Hitachi HEJ423030F9AT00, HEN423030F9AT00, HEJ423020F9AT00, HEN423020F9AT00 DATASHEET
Endurastar™ J4K30 and N4K30
2.5-INCH HARD DISK DRIVES
Extreme hard drives for extreme environments
Highlights
>>30GB and 20GB capacity in a 2.5-inch form factor
>>Operating temperature range from -20° C to +85° C
>>Built-in shock sensor enhances data integrity
>>Enhanced moisture control system ensures corrosion control in extreme environments
Applications
>>Automotive
>>GPS navigation systems
>>Applications running in hot and humid climates
Features and Benefits
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Feature / Function |
Benefits |
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Capacity |
30GB maximum capacity |
* 7,500 4-minute MP3 songs, or |
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20GB also available |
* 2.7 hours of DV25 video, or |
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* 15 interactive games |
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Acoustics |
Fluid Dynamic Bearing (FDB) motors |
Quiet operation |
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Reliability |
-20° C to +85° C operating temperature |
Performs well in extreme temperature environments |
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High-endurance FDB motor |
Supports 24x7 applications |
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Load/unload technology |
Reduces disk wear and helps protect user data |
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Built-in shock sensor |
Enhances data integrity |
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*Actual storage may vary depending on the compression rate applied.
Turn up the heat
Hitachi delivers a 50-percent storage capacity increase in its line of “extreme” hard disk drives. The Endurstar™ J4K30 and Endurastar N4K30 are both offered in capacities of up to 30GB, and are designed specifically to perform in extreme temperature environments. With an operating temperature range as wide as -20°C to +85°C, the new Endurastar models are built to perform in the harshest environments—from the desert heat to the Antarctic chill.
Ideal for automotive applications
Endurastar hard drives are the preferred solution for automotive applications or other environments which require high robustness and wider operating temperatures than standard hard drive applications. In fact, the Endurastar J4K30 is already being used in car entertainment and navigation applications—and 30GBs of storage means users can store more than 5,000 audio files, four hours of MPEG2 video and enough navigation data to cover the entire planet!
30 and 20GB |
| 4200 RPM | ATA-5 |
Reliability and performance |
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The new Endurastar models feature glass media and load/unload technology in addition |
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to shock sensor technology which cushions the drive in less than ideal shock or vibration |
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conditions. Endurastar drives incorporate fluid dynamic bearings (FDB) in the spindle motor, |
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allowing the same quiet operations and improved shock characteristics as with PC models, |
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but offers even higher reliability for automotive environments and around-the-clock applica- |
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tions in industrial environments. These features enable the Endurastar drives to achieve a |
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non-operating shock tolerance of 800G/1ms and an operating shock tolerance of 250G/2ms. |
DATA SHEET |
www.hitachiGST.com |
Endurastar™ J4K30 and N4K30
Specifications |
Endurastar J4K30 |
Endurastar N4K30 |
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Model(s) |
HEJ423030F9AT00 |
HEN423030F9AT00 |
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HEJ423020F9AT00 |
HEN423020F9AT00 |
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Interface |
ATA-5 (IDE) |
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Capacity (GB) |
1 |
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30 / 20 |
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Sector size (variable, Bytes/sector) |
512 |
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Recording zones |
16 |
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Data heads (physical) |
2 |
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Data Disks |
1 |
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Max. areal density (Gbits/sq. in.) |
56.5 |
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Performance |
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Data buffer (MB) |
2 |
8 |
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Rotational speed (RPM) |
4172 |
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Latency average (ms) |
7.19 |
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Media transfer rate (Mbits/sec, max) |
361 |
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Interface transfer rate (MB/sec, max) |
100 Ultra DMA mode-5 |
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16.6 PIO mode-4 |
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Seek time (read, typical) (avg. ms) |
13 |
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Maximum (typical, ms) |
24 |
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Minimum (typical, ms) |
3 |
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Reliability |
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Error rate (non-recoverable) |
< 1 per 10 |
13 |
bits transferred |
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Load/unload |
300,000 |
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Availability |
3 |
(hrs/day x days/wk) |
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24x7 |
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Power |
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Requirement |
+5 VDC (+/-5%) |
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Startup (W, peak, max.) |
6.5 |
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Read / Write (W, avg.) |
2.15 |
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Low power idle (W, avg.) |
0.6 |
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Standby (W, avg.) |
0.15 |
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Sleep (W) |
0.1 |
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Physical size |
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z-height (mm) |
9.5 |
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Dimensions (width x depth, mm) |
70 x 100 |
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Weight (g, typ.) |
107 |
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Environmental (operating) |
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Ambient temperature |
-20° to 85° C |
0o to 60o C |
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Relative humidity (non-condensing) |
5% to 90% |
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Shock (half-sine wave) |
250G (2ms) |
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Vibration (sine wave) |
1G (22-500Hz) |
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Ambient temperature |
-40° to 85° C |
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Relative humidity (non-condensing) |
5% to 90% |
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Shock (half-sine wave) |
800G (1ms) |
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Vibration (sine wave) |
5G (22-500Hz) |
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Acoustics (A-weighted sound power) |
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Idle (Bels, typ.) |
2.4 |
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Op (Bels, typ.) |
3.0 |
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Hitachi quality and service
Hitachi Endurastar hard disk drives are designed to the highest quality standards and contain fieldproven components. Hitachi provides worldwide technical support and integration services to enable global customers to bring their products to market quickly.
Hitachi drives are backed by an array of technical support and services, which may include customer and integration assistance. Hitachi is dedicated to providing a breadth of hard disk drive solutions to satisfy all of today’s demanding computing needs.How to read the Travelstar model number
How to read the Travelstar model number
HTJ423030F9AT00 = 30GB/8 MB buffer H = Hitachi
E = Endurastar
J = J4K50 model (N = N4K50) 42 = 4200 RPM
30 = Full capacity — 30GB
30= Capacity this model, 30 = 30GB (20 = 20GB)
F = Generation code 9 = 9.5mm z-height AT = ATA interface
0 = Feature code
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
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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
1One GB is equal to one billion bytes when referring to hard drive capacity. Accessible capacity may be less.
2Portion of buffer capacity used for drive firmware.
3Intended for less than 20 percent duty cycle industrial applications and other non mission critical applications.
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. 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.
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 12/04. Revised 11/08. All rights reserved.
Endurastar™ and Partners First™ are trademarks of Hitachi Global Storage Technologies.
DSEJ423007EN-03
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