DIN EN 61755-3-5:2014-07

This part of IEC 61755 defines dimensional limits of an optical connector with a 2,5 mm and a 1,25 mm diameter cylindrical composite ferrule using Cu - Ni alloy as fibre surrounding material for optical interface to meet specific requirements for PC fibre-to-fibre interconnection as defined in IEC 61755-2-1. The composite ferrule uses different materials in the end-face contact zone and in the ferrule to sleeve contact zone. The specified materials for each zone are Zirconia (ZrO2) for the ferrule to sleeve contact zone and Cu-Ni-alloy for the end-face contact zone. Ferrules made from the material specified in this document are suitable for use in categories C, U and O as defined in IEC 61753-1.