Intel DB75EN Technical Product Specification - Page 62
Reliability, Environmental
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Intel Desktop Board DB75EN Technical Product Specification 2.8 Reliability The Mean Time Between Failures (MTBF) prediction is calculated using component and subassembly random failure rates. The calculation is based on the Telcordia SR-332, Issue 2; Method I Case 3 50% electrical stress, 50 ºC ambient. The MTBF prediction is used to estimate repair rates and spare parts requirements. The MTBF data is calculated from predicted data at 50 ºC. The MTBF for the Intel Desktop Board DB75EN is 281,462 hours. 2.9 Environmental Table 37 lists the environmental specifications for the board. Table 37. Environmental Specifications Parameter Temperature Non-Operating Operating Shock Unpackaged Packaged Vibration Unpackaged Packaged Specification -20 °C to +70 °C 0 °C to +55 °C 50 g trapezoidal waveform Velocity change of 170 inches/s² Half sine 2 millisecond Product Weight (pounds) Free Fall (inches)