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The first Transistor

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Base resistance<br />

Extrinsic base resistance<br />

ρBX<br />

L ρBX<br />

d<br />

R1<br />

= =<br />

A ( x + x ) W<br />

E<br />

B<br />

Intrinsic base resistance<br />

R<br />

2<br />

ρBIh<br />

=<br />

3x<br />

W<br />

B<br />

Base resistance<br />

R = r<br />

b<br />

= RC<br />

+ R1<br />

+ R2<br />

x<br />

63<br />

Effect of Base Resistance<br />

[B. G. Streetman and S. Banerjee, Solid State Electronic Devices, Prentice Hall, 2000]<br />

64<br />

30

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