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What is this? A fuse?

Discussion in 'Troubleshooting and Repair' started by Alex abahmed, Apr 19, 2015.

  1. Alex abahmed

    Alex abahmed

    3
    0
    Apr 19, 2015
    Hey so I'm fixing an old Yamaha ta20 wedge amp from the 60's and it has a bunch of these battery looking things. Not sure exactly what they are but this one in particular reads 337ohms. I tried looking up the part number printed in the front but could find anything helpful. I have a feeling it's a fuse but if it was there should be no resistance? Any help would be appreciated image.jpg image.jpg
     
  2. davenn

    davenn Moderator

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    Sep 5, 2009
    Hi Alex
    welcome to EP :)

    its a power transistor

    I find no reference for the 25092, its not a standard transistor manufacturing part #
    so is probably an inhouse part number of the equipment manufacturer


    Dave
     
  3. Neal

    Neal

    23
    12
    Dec 23, 2009
    It's a 2SD92 npn
     
    Gryd3 and davenn like this.
  4. davenn

    davenn Moderator

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    Sep 5, 2009
    you mite be right !! :)

    the pic is so blurry I may have misread it

    Alex, can you please confirm that number ?


    Dave
     
  5. Alex abahmed

    Alex abahmed

    3
    0
    Apr 19, 2015
    Thanks! Yeah sorry the picture was so blurry, but you were right it says 25092. Do you know how I could figure out what to replace it with if that's an in house part number and not a type of transistor? Or is that what Neal was saying? It's a 2sd92 npn?
     
  6. davenn

    davenn Moderator

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    Sep 5, 2009
    can you please rephoto it and get it really sharp
     
  7. Alex abahmed

    Alex abahmed

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    0
    Apr 19, 2015
     

    Attached Files:

  8. Neal

    Neal

    23
    12
    Dec 23, 2009
    [​IMG] 2SD92


    Part Number 2SD92
    Date Code 00+
    Manufacturer TOSHIBA
    Package/Case TO-66
    Stock
     
  9. davenn

    davenn Moderator

    13,346
    1,774
    Sep 5, 2009
    thanks for the clarification pic, Alex :)

    yup definitely 2SD92 :)
     
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