360K Floppy Drive  (250-4051/A/B)   Specifications      Faxback Doc. # 5263
   
NOTE: The below specifications and information are for the 250-4051 and
250-4051A only.  For the 250-4051B, refer to the following section.


     MANUFACTURER: Mitsubishi                     CAPACITY
            MODEL: M4851-347                     FORMATTED
            HEADS: 2                            MFM METHOD: Disk - 327.7KB
        CYLINDERS: 40                                       Track - 4096B
      PART NUMBER: AXX-5105/SUB-AXX-5057                    Sector - 163.8B
       DIMENSIONS: 1.62 x 5.75 x 7.7"               TRACKS: 80
                   41mm x 146mm x 195mm  FLOPPY DISK CONTR: N/A
POWER CONSUMPTION                            TRANSFER RATE: 250 kbits/sec
        OPERATING: N/A                     AVERAGE LATENCY: 100 msec
          WAITING: N/A                         ACCESS TIME
   ROTATING SPEED: 300 RPM                  TRACK TO TRACK: 6 ms
  ENCODING METHOD: MFM                             AVERAGE: 103 ms
  SUPPLY VOLTAGES                            SETTLING TIME: 25 ms
    (+12V +/- 5%)                         MOTOR START TIME: 250 ms
          CURRENT: Standby - N/A                 INTERFACE: N/A
                   Average - 0.5A                     MTBF: 10,000 POH
                   Motor Start - 0.7A
     (+5V +/- 5%)
          CURRENT: Standby - N/A
                   Average - 0.5A
                   Motor Start - 1.0A


NOTE: The below specifications and information are for the 250-4051B only.
For the 250-4051 and the 250-4051B, refer to the preceding section.


     MANUFACTURER: Mitsubishi                     CAPACITY
            MODEL: MF501A(B)-347UA               FORMATTED
            HEADS: 2                            MFM METHOD: Disk - 327.7KB
        CYLINDERS: 40                                       Track - 4096B
      PART NUMBER: AXX-5057/SUB-AXX-5105                    Sector - 163.8B
       DIMENSIONS: 1.63 x 5.75 x 7.7"               TRACKS: 80
                   41mm x 146mm x 195mm  FLOPPY DISK CONTR: N/A
POWER CONSUMPTION                            TRANSFER RATE: 250 Kbits/sec
        OPERATING: N/A                     AVERAGE LATENCY: 100 msec
          WAITING: N/A                         ACCESS TIME
   ROTATING SPEED: 300 RPM                  TRACK TO TRACK: 6 msec
  ENCODING METHOD: MFM                             AVERAGE: 103 msec
  SUPPLY VOLTAGES                            SETTLING TIME: 25 msec
    (+12V +/- 5%)                         MOTOR START TIME: 250 msec
          CURRENT: Standby - N/A                 INTERFACE: N/A
                   Average - 0.3 A                    MTBF: 10,000 POH
                   Motor Start - 1.0A
     (+5V +/- 5%)
          CURRENT: Standby - N/A
                   Average - 0.4 A
                   Motor Start - 0.7 A


(dtc/BKL-01/24/96)