Seagate ST373554FC, ST3146954FC manual Physical/electrical specifications, AC power requirements

6.0Physical/electrical specifications

This section provides information relating to the physical and electrical characteristics of the drive.

6.1AC power requirements

None.

6.2DC power requirements

The voltage and current requirements for a single drive are sh‘own below. Values indicated apply at the drive connector.

Table 2: DC power requirements for ST3146954FC drives

			1 Gbit mode		2 Gbit mode		4 Gbit mode
		Notes	(Amps)	(Amps)	(Amps)	(Amps)	(Amps)	(Amps)
Voltage			+5V	+12V [2]	+5V	+12V [2]	+5V	+12V [2]
Regulation		[5]	±5%	±5% [2]	±5%	±5% [2]	±5%	±5% [2]
		[1] [7]	0.62	0.78	0.66	0.78	0.70	0.79
Avg idle current DCX
Maximum starting current
(peak DC) DC	3σ	[3]	0.83	1.89	0.93	1.89	0.80	1.86
(peak AC) AC	3σ	[3]	0.99	4.01	1.13	4.00	1.08	3.18
Delayed motor start (max) DC	3σ	[1] [4]	0.55	0.04	0.59	0.04	0.69	0.04
Peak operating current:
		[1] [6]	0.81	0.90	1.01	0.88	0.74	1.04
Typical DCX
Maximum DC	3σ	[1]	0.83	0.92	1.26	0.89	0.76	1.18
Maximum (peak) DC	3σ		1.28	3.04	1.26	3.02	1.24	2.92

Cheetah 15K.4 FC Product Manual, Rev. B 25