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: Avalance and Zener breakdown

Monday, October 5, 2009
Asked by: Jaijith.V.G
Subject: Avalance and Zener breakdown
Question: What is the difference between Avalanche breakdown and Zener breakdown what is the applications
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posted by S @ 1:53 PM  
2 Comments :
  • At December 21, 2009 at 4:19 PM, Blogger sudhir said…

    breakdown means sudden rise in the number of charge carriers due to which current increases suddenly.
    if number of charge carriers are produced due to breakge of covalemt bond because of temperature then the breakdown is avalanche breakdown and if it is due to reverse electric field then breakdown is known as zener breakdown.
    in short the breakdown dueo to thermal energy is avalanche brakdown and due to electric across the junction is known as zener

     
  • At June 11, 2010 at 1:47 PM, Anonymous Anonymous said…

    Avalanche occrs wen a reverse field is applied of magnitude around 25 to 30 volts it provides enuf energy to a electron traversing d junctn 2 knock anodr electron d process continues giving rise to an avalanche of carriers leading to a sudden increase in current. in Zener brkdn a small electric field of around 5v is sufficient to tear out an electron 4m its covalent bond.Basically d diff is that in zener der is no multiplicatn of carriers due 2 collisions.
    Zener diodes are used as Voltage stabilizers

     

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