Seagate Constellation ES Product Manual page 32

Table 3:
1TB drive (Standard & SED model)
Voltage
Regulation
Avg idle current DCX
Advanced idle current
Idle_A
Idle_B
Idle_C/ Standby_Y
Standby_Z
Transition current
Idle_A - Active
Idle_B - Active
Idle_C - Active
Standby - Active
Maximum starting current
(peak DC) DC
(peak AC) AC
Delayed motor start (max) DC
Peak operating current (random read):
Typical DCX
Maximum DC
Maximum (peak) DC
Peak operating current (random write)
Typical DCX
Maximum DC
Maximum (peak) DC
Peak operating current (sequential read)
Typical DCX
Maximum DC
Maximum (peak) DC
Peak operating current (sequential write)
Typical DCX
Maximum DC
Maximum (peak) DC
24
DC power requirements
3.0Gb mode
Notes
+5V
[5] ±5%
[1] [7] 0.35
0.35
0.24
0.24
0.25
0.60
0.64
0.60
0.90
3σ [5] 0.57
3σ [5] 0.92
3σ [1] [6] 0.39
[1] [6] 0.43
3σ [1] 0.44
3σ 1.17
0.53
3σ 0.55
3σ 1.30
0.77
3σ 0.80
3σ 1.06
0.94
3σ 1.02
3σ 1.37
Constellation ES.1 SAS Product Manual, Rev. E
6.0Gb mode
(Amps) (Amps)
+12V [4] +5V
±5% [2] ±5%
0.28 0.36
0.28 0.36
0.25 0.24
0.14 0.24
0.02 0.25
1.52 0.60
1.43 0.60
2.04 0.60
2.50 0.88
1.93 0.58
2.62 1.08
0.02 0.39
0.45 0.44
0.48 0.45
1.56 1.14
0.35 0.53
0.38 0.55
1.59 1.32
0.27 0.77
0.28 0.81
0.64 1.09
0.27 0.94
0.28 1.03
0.54 1.36
+12V [4]
±5% [2]
0.28
0.28
0.25
0.14
0.02
1.50
1.40
2.11
2.49
1.93
2.55
0.02
0.47
0.50
1.55
0.36
0.38
1.54
0.27
0.29
0.51
0.27
0.29
0.48