Seagate ST9120315ASG, ST980313ASG, ST9500325AS manual Drive specifications for 120 and 80 GB models

Table 3:	Drive specifications for 120 and 80 GB models
		ST9120315AS	ST980313AS
Drive specification		ST9120315ASG	ST980313ASG
Formatted Gbytes (512 bytes/sector)*		120	80
Guaranteed sectors		234,441,648	156,301,488
Bytes per sector		512
Physical read/write heads		1
Discs		1
Cache (Mbytes)		8
Recording density in BPI (bits/inch avg)		1,490k
Track density TPI (tracks/inch avg)		265k
Areal density (Gbits/inch2 avg)		394
Spindle speed (RPM)		5,400
Average latency (msec)		5.6
Internal transfer rate (Mbits/sec max)		1,175
I/O data transfer rate		300
(Mbytes/sec max)
ATA data-transfer modes supported		SATA 1.0, Serial ATA Revision 2.6
		PIO modes 0–4
		Multiword DMA modes 0–2
		Ultra DMA modes 0–6
Height (max)		9.5 +/- 0.2 mm (0.374 +/- .0079 inches)
Width (max)		69.85 mm +/- 0.25 mm (2.75 +/- 0.0098 inches)
Length (max)		100.35 + 0.20 / - 0.25 mm (3.957 + 0.0079 / - 0.0098 inches)
Weight (max)		93.5 grams (0.206 lb)
Power-on to ready (sec typical)		3.6
Power-on to ready (sec max)		3.8
Standby to ready (sec typical)		1.8
Standby to ready (sec max)		2
Track-to-track seek time, read (msec typical)		1
Average seek, read (msec typical)		14
Full-stroke seek, read (msec max)		30
Startup current, +5V (max)		1 amp
Seek power (typical)		1.54 watts
Read/write power (typical)		Read: 1.40 watts; Write: 1.78 watts
Idle mode, low power (typical)		0.67 watts
Standby mode		0.20 watts (typical)***
Sleep mode		0.20 watts (typical)***
Voltage tolerance (including noise)		+5V ± 5%
Ambient temperature		0° to 60°C (operating), –40° to 70°C (nonoperating)
Temperature gradient		20°C (operating)
(°C per hour max)		35°C (nonoperating)
Relative humidity		5% to 95% (operating)
		5% to 95% (nonoperating)
Relative humidity gradient		30% per hour max
Wet bulb temperature		37.7 (operating)
(°C max)		40 (nonoperating)
Altitude, operating		–304.8 m to 3,048 m (–1,000 ft to 10,000+ ft)
Altitude, nonoperating		–304.8 m to 12,192 m (–1000 ft to 40,000+ ft)
(meters below mean sea level, max)

Momentus 5400.6 SATA Product Manual, Rev. E 7