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Intel B43 Express chipset datasheets, specification updates,
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2.7
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 Intel Desktop Board
DB43LD MTBF is 132,790 hours.
2.8
Environmental
Table 29 lists the environmental specifications for the board.
Table 29. Intel Desktop Board DB43LD Environmental Specifications
Parameter
Temperature
Non-Operating
Operating
Shock
Unpackaged
Packaged
Vibration
Unpackaged
Packaged
Specification
-20 °C to +70 °C at 95% humidity
0 °C to +50 °C at 90% humidity
50 g trapezoidal waveform
Velocity change of 170 inches/second²
Half sine 2 millisecond
Product weight (pounds)
<20
21-40
41-80
81-100
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)
10 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
Refer to
Section 1.2, page 14
http://www.intel.com/products/chip
sets/index.htm
Free fall (inches)
Velocity change
(inches/sec²)
36
167
30
152
24
136
18
118
Technical Reference
61
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