Temperature characteristics of semi conductor diodes

Discussion in 'Homework Help' started by ngrobertson, Aug 3, 2011.

  1. ngrobertson

    Thread Starter New Member

    Mar 18, 2011
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    I am trying to determine what effect temparature has on semi conductor diodes. I have read that they have a negative coefficient so they are inversely proportional to to cold /heat. Yet more reading indicates that P.I.V. is directly proportional to temparature. Also what effect does temp have on the burn out point and the voltage barrier (knee)???:confused:
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,645
    2,344
    Hello,

    Read this quote:

    This comes from this page:
    http://www.vias.org/encyclopedia/semicond_diode_basics.html

    Bertus
     
  3. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Some kinds of diodes have positive and some negative temperature coefficient. Refer to the datasheet of each to see what it is.
     
  4. ngrobertson

    Thread Starter New Member

    Mar 18, 2011
    11
    0
    There are no spec sheets for this excercise, that is what is frustrating. If I am reading the question correctly, it is semi conductors (general) & how termperature effects (hot or cold) will affect their burn out point, barrier (knee) and P.I.V.. If what you say is correct, than my answer would read that the diode is directly/inversley proportinate and temp would affect accordingly....:rolleyes:
     
  5. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Normal p-n diodes and BJTs have negative temperature coefficient.
     
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