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提问人：网友flaura
发布时间：2022-01-07
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Webster effect in a BJT reduces the transit time.
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For a homojunction BJT, to obtain a high base-to collector current amplification factor.(beta), the emitter should be highly doped and the base should be lightly doped.
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Comparing with a uniform base region, the graded doping in the base region of a BJT can cause a built-in electric field and this field will increase the transit time.
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