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Transistor ID help find

Discussion in 'Datasheets, Manuals and Component Identification' started by ken2028, Feb 25, 2013.

  1. ken2028

    ken2028

    8
    0
    Feb 25, 2013
    Hello,

    I am looking for this Motorola Transistor..

    I drew an exact picture on the transistor..

    Can someone help me please identify this transistor?

    So I can find a replacement

    thank you...
     

    Attached Files:

  2. davenn

    davenn Moderator

    13,347
    1,774
    Sep 5, 2009
    HI Ken
    welcome to the forums :)

    I tried 2N7929 without much success
    there is sure to be a prefix .... manufacturers often leave them off the package grrrr

    what is the device out of ?
    do you know for sure that it is faulty?

    a little more info from you :)

    Dave
     
  3. ken2028

    ken2028

    8
    0
    Feb 25, 2013
    here

    I took a picture
     

    Attached Files:

  4. ken2028

    ken2028

    8
    0
    Feb 25, 2013
    another picture

    did a resistance and polarity check
     

    Attached Files:

  5. shrtrnd

    shrtrnd

    3,676
    454
    Jan 15, 2010
    Motorola no longer exists.
    (They''re now 'ON Semiconductor')
    This may not help, but when I need to know On Semi full part numbers, I've gone
    to the On Semiconductor website, and used their 'Contact' selection to send my
    inquiry. So far, with ON Semi devices, they've replied to my request with the full
    part number. Maybe they'd do it for old Motorola part numbers?
     
  6. ken2028

    ken2028

    8
    0
    Feb 25, 2013
    :(

    I cant believe its so hard to find a replacement :(

    I dont know what to do

    Can't I use a substitute PNP?
     
  7. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,214
    2,695
    Jan 21, 2010
    Without specs, or perhaps the schematic so we can see what is required, yes it can be hard.

    It's a bit like having a bolt and looking for a replacement without knowing the size, thread type, length, material, etc.

    edit: If the circuit os not very demanding of any particular parameter, then yes, you may be able to replace it with something that is not a direct replacement. Of course we don't know it's actually a PNP transistor (presumably you do)
     
  8. ken2028

    ken2028

    8
    0
    Feb 25, 2013
    I dont have a transistor analyzer.. I wish I had a DCA55 analyser
     
  9. duke37

    duke37

    5,256
    726
    Jan 9, 2011
    Depending on what your meter does, it may be a germanium transistor with about 0.25 drop across the junctions. The base is the middle pin. You can find which is the emitter and collector by measuring the gain either way round. The measurements you have made would indicate that it is OK.

    What is the age of the equipment?
     
  10. ken2028

    ken2028

    8
    0
    Feb 25, 2013
    Look what I recieved

    Thank you for contacting ON Semiconductor



    Your part number is most likely customer special part SPS9599 which has been discontinued. We can not disclose any information regarding custom part numbers. Sorry for any inconvenience caused.

    Regards, Martin
    ON Semiconductor
    Technical Support Center

    Subject: here is the actual transistor

    Description of customer request:

    I need your please. I am looking for this part or a substitute for it.. I am sending you a picture..

    Thank you so much...
     
  11. shrtrnd

    shrtrnd

    3,676
    454
    Jan 15, 2010
    Well, it's difficult finding data on your transistor because it's a proprietary part number.
    At least you now know that much.
     
  12. ken2028

    ken2028

    8
    0
    Feb 25, 2013
    :(

    HFE 260
     
  13. ken2028

    ken2028

    8
    0
    Feb 25, 2013
    I bought this
    LCM3 ESR C,L meter,tester/ 90 kHz and Semiconductor tester
     
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