Reliability; Environmental - Intel BLKDZ68DB Technical Product Specification

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 Telcordia SR-332,
Method I Case 1 50% electrical stress, 55 ºC ambient. 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 for the board is 240,568 hours.
2.8

Environmental

Table 35 lists the environmental specifications for the board.
Table 35. 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)
<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)
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
Free Fall (inches) Velocity Change (inches/s²)
36 167
30 152
24 136
18 118
Technical Reference
59