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identify transistor

Discussion in 'Datasheets, Manuals and Component Identification' started by laserball, Oct 10, 2015.

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  1. laserball

    laserball

    2
    0
    Oct 10, 2015
    Hi all,
    I have been trying to identify a transistor 018i1.
    I can not find it in any store, what can I replace it with?

    The signal from transistor goes through a resistor to the anode of IR diode.
     

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    Last edited: Oct 10, 2015
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,411
    2,779
    Jan 21, 2010
    Since they've used the same transistor in a multitude of places, it's likely not critical.

    Measure a good one to see if they're PNP or NPN and replace them with some general purpose transistor.
     
  3. laserball

    laserball

    2
    0
    Oct 10, 2015
    Thanks for your answer, i will try and get you know if it works.
     
  4. dorke

    dorke

    2,342
    665
    Jun 20, 2015
    Well,
    It can be Si2399DS ,a P-ch MosFET( code O1).
    Full marking here
    ,
     
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