Hitachi HEJ425050F9AT00, HEN425050F9AT00, HEJ425040F9AT00, HEN425040F9AT00, HEJ425030F9AT00 DATASHEET

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

	Feature / Function	Benefits
Capacity	50GB maximum capacity	* 12,500 4-minute MP3 songs, or
	40GB and 30GB also available	* 17 movies
		* 50 interactive games
Acoustics	Fluid Dynamic Bearing (FDB) motors	Quiet operation
Reliability	-30° C to +85° C operating temperature	Performs well in extreme temperature environments
	-300m to +5,000m altitude on J4K50
	High-endurance FDB motor	Supports 24x7 applications
	Shock sensor technology	Cushions the drive in poor shock or vibration conditions
	Thermal Fly-height Control (TFC)	Improved soft error rate and performance

*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

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