Deskstar 7K500 and Deskstar E7K500 Hard Disk Drive Specification
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7.2.2 Corrosion test
The drive shows no sign of corrosion inside and outside of the hard disk assembly and is functional after being sub-
jected to seven days at 50°C with 90% relative humidity.
7.3 DC power requirements
Damage to the drive electronics may result if the power supple cable is connected or disconnected to the legacy
power connector while power is being applied to the drive (no hot plug/unplug is alloweed). If SATA power supply
cable is connected or disconnected to the SATA power connector, hot plug/unplug is allowed.
7.3.1 Input voltage
1
To avoid damage to the drive electronics, power supply voltage spikes must not exceed specifications.
7.3.2 Power supply current (typical)
Except for a peak of less than 100 ms duration
1
Random seeks at 40% duty cycle
2
Seek duty = 30%, W/R duty = 45%, Idle duty = 25%
Table 46: Input voltage
Input voltage
supply
During run and spin up
Absolute max spike
voltage
1
Supply rise time
+5 V 5 V ± 5% –0.3 to 7 V 0 to 5 sec
+12 V 12 V + 10% –8% –0.3 to 15 V 0 to 5 sec
Table 47: Power supply current of PATA model
Power supply current of PATA
model
+5 Volts [mA] +12 Volts [mA] Total
[W]
(values in milliamps. RMS) Pop Mean Std Dev Pop Mean Std Dev
Idle average 380 12 590 12 9.0
Idle ripple (peak-to-peak) 330 40 630 20
Low RPM idle 200 7 280 10 4.4
Low RPM idle ripple 220 30 380 20
Unload idle average 200 7 480 13 6.8
Unload idle ripple 220 35 600 20
Random R/W average
1
560 9 850 20 13.0
Random R/W peak 1420 50 2100 60
Silent R/W average 610 9 660 15 11.0
Silent R/W peak 1420 50 1350 40
Start up (max) 1100 50 2000 75
Standby average 150 9 20 3 1.0
Sleep average 100 8 20 3 0.7
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