Intel 945GZ ユーザーズマニュアル

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Reference Thermal Solution 
 
 
24  
 
Thermal and Mechanical Design Guidelines 
4.4 
Environmental Reliability Requirements 
The environmental reliability requirements for the reference thermal solution are 
shown in Table 4. These should be considered as general guidelines. Validation test 
plans should be defined by the user based on anticipated use conditions and resulting 
reliability requirements.  
Table 4.  Reference Thermal Solution Environmental Reliability Requirements 
Test
1
 Requirement  Pass/Fail 
Criteria
2
  
Mechanical 
Shock 
• 3 drops for + and - directions in each of 3 
perpendicular axes (i.e., total 18 drops). 
• Profile: 50 G trapezoidal waveform, 11 ms duration, 
4.3 m/s [170 in/s] minimum velocity change. 
• Setup: Mount sample board on test fixture. Include 
550 g processor heatsink. 
Visual\Electrical 
Check 
Random 
Vibration 
• Duration: 10 min/axis, 3 axes 
• Frequency Range: 5 Hz to 500 Hz  
• Power Spectral Density (PSD) Profile: 3.13 g RMS 
Visual/Electrical 
Check 
Thermal 
Cycling 
• -40 °C to +85 °C, 900 cycles 
Thermal 
Performance 
Unbiased 
Humidity 
• 85 % relative humidity / 55 °C, 500 hours 
Visual Check 
NOTES:  
1.  The above tests should be performed on a sample size of at least 12 assemblies from 3 
different lots of material. 
2.  Additional Pass/Fail Criteria may be added at the discretion of the user. 
 
 
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