Intel Desktop Board DH61AG Technical Product Specification 
76
 
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, 55 ºC ambient.  The MTBF prediction is used to estimate 
repair rates and spare parts requirements.  The MTBF for the board is 298,107 hours. 
2.9  Environmental 
Table 44 lists the environmental specifications for the board. 
Table 44.  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