IBM Deskstar 120 GXP, Specifications

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6.5 DC power requirements
The following voltage specifications apply at the power connector of the drive. Damage to the drive
electronics may result if the power supply cable is connected or disconnected while power is being applied
to the drive (no hot plug/unplug is allowed). Connections to the drive should be made in a low voltage, iso-
lated secondary circuit (SELV). There is no special power on/off sequencing required.
6.5.1 Input voltage
–0.3 to 15V 12V +10% –8% +12 Volts Supply
–0.3 to 7V 5V ± 5% +5 Volts Supply
Absolute max
spike voltage
1
During run and spin up Input voltage
Figure 53. Input voltage
Note: To avoid damage to the drive electronics, power supply voltage spikes must not exceed specifi-
cations.
6.5.2 Power supply current (typical)
0.9 1 15 3 150 Sleep average
1.0 1 15 3 160 Standby average
86 1867 20 740 Start up (max)
46 820 22 790 Silent R/W peak
8.0
36 470 10 470 Silent R/W average
110 1800 22 790 Random R/W peak
9.4
42 590 10 470
Random R/W average
2
46 820 19 600 Seek peak
7.5
42 470 6 380
Seek average
1
27 240 6 50 Unload idle ripple
4.2
34 280 5 160 Unload idle average
23 230 6 50 Low RPM idle ripple
3.4
26 220 5 160 Low RPM idle
30 370 26 370 Idle ripple (peak-to-peak)
6.2
46 390 5 310 Idle average
Std Dev Pop Mean Std Dev Pop Mean (values in milliamps. RMS)
Total
[W]
+12 Volts [mA] +5 Volts [mA]
Power supply current of
120 GB and 100 GB models
Figure 54. Power supply current of 120 GB and 100 GB models
Except for a peak of less than 100
µ
s duration
1
Random seeks at 40% duty cycle
2
Seek duty = 30%, W/R duty = 45%, Idle Duty = 25%
Deskstar 120GXP hard disk drive specifications
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