Environmental Requirements; Temperature; Thermal Shock (Shipping); Humidity - Intel ATX 0.9 Design Manual

Intel ATX Power Supply Design Guide
Version 0.9

5. Environmental Requirements

5.1 Temperature

Operating ambient
Nonoperating ambient
(Maximum rate of change of 20 °C/hr.)

5.2 Thermal Shock (Shipping)

Nonoperating

5.3 Humidity

Operating
Nonoperating

5.4 Altitude

Operating
Nonoperating

5.5 Mechanical Shock

Nonoperating
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+10 °C min
+50 °C max
(At full load, with a maximum rate of change of 5 °C/10
minutes, but no more than 10 °C/hr.)
-40 °C to +70 °C
-40 °C to +70 °C; 15 °C/min
Duration of exposure to temperature extremes for each half
cycle shall be 30 minutes.
To 85% relative humidity (noncondensing)
To 95% relative humidity (noncondensing)
Note: 95% RH is achieved with a dry bulb temperature of
55 °C and a wet bulb temperature of 54 °C.
To 10,000 ft
To 50,000 ft
50 g, trapezoidal input; velocity change 170 in/s.
Three drops on each of six faces are applied to each sample.
dT/dt 30 °C/min; 50 cycles;