BS IEC 796-3 is the third part of the multiple series that is applicable to an interface used to connect microprocessor system components by means of the pin and socket (indirect) connector type backplane.
Note: The height of the components on the front of each Eurocard shall not exceed 15.3 mm (0.6 in).
BS IEC 796-3 on mechanical and pin configuration with pin and socket (indirect) connectors is useful for:
Eurocard is a printed circuit board that is plugged into the backplane and communicates with other Eurocards installed in the same backplane.
BS IEC 796-3 deals with the electrical and mechanical interfaces to allow various microprocessor system components to interact with each other. The interface bus serves as a parallel transfer and utility signal interconnect for closely coupled system components. BS IEC 796-3 specifies one functional description and two alternative mechanical standards.
Overall, BS IEC 796-3 will help you to provide information and to assure that the bus backplane, card racks, and printed circuit boards are mechanically compatible.
IEC 60796-3:1990