This standard covers a range of rectangular connectors with round contacts. The contacts have crimp terminations. Connector polarization is achieved by the trapezoidal configuration of the shell. Applications for this range of connectors include uses in telecommunication and data-processing equipment and other electronic devices employing similar techniques. This standard covers only removable contacts with closed crimp barrels. Refer to IEC 807-2 for a specification on fixed solder contact types. This standard shall be used in conjunction with the following I E C publications: Publications Nos. 50(581) (1978): International Electrotechnical Vocabulary (IEV), Chapter 581: Electromechanical components for electronic equipment. 352-2 (1990): Solderless connections, Part 2: Solderless crimped connections. General requirements, test methods and practical guidance. 512-1 (1984): Electromechanical components for electronic equipment; basic testing procedures and measuring methods, Part 1: General. 512-2 (1985): Part 2: General examination, electrical continuity and contact resistance tests, insulation tests and voltage stress tests. 512-3 (1976): Part 3: Current-carrying capacity tests. 512-4 (1976): Part 4: Dynamic stress tests. 512-5 (1977): Part 5: Impact tests (free components), static load tests (fixed components), endurance tests and overload tests. 512-6 (1984): Part 6: Climatic tests and soldering tests. 512-7 (1978): Part 7: Mechanical operating tests and sealing tests. 512-8 (1984): 807-1 (1985): 807-2 (1985): Part 8: Connector tests (mechanical) and mechanical tests on contacts and terminations. Rectangular connectors for frequencies below 3 MHz, Part 1: General requirements and guide for the preparation of detail specifications. Part 2: Detail specification for a range of connectors with round contacts. Fixed solder contact types.