. The Bell System technical journal . CURRENT IN AMPERES Fig. 11 — Rectifier characteristics at 80°C. 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 ithe polarity of the junction, then the reverse current will have a con- istant 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 |iis found to be in
. The Bell System technical journal . CURRENT IN AMPERES Fig. 11 — Rectifier characteristics at 80°C. 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 ithe polarity of the junction, then the reverse current will have a con- istant 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 |iis found to be in the range of less than microsecond to more than 4 Q 200< < O tr 100 U i 80 O a 60 o 2 40 UJ U z< 20 < a. < 10u 1 6 8 10 20 40 60 VOLTS 100 200 400 600 1000. Fig. 13 — Capacitance versus reverse voltage in medium size rectifer. DIFFUSED p-n JUNCTION SILICON RECTIFIERS 677 z LUCE q: DO FORWARD REVERSE y^ RECOVERY•*■-- TIME *■ -If TIME, t —*- Fig. 14 — Recovery effect in silicon rectifiers. microseconds. It can be shown that the longer recovery times are associ-ated with higher Hfetimes of minority carriers. Mo
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