capacitor identification

Discussion in 'The Projects Forum' started by Decepticon, May 11, 2009.

  1. Decepticon

    Thread Starter New Member

    Mar 30, 2009
    7
    0
    I have a graphics card (Evga Geforce 9500gt) that has had a capacitor 'ripped' off of it. I am trying to identify the codes on it as I am not familiar with the new codes - which is what I am assuming this is.

    On the top of the silver can:

    Logo?: An 'F' with a line above and below it
    853b
    331
    16

    I have figured from searching the 331 that this is a 330pF @ 16v. The polarity is marked with an orange 'stripe' on one side of the top of the can. I am pretty sure I can replace it with a standard 330pF 16v cap but I want to see if anyone on here can identify the manufacturer. I would rather get the exact cap than replace it with one of another manufacturer just to be safe. OR if you think I can replace it with another of the same spec...let me know.

    I will post a pic once I get home and use my decent digital camera.

    Thanks!
     
  2. DonQ

    Active Member

    May 6, 2009
    320
    11
    Your reading of the "codes" sounds right, but it is uncommon to have a polarized capacitor of 330pF. Usually, polarized starts somewhere around 0.1μF (104 -> 100000pF).

    Were you able to find any 331@16V capacitor? I don't think I've ever seen such a thing. Are you sure it's not a 334 with the 4 not showing up well? That would make more sense.

    When you have the right values, getting from the same mfg is not needed. You just need to check that the physical dimensions are also correct. The same value capacitor can come in many different physical sizes.
     
  3. Decepticon

    Thread Starter New Member

    Mar 30, 2009
    7
    0
    Attached are pics of the cap. The first two are the cap in question. The second two are the other caps on the board for reference. I assumed the 16 was 16v when I compared it to the other smaller caps that have the 2.5v. And that is definitely a 331.
     
  4. AlexR

    Well-Known Member

    Jan 16, 2008
    735
    54
    That looks like a 330uF 16Volt electrolytic to me.

    I think you will find that for electrolytic capacitors the number code refers to uF where as for ceramic, film etc the code refers to pF.
     
  5. Decepticon

    Thread Starter New Member

    Mar 30, 2009
    7
    0
    Thanks for the info! Any idea on the manufacturer?
     
  6. DonQ

    Active Member

    May 6, 2009
    320
    11
    Fujitsu.


    Blah, Blah, Blah. My message was too short to be accepted.
     
  7. CDRIVE

    Senior Member

    Jul 1, 2008
    2,223
    99
    It's irrelevant. Just replace it with one with the same specs and observe polarity.
     
  8. Decepticon

    Thread Starter New Member

    Mar 30, 2009
    7
    0
    I replaced it and it's working perfectly! Thanks for all your help!
     
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