Seagate ST3250823ACE, ST3200826ACE, ST3300831ACE, ST3400832ACE manual Power specifications

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2.7Power specifications

The drive receives DC power (+5V and +12V) through a four-pin standard drive power connector.

2.7.1Power consumption

Power requirements for the drives are listed in the table on page 7. Typical power measurements are based on an average of drives tested, under nominal conditions, using +5.0V and +12.0V input voltage at 25°C ambient temperature.

•Spinup power

Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating speed.

•Seek mode

During seek mode, the read/write actuator arm moves toward a specific position on the disc surface and does not execute a read or write operation. Servo electronics are active. Seek mode power represents the worst- case power consumption, using only random seeks with read or write latency time. This mode is not typical and is provided for worst-case information.

•Operating power and current

Operating power is measured using a standard Consumer Storage Profile.

•Idle mode power

Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in a random track location.

•Standby mode

During Standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/ write electronics are in power-down mode.

Table 3:	DC power requirements

Power dissipation (watts)		Average	5V typ	12V typ
Example: ST3400832ACE		(watts, 25° C)	amps	amps

Spinup		—	—	2.0 (peak)

Idle		6.9	0.353	0.519

Operating (Consumer Storage Profile)		7.2	0.500	0.400

Seeking		8.6	0.318	0.585

Standby		0.80	0.045	0.013

Sleep		0.80	0.045	0.013

DB35 Series Product Manual, Rev. B

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Contents DB35 Series Page DB35 Series Page Revision status summary sheet DB35 Series Product Manual, Rev. B Contents DB35 Series Product Manual, Rev. B List of Figures Viii DB35 Series Product Manual, Rev. B DB35 Series IntroductionDB35 Series Product Manual, Rev. B Drive specifications Drive specificationsSpecification summary table Altitude, nonoperating To 12,192 m Below mean sea level, max Recording and interface technology LBA modeFormatted capacity Seek time Physical characteristicsStart/stop times Typical seek timesPower specifications Voltage tolerance Typical current profileConducted noise Environmental specifications Wet bulb temperature Temperature gradientHumidity Relative humidity AltitudeElectromagnetic immunity AcousticsNonoperating vibration Operating acousticsReliability Safety certificationAgency certification Electromagnetic compatibilityAustralian C-Tick N176 Environmental protectionFCC verification European Union Restriction of Hazardous Substances RoHSDB35 Series Product Manual, Rev. B Handling and static discharge precautions Configuring and mounting the driveBreather filter hole location Breather filter hole precautionsMaster/slave configuration Jumper settingsDrive as master with a non-ATA-compatible slave Cable-select optionUltra ATA/100 cable Drive mountingMounting dimensions-top, side and end view DB35 Series Product Manual, Rev. B ATA interface ATA interface signals and connector pinsCommand name Command code in hex Supported ATA commandsF6H Word Description Value Identify Device commandXxxxH Description if bit is set to Bit Word 4 S.M.A.R.T. commands Set Features commandCode in features Register A.R.T. command Internet MySeagate Reseller.seagate.com Seagate Technology support servicesPresales Support Technical SupportAuthorized Service Centers Warranty ServiceAmericas +1-405-324-47301 +1-405-324-4704 Call Center Toll-free Direct dialAmericas SEAGATE2 +1-405-324-47002 +1-405-324-3339 Call Center Toll-free Direct dial FAX / E-mailToll-Free Support Numbers FAX Services-All Europe toll callCall Center Presales and Technical Support Warranty Service Asia/Pacific Support Services DB35 Series Product Manual, Rev. B Numerics IndexPage Page DB35 Series Product Manual, Rev. B Page Seagate Technology LLC