Intel Pentium 4 Processor on 90 nm Process Thermal and Mechanical Design Guidelines

Intel® Thermal/Mechanical Reference Design Information
R
40 Intel
®
Pentium
®
4 on 90 nm Process Thermal Design Guide
Figure 11. Random Vibration PSD
0.001
0.01
0.1
1 10 100 1000
Frequency (Hz)
PSD (g^2/Hz)
3.13GRMS (10 minutes per axis)
5 Hz
500 Hz
(5, 0.01)
(20, 0.02)
(500, 0.02)
4.1.3.1.2 Shock Test Procedure
Recommended performance requirement for a motherboard:
• Quantity: 3 drops for + and - directions in each of 3 perpendicular axes
(i.e., total 18 drops).
• Profile: 50 G trapezoidal waveform, 170 in./sec minimum velocity change
(resulting duration: 9–11 ms).
• Setup: Mount sample board on test fixture.
Figure 12. Shock Acceleration Curve
0
10
20
30
40
50
60
0 2 4 6 8 10 12
Time (milli-seconds)
A
c
c
e
l
e
r
a
t
i
o
n
(g)