UNE-EN 4626-101
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 101: Optical contact (sub-assembly) for plug - Product standard (Endorsed by AENOR in May of 2008.)