Reliability; Environmental; Desktop Board D845Ebg2/D845Ept2 Environmental Specifications - Intel D845EPT2 Specification

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 MTBF calculations for the
Desktop Boards are as follows:
•
Desktop Board D845EBG2 MTBF: 83,579.89402 hours
•
Desktop Board D845EPT2 MTBF: 85,468.91666 hours

2.14 Environmental

Table 53 lists the environmental specifications for the Desktop Boards D845EBG2 and
D845EPT2.
Table 53.

Desktop Board D845EBG2/D845EPT2 Environmental Specifications

Parameter
Temperature
Non-Operating
Operating
Shock
Unpackaged
Packaged
Vibration
Unpackaged
Packaged
Specification
-40 °C to +70 °C
0 °C to +55 °C
50 g trapezoidal waveform
Velocity change of 170 inches/second
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
Free Fall (inches) Velocity Change (inches/sec)
36 167
30 152
24 136
18 118
Technical Reference
85