Connector sets and interconnect components to be used in optical fibre communication systems - Product specifications - Part 4-3: Type SC/APC simplex 9° terminated on EN 60793-2-50 of type B-652.D and B-657.A singlemode fibre with full zirconia ferrule, category OP

1.1   Product definition
This document contains the initial, start of life dimensional, optical, mechanical and environmental performance requirements which a connector terminated with cylindrical zirconia 9° angled PC ferrule and assembled singlemode resilient alignment sleeve SC-APC simplex connector set (plug/adaptor/plug), adaptor and patchcord meet in order for it to be categorized as an EN standard product. This document is intended to replace CECC 86 265-803.
Since different variants are permitted, product marking details are given in 4.6.
1.2   Intermateability
Products conforming to the requirements of this document are intended to intermate, and it is expected that the specified level of random attenuation performance will be met. The intention is that this will be true irrespective of the manufacturing source(s) of the product.
1.3   Operating environment
The tests selected, combined with the severities and durations, are representative of a category OP environment described in EN IEC 61753 1.
1.4   Reliability
Whilst the anticipated service life expectancy of the product in this environment is 20 years, compliance with this document does not guarantee the reliability of the product. This is expected to be predicted using a recognized reliability assessment programme.
1.5   Quality assurance
Compliance with this document does not guarantee the manufacturing consistency of the product. This is expected to be maintained using a recognized quality assurance programme.

Steckverbindersätze und Verbindungsbauelemente für Lichtwellenleiter- Datenübertragungssysteme - Produktnormen - Teil 4-3: Bauart SC-APC-Simplex, 9°, zum Anschluss an Einmodenfasern der Typen B-652.D und B-657.A nach EN 60793-2-50 mit Zirkoniumdioxid-Ferrule für die Kategorie OP

Jeux de connecteurs et composants d’interconnexion à utiliser dans les systèmes de communication par fibres optiques - Spécifications de produit - Partie 4-3: Type SC/APC simplex 9° raccordé sur fibres unimodales de types B-652.D et B-657.A de l’EN 60793-2-50 avec une férule en zircone pleine, catégorie OP

1.1   Définition du produit
Le présent document contient les exigences de performances initiales, dimensionnelles de début de vie, optiques, mécaniques et environnementales auxquelles un connecteur raccordé à une férule PC cylindrique en zircone à angle de 9° et un jeu de connecteurs (fiche-raccord-fiche) de type SC-APC simplex à manchon d’alignement élastique unimodal assemblé, un raccord et un cordon de brassage satisfont afin d’être classés comme produits entrant dans une norme EN de produit. Le présent document est destiné à remplacer la CECC 86 265-803.
Dans la mesure où différentes variantes sont autorisées, les détails de marquage des produits sont donnés en 4.6.
1.2   Compatibilité d’accouplement
Les produits conformes aux exigences du présent document sont prévus pour s’accoupler entre eux et il est attendu que le niveau spécifié de performance de dispersion d’affaiblissement soit atteint. Le but est que cela se vérifie indépendamment des sources de fabrication du produit.
1.3   Environnement de fonctionnement
Les essais choisis, combinés avec leurs sévérités et leurs durées, sont représentatifs d’un environnement de catégorie OP décrit dans l’EN IEC 61753-1.
1.4   Fiabilité
Alors que l’espérance de vie du produit prévue dans cet environnement est de 20 ans, la conformité au présent document ne garantit pas la fiabilité du produit. Il est attendu que celle-ci soit estimée en utilisant un programme reconnu d’évaluation de la fiabilité.
1.5   Assurance de la qualité
La conformité au présent document ne garantit pas l’uniformité de fabrication du produit. Il est prévu qu’elle soit suivie en utilisant un programme reconnu d’assurance de la qualité.

Konektorski sestavi in povezovalne komponente za uporabo v optičnih komunikacijskih sistemih - Specifikacije izdelka - 4-3. del: Tip SC/APC, simpleksni 9°, zaključen z enorodnim vlaknom tipa B-652.D in B-657.A po standardu EN 60793-2-50, s polno cirkonijevo tulko, kategorija OP

1.1   Opredelitev izdelka
Ta dokument vsebuje začetne dimenzijske, optične, mehanske in okoljske zahteve za delovanje, ki jih morajo na začetku svoje življenjske dobe izpolnjevati konektor, zaključen s cilindrično cirkonijevo tulko PC pod kotom 9°, montirani konektorski sestav simpleksa SC-APC enorodne odporne poravnalne spojke (vtič-pretvornik-vtič), pretvornik in stikalni kabel, da se lahko kategorizirajo kot izdelki v skladu s standardom EN. Ta dokument nadomešča standard CECC 86 265-803.
Ker so dovoljene različne izvedbe, so podrobnosti o označevanju izdelkov podane v točki 4.6.
1.2   Medsebojna združljivost
Za izdelke, ki ustrezajo zahtevam iz tega dokumenta, je predvidena medsebojna združljivost in pričakuje se, da bo zagotovljena določena raven naključnega slabljenja. Namen tega je, da bo tako ne glede na proizvodne vire izdelka.
1.3   Delovno okolje
Izbrani preskusi v kombinaciji z resnostjo in trajanjem so reprezentativni za okolje kategorije OP, opisano v standardu EN IEC 61753-1.
1.4   Zanesljivost
Medtem ko znaša pričakovana tehnična življenjska doba izdelka v tem okolju 20 let, skladnost s tem dokumentom ne zagotavlja zanesljivosti izdelka. Pričakuje se, da naj bi to napovedali v okviru priznanega programa za oceno zanesljivosti.
1.5   Zagotavljanje kakovosti
Skladnost s tem dokumentom ne zagotavlja doslednosti izdelave izdelka. Pričakuje se, da naj bi to vzdrževali v okviru priznanega programa za zagotavljanje kakovosti.

General Information

Status
Published
Public Enquiry End Date
31-Jul-2020
Publication Date
15-Aug-2022
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
27-Jul-2022
Due Date
01-Oct-2022
Completion Date
16-Aug-2022

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 50377-4-3:2022
01-oktober-2022
Konektorski sestavi in povezovalne komponente za uporabo v optičnih
komunikacijskih sistemih - Specifikacije izdelka - 4-3. del: Tip SC/APC, simpleksni
9°, zaključen z enorodnim vlaknom tipa B-652.D in B-657.A po standardu EN 60793
-2-50, s polno cirkonijevo tulko, kategorija OP
Connector sets and interconnect components to be used in optical fibre communication
systems - Product specifications - Part 4-3: Type SC/APC simplex 9° terminated on EN
60793-2-50 of type B-652.D and B-657.A singlemode fibre with full zirconia ferrule,
category OP
Steckverbindersätze und Verbindungsbauelemente für Lichtwellenleiter-
Datenübertragungssysteme - Produktnormen - Teil 4-3: Bauart SC-APC-Simplex, 9°,
zum Anschluss an Einmodenfasern der Typen B-652.D und B-657.A nach EN 60793-2-
50 mit Zirkoniumdioxid-Ferrule für die Kategorie OP
Jeux de connecteurs et composants d’interconnexion à utiliser dans les systèmes de
communication par fibres optiques - Spécifications de produit - Partie 4-3: Type SC/APC
simplex 9° raccordé sur fibres unimodales de types B-652.D et B-657.A de l’EN 60793-2-
50 avec une férule en zircone pleine, catégorie OP
Ta slovenski standard je istoveten z: EN 50377-4-3:2022
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
SIST EN 50377-4-3:2022 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50377-4-3:2022

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SIST EN 50377-4-3:2022


EUROPEAN STANDARD EN 50377-4-3

NORME EUROPÉENNE

EUROPÄISCHE NORM July 2022
ICS 33.180.20
English Version
Connector sets and interconnect components to be used in
optical fibre communication systems - Product specifications -
Part 4-3: Type SC/APC simplex 9° terminated on EN 60793-2-50
of type B-652.D and B-657.A singlemode fibre with full zirconia
ferrule, category OP
Jeux de connecteurs et composants d'interconnexion à Steckverbindersätze und Verbindungsbauelemente für
utiliser dans les systèmes de communication par fibres Lichtwellenleiter- Datenübertragungssysteme -
optiques - Spécifications de produit - Partie 4-3: Type Produktnormen - Teil 4-3: Bauart SC-APC-Simplex, 9°, zum
SC/APC simplex 9° raccordé sur fibres unimodales de Anschluss an Einmodenfasern der Typen B-652.D und B-
types B-652.D et B-657.A de l'EN 60793-2-50 avec une 657.A nach EN 60793-2-50 mit Zirkoniumdioxid-Ferrule für
férule en zircone pleine, catégorie OP die Kategorie OP
This European Standard was approved by CENELEC on 2022-06-06. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.



European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 50377-4-3:2022 E

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SIST EN 50377-4-3:2022
EN 50377-4-3:2022 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 7
1.1 Product definition . 7
1.2 Intermateability . 7
1.3 Operating environment . 7
1.4 Reliability . 7
1.5 Quality assurance . 7
2 Normative references . 7
3 Terms and definitions . 9
4 Description . 9
4.1 General . 9
4.2 Plug . 9
4.3 Adaptor . 9
4.4 Materials . 9
4.5 Dimensions . 9
4.6 Colour and marking . 9
5 Variants .10
5.1 Terminated plug .10
5.2 Adaptor .10
6 Dimensional requirements .11
6.1 Outline dimensions .11
6.1.1 Plug .11
6.1.2 Adaptor .11
6.2 Mating face and other limit dimensions .13
6.2.1 Plug .13
6.2.2 Adaptor .15
6.2.3 Ferrule end face geometry after termination .17
6.2.4 Pin gauge for adaptor .20
7 Tests .20
7.1 Sample size .20
7.2 Test and measurement methods .20
7.3 Test sequence .21
7.4 Pass/fail criteria .21
8 Test report .21
9 Product qualification requirements .21
9.1 Dimensional and marking requirements .21
9.2 Optical Requirements .21
9.3 Mechanical performance requirements .23
9.4 Environmental performance requirements .27
Annex A (informative) Attenuation against reference .30
A.1 Test details .30
2

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SIST EN 50377-4-3:2022
EN 50377-4-3:2022 (E)
Reference connector details . 30
A.2
Annex B (normative) Adaptor matched reference plug details . 31
Annex C (normative) Sample size and product sourcing requirements . 32
Annex D (informative) Zirconia ferrule response surface . 33
D.1 Maximum allowed spherical fibre undercut . 33
Annex E (informative) Estimation of average fibre core eccentricity limits as a function of batch
size . 34
Bibliography . 36

3

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SIST EN 50377-4-3:2022
EN 50377-4-3:2022 (E)
European foreword
This document (EN 50377-4-3:2022) has been prepared by CLC/TC 86BXA “Fibre optic interconnect, passive
and connectorised components”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2023-06-06
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2025-06-06
conflicting with this document have to be
withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A complete
listing of these bodies can be found on the CENELEC website.
4

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SIST EN 50377-4-3:2022
EN 50377-4-3:2022 (E)
Introduction
Connector sets and interconnect components to be used in optical fibre communication systems —
Product specifications
Part 4-3: Type SC/APC simplex 9° terminated on EN 60793-2-50 of type B-652.D and B-657.A
singlemode fibre with full zirconia ferrule, category OP
Description Performance
Coupling mechanism: Push-pull Application: For use in EN
Category OP (outdoor
protected
environment)
Configuration: Plug/adaptor/plug Attenuation B: ≤ 0,12 dB mean
grade: ≤ 0,25 dB for 97 %
(random mate) of measurements
Fibre category: EN 60793-2-50
Types — B-652.D and
 B-657.A
Cable type: See Table 3 Return loss 1: ≥ 60 dB mated
grade: ≥ 55 dB unmated
(random mate)
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 IEC 61753-1:2018 Fibre optic interconnecting devices and passive components performance
standard — Part 1: General and guidance (IEC 61753-1:2018)
EN IEC 61754-4 Fibre optic interconnecting devices and passive components — Fibre optic
connector interfaces — Part 4: Type SC connector family (IEC 61754-4)
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)
ETSI EN 300 019 series Environmental Engineering (EE); Environmental conditions and environmental
tests for telecommunications equipment
ETSI TS 100 671 Transmission and Multiplexing (TM); Passive optical components; Optical fibre
connectors for single mode optical fibre communication systems; Common
requirements and conformance testing
5

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SIST EN 50377-4-3:2022
EN 50377-4-3:2022 (E)
Outline and maximum dimensions:


6

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SIST EN 50377-4-3:2022
EN 50377-4-3:2022 (E)
1 Scope
1.1 Product definition
This document contains the initial, start of life dimensional, optical, mechanical and environmental performance
requirements which a connector terminated with cylindrical zirconia 9° angled PC ferrule and assembled
singlemode resilient alignment sleeve SC-APC simplex connector set (plug/adaptor/plug), adaptor and
patchcord meet in order for it to be categorized as an EN standard product. This document is intended to replace
CECC 86 265-803.
Since different variants are permitted, product marking details are given in 4.6.
1.2 Intermateability
Products conforming to the requirements of this document are intended to intermate, and it is expected that the
specified level of random attenuation performance will be met. The intention is that this will be true irrespective
of the manufacturing source(s) of the product.
1.3 Operating environment
The tests selected, combined with the severities and durations, are representative of a category OP
environment described in EN IEC 61753-1.
1.4 Reliability
Whilst the anticipated service life expectancy of the product in this environment is 20 years, compliance with
this document does not guarantee the reliability of the product. This is expected to be predicted using a
recognized reliability assessment programme.
1.5 Quality assurance
Compliance with this document does not guarantee the manufacturing consistency of the product. This is
expected to be maintained using a recognized quality assurance programme.
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.
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 IEC 61300-2-4, Fibre optic interconnecting devices and passive components - Basic test and measurement
procedures - Part 2-4: Tests - 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 (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 61300-2-7, Fibre optic interconnecting devices and passive components - Basic test and measurement
procedures - Part 2-7: Tests - Bending moment (IEC 61300-2-7)
7

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SIST EN 50377-4-3:2022
EN 50377-4-3:2022 (E)
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 61300-2-22, Fibre optic interconnecting devices and passive components - Basic test and measurement
procedures - Part 2-22: Tests - Change of temperature (IEC 61300-2-22)
EN 61300-2-26, Fibre optic interconnecting devices and passive components - Basic test and measurement
procedures - Part 2-26: Tests - Salt mist (IEC 61300-2-26)
EN 61300-2-27, Fibre optic interconnecting devices and passive components - Basic test and measurement
procedures - Part 2-27: Tests - Dust - Laminar flow (IEC 61300-2-27)
EN 61300-2-42, Fibre optic interconnecting devices and passive components - Basic test and measurement
procedures - Part 2-42: Tests - Static side load for strain relief (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 IEC 61300-2-46, Fibre optic interconnecting devices and passive components - Basic test and measurement
procedures - Part 2-46: Tests - Damp heat cyclic (IEC 61300-2-46)
EN 61300-2-50, Fibre optic interconnecting devices and passive components - Basic test and measurement
procedures - Part 2-50: Tests - Fibre optic connector proof test with static load - Singlemode and multimode
(IEC 61300-2-50)
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 61300-3-34, 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)
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 (IEC 61300-3-42)
EN 61300-3-47, Fibre optic interconnecting devices and passive components - Basic test and measurement
procedures - Part 3-47: Examinations and measurements - End face geometry of PC/APC spherically polished
ferrules using interferometry (IEC 61300-3-47)
ISO 8015, Geometrical product specifications (GPS) - Fundamentals - Concepts, principles and rules
8

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SIST EN 50377-4-3:2022
EN 50377-4-3:2022 (E)
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
4 Description
4.1 General
The SC-APC connector is a single position plug connector set of plug/adaptor/plug configuration characterized
by a cylindrical, spring loaded butting ferrule of 2,5 mm nominal diameter and a latched push-pull coupling
mechanism. The optical alignment mechanism of the connectors is of a resilient sleeve style.
4.2 Plug
The plug features a cylindrical zirconia ceramic ferrule and a push-pull coupling mechanism. The plug housing
has a single male key, which is used to limit the relative rotation between mated plugs. A cover (dust cap) shall
be provided to protect the ferrule end face when the connector is in the unmated condition.
4.3 Adaptor
The adaptor has a zirconia ceramic resilient alignment sleeve. The mounting style is a rectangular flange -
simplex.
Covers (dust caps) are provided to protect each port of the adaptor.
4.4 Materials
Materials which are not specified or which are not specifically described are left to the discretion of the
manufacturer.
4.5 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.
4.6 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 preferred colour scheme is given in Table 1.
9

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SIST EN 50377-4-3:2022
EN 50377-4-3:2022 (E)
Table 1 — Preferred colour scheme
Delatch housing SC-APC plug Adaptor
Green, RAL 6029 Green, RAL 6029
5 Variants
5.1 Terminated plug
The defined fibre/cable variants are given in Table 2.
Table 2 — Plug variants
      E N 5 0 3 7 7 - 4 - 3 - * * - B 1


    Variant No. Fibre/cable Structure Note
mm
    01 0,9 ± 0,2 Buffered fibre 9 degrees
    02 1,8 ± 0,2 Reinforced cabl 9 degrees
e
    03 2,0 ± 0,2 Reinforced 9 degrees
cable
    04 2,4 ± 0,2 Reinforced 9 degrees
cable
    05 3,0 ± 0,2 Reinforced 9 degrees
cable


    Variant Attenuation grade
    B B


    Code Return loss grade
    1 1
5.2 Adaptor
The defined adaptor variants are given in Table 3.
10

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SIST EN 50377-4-3:2022
EN 50377-4-3:2022 (E)
Table 3 — Adaptor variants
      E N 5 0 3 7 7 - 4 - 3 - * * *



    Variant number Format
    A01 Rectangular flange - simplex
6 Dimensional requirements
6.1 Outline dimensions
6.1.1 Plug
Figure 1 gives the outline dimensions of plugs.

Variant No. 01

Variant No. 02 - 06
Reference Dimensions Note
min. mm max.
BH  58
BF  60
Figure 1 — Outline dimensions — Plug
6.1.2 Adaptor
Figure 2 gives the outline dimensions of adaptors.
Variant No. A01
11

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SIST EN 50377-4-3:2022
EN 50377-4-3:2022 (E)

a) Adaptor

b) Panel cut out
Reference Dimensions Note
min. mm max.
AF 21,5 22,5
AG 17,9 18,1
AH 12,6 13,0
AI 9,2 9,4
AJ 2,2 2,4 Diameter
AK 27,0 27,8
AL 2,8 3,2
AM 14,4 16,4
AN 7,7 8,0
a
AO 1,7 2,0 See
W 2,4 2,6 Diameter
X 13,1 13,5
Y 17,9 18,1
Z 9,5 10,0
a
Panel thickness should be between 1,0 mm and 1,5 mm.
Figure 2 — Adaptor outline dimensions
12

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SIST EN 50377-4-3:2022
EN 50377-4-3:2022 (E)
6.2 Mating face and other limit dimensions
6.2.1 Plug
Figure 3 gives the limit dimensions for plug mating faces.

Key
1 mechanical reference plane 4 plane B
2 coupling sleeve 5 plane A
3 guide key 6 ferrule
NOTE See following page.
13

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SIST EN 50377-4-3:2022
EN 50377-4-3:2022 (E)
References Dimensions Note
 Min. mm max.
d e
A 2,498 5 2,499 5 Diameter
B 4,80 4,90 Diameter
C 6,80 7,40
D 4,90 5,30
E 6,70 6,80
F 19 23 Degree
G 25 35 Degree
a b
H 7,15 7,50
β 89,5 90,5 Degree
I 0,80 1,20
J 5,30 5,50
c
K −0,10 0,05
L 2,11 2,50
M 2,00 2,80
N 6,60 6,80
O 1,60 1,80
P 8,89 8,99
Q 0,80 1,00
R 7,29 7,39
rS 0,80 0,90 Radius
T 4,05 4,15
U 5,40 5,60
V 0 0,50
cBC 0 0,50 Chamfer
f
EA 90 Degree
a
Ferrule compression force shall be from 7,8 N to 11,8 N when the ferrule is compressed to a point where H is
(7,00 ± 0,10) mm.
b
This value shows the dimension after the ferrule is polished and in the unmated condition.
c
The negative dimension refers to the position of the inside bottom plane in the direction towards the rear of the
connector relative to the mechanical reference plane.
d
Envelope condition in accordance with ISO 8015.
e
Surface roughness R ≤ 0,1 µm.
a
f
The dimension EA is defined as an angle between two planes: One plane, plane A, through the axis of the ferrule
and the axis of symmetry of the guide key. The other plane, plane B, passes through the axis of the ferrule and
the normal to the angle PC reference plane.
Figure 3 — Plug mating face and other limit dimensions
14

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SIST EN 50377-4-3:2022
EN 50377-4-3:2022 (E)
6.2.2 Adaptor
Figure 4 gives the limit dimensions for adaptor mating faces.

Key
1 mechanical reference plane
2 guide groove
NOTE See following page.
15

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SIST EN 50377-4-3:2022
EN 50377-4-3:2022 (E)
References Dimensions Note
 min. mm max.
a
A   Diameter
B 4,69 4,79 Diameter
D 4,9 5,5
H 6,9 7,1
I 0,4 0,8
J 5,51 5,9
K 0,06 1
L 1,9 2,1
O 2,0 2,2
P 9,0 9,1
R 7,4 7,5
S 1,0 1,1
T 3,8 4,04
U 5,0 5,4 Degree
V 0,6 1,6
AA 27 33 Degree
AB 0,8 1,0
AC 0,4 0,6
AD 0,7 0,8
AE 0,4 0,6
BA 5,4 5,6
BB 10,8 11,2
a
The connector alignment feature is a zirconia ceramic resilient sleeve which is free to move in the adaptor. Alternative materials may
be used for the sleeve that have directly compatible materials properties with zirconia. The gauge retention force shall be measured
with two gauge pins, each inserted to the middle of the alignment feature. The gauge retention force shall be from 2,9 N to 5,9 N, for
the extraction of one gauge pin. The surface roughness of the inside of the alignment sleeve shall be R < 0,3 µm.
a
Figure 4 — Adaptor mating face and other limit dimensions
16

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EN 50377-4-3:2022 (E)
6.2.3 Ferrule end face geometry after termination

Key
1 no sharp edge
2 fibre axis
3 ferrule axis
4 angled-PC reference plane
Figure 5 — Ferrule end face geometry after termination
17

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SIST EN 50377-4-3:2022
EN 50377-4-3:2022 (E)
Table 4 — Optical interface parameter values for APC ferrules
References Parameter values Note
 min. max.
J 0,8 1,7 Diameter, mm
K N/A 1,8 mm

Figure 6 — Geometric requirements for fibre core location
Table 5 — Optical interface parameter values for APC ferrules
Dimensions (Grade B)
References Note
min. max.
b c
a
A −100 , nm
b
B 5 12 Radius , mm
C 0 50 dome offset µm
D 2,498 5 2,499 5 Diameter, mm
E 0 0,2 Degrees
d
F 0 0,001 0 Radius, mm
G 0 0,000 3 Radius, mm
H 0 50 Degrees
I 9 Degrees
J 0,8 1,7 Diameter, mm
K - 1,8 mm
NOTE The core location (F,G) and tilt angle (E) values specified in this document have been calculated to ensure that the
attenuation values for Grade B are met under all circumstances.
a
Contact force 4,9 N minimum. The given end face conditions are for 3 mol % Yttria stabilized Zirconia ZrO ferrule with grain
2
size < 0,35 µm, a Young’s modulus between (200 ± 20) GPa and a Poisson ratio between 0,30 to 0,31 which is normative for this
specification. The relationship between the 3 end face parameters A,B,C is graph
...

SLOVENSKI STANDARD
oSIST prEN 50377-4-3:2020
01-julij-2020
Konektorski sestavi in povezovalne komponente za uporabo v optičnih
komunikacijskih sistemih - Specifikacije proizvoda - 4-3. del: Tip SC/APC,
simpleksni 9°, zaključen z enorodnim vlaknom tipa B-652.D in B-657.A po
standardu EN 60793-2-50, s polno cirkonijevo tulko, kategorija OP
Connector sets and interconnect components to be used in optical fibre communication
systems - Product specifications - Part 4 3: Type SC/APC simplex 9° terminated on EN
60793 2 50 of type B-652.D and B-657.A singlemode fibre with full zirconia ferrule,
category OP
Ta slovenski standard je istoveten z: prEN 50377-4-3
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
oSIST prEN 50377-4-3:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 50377-4-3:2020

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oSIST prEN 50377-4-3:2020

EUROPEAN STANDARD DRAFT
prEN 50377-4-3
NORME EUROPÉENNE

EUROPÄISCHE NORM

March 2020
ICS
English Version
Connector sets and interconnect components to be used in
optical fibre communication systems - Product specifications
Part 4 3: Type SC/APC simplex 9° terminated on EN 60793 2 50
of type B-652.D and B-657.A singlemode fibre with full zirconia
ferrule, category OP
To be completed To be completed
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2020-06-12.

It has been drawn up by CLC/TC 86BXA.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CENELEC 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 CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.



European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 68976 Ref. No. prEN 50377-4-3 E

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oSIST prEN 50377-4-3:2020
prEN 50377-4-3:2020 (E)
1 Contents Page
2 Contents . 2
3 European foreword . 3
4 Introduction . 4
5 1 Scope . 5
6 1.1 Product definition. 5
7 1.2 Intermateability . 5
8 1.3 Operating environment . 5
9 1.4 Reliability . 5
10 1.5 Quality assurance. 5
11 2 Normative references . 5
12 3 Terms and definitions . 6
13 4 Description . 7
14 4.1 General . 7
15 4.2 Plug . 7
16 4.3 Adaptor . 7
17 4.4 Materials . 7
18 4.5 Dimensions . 7
19 4.6 Colour and marking . 7
20 5 Variants. 7
21 5.1 Terminated plug . 7
22 5.2 Adaptor . 8
23 6 Dimensional requirements . 8
24 6.1 Outline dimensions . 8
25 6.2 Mating face and other limit dimensions . 11
26 7 Tests . 17
27 7.1 Sample size . 17
28 7.2 Test and measurement methods . 17
29 7.3 Test sequence . 18
30 7.4 Pass/fail criteria . 18
31 8 Test report . 18
32 9 Product qualification requirements . 18
33 9.1 Dimensional and marking requirements . 18
34 9.2 Optical Requirements . 18
35 9.3 Mechanical performance requirements . 20
36 9.4 Environmental performance requirements . 24
37 Annex A (informative) Attenuation against reference . 27
38 Annex B (normative) Adaptor matched reference plug details . 28
39 Annex C (normative) Sample size and product sourcing requirements . 29
40 Annex D (informative) Zirconia ferrule response surface . 30
41 Bibliography . 31
2

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42 European foreword
43 This document (prEN 50377-4-3:2020) has been prepared by CLC/TC 86BXA “Fibre optic interconnect, passive
44 and connectorised components“.
45 This document is currently submitted to the Enquiry.
46 The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)
3

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oSIST prEN 50377-4-3:2020
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47 Introduction
Connector sets and interconnect components to be used in optical fibre communication systems —
Product specifications
Part 4–3: Type SC/APC simplex 9° terminated on EN 60793-2-50 of type B-652.D and B-657.A
singlemode fibre with full zirconia ferrule, category OP
Description Performance
Coupling mechanism: Push-pull Application: For use in EN
Category OP (outdoor
protected environment)
Configuration: Plug/adaptor/plug Attenuation grade: B: ≤ 0,12 dB
(random mate) mean ≤ 0,25 dB for
97 %
of measurements
Fibre category: EN 60793-2-50
Types — B-652.D and B-
657.A
Cable type: See Table 3 Return loss grade: 1: ≥ 60 dB
(random mate) mated ≥ 55 dB
unmated
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 IEC 61753-1:2018 Fibre optic interconnecting devices and passive components performance
standard — Part 1: General and guidance for performance standards
(IEC 61753-1)
EN 61754-4 Fibre optic connector interfaces — Part 4: Type SC connector family (IEC 61754-4)
EN 61755-1 Fibre optic connector optical interfaces — Part 1: Optical interfaces for singlemode
non-dispersion shifted fibres — General and guidance (IEC 61755-1)
ETSI EN 300 019 series Environmental Engineering (EE); Environmental conditions and environmental
tests for telecommunications equipment
ETSI TS 100 671 Transmission and Multiplexing (TM); Passive optical components; Optical fibre
connectors for single mode optical fibre communication systems; Common
requirements and conformance testing
Outline and maximum dimensions:

4

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48 1 Scope
49 1.1 Product definition
50 This document contains the initial, start of life dimensional, optical, mechanical and environmental performance
51 requirements which a connector terminated with cylindrical zirconia 9° angled PC ferrule and assembled singlemode
52 resilient alignment sleeve SC-APC simplex connector set (plug/adaptor/plug), adaptor and patchcord meet in order
53 for it to be categorized as an EN standard product. This document is intended to replace CECC 86 265-803.
54 Since different variants are permitted, product marking details are given in 4.6.
55 1.2 Intermateability
56 Products conforming to the requirements of this document are intended to intermate, and it is expected that the
57 specified level of random attenuation performance will be met. The intention is that this will be true irrespective of
58 the manufacturing source(s) of the product.
59 1.3 Operating environment
60 The tests selected, combined with the severities and durations, are representative of a category OP environment
61 described in EN IEC 61753-1.
62 1.4 Reliability
63 Whilst the anticipated service life expectancy of the product in this environment is 20 years, compliance with this
64 document does not guarantee the reliability of the product. This is expected to be predicted using a recognized
65 reliability assessment programme.
66 1.5 Quality assurance
67 Compliance with this document does not guarantee the manufacturing consistency of the product. This is expected
68 to be maintained using a recognized quality assurance programme.
69 2 Normative references
70 The following documents are referred to in the text in such a way that some or all of their content constitutes
71 requirements of this document. For dated references, only the edition cited applies. For undated references, the
72 latest edition of the referenced document (including any amendments) applies.
73 EN 61300-2-1, Fibre optic interconnecting devices and passive components - Basic test and measurement
74 procedures - Part 2-1: Tests - Vibration (sinusoidal) (IEC 61300-2-1)
75 EN 61300-2-2, Fibre optic interconnecting devices and passive components - Basic test and measurement
76 procedures - Part 2-2: Tests - Mating durability (IEC 61300-2-2)
77 EN 61300-2-4, Fibre optic interconnecting devices and passive components - Basic test and measurement
78 procedures - Part 2-4: Tests - Fibre/cable retention (IEC 61300-2-4)
79 EN 61300-2-5, Fibre optic interconnecting devices and passive components - Basic test and measurement
80 procedures - Part 2-5: Tests - Torsion (IEC 61300-2-5)
81 EN 61300-2-6, Fibre optic interconnecting devices and passive components - Basic test and measurement
82 procedures - Part 2-6: Tests - Tensile strength of coupling mechanism (IEC 61300-2-6)
83 EN 61300-2-7, Fibre optic interconnecting devices and passive components - Basic test and measurement
84 procedures - Part 2-7: Tests - Bending moment (IEC 61300-2-7)
85 EN 61300-2-12, Fibre optic interconnecting devices and passive components - Basic test and measurement
86 procedures - Part 2-12: Tests - Impact (IEC 61300-2-12)
5

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87 EN 61300-2-17, Fibre optic interconnecting devices and passive components - Basic test and measurement
88 procedures - Part 2-17: Tests - Cold (IEC 61300-2-17)
89 EN 61300-2-18, Fibre optic interconnecting devices and passive components - Basic test and measurement
90 procedures - Part 2-18: Tests - Dry heat - High temperature endurance (IEC 61300-2-18)
91 EN 61300-2-22, Fibre optic interconnecting devices and passive components - Basic test and measurement
92 procedures - Part 2-22: Tests - Change of temperature (IEC 61300-2-22)
93 EN 61300-2-26, Fibre optic interconnecting devices and passive components - Basic test and measurement
94 procedures - Part 2-26: Tests - Salt mist (IEC 61300-2-26)
95 EN 61300-2-27, Fibre optic interconnecting devices and passive components - Basic test and measurement
96 procedures - Part 2-27: Tests - Dust - Laminar flow (IEC 61300-2-27)
97 EN 61300-2-42, Fibre optic interconnecting devices and passive components - Basic test and measurement
98 procedures - Part 2-42: Tests - Static side load for strain relief (IEC 61300-2-42)
99 EN 61300-2-44, Fibre optic interconnecting devices and passive components - Basic test and measurement
100 procedures - Part 2-44: Tests - Flexing of the strain relief of fibre optic devices (IEC 61300-2-44)
101 EN 61300-2-46, Fibre optic interconnecting devices and passive components - Basic test and measurement
102 procedures - Part 2-46: Tests - Damp heat cyclic (IEC 61300-2-46)
103 EN 61300-2-50, Fibre optic interconnecting devices and passive components - Basic test and measurement
104 procedures - Part 2-50: Tests - Fibre optic connector proof test with static load - Singlemode and multimode
105 (IEC 61300-2-50)
106 EN 61300-3-6, Fibre optic interconnecting devices and passive components - Basic test and measurement
107 procedures - Part 3-6: Examinations and measurements - Return loss (IEC 61300-3-6)
108 EN 61300-3-10, Fibre optic interconnecting devices and passive components - Basic test and measurement
109 procedures - Part 3-10: Examinations and measurements - Gauge retention force (IEC 61300-3-10)
110 EN 61300-3-34, Fibre optic interconnecting devices and passive components - Basic test and measurement
111 procedures - Part 3-34: Examinations and measurements - Attenuation of random mated connectors
112 (IEC 61300-3-34)
113 EN 61300-3-42, Fibre optic interconnecting devices and passive components - Basic test and measurement
114 procedures - Part 3-42: Examinations and measurements - Attenuation of single mode alignment sleeves and or
115 adaptors with resilient alignment sleeves (IEC 61300-3-42)
116 EN 61300-3-47, Fibre optic interconnecting devices and passive components - Basic test and measurement
117 procedures - Part 3-47: Examinations and measurements - End face geometry of PC/APC spherically polished
118 ferrules using interferometry (IEC 61300-3-47)
119 3 Terms and definitions
120 No terms and definitions are listed in this document.
121 ISO and IEC maintain terminological databases for use in standardization at the following addresses:
122 • IEC Electropedia: available at http://www.electropedia.org/
123 • ISO Online browsing platform: available at http://www.iso.org/obp
6

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124 4 Description
125 4.1 General
126 The SC-APC connector is a single position plug connector set of plug/adaptor/plug configuration characterized by
127 a cylindrical, spring loaded butting ferrule of 2,5 mm nominal diameter and a latched push-pull coupling mechanism.
128 The optical alignment mechanism of the connectors is of a resilient sleeve style.
129 4.2 Plug
130 The plug features a cylindrical zirconia ceramic ferrule and a push-pull coupling mechanism. The plug housing has
131 a single male key, which is used to limit the relative rotation between mated plugs. A cover (dust cap) shall be
132 provided to protect the ferrule end face when the connector is in the unmated condition.
133 4.3 Adaptor
134 The adaptor has a zirconia ceramic resilient alignment sleeve. The mounting style is a rectangular flange - simplex.
135 Covers (dust caps) are provided to protect each port of the adaptor.
136 4.4 Materials
137 Materials which are not specified or which are not specifically described are left to the discretion of the manufacturer.
138 4.5 Dimensions
139 Outline dimensions and other dimensions necessary to ensure intermateability or which affect performance are
140 specified. All other dimensions are left to the discretion of the manufacturer. Where the mating face limit dimensions
141 are not in agreement with an IEC Interface Standard this is clearly stated.
142 4.6 Colour and marking
143 Marking of the product shall be in the following order of precedence:
144 — identification of manufacturer;
145 — manufacturing date code: year/week;
146 — manufacturers part number;
147 — variant identification number.
148 The preferred colour scheme is given in Table 1.
149 Table 1 — Preferred colour scheme
Delatch housing SC-APC plug Adaptor
Green, RAL 6029 Green, RAL 6029
150 5 Variants
151 5.1 Terminated plug
152 The defined fibre/cable variants are given in Table 2.
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153 Table 2 — Plug variants
      E N 5 0 3 7 7 - 4 - 3 - * * - B 1


    Variant No. Fibre/cable Structure Note
mm
    01 0,9 ± 0,2 Buffered fibre 9 degrees
    02 1,8 ± 0,2 Reinforced cabl 9 degrees
e
    03 2,0 ± 0,2 Reinforced 9 degrees
cable
    04 2,4 ± 0,2 Reinforced 9 degrees
cable
05 3,0 ± 0,2 Reinforced 9 degrees

cable


    Variant Attenuation grade
    B B


    Code Return loss grade
    1 1
154 5.2 Adaptor
155 The defined adaptor variants are given in Table 3.
156 Table 3 — Adaptor variants
      E N 5 0 3 7 7 - 4 - 3 - * * *



    Variant number Format
    A01 Rectangular flange - simplex
157 6 Dimensional requirements
158 6.1 Outline dimensions
159 6.1.1 Plug
160 Figure 1 gives the outline dimensions of plugs.
8

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161
162 Variant No. 01
163
164 Variant No. 02 - 06
Ref. Dimensions Note
min. mm max.
BH  58
BF  60
165 Figure 1 — Outline dimensions — Plug
166 6.1.2 Adaptor
167 Figures 2 gives the outline dimensions of adaptors.
168 Variant No. A01
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169
170 a) Adaptor
171
172 b) Panel cut out
Ref. Dimensions Note
min. mm max.
AF 21,5 22,5
AG 17,9 18,1
AH 12,6 13,0
AI 9,2 9,4
AJ 2,2 2,4 Diameter
AK 27,0 27,8
AL 2,8 3,2
AM 14,4 16,4
AN 7,7 8,0
a
AO 1,7 2,0
See
W 2,4 2,6 Diameter
X 13,1 13,5
Y 17,9 18,1
Z 9,5 10,0
a
Panel thickness should be between 1,0 mm and 1,5 mm.
173 Figure 2 — Adaptor outline dimensions
10

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174 6.2 Mating face and other limit dimensions
175 6.2.1 Plug
176 Figure 3 gives the limit dimensions for plug mating faces.
177
178 NOTE See following page.
11

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References Dimensions Note
Min. mm max.
d e
A 2,498 5 2,499 5
Diameter
B 4,80 4,90 Diameter
C 6,80 7,40
D 4,90 5,30
E 6,70 6,80
F 19 23 Degree
G 25 35 Degree
a b
H 7,15 7,50

β 89,5 90,5 Degree
I 0,80 1,20
J 5,30 5,50
c
K -0,10 0,05

L 2,11 2,50
M 2,00 2,80
N 6,60 6,80
O 1,60 1,80
P 8,89 8,99
Q 0,80 1,00
R 7,29 7,39
rS 0,80 0,90 Radius
T 4,05 4,15
U 5,40 5,60
V 0 0,50
cBC 0 0,50 Chamfer
f
EA 90
Degree
a
Ferrule compression force shall be from 7,8 N to 11,8 N when the ferrule is compressed to a point where H is
(7,00 ± 0,10) mm.
b
This value shows the dimension after the ferrule is polished and in the unmated condition.
c
The negative dimension refers to the position of the inside bottom plane in the direction towards the rear of the
connector relative to the mechanical reference plane.
d
Envelope condition in accordance with ISO 8015.
e
Surface roughness R ≤ 0,1 µm.
a
f
The dimension EA is defined as an angle between two planes: One plane, plane A, through the axis of the ferrule
and the axis of symmetry of the guide key. The other plane, plane B, passes through the axis of the ferrule and
the normal to the angle PC reference plane.
179 Figure 3 — Plug mating face and other limit dimensions
180 6.2.2 Adaptor
181 Figure 4 gives the limit dimensions for adaptor mating faces.
12

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182
References Dimensions Note
min. mm max.
a
A
Diameter
B 4,69 4,79 Diameter
D 4,9 5,5
H 6,9 7,1
I 0,4 0,8
J 5,51 5,9
K 0,06 1
L 1,9 2,1
O 2,0 2,2
P 9,0 9,1
R 7,4 7,5
S 1,0 1,1
T 3,8 4,04
U 5,0 5,4 Degree
V 0,6 1,6
AA 27 33 Degree
AB 0,8 1,0
AC 0,4 0,6
AD 0,7 0,8
AE 0,4 0,6
BA 5,4 5,6
BB 10,8 11,2
a
The connector alignment feature is a zirconia ceramic resilient sleeve which is free to move in the adaptor.
Alternative materials may be used for the sleeve that have directly compatible materials properties with
zirconia. The gauge retention force shall be measured with two gauge pins, each inserted to the middle of the
alignment feature. The gauge retention force shall be from 2,9 N to 5,9 N, for the extraction of one gauge pin.
The surface roughness of the inside of the alignment sleeve shall be R < 0,3 µm.
a
183 Figure 4 — Adaptor mating face and other limit dimensions
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184 6.2.3 Ferrule end face geometry after termination
185
186
187 Figure 5 — Ferrule end face geometry after termination
188 Table 4 — Optical interface parameter values for APC ferrules
References Parameter values Note
 min. max.
J 0,8 1,7 Diameter, mm
K N/A 1,8 mm
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189
190 Figure 6 — Geometric requirements for fibre core location
191 Table 5 — Optical interface parameter values for APC ferrules
Dimensions (Grade B)
References Note
min. max.
b c
a
A −100
, nm

b
B 5 12
Radius , mm
C 0 50 dome offset µm
D 2,498 5 2,499 5 Diameter, mm
E 0 0,2 Degrees
d
F 0 Radius, mm
0,001 0
G 0 0,000 3 Radius, mm
H 0 50 Degrees
I 9 Degrees
J 0,8 1,7 Diameter, mm
K - 1,8 mm
NOTE  The core location (F,G) and tilt angle (E) values specified in this document have been calculated to ensure that the
attenuation values for Grade B are met under all circumstances.
a
Contact force 4,9 N minimum. The given end face conditions are for 3 mol % Yttria stabilized Zirconia ZrO ferrule with grain
2
size < 0,35 µm, a Young’s modulus between (200 ± 20) GPa and a Poisson ratio between 0,30 to 0,31 which is normative for
this specification. The relationship between the 3 end face parameters A,B,C is graphically presented in Annex D.

(,−0 795) 2
6 62 3
A = 1988×B −B×+10 B×−10 C× 10− 60

Maximum


b
The radius and fibre undercut shall be measured in all directions over a diameter of 0,25 mm.
c
The negative value refers to fibre protrusion.
d
Centre of ferrule to fibre core eccentricity distribution of a population of terminated plugs shall have a mean less than or equal

to 0,37 µm.
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192
193 Figure 7 — Ferrule end face geometry — Allowable undercut
194 The specified values for E, F and G in Figures 5 and 6, define the parameters that should be met by an individual
195 plug after termination in order to ensure that the specified random attenuation performance grade will be met. The
196 specified random performance however can only be met with a continuous Raleigh distribution of the F parameter.
197 The limit (1,0 µm) and mean (0,37 µm) values for parameter F, of a population of terminated plugs, are based on a
198 statistical mode field diameter mismatch (Formula 1) and are specified to achieve the stated performance.

2

2
2⋅⋅()πτN ⋅WW⋅ ⋅
2⋅a
11 2
2
− +

  
2 22 22
2⋅⋅WW 
λ ⋅+()WW ()WW+
12
12 12
 
199  (1)
Att. (dB)=−10⋅ log ⋅e

 22
WW+

 12 


200 where
W is the mode field radii (µm), i = 1, 2
i
(calculation for the above curve is made with statistical mode field diameter mismatch calculated over the
range: 8,9 ± 0,7µm)
N is the refractive index between the end faces (in this case it is equal with the refractive index of the core);
1
a is the fibre core eccentricity (µm);

is the fibre angle (radian);
τ
λ is the wavelength (Calculation for the above curve is done with 1 310 nm)
16

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oSIST prEN 50377-4-3:2020
prEN 50377-4-3:2020 (E)
201 6.2.4 Pin gauge for adaptor
202
Reference Dimensions Note
 min. mm max.
A 2,499 3 2,499 5 NOTE 1, diameter
B 12,5 13,5
C 1,0 1,5
D 28 32 Angle in degrees
NOTE 1 Envelope condition in accordance with ISO 8015.
NOTE 2 Surface roughness R ≤ 0,1 µm.
a
203 Figure 8 — Pin gauge for adaptor
204 7 Tests
205 7.1 Sample size
206 For the purpose of this specifi
...

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