Hitachi Travelstar 7K750 0J18721 / HTE727550A9E364 500GB 7.2K 2.5" SATA EA Hard Drive

Hitachi Part #/MPN: 0J18721

DiscTech Item #: HIT-0J18721-BN-3Y

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Capacity: 500GB

Speed: 7,200RPM

Interface Types: SATA

Form Factor: 2.5inx9mm Fits Most laptops

Sector Size: 512 / 512e

Electrical Interface: SATA 300 - 3.0Gbps

On-Board Cache: 16MB

Hitachi Travelstar 7K750 0J18721 / HTE727550A9E364  500GB 7.2K 2.5" SATA EA Hard Drive - Brand New

High-capacity storage paves the way for new mobile platforms
Travelstar™ 7K750 is a 7200 RPM, 375GB/platter, 2.5-inch hard drive with capacities of 500GB, 640GB and 750GB. This standard 9.5mm, two-disk design, intended for use in notebook PCs, external storage and other mobile applications, uses the industry’s new Advanced Format. Advanced Format increases the physical sector size on hard drives from 512 bytes to 4096 (4K) bytes, which increases drive capacities and improves error correction capabilities. The Travelstar 7K750 allows manufacturers to deliver high-capacity, power-efficient systems. Manufacturers can consult the Hitachi Advanced Format Technology Brief for more information on using these hard drives. The 7K750 continues Hitachi’s tradition of ecological leadership and carries its EcoTrac classification. Travelstar 7K750 delivers speed and capacity, without sacrificing battery life or audio quality, to meet the multi-tasking demands of commercial and consumer users on the go.
Encryption option
Travelstar 7K750 is the fifth generation self-encrypting drive (SED) to feature Hitachi’s Bulk Data Encryption. The SED encrypts data using protected keys in real time, providing users the highest level of data protection available. It also speeds and simplifies drive re-purposing. By deleting the encryption key, the data on the drive is rendered unreadable, thereby eliminating the need for time-consuming data-overwrite. For information about the SED models designed to meet the Trusted Computing Group (TCG) Opal Storage Security specification, please contact your Hitachi representative.
Enhanced Availability (EA)—for 24x7 access to data
Hitachi provides enhanced availability models that allow the Travelstar 7K750 to deliver 24x7 access to data for data-intensive applications requiring round-the-clock operation. The 7K750 provides high capacity, durability and low power utilization on a proven platform for quality and reliability. EA models support the stringent demands of “always-on” applications in lower-transaction environments.


This drive is compatible with any laptop/computer that uses 2.5" SATA hard drives.

Series Overview HTE727550A9E364
InterfaceSATA 3Gb/s
Capacity (GB)


Sector size (bytes)


Recording zones


Areal density (Gbit/ max)


Data buffer (MB) 16
Rotational speed (RPM) 7200
Latency average (ms) 4.2
Media transfer rate (Mbits/sec, max) 1276
Interface transfer Rate (MB/sec, max) 300
Seek time Average (typical) ms (read) 12
Seek time Track to track (typical) ms (read) 1
Seek time Full stroke (typical) ms (read) 20
Load / unload cycle 600,000
Power on hours (POH) per month N/A
Requirement+5 VDC (+ -5%)
Dissipation Startup (W, peak, max.) 5.5
Seek (W, avg.) 2.0
Read / Write (W, avg.) 1.8
Idle (avg.) 1.7
Active idel (W, avg.)


Low power idle (W, avg.) N/A
Standby (W, avg.) 0.2
Sleep (W) 0.1
Physical size
z-height (mm) 9.5
Dimensions (width x depth, mm) 70 x 100
Weight (g, max) 115
Environmental (Operating)
Shock (half-sine wave) 400G/2ms, 225G/1ms
Ambient temperature 0 to 60o C
Environmental (Non-Operating)
Shock (half-sine wave) 1000G/1ms
Ambient temperature -40 to 65o C
Acoustics (A-weighted sound power)
Idle (Bels, typical)2.5
Seek (Bels, typical) 2.7

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ROHS Compliant

Alternate MPNs: HTE727550A9E364

Weight: 0.5 lb

Warranty: 3 Year Manufacturer

Brand New

Condition Levels Explained

The product is brand new.

3 Year Manufacturer Warranty

Product Warranties Explained

The product has a manufacturer warranty for the time period specified.