There are only silicon controlled rectifiers and ___

There are only silicon controlled rectifiers and not germanium because

A. Si is available as compared to Ge.
B. Only Si has stable off-state.
C. Ge is very temperature sensitive.
D. Si only has the characteristic a1 + a2 < 1 at low collector currents and reaches 1 at high currents.
E. Both B & D

Show Answer

Answer: E

Share your understanding of this question with the correct explanation.