Intel DQ77CP Technical Product Specification - Page 64

Reliability, Environmental

Page 64 highlights

Intel Desktop Board DQ77CP 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 DQ77CP is 284,618 hours. 2.9 Environmental Table 36 lists the environmental specifications for the board. Table 36. 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)

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Intel Desktop Board DQ77CP Technical Product Specification
64
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
DQ77CP is 284,618 hours.
2.9
Environmental
Table 36 lists the environmental specifications for the board.
Table 36.
Environmental Specifications
Parameter
Specification
Temperature
Non-Operating
-20
°
C to +70
°
C
Operating
0
°
C to +55
°
C
Shock
Unpackaged
50 g trapezoidal waveform
Velocity change of 170 inches/s²
Packaged
Half sine 2 millisecond
Product Weight (pounds)
Free Fall (inches)
Velocity Change (inches/s²)
<20
36
167
21-40
30
152
41-80
24
136
81-100
18
118
Vibration
Unpackaged
5 Hz to 20 Hz:
0.01 g² Hz sloping up to 0.02 g² Hz
20 Hz to 500 Hz:
0.02 g² Hz (flat)
Packaged
5 Hz to 40 Hz:
0.015 g² Hz (flat)
40 Hz to 500 Hz:
0.015 g² Hz sloping down to 0.00015 g² Hz