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
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)
1
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
2
PRML, ID-less format ME2PRML, ID-less format
2
(250G)or less (2ms) 2,450m/s2 (250G)or less (2ms)
2
(800G) or less (2ms) 7.840m/s2 (800G) or less (2ms)
Hitachi Global Storage Technologies
For more information
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Hitachi hard drive product information:
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For a complete list of worldwide phone
numbers, visit www.hgst.com/support
© Copyright Hitachi Global Storage Technologies 2003
Hitachi Global Storage Technologies 5600 Cottle Road San Jose, CA 95193
Produced in the United States 5/03, revised 7/03 All rights reserved
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Space reserved for firmware
TravelstarTM is a trademark of Hitachi Global Storage Technologies.
Other product names are trademarks or registered trademarks of their respective companies.
Adaptive Battery Life Extender, and Drive Fitness Test are trademarks of Hitachi Global Storage Technologies.
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.
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