DESIGN THEORY OF JUNCTION TRANSISTORS 





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(a) 



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(b) 



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Fig. 5 — Equivalent circuits for junction transistors. 



tances, whose variation with barrier potential must now be considered 

 explicitly. 



5.0 DESIGN CALCULATIONS 



5.1 General 



The understanding of junction transistors is now sufficiently ad- 

 vanced that this type of device is designable — the engineer may work 

 from requirements to choice of structure and material. The limitations 

 on designability are now primarily lack of adequate control over manu- 

 facturing variables together with the inherent characteristics of the 



