Connector sets and interconnect components to be used in optical fibre communication systems - Product specifications -- Part 10-1: Type MU-PC simplex terminated on IEC 60793-2-50 category B1.1 and B1.3 singlemode fibre, with full zirconia ferrule category C

This standard contains the initial, start of life dimensional, optical, mechanical and environmental performance requirements which a terminated and assembled single mode resilient alignment sleeve MU-PC simplex connector set (plug/adaptor/plug), adaptor and patch cord must meet in order for it to be categorised as an EN standard product. Since different variants and grades of performance are permitted, product marking details are given in 3.5.

Steckverbindersätze und Verbindungsbauelemente für Lichtwellenleiter-Datenübertragungssysteme - Produktnormen -- Teil 10-1: Bauart MU-PC-Simplex zum Anschluss an Einmodenfasern der Typen B1.1 und B1.3 nach IEC 60793-2-50 mit Zirkonium-Stift für die Kategorie C

Jeux de connecteurs et composants d'interconnexion à utiliser dans les systèmes de communication par fibres optiques - Spécifications de produit -- Partie 10-1: Type MU-PC simplex câblé sur une fibre unimodale des catégories B1.1 et B1.3 de la CEI 60793-2-50, avec férule tout zircone, catégorie C

1.1   Définition du produit La présente norme donne les exigences de performances initiales, dimensionnelles en début de vie, optiques, mécaniques et environnementales auxquelles un jeu de connecteurs simplex de type MU-PC à manchon d'alignement élastique unimodaux équipés et assemblés (fiche/raccord/fiche), un raccord et un cordon de brassage doivent satisfaire afin d'être classés comme entrant dans une norme EN de produit. Dans la mesure où différentes variantes et différentes classes de performances sont autorisées, les détails de marquage des produits sont donnés en 3.5. 1.2   Compatibilité d'accouplement Bien que tous les produits conformes aux exigences de la présente norme s'accouplent entre eux, le niveau résultant de la performance de dispersion d'affaiblissement est uniquement assuré conformément au Tableau 1. Le but est que cela se vérifie indépendamment des sources de fabrication du produit. Lorsque l’on accouple des variantes de fiche ayant différentes classes d’affaiblissement, on ne peut pas assurer que le niveau d’affaiblissement qui en résulte soit meilleur que celui de la classe d’affaiblissement la moins bonne. L’accouplement d’une fiche de classe C à une fiche de classe B aboutit à un niveau incertain de performance de dispersion d'affaiblissement. 1.3   Environnement de fonctionnement Les essais sélectionnés combinés avec les sévérités et les durées sont représentatifs d'un environnement de catégorie C tel que défini dans la EN 61753-1. 1.4   Fiabilité Alors que l'espérance de vie du produit prévue dans cet environnement est de 20 ans, la conformité à la présente norme ne garantit pas la fiabilité du produit. Il convient que celle-ci soit estimée en utilisant un programme reconnu d'évaluation de la fiabilité. 1.5   Assurance de la qualité La conformité à la présente norme ne garantit pas l’uniformité de fabrication du produit. Il convient qu’elle soit maintenue en utilisant un programme reconnu d'assurance qualité.

Konektorski pribor in povezovalne komponente za uporabo v optičnih komunikacijskih sistemih – Specifikacije izdelka – 10-1. del: Simpleks tip MU-PC, zaključen na enorodnem vlaknu IEC 60793-2-50 kategorij B1 in B1.3, cirkonijeva tulka kategorije C

General Information

Status
Withdrawn
Publication Date
10-Sep-2007
Withdrawal Date
07-Mar-2022
Technical Committee
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
08-Mar-2022
Due Date
31-Mar-2022
Completion Date
08-Mar-2022

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SLOVENSKI STANDARD
SIST EN 50377-10-1:2007
01-november-2007
1DGRPHãþD
SIST EN 50377-10-1:2004
.RQHNWRUVNLSULERULQSRYH]RYDOQHNRPSRQHQWH]DXSRUDERYRSWLþQLK
NRPXQLNDFLMVNLKVLVWHPLK±6SHFLILNDFLMHL]GHOND±GHO6LPSOHNVWLS083&
]DNOMXþHQQDHQRURGQHPYODNQX,(&NDWHJRULM%LQ%FLUNRQLMHYD
WXONDNDWHJRULMH&
Connector sets and interconnect components to be used in optical fibre communication
systems - Product specifications -- Part 10-1: Type MU-PC simplex terminated on IEC
60793-2-50 category B1.1 and B1.3 singlemode fibre, with full zirconia ferrule category C
Steckverbindersätze und Verbindungsbauelemente für Lichtwellenleiter-
Datenübertragungssysteme - Produktnormen -- Teil 10-1: Bauart MU-PC-Simplex zum
Anschluss an Einmodenfasern der Typen B1.1 und B1.3 nach IEC 60793-2-50 mit
Zirkonium-Stift für die Kategorie C
Jeux de connecteurs et composants d'interconnexion a utiliser dans les systemes de
communication par fibres optiques - Spécifications de produit -- Partie 10-1: Type MU-
PC simplex câblé sur une fibre unimodale des catégories B1.1 et B1.3 de la CEI 60793-2
-50, avec férule tout zircone, catégorie C
Ta slovenski standard je istoveten z: EN 50377-10-1:2007
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
SIST EN 50377-10-1:2007 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

EUROPEAN STANDARD
EN 50377-10-1

NORME EUROPÉENNE
August 2007
EUROPÄISCHE NORM

ICS 33.180.20 Supersedes EN 50377-10-1:2003


English version


Connector sets and interconnect components
to be used in optical fibre communication systems -
Product specifications -
Part 10-1: Type MU-PC simplex terminated
on IEC 60793-2-50 category B1.1 and B1.3 singlemode fibre,
with full zirconia ferrule category C

Jeux de connecteurs et composants Steckverbindersätze
d'interconnexion à utiliser und Verbindungsbauelemente
dans les systèmes de communication für Lichtwellenleiter-
par fibres optiques - Datenübertragungssysteme -
Spécifications de produit - Produktnormen -
Partie 10-1: Type MU-PC simplex câblé Teil 10-1: Bauart MU-PC-Simplex zum
sur une fibre unimodale des catégories Anschluss an Einmodenfasern der Typen
B1.1 et B1.3 de la CEI 60793-2-50, B1.1 und B1.3 nach IEC 60793-2-50
avec férule tout zircone, catégorie C mit Zirkonium-Stift für die Kategorie C


This European Standard was approved by CENELEC on 2007-04-01. 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, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the 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


© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50377-10-1:2007 E

---------------------- Page: 2 ----------------------

EN 50377-10-1:2007 - 2 -
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 86BXA, Fibre optic
interconnect, passive and connectorised components.
The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as
EN 50377-10-1 on 2007-04-01.
This European Standard supersedes EN 50377-10-1:2003.
This document is updated to include the performance of the adaptor, and patch cord next to the pigtailed
connector as defined in the previous version. It also includes latest attenuation and return loss grades as specified
in IEC.
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) 2008-04-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-04-01
__________

---------------------- Page: 3 ----------------------

- 3 - EN 50377-10-1:2007

Connector sets and interconnect components to be used in optical fibre communication systems -
Product specifications
Part 10-1: Type MU-PC simplex terminated on IEC 60793-2-50 category B1.1 and B1.3 singlemode fibre,
          with full zirconia ferrule category C
Description Performance
Coupling mechanism: Push-pull Application: For use in IEC category C (controlled
 environment)

Configuration: Plug/adaptor/plug Attenuation grades: B: ≤ 0,12 dB mean
(random mate)
≤ 0,25 dB for ≥ 97 % of measurements


Fibre category: IEC 60793-2-50
C: ≤ 0,25 dB mean
Types B1.1 and B1.3
≤ 0,50 dB for ≥ 97 % of measurements


Return loss grade:
2: ≥ 45 dB
Cable type See Table 3

Related documents:

EN 60794-2 Optical fibre cables - Part 2: Indoor cables - Sectional specification (IEC 60794-2)
EN 61300 series Fibre optic interconnecting devices and passive components - Basic test and measurement
procedures (IEC 61300 series)
EN 61753-1 Fibre optic interconnecting devices and passive components performance standard - Part 1:
General and guidance for performance standards (IEC 61753-1)
EN 61754-6 Fibre optic connector interfaces - Part 6: Type MU connector family (IEC 61754-6)
EN 61755-1 Fibre optic connector optical interfaces - Part 1: Optical interfaces for single mode non-
dispersion shifted fibres - General and guidance (IEC 61755-1)
1)
EN 61755-3-1 Fibre optic connector optical interfaces - Part 3-1: Optical interface, 2,5 mm and 1,25 mm
diameter cylindrical full zirconia PC ferrule, single mode fibre (IEC 61755-3-1, mod.)

Outline and maximum dimensions:



78 Ref.
66 Ref.
53 Min.
41 Min.



1)
At draft stage.

---------------------- Page: 4 ----------------------

EN 50377-10-1:2007 - 4 -
Contents
1 Scope .5
1.1 Product definition.5
1.2 Intermateability .5
1.3 Operating environment.5
1.4 Reliability.5
1.5 Quality assurance .5
2 Normative references .6
3 Description .7
3.1 Plug.7
3.2 Adaptor.7
3.3 Materials.7
3.4 Dimensions.7
3.5 Colour and marking.7
4 Variants .8
4.1 Terminated plug.8
4.2 Adaptor.8
4.3 Identification of variants .8
5 Dimensional requirements.9
5.1 Outline dimensions .9
5.2 Mating face and other limit dimensions.12
6 Tests .20
6.1 Sample size.20
6.2 Test and measurement methods.20
6.3 Test sequence.21
6.4 Pass/fail criteria.21
7 Test report.21
8 Product qualification requirements.21
8.1 Dimensional and marking requirements.21
8.2 Optical performance requirements .21
8.3 Mechanical performance requirements .23
8.4 Environmental performance requirements.27

Annex A (normative) Adaptor matched reference plug details.29
Annex B (normative) Reference connector details.30
Annex C (normative) Sample size and product sourcing requirements.31
Annex D (informative) Zirconia ferrule response surface.32

Bibliography.33

Figure 1 - Outline dimensions - Plug .9
Figure 2 - Adaptor dimensions .10
Figure 3 - Plug connector interface reference planes.12
Figure 4a - Ferrule end face geometry - After termination .14
Figure 4b - Ferrule end face geometry - After termination.15
Figure 5 - Positioning of fibre core centre to ferrule centre and connector key .16
Figure 6 - Offset between plug fibre core and ideal reference plug fibre core .17
Figure 7 - Mating face and other limit dimensions - Adaptor .18
Figure 8 - Pin gauge for adaptor .20
Figure D.1 - Radius vs. undercut and apex offset .32

Table 1 - Ensured level of random attenuation.5
Table 2 - Preferred colour scheme.7
Table 3 - Plug variants .8
Table 4 - Adaptor variants.8
Table 5 - Grade C plug variants.8
Table 6 - Grade B plug variants.8
Table 7 - Adaptor variants.8
Table 8 - Optical performance requirements.21
Table 9 - Mechanical performance requirements .23
Table 10 - Environmental performance requirements .27

---------------------- Page: 5 ----------------------

- 5 - EN 50377-10-1:2007

1 Scope
1.1 Product definition
This standard contains the initial, start of life dimensional, optical, mechanical and environmental performance
requirements which a terminated and assembled single mode resilient alignment sleeve MU-PC simplex
connector set (plug/adaptor/plug), adaptor and patchcord must meet in order for it to be categorised as an EN
standard product.

Since different variants and grades of performance are permitted, product marking details are given in 3.5.

1.2 Intermateability
Although all products conforming to the requirements of this standard will intermate, the resulting level of
random attenuation performance will only be ensured in accordance with Table 1. The intention is that this will
be true irrespective of the manufacturing source(s) of the product.

When intermating plug variants having different attenuation grades, the resulting level of attenuation can not be
assured to be any better than the worst attenuation grade.
The intermating of a grade C plug with a grade B plug will result in an uncertain level of random attenuation
performance.


Table 1 - Ensured level of random attenuation
Plug variant/Attenuation grade C B
C C C
B C B

1.3 Operating environment
The tests selected combined with the severities and durations are representative of a category C environment as
defined in EN 61753-1.

1.4 Reliability
Whilst the anticipated service life expectancy of the product in this environment is 20 years, compliance with this
standard does not guarantee the reliability of the product. This should be predicted using a recognised reliability
assessment programme.

1.5 Quality assurance
Compliance with this standard does not guarantee the manufacturing consistency of the product. This should be
maintained using a recognised quality assurance programme.

---------------------- Page: 6 ----------------------

EN 50377-10-1:2007 - 6 -

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.

EN 61300-2-1 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-1: Tests - Vibration (sinusoidal) (IEC 61300-2-1)
EN 61300-2-2 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-2: Tests - Mating durability (IEC 61300-2-2)
EN 61300-2-4 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-4Tests - Fibre/cable retention (IEC 61300-2-4)
EN 61300-2-5 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-5: Tests - Torsion/twist (IEC 61300-2-5)
EN 61300-2-6 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-6: Tests - Tensile strength of coupling mechanism
(IEC 61300-2-6)
EN 61300-2-12 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-12: Tests - Impact (IEC 61300-2-12)
EN 61300-2-17 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-17: Tests - Cold (IEC 61300-2-17)
EN 61300-2-18 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-18: Tests - Dry heat - High temperature endurance
(IEC 61300-2-18)
EN 61300-2-19 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-19: Tests - Damp heat (steady state) (IEC 61300-2-19)
EN 61300-2-22 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-22: Tests - Change of temperature (IEC 61300-2-22)
EN 61300-2-42 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-42: Tests - Static side load for connectors
(IEC 61300-2-42)
EN 61300-2-44 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-44: Tests - Flexing of the strain relief of fibre optic
devices (IEC 61300-2-44)
EN 61300-3-4 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-4: Examinations and measurements – Attenuation
(IEC 61300-3-4)
EN 61300-3-6 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-6: Examinations and measurements - Return loss
(IEC 61300-3-6)
EN 61300-3-10 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-10: Examinations and measurements - Gauge retention
force (IEC 61300-3-10)
EN 61300-3-15 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-15: Examinations and measurements - Eccentricity of a
convex polished ferrule end face (IEC 61300-3-15)
EN 61300-3-16 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-16: Examinations and measurements – End face radius
of spherically polished ferrules (IEC 61300-3-16)
EN 61300-3-23 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-23: Examinations and measurements - Fibre position
relative to ferrule end face (IEC 61300-3-23)
EN 61300-3-28 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-28: Examinations and measurements - Transient loss
(IEC 61300-3-28)
EN 61300-3-34 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-34: Examinations and measurements - Attenuation of
random mated connectors (IEC 61300-3-34)
1)
EN 61300-3-42 Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-42: Examinations and measurements - Attenuation of
single mode alignment sleeves and or adaptors with resilient alignment sleeves
1)
(IEC 61300-3-42)
EN 61753-1 Fibre optic interconnecting devices and passive components performance standard -
Part 1: General and guidance for performance standards (IEC 61753-1)

1)
At draft stage.

---------------------- Page: 7 ----------------------

- 7 - EN 50377-10-1:2007

3 Description
The MU-PC connector is a single position plug connector set of plug/adaptor/plug configuration characterised by
a cylindrical, spring loaded butting ferrule of 1,25 mm nominal diameter and a push-pull coupling mechanism.
The optical alignment mechanism of the connectors is of a resilient sleeve style.

3.1 Plug
The plug features a cylindrical zirconia ferrule and a push-pull mechanism. It has a single male key which is used
to limit and may be used to orientate, the relative rotation between mated connectors.
A cover (dustcap) to protect the ferrule end face when the connector is in the unmated condition shall be
provided.

3.2 Adaptor
The adaptor has a zirconia ceramic resilient alignment sleeve. The mounting styles are duplex rectangular flange
with snap-latches with a panel cut out as SC connector and simplex rectangular flange with snap-latches.

Covers (dust caps) shall be provided to protect each port of the adaptor.

Alternative material may be used for the sleeve that have directly compatible material properties to zirconia but
the performance requirements must be met under all conditions

3.3 Materials
Materials which are not specified or which are not specifically described are left to the discretion of the
manufacturer.

3.4 Dimensions
Outline dimensions and other dimensions necessary to ensure intermateability or which affect performance are
specified. All other dimensions are left to the discretion of the manufacturer. Where the mating face limit
dimensions are not in agreement with an IEC Interface Standard this is clearly stated.

3.5 Colour and marking
Marking of the product shall be in the following order of precedence:
- identification of manufacturer;
- manufacturing date code: year/week;
- manufacturers part number;
- variant identification number.

The following colour scheme is preferred:

Table 2 - Preferred colour scheme

Adaptor De-latch housing
Blue Blue
Preferred RAL number 5015

---------------------- Page: 8 ----------------------

EN 50377-10-1:2007 - 8 -

4 Variants
4.1 Terminated plug
The following variants are permitted:
Table 3 - Plug variants


Fibre/Cable ∅
Variant No. mm Structure Note

C01 0,7 - 1,4 Buffered fibre 1 fibre
C02 1,6 ± 0,2 Reinforced cable 1 fibre
C03 Reinforced cable 1 fibre
2,0 ± 0,2
B01 0,7 - 1,4 Buffered fibre 1 fibre
B02 1,6 ± 0,2 Reinforced cable 1 fibre
B03 Reinforced cable 1 fibre
2,0 ± 0,2

4.2 Adaptor
The following variants are permitted:

Table 4 - Adaptor variants

Variant No. Format
01 Simplex
02 Rectangular flange - duplex

4.3 Identification of variants

Table 5 - Grade C plug variants

Variant number Performance grade Identification number
(Return loss)
C01 2 EN 50377-10-1-C01-2
C02 2 EN50377-10-1-C02-2
C03 2 EN 50377-10-1-C03-2


Table 6 - Grade B plug variants

Variant number Performance grade Identification number
(Return loss)
B01 2 EN 50377-10-1-B01-2
B02 2 EN 50377-10-1-B02-2
B03 2 EN 50377-10-1-B03-2


Table 7 - Adaptor variants

Variant number Identification number
01 50377-10-1-01
02 50377-10-1-02

---------------------- Page: 9 ----------------------

- 9 - EN 50377-10-1:2007

5 Dimensional requirements
5.1 Outline dimensions
5.1.1 Plug variants

Variant No. C01/B01



BL
BH

Ref. Dimensions Note
min. Mm max.
BL 0,9  1,1
BH - 54

BG
BF

Variant No. /C02/C03/B02/B03


Ref. Dimensions Note
min. mm max.
BG 1,6  2,2
BF - 54

Figure 1 - Outline dimensions - Plug

---------------------- Page: 10 ----------------------

EN 50377-10-1:2007 - 10 -

5.1.2 Adaptor variants


Variant No. 01





Z
B
D E
C
X
F A


NOTE  Panel cut out: panel thickness should be between 1,2 mm and 1,7 mm.




Ref. Dimensions Note

min. mm max.

A 26,0 26,4

B  1,65 1,75

C  9,4 9,8

D  7,0 7,2

E  9,4 9,8

F 10,4 10,6

X 10,75 10,85

Z  7,35 7,45


Figure 2 - Adaptor dimensions

---------------------- Page: 11 ----------------------

- 11 - EN 50377-10-1:2007

Variant No. 02
Z
H
G
I
F
W
A






Ref. Dimensions Note


min. mm max.

A 27,0 27,8

B 17,5 18,5


C 12,5 13,0

D 21,8 22,5 1

E 14,4 15,4

F 9,2 9,4 1


G 2,8 3,2

H 2,2 2,6 Diameter

I 1,7 2,0 2

W 2,4 2,6 Diameter

X 13,1 13,6

Y 17,9 18,1

Z 9,5 10,0

NOTE 1  The dotted lines indicate an example of the shape of the mounting flange. The

largest portion of the mounting flange shall be within these dimensions.



NOTE 2  If the adaptor is mounted using this hook, the thickness of the panel shall be

1,6 mm.


NOTE 3  The spacing between the duplex halves shall be (4,5 ± 0,1) mm.


Figure 2 - Adaptor dimensions (continued)
D
B
C
E
X
Y

---------------------- Page: 12 ----------------------

EN 50377-10-1:2007 - 12 -

5.2 Mating face and other limit dimensions
5.2.1 Plug


Figure 3 - Plug connector interface reference planes

---------------------- Page: 13 ----------------------

- 13 - EN 50377-10-1:2007

Ref. Dimensions Notes
min.   mm max.
A 1,248 5   1,249 5 Diameter,
cylindricity shall be < 0,000 5
B 2,6   2,7 Diameter
C 4,6   4,8
D 4,65   4,75
E 4,3   4,4
F 3,3   4,4
G 25  35 Degree
H 25  35 Degree
I 6,55   6,65
J 4,2   4,5
K 5,5   5,6
L 2,4   2,5
M 1,5   1,7
N 0,6   0,9
O 0,5   0,55
P 2,6   2,8
Q 1   1,1
R 2,65   2,9
S 5,5   5,6
T 4,3   4,5
U 3,6   3,7
V 2,3   2,4
W 6,5   6,6
AA 4,3   4,4
AB 3,85   3,95
AC 0,7   0,9
AD 0,2   0,4
AE 3   3,1
AF 2,2   2,3
Figure 3 - Plug connector interface reference planes (continued)

---------------------- Page: 14 ----------------------

EN 50377-10-1:2007 - 14 -

5.2.2 Ferrule end face geometry after termination

BK
DE T A IL A
BG
A
BF
N ote 3
BI

Ref. Dimensions Notes
min. mm max.
BF  5 30 1,4
BG  0,60  0,85 Diameter
BI 32,5 37,5 Degrees
BK - 0,000 1 Figure 4b 2,3

Figure 4a - Ferrule end face geometry - After termination
NOTE 1 Dome eccentricity of the spherically polished end face is a function of the undercut and the radius of the ferrule the maximum value
is 50 µm. All 3 end face geometry parameters radius, dome offset and fibre position are related to each other. The allowed maximum dome
offset can be calculated by means of the formula below Figure 4b. Figure 4b shows the maximum undercut in case of a maximum dome offset
of 50 µm with a permitted radius range of 5 mm to 30 mm. Annex D shows the 3 D representation of the response surface.
NOTE 2 The negative dimension refers to fibre protrusion.
NOTE 3 A chamfer or radius is allowed to a maximum depth of 0,5 mm from the ferrule end face. The surface roughness of the ferrule shall be
Ra < 0,1 µm.
NOTE 4 The radius shall be measured over a diameter of 0,25 mm.
NOTE 5 The given endface conditions are for 3 mol% yttria stabilised zirconia ZrO ferrule with grain size < 0,35 µm, a Young’s modulus
2
between (200 ± 20) GPa and a Poisson ratio between 0,30 to 0,31 which is normative for this specification.

---------------------- Page: 15 ----------------------

- 15 - EN 50377-10-1:2007
AAlllowlowaableble U Unnddeercrcut ut ffoorr 2, 2,9 9 NN
ApApeexx Of Offsfsetet = = 5 500 µ µmm
300300
250250
AAlllowlowaableble U Unnddeercrcut 2,ut 2,9 N9 N
200200
150150
100100
5050
00
00 55 1010 1515 2020 2525 3030
EEnd Fnd Faaccee Ra Raddiiuuss ( (mmmm))



− 0.795 6 2 6 2 3
()
()
u R, δ 1798⋅R − R1⋅ 0 + R⋅δ10
...

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