Multiple choice

The neutral base width of a bipolar transistor, biased in the active region, is 0.5 $\mu$m. The maximum electron concentration and the diffusion constant in the base are 1014/cm3 and Dn = cm2/sec respectively. Assuming negligible recombination in the base, the collector current density is (Electron charge = 1.6 x 10-19 Coulomb)

  1. 800 A/cm2

  2. 8 A/cm2

  3. 200 A/cm2

  4. 2 A/cm2
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B Correct answer
Explanation

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