************************************************************
                         Miniscribe Disk Drive Specifications
                                        For
                                    Model: 3650
             ************************************************************

             FORM FACTOR                           5.25 inch HH
             INTERFACE                              ST412/ST506
             DATA ENCODING METHOD                           MFM
             DATA TRANSFER RATE (Mbit/Sec)                  5.0

             DISK DRIVE CHARACTERISTICS
                HEADS                                         6
                CYLINDERS                                   809
                SECTORS/TRACK (512 Byte Sectors)             17
                WRITE PRECOMPENSATION CYLINDER              128
                REDUCED WRITE CURRENT CYLINDER              809
                MINIMUM STEP PULSE RATE (micro-Seconds)       6
                UNFORMATTED BYTES/TRACK                  10,416
                RADIAL TRACK DENSITY (TPI)                  763
                ROTATIONAL SPEED (RPM)                    3,600
                UNFORMATTED CAPACITY (Millions of Bytes)   50.6
                FORMATTED CAPACITY (Millions of Bytes)     42.2
                FORMATTED CAP. (MB = 1,048,576 Bytes)      40.3

             ACCESS TIMES (mSec)*
                SINGLE TRACK                                 15
                ONE-THIRD STROKE**                           61
                MAXIMUM                                     132
             *(BASED ON A 2 MICRO-SECOND STEP RATE)
             *(INCLUDES SETTLING)
             **(APPROXIMATION OF AVERAGE)

             POWER REQUIREMENTS
                DISSIPATION (Watts)
                   TYPICAL                                 18.1
                   MAXIMUM                                 21.5
                CURRENT (Amps)
                   +5 V DC (+ or - 5%)                      0.5
                   +12 V DC (+ or - 5%)                     1.3
                   MAXIMUM STARTUP CURRENT                  3.5

             PHYSICAL DIMENSIONS
                HEIGHT (in)                               1.625
                WIDTH (in)                                 5.75
                DEPTH (in)                                    8
                WEIGHT (lbs)                                3.1

             OPERATIVE ENVIRONMENTAL LIMITS
                MINIMUM TEMPERATURE (Centigrade)              4
                MAXIMUM TEMPERATURE (Centigrade)             50
                THERMAL GRADIENT (Degrees C/Hour)            10

             RELIABILITY
                MTBF (Hours)                             25,000
                MTTR (Minutes)                               30
                COMPONENT DESIGN LIFE (Years)                 5