Hitachi HEJ425050F9AT00, HEN425050F9AT00, HEJ425040F9AT00, HEN425040F9AT00, HEJ425030F9AT00 DATASHEET
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Endurastar™ J4K50 and N4K50
2.5-INCH HARD DISK DRIVES
Industrial strength drives built for extreme environments
Highlights
>>Highest capacity Automotive HDD at 50GB; 67% more than prior model
>>Expanded operating temperature range from -30° C to +85° C
>>Highest operating altitude range of up to 5000 meters
>>4th generation product, based on proven technology
Applications
>>Automotive
>>GPS navigation systems
>>Applications running in hot and humid climates
>>Industrial applications
Features and Benefits
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Feature / Function |
Benefits |
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Capacity |
50GB maximum capacity |
* 12,500 4-minute MP3 songs, or |
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40GB and 30GB also available |
* 17 movies |
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* 50 interactive games |
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Acoustics |
Fluid Dynamic Bearing (FDB) motors |
Quiet operation |
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Reliability |
-30° C to +85° C operating temperature |
Performs well in extreme temperature environments |
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-300m to +5,000m altitude on J4K50 |
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High-endurance FDB motor |
Supports 24x7 applications |
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Shock sensor technology |
Cushions the drive in poor shock or vibration conditions |
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Thermal Fly-height Control (TFC) |
Improved soft error rate and performance |
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*Actual storage may vary depending on the compression rate applied.
Built like a tank
Hitachi is first to deliver a 50GB per platter Endurastar hard drive for use in extreme environments. The Endurastar J4K50 and N4K50 are offered in capacities of 30 to 50GB. Along with the increased capacity, comes a wider temperature range and improved altitude range. Endurastar J4K50 is designed to operate in the most severe conditions, at temperatures of -30°C to +85°C and altitudes of -300 to +5000 meters.Endurastar N4K50 offers a temperature range of -16°C to +70°C at altitudes of -300 to 3000 meters. The new Endurastar models continue to leverage shock sensor technology for enhanced reliability and the proven technology
of Hitachi HDDs for notebook PCs to deliver quiet acoustics and excellent performance. Hitachi Endurastar drives are designed to guard and deliver your data under the harshest environmental conditions.
50, 40 and 30GB | 4200 RPM | ATA-6
Made for the road
Hitachi Endurastar hard drives deliver the one-two punch of operating at the highest altitude and the most extreme temperatures. These drives are designed to meet the rigors of the automotive environment, including traditional navigation, telematics, in-car entertainment and vehicle relational management. This time-proven design supports around-the-clock applications in industrial environments.
The implementation of TFC, which enables direct control of the read/write element using heat, provides more consistent spacing between the read/write element and the media, thereby improving robustness and performance. These new Endurastar models are preferred for applications in the most radical environments ranging from desert heat to Antartic chill.
DATA SHEET |
www.hitachiGST.com |
Endurastar™ J4K50 and N4K50
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Specifications |
Endurastar J4K50 |
Endurastar N4K50 |
Hitachi quality and service |
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Model(s) |
HEJ425050F9AT00 |
HEN425050F9AT00 |
Hitachi Endurastar hard disk drives are designed |
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HEJ425040F9AT00 |
HEN425040F9AT00 |
to the highest quality standards and contain field- |
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HEJ425030F9AT00 |
HEN425030F9AT00 |
proven components. Hitachi provides worldwide |
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Interface |
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ATA-6 |
f |
technical support and integration services to |
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Capacity (GB) |
1 |
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50 / 40 / 30 |
f |
enable global customers to bring their products |
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Sector size (variable, Bytes/sector) |
512 |
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to market quickly. |
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Recording zones |
24 |
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Hitachi drives are backed by an array of technical |
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Data heads (physical) |
2 |
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support and services, which may include |
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Data Disks |
1 |
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customer and integration assistance. Hitachi is |
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Max. areal density (Gbits/sq. in.) |
86.1 |
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dedicated to providing a breadth of hard disk |
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Performance |
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drive solutions to satisfy all of today’s demanding |
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Data buffer (MB) |
2 |
8 |
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computing needs. |
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Rotational speed (RPM) |
4260 |
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How to read the Travelstar model number |
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Latency average (ms) |
7.04 |
f |
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HTJ425050F9AT00 = 50 GB/8 MB buffer |
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Media transfer rate (Mbits/sec, max) |
388 |
f |
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H = Hitachi |
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Interface transfer rate (MB/sec, max) |
100 Ultra DMA mode-5 |
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E |
= Endurastar |
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16.6 PIO mode-4 |
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J = J4K50 model (N = N4K50) |
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Seek time (read, typical) (avg. ms) |
13 |
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42 = 4200 RPM |
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Maximum (typical, ms) |
24 |
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50 = Full capacity — 50 GB |
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Minimum (typical, ms) |
3 |
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Reliability |
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50 = Capacity this model, 50 = 50 GB |
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(40 = 40 GB, 30 = 30 GB) |
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Error rate (non-recoverable) |
< 1 per 10 |
13 |
bits transferred |
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F |
= Generation code |
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Load/unload |
600,000 |
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9 |
= 9.5mm z-height |
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Availability |
3 |
(hrs/day x days/wk) |
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24x7 |
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AT = ATA interface |
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Power |
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0 |
= Feature code |
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Requirement |
+5 VDC (+/-5%) |
f |
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0 |
= Reserved |
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Startup (W, peak, max.) |
6.5 |
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Information and Technical Support |
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Read / Write (W, avg.) |
2.15 |
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www.hitachigst.com (Main Web site) |
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Low power idle (W, avg.) |
0.8 |
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www.hitachigst.com/partners (Partner Web site) |
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Standby (W, avg.) |
0.15 |
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North America |
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Sleep (W) |
0.1 |
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Physical size |
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support_usa@hitachigst.com |
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Toll free: 1 888 426-5214, Direct: 1 507 322-2370 |
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z-height (mm) |
9.5 |
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Asia Pacific |
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Dimensions (width x depth, mm) |
70 x 100 |
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support_ap@hitachigst.com / 65 6840 9595 |
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Weight (g, typ.) |
95 |
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Environmental (operating) |
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EMEA and UK |
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Ambient temperature |
-30° to 85° C |
-16o to 70o C |
support_uk@hitachigst.com / 44 20 7133 0032 |
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Altitude (m) |
-300 to 5,000 |
-300 to 3,000 |
Germany |
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Shock (half-sine wave) |
250G (2ms) |
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support_uk@hitachigst.com / 49 6929 993601 |
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Vibration (sine wave) |
Up to 3G (10-500Hz) |
f |
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Program Support |
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Environmental (non-operating) |
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Partners First™ Program |
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Ambient temperature |
-40° to 95° C |
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channelpartners@hitachigst.com |
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Altitude (m) |
-300 to 15,000 |
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Shock (half-sine wave) |
800G (1ms) |
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Vibration (sine wave) |
Up to 5G (10-500Hz) |
f |
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Acoustics (A-weighted sound power) |
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1 |
One GB is equal to one billion bytes when referring to hard drive |
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capacity. Accessible capacity may be less. |
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Idle (Bels, typ.) |
2.4 |
f |
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2 |
Portion of buffer capacity used for drive firmware. |
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3 |
Intended for less than 20 percent duty cycle industrial applications |
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Op (Bels, typ.) |
3.0 |
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and other non mission critical applications. |
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Hitachi Global Storage Technologies’ trademarks are authorized for use in countries and jurisdictions in which Hitachi Global Storage |
© 2007 Hitachi Global Storage Technologies |
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Technologies has the right to use, market and advertise the brands. Contact Hitachi Global Storage Technologies for further information. |
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Hitachi Global Storage Technologies shall not be liable to third parties for unauthorized use of Hitachi Global Storage Technologies |
Hitachi Global Storage Technologies |
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3403 Yerba Buena Road |
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trademarks.. |
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San Jose, CA 95135 USA |
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References in this publication to Hitachi Global Storage Technologies’ products, programs, or services do not imply that Hitachi Global |
Produced in the United States 8/06. Revised 11/08. |
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Storage Technologies intends to make these available in all countries in which it operates. |
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All rights reserved. |
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Product specifications provided are sample specifications and do not constitute a warranty. Information is true as of the date of |
Endurastar™ and Partners First™ are trademarks of |
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publication and is subject to change. Actual specifications for unique part numbers may vary. Please visit the Support section of our |
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Hitachi Global Storage Technologies. |
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website, www.hitachigst.com/support, for additional information on product specifications. Photographs may show design models. |
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DSEJ425007EN-03
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