Hitachi H3133 DATASHEET

H3xxx.txt

3 1/2-INCH 133, 171, 256 and 342 MB DISK DRIVES
MODELS H3133, H3171, H3256 and H3342
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AN OEM OFFERING FROM IBM

This 3 1/2-inch disk drive family is the latest in a series of IBM storage
solutions for desktop personal computers. Maximum flexibility is
provided by a range of formatted capacities from 133 to 342 MB in an
industry-standard package. The average seek time of 14 ms provides
excellent performance for desktops or other interactive applications.

Reliability has been improved over previous models, giving a projected
250,000 power-on hours MTBF.

QUALITY AND AVAILABILITY

These IBM drives are manufactured to stringent standards for quality and
performance, with sensitive components assembled in a rigidly controlled
clean environment.

Extensive quality control and testing procedures are used throughout the
manufacturing process to assure product reliability and data integrity.

Worldwide IBM manufacturing facilities provide multi-site, high-volume
production capability.

HIGHLIGHTS

- 133, 171, 256 and 342 MB capacity

- AT* (IDE) and SCSI-2 interfaces

- ECC on the fly

- Zone Bit Recording

- 250,000 power-on hours MTBF

- Mounts in all six directions

- Dedicated head landing zone

- Automatic actuator lock

- 96 KB segmented data buffer for read look-ahead and write

- 8.3 MB/sec interface data transfer rate

PRODUCT DESCRIPTION
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3 1/2" 133, 171, 256 Models H3133, H3171, H3256, H3342
and 342 MB Disk Drives
AT version only
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Configuration
Interface AT (IDE)
Device Capacity
Formatted 133/171/256/342 MB (1)
Sector Size 512 Bytes
Recording Zones 2
User Cylinders 2420
Data Heads 2/2/3/4
Disks 1/1/2/2
Recording Density
Maximum 55000 BPI
Track Density 2800 TPI
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Performance

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H3xxx.txt

Rotational Speed 3600 RPM
Media Transfer Rate 18.0 (Inner), 26.5 (Outer) Mbits/sec
Interface Transfer Rate
Maximum (AT only) 8.3 MB/sec
Data Buffer
Read Look-Ahead and Write 96 KB (Three segments, 32 KB each)
Latency
Average 8.33 msec
Seek Time (Typical)
Average (Read) 14 msec
Track to Track 4.5 msec
Full Track 28 msec
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Reliability
MTBF
Projected power-on hours 250,000
Error Rates
Non-Recoverable Errors < or - per 1.0E 13 Bits Transfer
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Power
Requirements + 5 VDC + or - 5%, +12 VDC + 10% -8%
Dissipation (typical)
Start Up (Maximum Peak) 12.6 Watts
Seek 4.2 Watts
Idle 2.5 Watts
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Physical Size
Height 25.4 mm
Width 101.6 mm
Depth 146 mm
Weight
Maximum 510 g
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Operating Non-Operating
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Environmental Characteristics
Ambient Temperature 5 to 55 degrees C -40 to 65 degrees C
Relative Humidity
Non-Condensing 8% to 90% 5% to 95%
Maximum Wet Bulb
Non-Condensing 29.4 degrees C 35 degrees C
Shock
Half-sine-wave 15 G/5 msec 75 G/11 msec
Vibration
Random (RMS) 0.67 G (5-500 Hz) 1.04 G (2-200 Hz)
_______________________________________________________________________________

(1) 1 MB=1,000,000 Bytes

Product Description data represents IBM's design objectives and is
provided for comparative purposes; actual results may vary depending
on a variety of factors. This product data does not constitute a
warranty. Questions regarding IBM's warranty terms or methodology
used to derive this data should be referred to your IBM representative.
Data subject to change without notice.

Copywrite International Business Machines Corporation 1994

* IBM and AT are trademarks of International Business Machines
Corporation

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