EN IEC 63267-3-81 EUROPEANSTANDARD NORMEEUROPEENNE EUROPAISCHENORM August 2025 ICS 33.180.20 English Version Fibre optic interconnecting devices and passive components Connectoroptical interfacesfor enhancedmacrobend multimodefibre-Part3-81:Connectorparameters of physically contacting 5o μm core diameter fibres - Non-angled polyphenylene sulphide rectangularferrules with a single row of 12, 8, 4, or 2 fibres for reference connector applications (IEC 63267-3-81:2025) Dispositifs d'interconnexion et composants passifs Lichtwellenleiter - Verbindungselemente und passive fibroniques - Interfaces optiques des connecteurs pour Bauteile - Optische Schnittstellen von Lichtwellenleiter- fibres muitimodales ameliorees en macrocourbures -Partie Steckverbindern fur verstarkte Makrobend- 3-81: Parametres de connexion des fibres d'un diametre de Mehrmodenfasern - Teil 3-81: Parameter von coeur de 50 μm en contact physique -Ferrules Steckverbindern mit Fasern mit 50 μm Kerndurchmesser rectangulaires non inclinees en polysulfure de phenylene mit physikalischem Kontakt - Nicht abgeschragte avec une seule rangee de 12, 8, 4 ou 2 fibres, pour les rechteckige Polyphenylensulfid- Ferrule mit einer einzigen applications de connecteurs de reference (IEC 63267-3- Reihe von 12, 8, 4 oder 2 Fasern fur die Anwendung mit 81:2025) Referenzsteckverbindern (IEC 63267-3-81:2025) This European Standard was approved by CENELEC on 2025-07-30. 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 Centreor to any CENELECmember. 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, Turkiye and the United Kingdom. CENELEC European Committeefor Electrotechnical Standardization Comité Europeen de Normalisation Electrotechnique Europaisches Komitee fir Elektrotechnische Normung CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels Ref. No. EN IEC 63267-3-81:2025 E EN IEC 63267-3-81:2025 (E) Europeanforeword The text of document 86B/5037/FDIS, future edition 1 of IEC 63267-3-81, prepared by SC 86B "Fibre optic interconnecting devices and passive components"of IEC/TC 86"Fibre optics" was submitted to The following dates are fixed: (dop) 2026-08-31 level by publication of an identical national standard or by endorsement latest date by which the national standards conflicting with the (dow) 2028-08-31 documenthavetobewithdrawn 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. Endorsementnotice The text of the International Standard IEC 63267-3-81:2025 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standard indicated: IEC 61754-5 NOTE Approved as EN 61754-5 IEC61754-25 NOTEApprovedasEN61754-25 NOTE Approved as EN IEC 63267