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONNECTORS FOR ELECTRONIC EQUIPMENT –
Part 4-100: Printed board connectors with assessed quality –
Detail specification for two-part connector modules
having a grid of 2,5 mm for printed boards and backplanes
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61076-4-100 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, issued in 1994, and constitutes a
technical revision.
The text of this standard is based on the following documents:
FDIS Report on voting
48B/1086/FDIS 48B/1117/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.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated when a new edition is prepared.

61076-4-100 © IEC:2001 – 13 –
The QC number that appears on the front cover of this publication is the specification number
of the IEC Quality Assessment System for Electronic Components (IECQ).
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.
Annex A forms an integral part of this specification.
The committee has decided that the contents of this publication will remain unchanged until
2004. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
61076-4-100 © IEC:2001 – 15 –
CONNECTORS FOR ELECTRONIC EQUIPMENT –
Part 4-100: Printed board connectors with assessed quality –
Detail specification for two-part connector modules
having a grid of 2,5 mm for printed boards and backplanes
IEC SC 48B: LF connectors IEC 61076-4-100
QC 480301XX0001
Specification available from:
IEC Central Office or from the addresses shown on the
inside cover.
Page 15 of 138 pages
ELECTRONIC COMPONENTS OF ASSESSED QUALITY
IN ACCORDANCE WITH:
– GENERIC SPECIFICATION IEC 61076-1
First edition:1995
See clause 3 for dimensions
Modular two-part connector for printed boards and
backplanes, grid of 2,5 mm in accordance with
IEC 60917
Connector with height multiple modules n × 25 mm,
(with n = 1, 2, 4, 9,10) five rows
Performance levels (PL): 1, 2, 3
)
Assessment levels: B and G *
Combinations of performance and
assessment levels: 1G, 2B, 2G, 3B
IEC  1839/01
*) See 6.2 and 6.3.
61076-4-100 © IEC:2001 – 17 –
1 General data
1.1 Recommended method of mounting
The free board connectors are provided either with solder or with press-in contacts. The
mounting of the free board connector is achieved by press-in pivots. The terminations of
the free board connectors shall fit into holes in the printed board according to IEC 60326-3,
located on a grid of 2,5 mm.
The fixed board connectors are provided either with:
– press-in contacts;
– press-in and wrap contacts;
– press-in and wrap and mating area contacts.
The connector is fixed on the press-in contacts. Fixing holes on the backplane are not
necessary. The distance of termination centre lines is 2,5 mm or a multiple of it. The
terminations of the fixed board connectors are suited for backplanes having a grid dimension
of 2,5 mm.
NOTE Information about manufacturers who have components qualified to this detail specification is given in the
Qualified Products List.
1.2 Ratings and characteristics
Rated voltage: Contact/contact for fully loaded connector
(arrangement 1)
Table 1 – Rated voltage
Material group Pollution degree Rated voltage
V
I, II, IIIa/b 1 250
II, IIIa/b 2 32
NOTE Reference is made to table 14 of this specification, and table 4
of IEC 60664-1 listing the relation between creepage distances,
pollution degree and material groups versus voltages r.m.s.
Current rating: 1 A at 70 °C for fully loaded connector (arrangement 1)
Insulation resistance: 10 MΩ min. for PL1 and PL2
10 MΩ min. for PL3
Climatic category: PL1: 55/125/56
PL2: 55/125/21
PL3: 25/100/00
Printed board thickness: 1,6 mm to 3,2 mm for free board connector
1,6 mm min. for fixed board connector
Contact spacing: 2,5 mm
61076-4-100 © IEC:2001 – 19 –
1.3 Normative references
The following normative documents contain provisions which, through reference in this text,
constitute provisions of this part of IEC 61076. For dated references, subsequent
amendments to, or revisions of, any of these publications do not apply. However, parties to
agreements based on this part of IEC 61076 are encouraged to investigate the possibility of
applying the most recent editions of the normative documents indicated below. For undated
references, the latest edition of the normative document referred to applies. Members of IEC
and ISO maintain registers of currently valid International Standards.
IEC 60068-1:1988, Environmental testing – Part 1: General and guidance
Amendment 1 (1992)
IEC 60297-3:1984, Dimensions of mechanical structures of the 482,6 mm (19 in) series – Part
3: Subracks and associated plug-in units
IEC 60326-3:1991, Printed boards – Part 3: Design and use of printed boards
IEC 60352-1:1997, Solderless connections - Part 1: Wrapped connections - General
requirements, test methods and practical guidance
IEC 60352-5:1995, Solderless connections – Part 5: Solderless press-in connections –
General requirements, test methods and practical guidance
IEC 60410:1973, Sampling plans and procedures for inspections by attributes
IEC 60512 (all parts): Connectors for electronic equipment – Tests and measurements (see
IEC 60512-1-100, 2001)
IEC 60664-1:1992, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, requirements and tests
IEC 60917-2-2:1994, Modular order for the development of mechanical structures for
electronic equipment practices – Part 2: Sectional specification – Interface co-ordination
dimensions for the 25 mm equipment practice – Section 2: Detail specification – Dimensions
for subracks, chassis, backplanes, front panels and plug-in units
IEC 61076-1:1995, Connectors with assessed quality, for use in d.c., low-frequency analogue
and in digital high-speed data applications – Part 1: Generic specification
Amendment 1 (1996)
IEC 61076-4:1995, Connectors with assessed quality, for use in d.c., low-frequency analogue
and in digital high-speed data applications – Part 4: Sectional specification – Printed board
connectors
IEC 61076-4-102:1997, Connectors with assessed quality, for use in d.c., low-frequency
analogue and in digital high-speed data applications – Part 4: Printed board connectors –
Section 102: Detail specification for two-part single-pole connectors for multiple uses on plug-
in units with pre-centring coding and early mating features, having a metric grid in accordance
with IEC 60917.
1.4 Marking
Marking of the connector and the package shall be in accordance with 2.6 of IEC 61076-4.

61076-4-100 © IEC:2001 – 21 –
1.5 IEC type designation
Connectors, connector bodies and contacts according to this standard shall be designated by
the following system:
IEC 61076-4-100 - L N N N L L - L N L N N N L
-
Letter denoting the
Number of detail
assessment level
specification
B Assessment level B
G Assessment level G
Letter denoting the A
style according to .
table 2 . Number denoting the
. performance level
H
For individual contacts Z 1 Performance level PL1
2 Performance level PL2
3 Performance level PL3
Number of contacts or contact cavities
Connector body without contacts 000
Number denoting the contact
For individual contacts 001
arrangement
...
0 Individual contact
According to table 2 .
1 Complete connector
2 according to 2.4.1 and 2.4.2
9 Connector body without
Letter denoting the Male M
contacts
type of contact Female F
P-. Letter and number denoting the type
Letter Press-in P
U-. of termination according to
denoting the Press-in and wire wrap U
table 3
basic type of Press-in and wire wrap and V
termination mating area
Number denoting the contact finish
Not applicable Z
0 Not applicable
1 Gold alloy
2 Palladium alloy with gold flash
3 Silver alloy
4 Tin alloy
5 Nickel alloy
A Connector body according
to 3.4 and 3.5 Letter denoting the
B Connector body for special differentiation
contacts between connector
NOTE "L" stands for letter.
D Complete connector
and connector body
"N" stands for number.
S Individual contact according
to 3.4 and 3.5
EXAMPLE – Connector style B, having 85 female contacts with gold alloy contact finish with
press-in terminations. Complete free board connector for boards with a thickness of 1,6 mm to
4 mm, with performance level 2 and assessment level G:
IEC 61076 – 4 – 100 – B 085 FP – D1P – 312G
1.6 Ordering information
To order connectors according to this detail specification, the type designation described in
1.5 shall be used.
61076-4-100 © IEC:2001 – 23 –
2 Technical information
2.1 Definitions
2.1.1 Backplane male contact arrangement
Figure 1 shows a backplane male contact arrangement for a continuous grid of 2,5 mm, i.e.
male contacts on the pitch line of two connectors are permitted in height and width. Free and
fixed board connector bodies are designed to accept a continuous 2,5 mm grid of male
contacts.
15 15
Free board connector
Fixed board connector
Backplane
Wrap zone
Male
contacts
Interface shroud
Interface connector
IEC  1840/01
Free board connector body: moulding for female connector
Fixed board connector body: moulded shroud for fixed board connector
Fixed board connector: shroud with contacts
Interface shroud: shroud without contacts
FMLB contact: First mate last break contact
Figure 1 – Backplane male contact arrangement

61076-4-100 © IEC:2001 – 25 –
2.2 Survey of styles and variants
From 1 to 10 system-units (SU) and from 12 to 475 mated lines, for details see table 2.
Table 2 – Contact arrangement and number of contacts
2)
Styles A B D G H
Height of styles (mm) 25 50 100 225 250
1)
Contact arrangement 1 Number of contacts 35 85 185 425 475
1)
Contact arrangement 2 Number of contacts 18 43 93 214 239
1)
Contact arrangement 3 Number of contacts 12 27 57 132 147
1)
Contact arrangements according to 2.4.1 and 2.4.2.
2)
This style allows a limited downward compatibility to equipment practice according to IEC 60297-3.
Table 3 – Styles of termination
Identification letter and number for style of termination
P – 1 P – 2
Termination for press-in with compliant pin on Termination for press-in with solid pin on free
free board connector to a printed board with a board connector to a printed board with a
thickness of 1,6 mm to 3,2 mm, and through thickness of 1,6 mm to 3,2 mm, and plated
metallized holes, diameter: 1 according to through holes, diameter: 1 according to
IEC 60352-5 IEC 60352-5
P – 3 P – 4
Termination for press-in with compliant pin on Termination for press-in with solid pin on fixed
fixed board connector to a printed board with a board connector to a printed board with a
thickness of 1,6 mm to 4,0 mm, and through thickness of 1,6 mm to 4,0 mm, and plated
metallized holes, diameter: 1 according to through holes, diameter: 1 according to
IEC 60352-5 IEC 60352-5
U – 1 U – 2
Termination as P-3 with posts Termination as P-4 with posts
0,6 mm × 0,6 mm for one wrap, 0,6 mm × 0,6 mm for one wrap,
wire diameter: 0,25 mm according to wire diameter: 0,25 mm according to
IEC 60352-1 and male mating area for rear I/O IEC 60352-1 and male mating area for rear I/O
connection connection
U – 3 U – 4
Termination as P-3 with posts Termination as P-4 with posts
0,6 mm × 0,6 mm for two wraps, 0,6 mm × 0,6 mm for two wraps,
wire diameter: 0,25 mm according to wire diameter: 0,25 mm according to
IEC 60352-1 and male mating area for rear I/O IEC 60352-1 and male mating area for rear I/O
connection connection
U – 5 U – 6
Termination as P-3 with posts Termination as P-4 with posts
0,6 mm × 0,6 mm for three wraps, 0,6 mm × 0,6 mm for three wraps,
wire diameter: 0,25 mm according to wire diameter: 0,25 mm according to
IEC 60352-1 and male mating area for rear I/O IEC 60352-1 and male mating area for rear I/O
connection connection
61076-4-100 © IEC:2001 – 27 –
2.3 Information on application
2.3.1 Complete connectors (pairs)
Based on the multi-module 25 mm, the connector styles may be stackable in height at
random. The arrangement of the free board connectors are normally the same as the
arrangements of the fixed board connectors.
Examples for arrangements of fixed and free board connectors.
n = 4
n = 2
n = 4
– Same connector styles
Fixed board
connector
Free board
connector
n = 10
– Different connector styles
Fixed board
acceptable if bending and
connector
offsetting of assembled
connectors do not
Free board
exceed 0,5 mm
connector
n = 10
– Combinations not permitted
Fixed board
mating conditions are
connector
not guaranteed because
of missing guidance at
the ends Free board
connector
IEC  1841/01
Figure 2– Free and fixed board connectors for modular arrangement

61076-4-100 © IEC:2001 – 29 –
2.3.2 Fixed board connectors
Planarity before press-in operation to backplane according to 3.4.1 and after press-in to
backplane according to 5.1.7.
2.3.3 Free board connectors
Planarity before press-in operation to printed board according to 3.5.1 and after press-in to
printed board according to 5.1.7.
2.3.4 Accessories
2.3.4.1 Special contacts
Not applicable.
2.3.4.2 Coding devices
According IEC 61076-4-102.
2.3.4.3 Mounting devices
Not applicable.
2.3.5 Shielding/grounding
Not applicable.
2.3.6 Basic type of termination
Not applicable.
61076-4-100 © IEC:2001 – 31 –
2.4 Contact arrangements
2.4.1 Fixed board connectors
Mating face
Hole pattern
E
E
Contact arrangement
D
1 D
C C
B
B
A
A
3 5 3 5
2 4 6
2 4 6
E
E
Contact arrangement
D
D
C C
B
B
A
A
3 5 3 5
2 4 6
2 4 6
E
E
Contact arrangement 3
C C
A
A
3 5
2 4 6 24 6
IEC  1842/01
Figure 3 – Contact arrangements
NOTE For mounting information see 3.7.1 (hole pattern).

61076-4-100 © IEC:2001 – 33 –
2.4.2 Free board connectors
Arrangement    2
Arrangement 1
Mating face Mating face
Hole pattern
Hole pattern
E
E
D
D
C
C
B
B
A
A
3 5 3 5
2 4 6 2 4 6
B D
B D
A C E A C E
Arrangement     3
Mating face
Hole pattern
E
C
A
2 4 6
AC E
IEC  1843/01
Figure 4 – Contact arrangements
NOTE For mounting information see 3.8.1 (hole pattern).

61076-4-100 © IEC:2001 – 35 –
3 Dimensional information
3.1 General
All dimensions are in millimetres.
Drawings are shown in the first angle projection. The shape of the connectors may deviate
from those given in the following figures as long as the specified dimensions are not
influenced.
The information about the bending in 3.3.3 and 5.1.7 is valid for the condition of delivery. The
permissible bending of the mounted connector is stated in 5.1.7.
Missing dimensions can be chosen accor
...