This specification is designed for use in conjunction with other families of documents such as IEEE Std1101.x, IEEE Standard for Mechanical Core Specifications for Microcomputers; IEEE Std 896.x, IEEE Standard Backplane Bus Specification for Multiprocessor Architectures: Futurebus+; IEEE Std 1596-1992, IEEE Standard for Scalable Coherent Interface (SCI); IEEE Std 1014-1987, IEEE Standard for a Versatile Backplane Bus: VMEbus; IEEE Std 1296-1987, IEEE Standard for a High-Performance Synchronous 32-Bit Bus: MULTIBUS®2 II; and IEEE Std 1301-1991, IEEE Standard for a Metric Equipment Practice for Microcomputers—Coordinating Document. This standard is intended to be used as a core specification. It contains the minimum environmental withstand conditions that are applicable to computer modules/circuit boards and all of the components attached to those modules. It has been created to provide general environmental withstand conditions for one or more of the previously listed computer buses or interconnect standards. It may also apply to electronic equipment in general.