676 



THE BELL SYSTEM TECHNICAL JOURNAL, MAY 1956 



CURRENT IN AMPERES 



Fig. 12 — Rectifier characteristics at 125°C. 



the reverse direction is equal to the forward current before reversing i 

 the polarity of the junction, then the reverse current will have a con- i 

 stant magnitude, limited ])y the circuit resistance, for a time known as •' 

 the recovery time before it decays to a small steady-state value. Fig. 14 . 

 shows graphically this effect. The recovery time in diffused junctions |i 

 is found to be in the range of less than 0.1 microsecond to more than 4 



Q 200 

 < 



< 



O 



tr 100 



U 



i 80 



O 



a 60 



o 



2 



40 



UJ 



U 



z 

 < 



20 



< 



a. 



< 10 

 u 





1 



6 8 10 



20 40 60 



VOLTS 



100 200 400 600 1000. 



Fig. 13 — Capacitance versus reverse voltage in medium size rectifer. 



