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Is there any multiple base trasistors

Discussion in 'Electronic Components' started by ranjeet, Oct 21, 2004.

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  1. ranjeet

    ranjeet Guest

    Dear Friends,
    I am an electronics graduate. And i used to study about multiple
    emitter transistors and multiple collector transistors in my digital
    electronics paper.
    They are included in most of the gate architectures like TTL and IIL.
    Then i wonder why there is no multiple base transistors. And if
    someone like that is present then the design of ECL will be much more
    simple. So I want to know that is there any stuctural difficulties for
    making a multiple base transistor. Or is there any exists. So if
    anyone know more about them please give me the details. I will be much
    greatful to you.

    Regards,
    Renjith.R
     
  2. Norm Dresner

    Norm Dresner Guest

    http://www.intel.com/pressroom/archive/releases/20030612tech.htm

    describes one example.

    Try to Google for
    "transistor gate structure"
    without the quotes -- which is what I did -- and you'll get a few hits on
    the first page to multiple gate transistor structures

    Norm
     
  3. legg

    legg Guest

    You might be interested to note that multiple base and multiple
    emitter discrete transistors were JEDEC registered and marketed up
    into the early '70s.

    TI produced dual-base bipolars 3N34,35 and others including 3N56 in
    TO-12 packages (4-lead TO-5), as well as dual emitter NPN parts 3N74
    through 3N79 and dual emitter PNP parts 3N108 through 3N111 in TO-72
    packages (4-lead TO-18).

    These were second-sourced by Sprague.

    Some custom IC mfrs will provide breadboading devices with multiple
    lead components taken discretely to package pins, to their customers,
    to aid in simulating the final integrated part.

    There are so many more flexible alternatives to using this structure
    in discrete applications, that it is unlikely to be marketed as such,
    again.

    RL
     
  4. ranjeet

    ranjeet Guest

    hi Norm

    i am ranjeet. I have tried the search and got so much information
    about the
    multiple gate structures. But that structures are not actually what i
    am searching for. They are just three dimensional realisation of the
    normal gate for scaling down the device to nanometer range. I am in
    search of a device which have more than one bases. That means the
    transistor should act as a number of transistors whose emitters and
    collectros are connected together. Do you have any clue. Then please
    inform me.

    Thanks and Regards,

    Ranjeet
     
  5. ranjeet

    ranjeet Guest

    thank you for the valuable information
    regards
    ranjeet
     
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