Large capacity, robust features for extreme environments
Hitachi delivers an industry-leading 100GB capacity in its latest Endurastar line of 2.5-inch
hard drives designed especially for extreme environments. The Endurstar J4K100 and
N4K100 models provide twice the capacity of their predecessors and are built to operate
at altitudes of up to 5500 meters. The Endurastar J4K100 is designed for the most severe
conditions, with an operating temperature range of -30ºC to +85ºC. For milder conditions, the
Endurastar N4K100 provides an operating temperature range of -20ºC to +75ºC. The drives
are offered in SATA and PATA interface options for design configuration flexibility.
Right choice for the road
Endurastar hard drives are built to meet the rigors of the automotive environment, including
navigation, telematics, in-car entertainment and vehicle relational management. The drives
have been designed using a proven 5th generation platform.
Rugged, durable design
These new Endurastar drives leverage time-proven technologies pioneered on Hitachi hard
drives for notebook PCs to deliver quiet acoustics and robust performance. FDB motors
provide quiet operation, and Thermal Fly-height Control (TFC) enhances reliability by
maintaining more consistent spacing between the read/write head and the disk. Already in
use across its other product lines, perpendicular magnetic recording (PMR) technology has
been implemented on Endurastar J4K100 and N4K100 to deliver excellent soft error rates for
improved reliability and performance under even the harshest environmental conditions.
All models come standard with proven shock sensor technology and enhanced humidity
absorption for superior reliability.
100, 80 and 40GB | 4200 RPM
ATA-6 and SATA 1.5Gb/s
Highlights
Industry-leading 100GB capacity optimized >
for automotive applications
High operating altitude range of up to >
5500 meters
Wide operating temperature range from >
-30ºC to +85ºC
5th generation product, based on proven >
technology
PATA and SATA interfaces >
Applications
Automotive >
GPS navigation systems >
Surveillance applications >
Industrial applications >
High-capacity hard drives for extreme environments
Feature / Function Benefits
Capacity 100GB maximum capacity * 25,000 4-minute MP3 songs
* 35 movies
* 50 interactive games (2GB per game)
Acoustics Fluid Dynamic Bearing (FDB) motors Quiet operation
Reliability -30° C to +85° C operating temperature Performs well in extreme temperature environments
High-endurance FDB motor Supports 24x7 applications
Shock sensor technology Cushions the drive in poor shock or vibration conditions
Perpendicular Magnetic Recording Improved soft error rate and performance
(PMR) technology with Thermal Wide operating range for temperature and altitude
Fly-height Control (TFC)
Interface PATA and SATA Configuration flexibility
Features and Benefits
Endurastar™ J4K100 and N4K100
2.5-INCH HARD DISK DRIVES
www.hitachiGST.com
*Actual storage may vary depending on the compression rate applied.
Model(s) HEJ421010G9SA00
HEJ421080G9SA00
HEJ421010G9AT00
HEJ421080G9AT00
HEJ421040G9AT00
HEN421010G9AT00
HEN421080G9AT00
HEN421040G9AT00
Interface SATA 1.5Gb/s ATA-6
Capacity (GB)1 100 / 80 100 / 80 / 40
Sector size (variable, Bytes/sector) 512
Recording zones 24
Data heads (physical) 2
Data disks 1
Max. areal density (Gbits/sq. in.) 172 171
Performance
Data buffer (MB)2 8
Rotational speed (RPM) 4260
Latency average (ms) 7.04
Media transfer rate (Mbits/sec, max) 559 554
Interface transfer rate (MB/sec, max) 150 100 Ultra DMA mode-516.6 PIO mode-4
Seek time (read, typical) (avg. ms) 13
Reliability
Error rate (non-recoverable) < 1 per 1013 bits transferred
Load/unload 600,000
Availability3 (hrs/day x days/wk) 24x7
Power
Requirement +5 VDC (+/-5%)
Startup (W, peak, max.)4 6.5
Read/Write (W, avg.) 2.15
Low power idle (W, avg.) 0.8
Standby (W, avg.) 0.15
Sleep (W) 0.1
Physical size
z-height (mm) 9.5
Dimensions (width x depth, mm) 70 x 100
Weight (g, max.) 97
Environmental (operating)
Ambient temperature -30o to 85o C -20o to 75o C
Altitude (m) -300 to 5,500 -300 to 3,000
Shock (half-sine wave) 250 G (2ms)
Vibration (sine wave) Up to 3 G (10-500Hz)
Environmental (non-operating)
Ambient temperature -40o to 95o C
Altitude (m) -300 to 15,000
Shock (half-sine wave) 800 G (1ms)
Vibration (sine wave) Up to 5 G (10-500Hz)
Acoustics (A-weighted sound power)
Idle (Bels, typ.) 2.4
Op (Bels, typ.) 3.0
1 One GB is equal to one billion bytes when referring to hard drive
capacity. Accessible capacity may be less.
2 Portion of buffer capacity used for drive firmware
3 Intended for less than 20% duty cycle industrial applications and other
non-mission critical applications at operational temperature 5ºC to 55ºC.
4 Power requirements shown apply to average operating temperatures.
For power requirements at low temperatures, see OEM specification at
www.hitachigst.com/support.
Specifications
How to read the Endurastar model number
HEJ421010G9SA00 = 100GB
H = Hitachi
E = Endurastar
J = J4K100 model (N = N4K100)
42 = 4200 RPM
10 = Full capacity — 100GB
10 = Capacity this model, 10 = 100GB
(80 = 80GB, 40 = 40GB)
G = Generation code
9 = 9.5mm z-height
SA = Serial interface (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
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 Endurastar 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 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.
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.
© 2009 Hitachi Global Storage Technologies
Hitachi Global Storage Technologies
3403 Yerba Buena Road
San Jose, CA 95135 USA
Produced in the United States 4/09. All rights reserved.
Endurastar and Partners First™ are trademarks of Hitachi Global
Storage Technologies.
DSEJ4210009EN-01
Endurastar™ J4K100 and N4K100
Endurastar J4K100 Endurastar N4K100