Multiple choice

A Silicon PN junction at a temperature of 20°C has a reverse saturation current of 10 pico-Amperes (pA). The reverse saturation current at 40°C for the same bias is approximately

  1. 30 pA

  2. 40 pA

  3. 50 pA

  4. 60 pA
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The reverse saturation current doubles for every $10^\circ C$ rise in temperature as follows $I_0 (T) = I_{01} \times 2^{(T-T_1)/10}$

Thus at $40^\circ C, \ I_0 = 40\ pA$

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