This standard specifies the characteristics of receptacle sub-assemblies for single channel fibre optic receptacle connectors for aerospace series single core optical cable in accordance with EN 4532, operating temperature up to 150 °C. Connector interface dimensions, table of tests and qualification approval requirements, are contained in the Technical Specification EN 3733-001. EN 3733-002, List of product standards, includes the listings of product types, codification and applicable combinations of product types.