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Can anybody identify this component?

Discussion in 'Electronic Design' started by Michael, Oct 7, 2008.

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  1. Michael

    Michael Guest

    Hey there - I was looking at the PCB that is attached to a Dell laptop
    battery. I noticed a very odd component. I then was looking at another
    Dell laptop battery PCB, and noticed a similar component. Can anybody
    identify what this is?

    http://img204.imageshack.us/my.php?image=image001yy7.jpg
    http://img55.imageshack.us/my.php?image=image003uk0.jpg
    http://img381.imageshack.us/my.php?image=image007em4.jpg

    One of them had two of the pins shorted and about 45 ohms between the
    third pin and the two shorted pins. The other had all three leads
    floating with respect to each other.

    Thanks,

    -Michael
     
  2. Guest

    Weird, if this were on a backlight inverter I'd have guessed PZT
    transformer but it looks a bit small for that.
     
  3. PeterD

    PeterD Guest

  4. Guest

    Beats me, but what you normally find on a battery pack is some sort of
    "cell protector" and maybe a PEPI or some sort of short circuit
    protector. The cell protector should be a chip, so maybe this is a
    short circuit protector, but then why would it need 3 terminals.
     
  5. Looks like an SC protector. Google for "sc protector".

    Basically the device works as a fuse that can also be blown by an external
    control current.
    The first one is normal case, the device with floating pins has done its duty.
     
  6. Guest

    http://newlist.ru/battery/images2/Fuse.pdf
    has the Sony datasheet.
     
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