• Specifications

  • Apollo Series

  • A-Plus Series

  • T-Bird Series

  • Product History

    A-PLUS Series,
    3.5-inch Form-Factor
    Low-Profile

  • A-PLUS Series
    PLS-30854A
    A-PLUS 4    		 PLS-31084A
    A-PLUS 4S     		PLS-31274A
    A-PLUS 4
    Capacity, Formatted Mbytes (512 bytes/sector) 850.0 1,080.7 1,272.7
    Physical Organization
    Disks 2 2 3
    Data Surfaces 4 4 6
    Read/Write Heads 4 4 6
    Cylinders 3858 3952 3844
    Sectors per Track 72~132 92~163 72~132
    Logical Organization
    Sectors per Track (max) 63 63 63
    Read/Write Heads (max) 16 16 16
    Cylinders (max) 1,647 2,094 2,466
    Functional Specifications
    Actuator Type Rotary VoiceCoil Rotary Voice Coil Rotary Voice Coil
    Interface AT (IDE Type) AT (IDE Type) AT (IDE Type)
    Servo Embedded Sector Servo Embedded Sector Servo Embedded Sector Servo
    Recording Method 1.7 RLL 8,9 GCR 1.7 RLL
    Recording Density (bpi,max.) 73,906 91,065 74,504
    Flux Density (fcpi,max.) 55,430 102,448 55,878
    Track Density (tpi) 4,300 4,405 4,300
    Performance Specifications
    Seek Time (typical)
  • Track to Track (ms)
  • Average (ms)
  • Full Stroke (ms)
  • Average Latency (ms)

    • 3
    11
    20
    6.7
    3
    11
    20
    6.7
    3
    11
    20
    6.7
    Spindle Speed 4,500 4,500 4,500
    Data Transfer Rate
  • To/From Media (Mbits/s)
  • To/From Buffer (MBytes/s)

    • 54.4
    11
    70.42
    11
    54.4
    11
    Command Overhead (ms) 0.5 0.5 0.5
    Start Time
  • Typical (sec)
  • Maxmum (sec)

    • 8
    15
    8
    15
    10
    15
    Stop Time
  • Typical (sec)
  • Maxmum (sec)

    • 7
    15
    7
    15
    7
    15
    Interleave 1:1 1:1 1:1
    Buffer Size (KBytes) 256 256 256
    Reliability Specifications
    Recoverable Read Errors per Bits Read 1/10e10 1/10e10 1/10e10
    Correctable Read Errors per Bits Read 1/10e12 1/10e12 1/10e12
    Nonrecoverable Read Errors per Bits Read 1/10e14 1/10e14 1/10e14
    MTBF (power on hours) 300,000 300,000 300,000
    MTTR (typical minutes) 5 5 5
    Start/Stop Cycles 50,000 50,000 50,000
    Component Design Life (years) 5 5 5
    Environmental Specifications
    Temperature
  • Operating ('C)
  • Non-operating ('C)

    • 5 ~ 55
    -40 ~ 65
    5 ~ 55
    -40 ~ 65
    5 ~ 55
    -40 ~ 65
    Thermal Gradient (Max. 'C/hr) 20 20 20
    Humidity (non-condensing)
  • Operating (%)
  • Non-operating (%)

    • 8 ~ 80
    8 ~ 95
    8 ~ 80
    8 ~ 95
    8 ~ 80
    8 ~ 95
    Maximum Wet Bulb ('C) 26 26 26
    Altitude (relative to sea level)
  • Operating (feet)
  • Non-operating (feet)

    • -200 to 10,000
    -1,000 to 40,000
    -200 to 10,000
    -1,000 to 40,000
    -200 to 10,000
    -1,000 to 40,000
    Shock and Vibration
    Shock (1/2 sine, 11 ms)
  • Operating (G)
  • Non-operating (G)

    • 10
    75
    10
    75
    10
    75
    Vibration (swept sine, 1 oct/min)
  • Operating
  • 5 ~ 21 Hz
  • 22 ~ 400 Hz
  • Non-operating
  • 5 ~ 21 Hz
  • 22 ~ 500 Hz


    • 0.034" (double amp)
    1.5 Gp-p

    0.195" (double amp)
    8 Gp-p

    0.034" (double amp)
    1.5 Gp-p

    0.195" (double amp)
    8 Gp-p

    0.034" (double amp)
    1.5 Gp-p

    0.195" (double amp)
    8 Gp-p
    Power Consumption
    Power Up (max., watts) 12.0 - 16.0
    Read/Write (typical, watts) 4.8 3.9 4.8
    Seek (typical, watts) 5.0 5.0 5.0
    Idle (typical, watts) 3.2 3.5 3.2
    Standby (typical, watts) 1.6 0.8 1.6
    Sleep (typical, watts) 1.7 0.5 1.4
    Acoustic Noise (Maximum value at 1 meter)
    Idle (dBA) 35 35 35
    Random Read/Write (dBA) 40 40 40
    Physical Dimension
    Height (inches/mm) 1/25.4 1/25.4 1/25.4
    Width (inches/mm) 4.02/102.1 4.02/102.1 4.02/102.1
    Depth (inches/mm) 5.77/146.6 5.77/146.6 5.77/146.6
    Weight (lb/kg) 1.2/0.55 1.2/0.55 1.2/0.55

    T-Bird Series,
    3.5-inch Form-Factor
    Low-Profile

  • T-Bird Series
    TBR-31081A
    T-Bird 1
    Capacity, Formatted Mbytes (512 bytes/sector) 1,080.0
    Physical Organization
    Disks 2
    Data Surfaces 4
    Read/Write Heads 4
    Cylinders 4260
    Sectors per Track 80~162
    Logical Organization
    Sectors per Track (max) 63
    Read/Write Heads (max) 16
    Cylinders (max) 2,093
    Functional Specifications
    Actuator Type Rotary Voice Coil
    Interface AT (IDE Type)
    Servo Embedded Sector Servo
    Recording Method 1.7 RLL
    Recording Density (bpi,max.) 75,307
    Flux Density (fcpi,max.) 56,480
    Track Density (tpi) 4,505
    Performance Specifications
    Seek Time (typical)
  • Track to Track (ms)
  • Average (ms)
  • Full Stroke (ms)
  • Average Latency (ms)

    • 3
    9.8
    17
    6.7
    Spindle Speed 5,400
    Data Transfer Rate
  • To/From Media (Mbits/s)
  • To/From Buffer (MBytes/s)

    • 75.56
    16.6
    Command Overhead (ms) 0.1
    Start Time
  • Typical (sec)
  • Maxmum (sec)

    • 6.6
    15
    Stop Time
  • Typical (sec)
  • Maxmum (sec)

    • 6.1
    15
    Interleave 1:1
    Buffer Size (KBytes) 256
    Reliability Specifications
    Recoverable Read Errors per Bits Read 1/10e12
    Correctable Read Errors per Bits Read 1/10e14
    Nonrecoverable Read Errors per Bits Read 1/10e16
    MTBF (power on hours) 500,000
    MTTR (typical minutes) 5
    Start/Stop Cycles 50,000
    Component Design Life (years) 5
    Environmental Specifications
    Temperature
  • Operating ('C)
  • Non-operating ('C)

    • 5 ~ 55
    -40 ~ 70
    Thermal Gradient (Max. 'C/hr) 20
    Humidity (non-condensing)
  • Operating (%)
  • Non-operating (%)

    • 8 ~ 80
    8 ~ 95
    Maximum Wet Bulb ('C) 26
    Altitude (relative to sea level)
  • Operating (feet)
  • Non-operating (feet)

    • -200 to 10,000
    -1,000 to 40,000
    Shock and Vibration
    Shock (1/2 sine, 11 ms)
  • Operating (G)
  • Non-operating (G)

    • 10
    75
    Vibration (swept sine, 1 oct/min)
  • Operating
  • 5 ~ 21 Hz
  • 22 ~ 400 Hz
  • Non-operating
  • 5 ~ 21 Hz
  • 22 ~ 500 Hz


    • 0.034" (double amp)
    1.0 Gp-p

    0.195" (double amp)
    2.0 Gp-p
    Power Consumption
    Power Up (max., watts) 18.0
    Read/Write (typical, watts) 7.7
    Seek (typical, watts) 11.7
    Idle (typical, watts) 4.4
    Standby (typical, watts) 1.2
    Sleep (typical, watts) 1.2
    Acoustic Noise (Maximum value at 1 meter)
    Idle (dBA) 35
    Random Read/Write (dBA) 40
    Physical Dimension
    Height (inches/mm) 1/25.4
    Width (inches/mm) 4.02/102.1
    Depth (inches/mm) 5.77/146.6
    Weight (lb/kg) 1.2/0.55