FD1231H - 1.44 MB, 3.5 Inch 1.44 MB formatted storage, Read/write compatible with 720 KB drives, Consumes only .015 watts in standby mode 30,000 Hr MTBF.

Capacity :	Formatted: 720 KB mode = 720 KB 1.44 MB mode = 1.44 MB Unformatted: 720 KB Mode = 1 MB 1.44 MB Mode = 2 MB
Dimensions
Height:	1.0 in/25.4 mm
Width:	4.0 in/101.6 mm
Depth:	5.75 in/146 mm
Weight:	1.1 lb/470 G
Disk Configuration
Disk Size:	3.5"
Track Density:	135 tpi
Bit Density:	720 KB Mode = 8,717 bpi 1.44 MB Mode = 17,434 bpi
Environmental
Temperature:	Operating = 4° to 46° C Non-operating = -20
Humidity:	Operating = 20% to 80% Non-operating = 10% to 90%
Performance Specifications
Seek Times:	Track to track = 3 ms
Settle Time:	15 ms
Interface:	34 pin
Power
Voltage Req'd:	+5V
Pwr Dissipation:	Read/write mode = 1.25 watts Stand by mode = .015
Reliability
MTBF:	30,000 POH
MTTR:	<30 Minutes
Device Life:	15,000 POH or 5 years
Specifications
Rotational Rate:	300 RPM
Data Transfer:	720 KB Mode = 250 KB/s 1.44 MB Mode = 500 KB/s