UNE-EN 4626-201
Aerospace series - Connectors, optical, rectangular, multicontact, rack and panel, Quadrax cavity, 2,5 mm diameter ferrule - Operating temperatures - 65 °C to 125 °C (cable dependent) - Flush contacts - Part 201: Optical contact (sub-assembly) for receptacle - Product standard (Endorsed by AENOR in March of 2009.)