Product manual

02468
Seconds
10 12 14 16 18
.5
1
1.5
.5
1.0
5V
Current
12V
Current
CH2 GND
2.0
CH1 GND
T
T1
T2
T4
T3
T6
T5
Channel 1
2 s .5 Amps
Channel 2
2 s .5 Amps
Product Manual - Hawk 2 Family (Wide bus) SCSI-2 (Volume 1), Rev. B 23
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Note. All times and currents are typical. See Table 7.2-1 for maximum current requirements.
Figure 7.2.2-1. Typical ST12400 wide family drive +5 V and +12 V current profile
7.3 Heat/power dissipation
For drives with single ended interface circuits, typical operating power dissipation is 12.1 watts (41.3 BTUs
per hour) of DC power average at nominal voltages. Typical power dissipation under idle conditions is 9.0
watts (30.7 BTUs per hour).
For drives having differential interface circuits, typical operating power dissipation is14.6 watts (49.8 BTUs
per hour) of DC power average at nominal voltages. Typical power dissipation under idle conditions is 10.8
watts (36.8 BTUs per hour).
7.4 Environmental limits
Temperature and humidity values experienced by the drive must be such that condensation does not occur
on any drive part. Altitude and atmospheric pressure specifications are referenced to a standard day at
58.7°F (14.8°C). Maximum Wet Bulb temperature is 82°F (28°C).