ST3120025A Seagate 3.5″ hard drive with a storage capacity of 120GB and featuring a IDE interface. ST3120025A Seagate 120GB 7200RPM EIDE/ATA-100 3.5-inch LOW PROFLE 2MB Cache Internal Hard Drive.

All information about the Seagate ST3120025A hard disk drive: technical parameters, failure symptoms, free asked questions, reviews, HDD repair and data recovery.

Seagate ST3120025A Technical Details:

  • Hard Disk Model: SEAGATE ST3120025A
  • Disk Family: U Series 9 120025
  • Form Factor: 3.5″
  • Capacity: 120 GB (120 x 1 000 000 000 bytes)
  • Number Of Disks: 2
  • Number Of Heads: 3
  • Rotational Speed: 7200 RPM
  • Rotation Time: 8.33 ms
  • Average Rotational Latency: 4.17 ms
  • Disk Interface: Ultra-ATA/100
  • Buffer-Host Max. Rate: 100 MB/seconds
  • Buffer Size: 1024 KB
  • Drive Ready Time (typical): 10 seconds
  • Average Seek Time: 8.5 ms
  • Track To Track Seek Time: 1 ms
  • Width: 101.6 mm (4.00 inch)
  • Depth: 146.99 mm (5.79 inch)
  • Height: 26.035 mm (1.03 inch)
  • Weight: 635 grams (1.40 pounds)
  • Acoustic (Idle): 2.7 Bel
  • Acoustic (Min performance and volume): 2.9 Bel
  • Acoustic (Max performance and volume): 2.9 Bel
  • Required Power For Spinup: 2800 mA
  • Power Required (Seek): 12.8 W
  • Power Required (Idle): 7.20 W
  • Power Required (Standby): 0.80 W
  • Manufacturer: Seagate Technology

Seagate ST3120025A Hard Drives:

ST3120025A Seagate 120GB IDE 3.5 Inch Hard Drive

  • ST3120025ACE, 5JT, WU, PN 9W6023-057, FW 4.39, Seagate 120GB IDE 3.5″ Hard Drive
  • ST3120025A, 3JT, AMK, PN 9W6003-030, FW 4.06, Seagate 120GB IDE 3.5″ Hard Drive
  • ST3120025ACE, 5JT, WU, PN 9W6023-160, FW 9.01, Seagate 120GB IDE 3.5″ Hard Drive
  • ST3120025A, 5JT, WU, PN 9W6003-004, FW 4.04, Seagate 120GB IDE 3.5″ Hard Drive
  • ST3120025ACE, 5JT, WU, PN 9W6023-177, FW 9.51, Seagate 120GB IDE 3.5″ Hard Drive
  • ST3120025ACE, 5JT, WU, PN 9W6023-260, FW 9.51, Seagate 120GB IDE 3.5″ Hard Drive
  • ST3120025A, 5JT, WU, PN 9W6003-030, FW 4.06, Seagate 120GB IDE 3.5″ Hard Drive

Seagate ST3120025A Failure Symptoms:

  • Electrical Failure Symptoms:
    Drive is powered, but shows no sign of function;
    Disk knocking as the motor fails to spin;
    Clicking sound as the heads search or initialize;
  • Mechanical Failure Symptoms:
    Clicking, grinding sounds;
    Completely quiet due to ” motor freeze”;
    “music” tone as the disk is powered up;
  • Logical Failure Examples:
    Accidental deletion, accidental format, file corruption, software bugs, file system corruption, viruses and malware, and many, many more.
  • Firmware Failure Symptoms:
    drive powers up, but is not recognised by the computer;
    Drive powers up, but is recognised wrongly, sometimes with nonsensical characters;
    Drive freezes during booting up;
  • Bad Platter Area Symptoms:
    Hard disk still accessible but appear to “hang” or “sluggish”;
    Constant Cyclic Redundancy (CRC) errors;
    Unable to access folders or files which could be seen;
  • Complex Failure Model

Seagate ST3120025A Data Recovery & HDD Repair:

When it comes to data recovery one of the most common problems Seagate ST3120025A Hard Disk Drive experience is burnt circuit board(PCB). So if you will need to match a replacement PCB, it is important that you note the “Board Number” of your current circuit board in addition to the hard drive’s “Model Number“.

Multiple PCB Number revisions:
100306042, 100277699, etc.