Seagate ST3400755FC, ST3300955FC 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 shown below. Values indicated apply at the drive connector. Notes are shown following table 3.

Table 2: DC power requirements for ST3400755FC model

			1 Gbit		2 Gbit		4 Gbit
		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]	0.70	0.35	0.72	0.35	0.78	0.35
Avg idle current DCX
Maximum starting current
(peak DC) DC	3σ	[3]	0.82	1.67	0.84	1.67	0.90	1.67
(peak AC) AC	3σ	[3]	1.09	3.20	1.17	3.23	1.15	3.24
Delayed motor start (max) DC	3σ	[1] [4]	0.59	0.03	0.61	0.04	0.67	0.04
Peak operating current:
		[1] [6]	0.72	0.66	0.75	0.67	0.81	0.67
Typical DCX
Maximum DC	3σ	[1]	0.74	0.73	0.76	0.74	0.83	0.74
Maximum (peak) DC	3σ		1.34	2.58	1.36	2.62	1.46	2.52

Cheetah NS FC Product Manual, Rev. A 23