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1
One GB is equal to one billion bytes when referring to hard drive
capacity. Accessible capacity may be less.
2
Upper 736KB out of 8MB used for firmware
3
Excludes command overhead
Specifications
How to read the Travelstar model number
HTS542525K9A300 = 250 GB, SATA 3 Gb/s
H = Hitachi
T = Travelstar
S = Standard (vs C for Compact)
54 = 5400 RPM
25 = Full capacity — 250 GB
25 = Capacity this model, 25 =250 GB (20 = 200 GB,
16 = 160 GB, 12 = 120 GB, 80 = 80 GB)
K = Generation code
9 = 9.5mm z-height
A3 = Interface, SATA 3 Gb/s (SA = 1.5 Gb/s)
0 = Reserved
0 = Reserved
Information and Technical Support
www.hitachigst.com (Main Web site)
www.hitachigst.com/partners (Partner Web site)
North America
support_usa@hitachigst.com
Toll free: 1 888 426-5214, Direct: 1 507 322-2370
Asia Pacific
support_ap@hitachigst.com / 65 6840 9595
EMEA and UK
support_uk@hitachigst.com / 44 20 7133 0032
Germany
support_uk@hitachigst.com / 49 6929 993601
Program Support
Partners First™ Program
channelpartners@hitachigst.com
Hitachi quality and service
Hitachi Travelstar mobile hard disk drives are
designed to the highest quality standards and
contain field-proven components. Hitachi
provides worldwide technical support and
integration services to enable global customers
to bring their products to market quickly.
Hitachi Global Storage Technologies’ trademarks are authorized for use in countries and jurisdictions in which Hitachi Global Storage
Technologies has the right to use, market and advertise the brands. The Travelstar trademark is authorized for use in the Americas, EMEA, and
the following Asia-Pacific countries and jurisdictions: Australia, Hong Kong, Japan, New Zealand, South Korea and Taiwan. Contact Hitachi
Global Storage Technologies for further information. Hitachi Global Storage Technologies shall not be liable to third parties for unauthorized use
of Hitachi Global Storage Technologies trademarks.
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 it operates. Some countries have laws that may affect
encryption-enabled devices. Hitachi GST assumes no responsibility for compliance with laws that apply to our products after they are sold
or outside of our control. Accordingly, we suggest that you review all laws of the countries where you conduct business.
Product specifications provided are sample specifications and do not constitute a warranty. Information is true as of the date of publication
and is subject to change. Actual specifications for unique part numbers may vary. Please visit the Support section of our website, www.
hitachigst.com/support, for additional information on product specifications. Photographs may show design models.
© 2007 Hitachi Global Storage Technologies
Hitachi Global Storage Technologies
3403 Yerba Buena Road
San Jose, CA 95135 USA
Produced in the United States 6/07. Revised 9/07.
All rights reserved.
Partners First™ is a trademark of Hitachi Global Storage Technologies.
Model(s)
HTS542525K9A300
HTS542520K9A300
HTS542516K9A300
HTS542512K9A300
HTS542580K9A300
HTS542525K9SA00
HTS542520K9SA00
HTS542516K9SA00
HTS542512K9SA00
HTS542580K9SA00
Interface
SATA 3 Gb/sec SATA 1.5 Gb/sec
Capacity (GB)
1
250 / 200 / 160 / 120 / 80
Sector size (bytes)
512
Recording zones
24
Data heads (physical)
4 / 4 / 3 / 2 / 2
Data disks
2 / 2 / 2 / 1 / 1
Max. areal density (Gbits/sq. inch)
205
Performance
Data buffer (MB)
2
8
Rotational speed (RPM)
5400
Latency average (ms)
5.5
Media transfer rate (Mbits/sec, max)
665
Interface Transfer Rate (MB/sec, max)
300 150
Seek time (read, typical) (avg. ms)
3
11
Track to track (read, typical) (avg. ms)
1
Full stroke
20
Reliability
Load/unload
600,000
Power
Requirement
+5 VDC (+ -5%)
Startup (W, peak, max.)
5.0
Seek (W, avg.)
2.2
Read / Write (W, avg.)
1.8
Performance idle (W, avg.)
1.7
Active idle (W, avg.)
0.8
Low power idle (W, avg.)
0.55
Standby (W, avg.)
0.2
Sleep (W)
0.1
Physical size
z-height (mm)
9.5 mm
Dimensions (width x depth, mm)
70 x 100
Weight (max, g)
102 // 95
Environmental (Operating)
Shock (half-sine wave)
400G / 2ms, 200G / 1ms
Ambient temperature
5 to 55
o
C
Environmental (Non-operating)
Shock (half-sine wave)
1000G / 1ms
Acoustics (A-weighted sound power)
Idle (typical)
2.4
Seek (typical)
2.6
DSTS542507EN-02
Travelstar 5K250