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Identified SMD component - FOUND SMD CODES!

Discussion in 'Modding' started by P.YO, Aug 15, 2004.

  1. P.YO

    P.YO Member

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    Need help identifying the specs of a little SMD component, which looks like a capacitor (black with 2 pads on the underside) with marking J476. It has a grey line on the top left near the edge (just above the pad) next to the marking, which i think indicates polarity (-ve). So it this a polarised cap?

    Pics:

    [​IMG]

    [​IMG]

    [​IMG]
     
    Last edited: Aug 18, 2004
  2. Goth

    Goth Grumpy Member

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    Post a photo, to be 100% sure.

    How big is it?
     
  3. OP
    OP
    P.YO

    P.YO Member

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    need someone to host the pic

    3.2mm x 1.6mm rectangle

    goth: u got email?
     
    Last edited: Aug 17, 2004
  4. autoexec

    autoexec Member

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  5. OP
    OP
    P.YO

    P.YO Member

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    pics added, hope it helps
     
  6. heller44

    heller44 Member

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    If anyone does know what this is, let us all know where you got the info from.. still looking for a decent listing of smd codes.

    closest I could put it would maybe be a diode of some type. possibly zener.
     
  7. MEX

    MEX Member

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    that looks like a diode
     
    Last edited: Aug 18, 2004
  8. Kenny12

    Kenny12 Member

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    yea its a diode
     
  9. OP
    OP
    P.YO

    P.YO Member

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    hmm.. diode
    anyone know whether it's a zener or a signal diode?
    and how about the codes or voltage?

    dam thing has 20k resistance.
     
    Last edited: Aug 18, 2004
  10. Kenny12

    Kenny12 Member

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    um.. 20k resistance.. are u sure ur not measureing that the wrong way? it might be

    1. broken
    2. not a diode
    3. you measured it the wrong way,

    i don't think its a resistor
     
  11. MEX

    MEX Member

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    it will be a single diode

    as for the resistance not sure about that sounds like the component might have somthing on it or it is faulty

    not sure there should be a large resistance through a diode but not sure how large
     
  12. OP
    OP
    P.YO

    P.YO Member

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    1. no not measuring the wrong way (both ways gives 20k)
    2. not broken, this is a working one on the circuit board
    3. dunno what it is if it is not a diode
     
  13. OP
    OP
    P.YO

    P.YO Member

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    I have found the answer!

    http://www.knaber.dk/smd-codebook/

    ^ answer to all ur needs

    it turn out that this is a capacitor

    _J______476___
    6.3V 47x10^6 pF

    It's 47uF!

    Can I buy one of these off someone? (10V Eletrolytic 47uF) Cos I don't want to buy 10 from Jaycar. :(
     
    Last edited: Aug 18, 2004
  14. Kenny12

    Kenny12 Member

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    wow thats a lot of resistance for a capacitor
     
  15. hlokk

    hlokk Member

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    Under a DC voltage there should be no current passing at all so pretty much infinite resistance (diff for AC or transients obviously)
     
  16. Goth

    Goth Grumpy Member

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    Yep, that's certainly an electrolytic capacitor
     
  17. sonyx

    sonyx Member

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    hmmm.. its probably a capacitor as it follows the regulations listing.. 47 of some value, probably 47 nano farads, 6 volts..
     
  18. heller44

    heller44 Member

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    i agree according to the info on that page, but...

    why 20k ohms then if it isn't stuffed?
     
  19. MWP

    MWP Member

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    Nope. Not a resistor either.
    Stop guessing guys...

    Its a 6.3V 47uF Solid Tantalum capacitor.
    The line points to the +Ve side by the way.
     
    Last edited: Aug 20, 2004
  20. Goth

    Goth Grumpy Member

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    That's what i meant.

    Basically all SMD high-capacitance capacitors are Tantalum based
     

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