DS EN 4639-101:2008 Aerospace Series - Connectors, Optical, Rectangular, Modular, Multicontact, 1,25 Diameter Ferrule, With Removable Alignment Sleeve Holder - Part 101: Optical Contact For Cable En 4641-100 - Operating Temperatures Between -65 Degrees C And 125 Degrees C - Product Standard Describes the performance and dimensions of optical physical contact for EN 4641-100 cable specification.