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Two Leg Transistor

Discussion in 'General Electronics Discussion' started by hello, May 16, 2013.

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  1. hello

    hello

    1
    0
    May 16, 2013
    Is there any transistor having two legs?:confused::confused:
     
  2. Miguel Lopez

    Miguel Lopez

    252
    63
    Jan 25, 2012
    Something like this? Third terminal is the case, but it has only two legs

    [​IMG]

    I know transistors with only one junction, but I guess there are not transistors with ONLY two terminals
     
  3. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,497
    2,838
    Jan 21, 2010
    No, that's called a TO-3 package.

    The case is connected to one terminal -- the collector.

    Yes there are other transistors with 2 leads:

    1) some photo-transistors don't have the base lead exposed.
    2) some surface mount transisotrs have a package where the metal tab is the collector and there are only 2 other leads (sometimes the third appears to be cut short)
     
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