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Panasonic
5.25inch Minifloppy Disk Drive
MAR I 7 1988
JU-455
JU-465
JU-475
SPECIFICATION SUMMARY
Performance Specifi cations
Item
JU-455
JU-465
JU-475
(Low) (High)
Capacity
Total Storage
Capacity /Disk
Unformated
(bytes)
FM
MFM
250.000
500.000
500,000
1,000,000
500,000 8,333,333 802,083
1,000,000 1,666,666 1,604,167
Formated
(bytes)
FM
MFM
163,840
327,680
327,680
655,360
327,680 614,400' 591,360
655,360 1,228,800 1,182,720
Storage Capacity/
Surface
Unformated
(bytes)
FM
MFM
125,000
250,000
250.000
500.000
250.000 416,666 401,041
500.000 8,333,333 802,083
Formated
(bytes)
FM
MFM
—
1 63,840 307,200 295,680
327,680 614,400 591,360
Storage Capacity/
Track
Unformated
(bytes)
FM
MFM
3,125
6,250
3,125
6,250
3,125 5,208
6,250 10,416
Formated
(bytes)
FM
MFM
2,048
4,096
2,048
4,096
2,048 3,840
4,096 7,680
Storage Capacity/
Sector
Formated
(bytes)
FM
MFM
1 28/256
256/512
128/256
256/512
128 256
256 512
Recording
Density
Number of Heads
2
2
2 2
Number of Tracks
80
160
160 160/154
Recording Density(bpi)
FM
2,938
2,961
2,961 4,935/4,821
MFM
5,876
5,922
5,922 9,870/9,642
Track Density(tpi)
48
96
96 96
Data Transfer Rate(K bits/s)
FM
125
125
125/150 250
MFM
250
250
250/300 500
Access
Rotational Speed(R.P.M )
300
300
300 360
Track to Track Seek(ms)
4
3
3 3
Settling Time(ms)
15
15
15 15
Motor Start Time(ms)
500
500
500 500
Power Specifications
Item
Rating
Power
Requirment
12 VDC
Voltage
12 V ± 10% MaxRipple lOOmVp-p
Current
Max.
0.6A/Peak 0.9A
Typical
0.36A
5 VDC
Voltage
5V ± 5% MaxRipple 50mVp-p
Current
Max.
0.65A
Typical
0.5A
Environment
Temperature
Operating
10 to 46. 1°C
Storage
-22.2 to 47.2°C
Shipping
62.2°C
Temperature Gradient
20°/H
Humidity
Operating
20 to 80% RH No Condensation
Non Operating
1 to 95% RH No Condensation
Maximum Wet Bulb
29.4°C
Vibration
Operating
Acceleration
0.5 G (No Soft Error)
Frequency
5 to 55 Hz (Except Resonant Point)
Non Operating
Acceleration
3.0G
Frequency
5 to 55Hz (Except Resonant Point)
Shock
Operating
Acceleration
0.5G (No Hard Error)
Interval
10ms (Square Wave)
Non Operating
Acceleration
40G
Interval
1 Oms (Square Wave)
Mechanical Dimension
Width
146.1mm (Except Front Bezel)
Height
41 ,5mm
Depth
203.2mm
Weight
13kg
Mounting Angle
Vertical
0° to 20°
Horizontal
0° to 20°
Dielectrical Withstanding Voltage
Between the Mounting
Bracket and Signal Ground
250 VDC (1 minute)
Insulation Resistance
Between the Mounting
Bracket and Signal Ground
250 VDC, >50 MO
Reliability Specifications
Item
Rating
Drive
Mtbf
10,000 POH
Mttr
0.5 hours
Drive Life
5 years or POH
Error rate
Software Errors
10 9 /bit
Hardware Errors
1 0- i2 /bit
Seek Errors
1 0 -6 /seek
■ ELECTRICAL INTERFACE
Interface Connections
System
Frame Ground
* 1 Ju— 475
*2 Ju— 475
Frame Ground
Mode Select
Ready Drive Status
Interface Signal Driver /Receiver
Q -F 5V
MAX 10 FEET
RIBBON OR
TWISTED PAIR
1500
7414
DC POWER PROFILE
TYPICAL
CURRENT
REQUIRMENTS
(AMPS)
TYPICAL
CURRENT
REQUIRMENTS
(AMPS)
SPINDLE RATE
RUNNING
JU— 465 475 13
4 6 4 5 5 6 2 9w
■ PHYSICAL INTERFACE
DRIVE PCB
J2
AMPP/N 172294-1
PI CONNECTOR
SCOTCH FLEX
P/N 3463-0001 OR
AMPP/N 583717-5
P2 CONNECTOR
AMPP/N 1-480424-0
FRAME CONNECTOR
AMP P/N 60972-1
FRAME GROUND
AMP P/N 61761-2
MECHANICAL DIMENSIONS
(Front Plate Dimension)
1.63 (41.5)
.39 ±02
(10 + .5)
(FI
1.77(45)
In
In
rs.'
m
d
0.51 (
13)
0 .
39(10)
in
00
VO
m
qrr—
c~" H
r~,_ ^
In
cn
L_j
1.85(47)
1.09 (27.8)
ll (38)
5.87 ±0,02 (149 ±0.5)
(Front plate dimension)
£
(Installation dimension)
Dimension to the PCB
Pattern surface
(1 39.7 ± 0.5)
NOTE: x.xxix.xx = in.
(x.xxix.xx) s mm
MECHANICAL DIMENSIONS
For further details of each Model, please
refer to the specification sheet.
Panasonic
Specifications are subject to change without notice
MSD 870710500 Pninted in Japan
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