Seagate 7200-RPM, 5400-RPM manual Drive specifications, Specification summary table

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3.0Drive specifications

Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power.

3.1Specification summary table

The specifications listed in this table are for quick reference. For details on specification measurement or definition, see the appropriate section of this manual.

Table 1: Drive specifications for 750, 640 and 500 GB models

		ST9640424AS	ST9750422AS	ST9500424AS
	ST9750423AS	ST9640423AS	ST9750420AS	ST9500423AS
Drive specification	ST9750423ASG	ST9640423ASG	ST9750420ASG	ST9500423ASG

Formatted GB	750	640	750	500

Guaranteed sectors	1,465,149,168	1,250,263,728	1,465,149,168	976,773,168

Bytes per sector (logical/physical)	512/4K

Physical read/write heads	4			4/3

Discs	2

Cache (MB)	16

Recording density in BPI (max)	1,586k

Track density TPI (tracks/inch max)	341k

Areal density (Gb/in2 max)	541
Spindle speed (RPM)	5400		7200

Average latency (ms)	5.6		4.2

Internal transfer rate (Gb/s max)	1130	950	1305	1305

I/O data transfer rate (Gb/s max)	3.0

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	9.5 +/- 0.2 mm (0.370 +/-.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	115 g (0.254 lb)

Power-on to ready (sec typical)	3.6		4.0

Standby to ready (sec typical)	2.5		3.0

Track-to-track seek time, read (ms typ)	1.5

Average seek, read (ms typical)	11.0

Average seek, write (ms typical)	13.0

Startup current, +5V (max)	1.0A

Seek power (typical)	1.9W		2.5W

Read power (typical)	1.6W		2.1W

4	Momentus Product Manual, Rev. B

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Contents Momentus Standard models Free-fall sensor modelsRevision history Revision Date Sheets affected or commentsContents Momentus Product Manual, Rev. B List of Figures Page Seagate Technology support services Seagate Online Support and ServicesIntroduction Standard models Free Fall Protection modelsAbout the Serial ATA interface Specification summary table Drive specificationsDrive specifications for 750, 640 and 500 GB models Altitude, nonoperating Formatted capacity Default logical geometryLBA mode Physical organizationDrive specification Physical characteristicsRecording and interface technology Typical seek times Seek timeStart/stop times Typical seek times ms ReadPower specifications Typical current profile Conducted noise Voltage toleranceActive mode Power-management modesPower management modes Idle modeEnvironmental specifications Nonoperating shock ShockOperating shock VibrationElectromagnetic immunity Drive A-weighted Sound Power Levels SWL, BAAcoustics Test for Prominent Discrete Tones PDTsReliability Free Fall Protection featureSafety certification Agency certificationAustralian C-Tick N176 Korean RRLFCC verification European Union Restriction of Hazardous Substances RoHS Environmental protectionCorrosive environment China Restriction of Hazardous Substances RoHS DirectiveConfiguring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions-top, side and end view Drive mountingSerial ATA Sata interface Hot-Plug compatibilitySignal Serial ATA device plug connector pin definitionsSerial ATA connector pin definitions Pin Function DefinitionSupported ATA commands Command name Command code in hex ATA-standard commandsCommand name Command code in hex ATA-standard security commandsIdentify Device command Word Description ValueXxxxH Fffeh Description if bit is set to Bit Set Features command Set Features command valuesA.R.T. commands 3 S.M.A.R.T. commandsCode in features register A.R.T. command Momentus Product Manual, Rev. B Index ITE TPI Momentus Product Manual, Rev. B Page Seagate Technology LLC