Environmental Specifications; Ambient Temperature; Temperature Gradient; Humidity - Seagate ST1.2 - Series 8 GB Removable Hard Drive Product Manual

2.8

Environmental specifications

2.8.1

Ambient temperature

Ambient temperature is defined as the temperature of the environment immediately surrounding the drive.
Actual drive case temperature should not exceed 70°C (158°F) within the operating ambient conditions.
Above 1,000 feet (305 meters), the maximum temperature is derated linearly by 1°C every 1000 feet.
Operating 0° to 70°C (41° to 158°F)
Nonoperating –40° to 70°C (–40° to 153°F)
2.8.2

Temperature gradient

Operating 20°C per hour (68°F per hour max), without condensation
Nonoperating 30°C per hour (86°F per hour max), without condensation
2.8.3

Humidity

2.8.3.1 Relative humidity
Operating 5% to 90% noncondensing (30% per hour max)
Nonoperating 5% to 95% noncondensing (30% per hour max)
2.8.3.2 Wet bulb temperature
Operating 33°C (91.4°F max) [1]
Nonoperating 40°C (104°F max) [2]
[1] Operating: Wet bulb temperature is calculated by the operating Temperature and the Relative Humidity levels.
[2] Nonoperating: Wet bulb temperature is calculated by the nonoperating Temperature and the Relative Humidity levels.
2.8.4

Altitude

Operating –60.98 m to 3,048 m (–200 ft to 10,000+ ft)
Nonoperating –60.98 to 12,192 m (–200 ft to 40,000+ ft)
ST1.2 Series Product Manual, Rev. B
(70°C @ case temperature)
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