Hitachi DK23EA-60, DK23EA-40, DK23EB-40, DK23EB-20, DK23EA-30 DATASHEET

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2.5 inch ATA-5 hard disk drives Capacities: 20, 30, 40, & 60 GB.

Hitachi Travelstar DK23EA /DK23EB hard disk drives

Highlights

 20,30,40 or 60 GB 4200 RPM in 9.5mm high package for maximum capacity slimline portable applications

 20 and 40 GB 5400 RPM in 9.5mm high package for applications that require increased performance

 250G/2ms operating shock

 ATA-5 interface with 2048kB read/write cache

 Ultra DMA mode 5 (100 MB/s max.)supported

 GMR head and ME2PRML read channel technology

 3-bit RISC microprocessor, shock sensor, S.M.A.R.T.

 Fluid Dynamic Bearing Motors for improved acoustic

and shock characteristics

Hitachi Travelstar DK23EA and DK23EB hard disk drives specifications

Product name Travelstar DK23EA Travelstar DK23EB

Model number DK23EA-60, DK23EA-40, DK23EB-40, DK23EB-20 DK23EA-30, DK23EA-20

Performance

Interface ATA-5 ATA-5 Capacity (GB) 60/40/30/20 40/20 Sector size (bytes) 512 512 Number of cylinders 42,0091 42,091 Disks 2/2/1/1 2/1 Data heads 4/3/2/2 4/2

Seek Time (nominal) 1 track (ms) 3 3 Average (ms) 13 13 Full track (ms) 24 24

Average latency (ms) 7.1 5.6 Rotational speed (RPM) 4,200 5,400

Read technology ME

Internal transfer rate (MB/s) 22.1 –42.8/19.4 –37.1/22.1 –42.8/19.4-37.1 27.8 –44.1 Recording density (Max.(Mtpm)) 28.6/25.4/28.6/25.54 24.1 Track density (Mtpm) 2.76 2.48

Interface transfer rate 100MB/sec Ultra DMA mode-5 100MB/sec Ultra DMA mode-5

16.6MB/sec PIO mode-4 16.6MB/sec PIO mode-4 Data buffer (MB)

2 2

Physical size

Height (mm) 9.5 9.0 Width (mm) 70 70 Depth (mm) 100 100 Weight (g) 95/95/91/91 95/91

Power

Requirement +5VDC(±5%) +5VDC(±5%) Dissipation (typical) Seek (max. peak) 0.45 0.45 Spin up (average) 0.90 0.90 Idle (average) 0.14 0.17 Read/Write (average) 0.40 0.42/0.40 Sleep (average) 0.02 0.02 Stand-by (average) 0.03 0.03

Temperature Operating 5° to 55° C (41° to 131° F) 5° to 55° C (41° to 131° F) Non-operating -40° to 70° C (140° to 158° F) -40° to 70° C (140° to 158° F)

Reliability

Error rate (non-recoverable) < 1 per 1013 bits transferred < 1 per 1013 bits transferred Preventive Maintenance Non required Non required

Environmental characteristics

Relative humidity Operating 5% - 90% 5% - 90% Non-operating 5% - 95% 5% - 95%

Maximum wet bulb (non-condensing) Operating 29° C (84.2° F) 29° C (84.2° F) Non-operating 40° C (140° F) 40° C (140° F) Shock (half sine wave) Operating 2,450m/s Non-operating 7.840m/s

Vibration Operating 1G (22 - 500Hz) 1G (22 - 500Hz) Non-operating 5G (22 - 500Hz) 5G (22 - 500Hz)

Acoustic noise (Bels)

Idle (typical) 2.4 2.8

Seek 3.1 3.1

PRML, ID-less format ME2PRML, ID-less format

(250G)or less (2ms) 2,450m/s2 (250G)or less (2ms)

(800G) or less (2ms) 7.840m/s2 (800G) or less (2ms)

Hitachi Global Storage Technologies

For more information

Internet and e-mail:

• www.hgst.com

• N. America: support_usa@hgst.com

• EMEA: support_uk@hgst.com

• Asia Pacic: support_ap@hgst.com

Hitachi hard drive product information:

• US: 1 888 426-5214

• For a complete list of worldwide phone

numbers, visit www.hgst.com/support

Hitachi Global Storage Technologies 5600 Cottle Road San Jose, CA 95193

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Other product names are trademarks or registered trademarks of their respective companies.

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References in this publication to Hitachi Global Storage Technologies products, programs or services do not imply that Hitachi Global Storage Technologies intends to make these available in all countries in which Hitachi Global Storage Technologies operates.

Product information is provided for information purposes only and does not constitute a warranty.

Information is true as of the date of publication and is subject to change. Actual results may vary.

This publication is for general guidance only.

Photographs may show design models.