Need help with pins for c3205 transistor, emitter base collector?

Discussion in 'General Electronics Chat' started by sdowney717, Apr 25, 2015.

  1. sdowney717

    Thread Starter Member

    Jul 18, 2012
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    13
    Can someone share what pins are what for the c3205?
    Thanks
     
  2. Papabravo

    Expert

    Feb 24, 2006
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  3. sdowney717

    Thread Starter Member

    Jul 18, 2012
    385
    13
    Takes me to substitute part NTE11?
    will this be the same pins?
    I had actually seen that earlier, but I want to make sure I am not seeing things wrongly.

    I also doing image search saw this, looks like it is the same orientation?
    I need some one to confirm, this is a bottom view, with leads pointing towards you ?

    And is a c3205 an appropriate sub for a 2n2222?
    I thought I verified before , but what do I know...
    thanks
    It will be used as a slow switch, not some kind of high frequency thing.

    Oh, well, I suppose that is the end.
    c3205pins.png
     
    Last edited: Apr 25, 2015
  4. Papabravo

    Expert

    Feb 24, 2006
    10,138
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    As I interpret the drawing, looking down on the flat with the pins pointing towards you, pin 1, the Eimtter is on your left, pin 2, the collector is in the center, and pin 3, the base is on the right. Is it an exact replacement, probably not; is it close enough probably it is. The only way to confirm this is to go to the datasheets and look for parameters to compare. You don't suppose we want to deprive you of the pleasure of confirming this for yourself -- do you?
     
  5. ian field

    Distinguished Member

    Oct 27, 2012
    4,413
    782
    If you have a continuity tested, the transistor will read like 2 back-to-back diodes - then all you have to do is distinguish between the E & C junctions which are both common to the base.

    The B/E junction behaves like a zener at somewhere around 5 - 8V. If you have a very sensitive continuity tester with higher energising voltage than that, it will show a little bit of leakage.

    You could probably get by with a 3mm ultra-efficient LED (2mA), a 10k resistor and a 12V security key-fob battery.
     
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