S
EAGATE
L
APTOP
T
HIN
HDD P
RODUCT
M
ANUAL
, R
EV
. K
4
D
RIVE
S
PECIFICATIONS
2.0
Drive Specifications
Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power. For convenience, the
phrases
the drive
and
this drive
are used throughout this manual to indicate the following drive models:
The specification summaries listed in the following tables are for quick reference. For details on specification measurement or definition,
refer to the appropriate section of this manual.
Table 1
Drive Specifications Summary
Drive Specification
ST500LT012
ST500LT015
ST500LT025
ST500LT034
ST320LT012
ST320LT015
ST320LT025
ST320LT032
ST250LT012
ST250LT015
ST250LT025
ST250LT028
Formatted capacity
(1)
500 GB
320 GB
250 GB
Guaranteed sectors
976,773,168
625,142,448
488,397,168
Heads
2
Disks
1
Bytes per sector
512 (logical) / 4096 (physical)
Recording density
1875 Kb/in
Track density
375 Ktracks/in avg
Areal density
670 Gb/in
2
avg
Spindle speed
5400 RPM
Sustained data transfer rate OD
100 MB/s max
I/O data-transfer rate
600 MB/s max
ATA data-transfer modes supported
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
Cache buffer
16 MB
Height
6.8 +/- 0.2 mm (0.268 +/-.008 in)
Width
69.85 +/- 0.25 mm (2.750 +/- 0.010 in)
Length
100.35 +0.20 / -0.25 mm (3.951 +0.008 / -0.010 in)
Weight (typical)
<95 g (0.209 lb)
Average latency
5.6 ms
Startup current (typical) 5V (peak)
1.0 A
Voltage tolerance (including noise)
5V ± 5%
Operating temperature
0° to 60°C
Nonoperating temperature
(Ambient)
–40° to 70°C
Temperature gradient (max)
20°C per hour max (operating)
35°C per hour max (nonoperating)
Relative humidity
5% to 95% (operating)
5% to 95% (nonoperating)
Relative humidity gradient
30% per hour max
