U Series 5 Family Product Manual, Rev. B

3

 

 

 

 

 

 

 

Drive Specification

ST340823A

ST330621A

ST320413A

ST315311A

ST310211A

 

 

 

 

 

 

 

 

 

 

 

 

Weight (typical)

 

590 grams (1.3 lb)

 

 

 

 

 

 

 

 

 

Track-to-track seek

 

 

 

 

 

 

time (msec typical)

 

1.2 (read) 2.0 (write)

 

 

 

 

 

 

 

 

 

Average seek time

 

 

 

 

 

 

(msec typical)

 

8.9

 

 

 

 

 

 

 

 

 

Average seek read

 

9.9

 

 

 

(msec typical)

 

 

 

 

 

 

 

 

 

 

 

 

Average seek write

 

10.9

 

 

 

(msec typical)

 

 

 

 

 

 

 

 

 

 

 

 

 

Full-stroke seek

 

 

 

 

 

 

time (msec typical)

 

22.0 (read) 24.0 (write)

 

 

 

 

 

 

 

 

 

Average latency

 

 

 

 

 

 

(msec)

 

 

5.55 msec

 

 

 

 

 

 

 

 

 

Power-on to ready

 

 

 

 

 

 

(sec typical)

 

 

10 sec

 

 

 

 

 

 

 

 

 

Standby to ready

 

 

 

 

 

 

(sec typical)

 

 

10 sec

 

 

 

 

 

 

 

 

 

Spindown

 

 

 

 

 

 

(sec typical)

 

 

10 sec

 

 

 

 

 

 

 

 

 

Startup current

 

 

 

 

 

 

(typical) 12V (peak)

 

 

1.4 amps

 

 

 

 

 

 

 

 

Seek power (typical)

 

 

9.6 watts

 

 

 

 

 

 

 

 

Read/Write power

 

 

7.1 watts

 

 

 

 

 

 

 

 

Idle mode (typical)

 

 

4.8 watts

 

 

 

 

 

 

 

 

 

Standby mode

 

 

 

 

 

 

(typical)

 

 

1.4 watts

 

 

 

 

 

 

 

 

Sleep mode (typical)

 

 

1.0 watts

 

 

 

 

 

 

 

 

 

Voltage tolerance

 

5V ± 5%, 12V ± 10%

 

 

(including noise)

 

 

 

 

 

 

 

 

 

 

Ambient tempera-

 

 

 

 

 

 

ture

 

0° to 60°C (op.), –40° to 70°C (nonop.)

 

 

 

 

 

 

 

 

 

Temperature gradi-

 

 

 

 

 

 

ent (°C per hour

 

 

20°C

 

 

max)

 

 

 

 

 

 

 

 

 

 

 

Relative humidity

 

5% to 90% (op.)

 

 

(op. and nonop.)

 

5% to 95% (nonop.)

 

 

 

 

 

 

 

 

 

Relative humidity

 

 

 

 

 

 

gradient

 

30% per hour max