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U4 Family Product Manual, Rev. D 3
Track-to-track seek time
(msec typical) 2.0 (read), 2.75 (write)
Average seek time (msec
typical) 10.5 (read), 11.5 (write)
Full-stroke seek time
(msec typical) 24.0 (read), 26.0 (write)
Average latency (msec) 5.56 msec
Power-on to ready
(sec typical) 8 sec
Standby to ready
(sec typical) 7 sec
Startup current (typical):
12V (peak)
1.5 amps
Seek power (typical) 7.0 watts
Idle mode (typical) 3.1 watts
Standby mode (typical) 0.8 watts
Sleep mode (typical) 0.8 watts
Voltage tolerance
(including noise) 5V
±
5%, 12V
±
10%
Ambient temperature 0° to 55°C (op.), –40° to 70°C (nonop.)
Temperature gradient
(°C per hour max) 20°C
Relative humidity
(op. and nonop.)
5% to 90% (op.)
5% to 95% (nonop.)
Relative humidity
gradient 30% per hour max
Wet bulb temperature
(°C max) 29.4 (op.), 40.0 (nonop.)
Altitude, operating –61 m to 3,048 m (–200 ft to 10,000
+
ft)
Altitude, nonoperating –122 m to 12,192 m (–400 ft to 40,000
+
ft)
Shock (Gs at 2 msec)
operating
nonoperating
63 Gs
300 Gs
Vibration, operating 0.5 Gs (0 to peak, 5–350 Hz)
Drive Specification
ST32112A ST34311A ST36421A ST38421A