State the correct reason for neglecting pnp transistor.

State the correct reason for neglecting pnp transistor. Correct Answer Current gain of pnp transistor is as low as 1.5 to 30

Lateral pnp transistor has inferior characteristic as the base width is usually larger controlled by lateral diffusion of p-type impurities and photographic limitations during mask marking and alignment. Therefore, pnp transistor normally gives current gain as low as 1.5 to 30 compared to 50-300 for the npn transistor.
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