Intel D845EPI Intel Desktop Board D845EPI Technical Product Specification - Page 61

Reliability, 14 Environmental

Page 61 highlights

Technical Reference 2.13 Reliability The Mean Time Between Failures (MTBF) prediction is calculated using component and subassembly random failure rates. The calculation is based on the Bellcore Reliability Prediction Procedure, TR-NWT-000332, Issue 4, September 1991. The MTBF prediction is used to estimate repair rates and spare parts requirements. The MTBF data is calculated from predicted data at 55 ºC. The Desktop Board D845EPI MTBF is 131566.83 hours. 2.14 Environmental Table 35 lists the environmental specifications for the Desktop Board D845EPI. Table 35. Desktop Board D845EPI Environmental Specifications Parameter Specification Temperature Non-Operating -40 °C to +70 °C Operating 0 °C to +55 °C Shock Unpackaged 50 g trapezoidal waveform Velocity change of 170 inches/second Packaged Half sine 2 millisecond Product Weight (pounds) Free Fall (inches) Velocity Change (inches/sec)

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Technical Reference
61
2.13 Reliability
The Mean Time Between Failures (MTBF) prediction is calculated using component and
subassembly random failure rates.
The calculation is based on the Bellcore Reliability Prediction
Procedure, TR-NWT-000332, Issue 4, September 1991.
The MTBF prediction is used to estimate
repair rates and spare parts requirements.
The MTBF data is calculated from predicted data at 55
º
C.
The Desktop Board D845EPI MTBF is
131566.83 hours.
2.14 Environmental
Table 35 lists the environmental specifications for the Desktop Board D845EPI.
Table 35.
Desktop Board D845EPI Environmental Specifications
Parameter
Specification
Temperature
Non-Operating
-40
°
C to +70
°
C
Operating
0
°
C to +55
°
C
Shock
Unpackaged
50 g trapezoidal waveform
Velocity change of 170 inches/second
Packaged
Half sine 2 millisecond
Product Weight (pounds)
Free Fall (inches)
Velocity Change (inches/sec)
<20
36
167
21-40
30
152
41-80
24
136
81-100
18
118
Vibration
Unpackaged
5 Hz to 20 Hz:
0.01 g
²
Hz sloping up to 0.02 g
²
Hz
20 Hz to 500 Hz:
0.02 g
²
Hz (flat)
Packaged
10 Hz to 40 Hz:
0.015 g
²
Hz (flat)
40 Hz to 500 Hz:
0.015 g
²
Hz sloping down to 0.00015 g
²
Hz