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substituting transistors

Discussion in 'Beginner Electronics' started by tom, May 12, 2005.

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  1. tom

    tom Guest

    I'm making an amateur radio project and I need help with identifying which
    types of transistors I can substitute for one in a 100mhz oscillator
    component. When I Google it, all I get are pages for selling catalogues of
    spec-data, and endless 'give-us-money' type webpages. I know, this question
    indicates a stunning lack of knowledge about even basic transistor
    knowledge, but I just cannot find the answer anywhere, short of paying a few
    hundred dollars for an entire catalogue or signing up for a 10 week course
    on transistors!
    The schematic says use a BC547, or 2N3904, or a 2N3563, and one schematic
    even says use any transistor with a cut-off point less than 300mhz.
    These are what I have on hand, which (if any, or all) can be used to
    substitute the ones I mentioned?

    mps6514

    8182n4410

    718mps6514

    pn2222a

    mpsao5

    2n4123

    2n4410

    2n4400

    mps6514



    --
    73
    Tom
    VA7FAB
    Skype Name:
    va7fab_tom_in_vancouver
     
  2. Probably any of those.

    Go to Mouser or Digikey for free datasheets.

    Hey, you could always use a 3-pin socket and see which ones work best.

    John Musselman
     
  3. tom

    tom Guest

    Great! I didn't think you could get that infor for free --- thanks.

    --
    73
    Tom
    VA7FAB
    Skype Name:
    va7fab_tom_in_vancouver
     
  4. Rich Grise

    Rich Grise Guest

    http://www.google.com/search?q=2N3904+data+sheet&btnG=Google+Search
    http://www.google.com/search?q=mps6514+data+sheet&btnG=Google+Search
    http://www.google.com/search?q=pn2222a+data+sheet&btnG=Google+Search
    http://www.google.com/search?q=mpsa05+data+sheet&btnG=Google+Search
    (that's zero five, not oh five)
    http://www.google.com/search?q=2n4400+data+sheet&btnG=Google+Search

    Actually, just surf to http://www.google.com and put
    "xxxx data sheet" into the text box, without the quotes.

    Works for me. :)

    Cheers!
    Rich
     
  5. Gar

    Gar Guest

    Go to
    http://www.nteinc.com/
    Download QuickCROSS Version 11.0. Put in the 2N3904 to look up the NTE
    equivalent. You can then put any transistors in that you have on hand and
    see if they match the NTE number you just got. NTE replacement parts are
    readily available.
     
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