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In an SCR with four layers represented as shown in the given figure, which are the layers that are equally doped?
  • a)
    P1 and N2
  • b)
    P2 and N2
  • c)
    P1 and N1
  • d)
    N1 and N2
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
In an SCR with four layers represented as shown in the given figure, w...

Construction:
  • The SCR is a four-layer and three-terminal device.
  • The four layers made of P and N layers are arranged alternately such that they form three junctions J1, J2, and J3.
  • These junctions are either alloyed or diffused based on the type of construction.
Doping level:
  • The level of doping varies between the different layers of the thyristor.
  • Out of these four layers, the first layer (P1 or P+) and Last layer (N2 or N+) are heavily doped layers.
  • The second layer (N1 or N-) is a lightly doped layer and the third layer (P2 or P+) is a moderately doped layer.
  • The junction J1 is formed by the P+ layer and N- layer.
  • Junction J2 is formed by the N- layer and P+ layer
  • Junction J3 is formed by P+ layer and N+ layer.
  • Thinner layers would mean that the device would break down at lower voltages.
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Community Answer
In an SCR with four layers represented as shown in the given figure, w...

Construction:
  • The SCR is a four-layer and three-terminal device.
  • The four layers made of P and N layers are arranged alternately such that they form three junctions J1, J2, and J3.
  • These junctions are either alloyed or diffused based on the type of construction.
Doping level:
  • The level of doping varies between the different layers of the thyristor.
  • Out of these four layers, the first layer (P1 or P+) and Last layer (N2 or N+) are heavily doped layers.
  • The second layer (N1 or N-) is a lightly doped layer and the third layer (P2 or P+) is a moderately doped layer.
  • The junction J1 is formed by the P+ layer and N- layer.
  • Junction J2 is formed by the N- layer and P+ layer
  • Junction J3 is formed by P+ layer and N+ layer.
  • Thinner layers would mean that the device would break down at lower voltages.
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In an SCR with four layers represented as shown in the given figure, which are the layers that are equally doped?a)P1and N2b)P2and N2c)P1and N1d)N1and N2Correct answer is option 'A'. Can you explain this answer?
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