2N4918_04 Datasheet, PDF (3/6 Pages) ON Semiconductor – Medium-Power Plastic PNP Silicon Transistors

2N4918 − 2N4920* Series
40
30
20
10
0
25
50
75
100
125
150
T_C, CASE TEMPERATURE (°C)
Figure 1. Power Derating
V_BE(off)
0
V_in
APPROX
−11 V
t₁
t₂
V_CC
R_C
V_in
R_B
C_jd << C_eb
APPROX 9.0 V
+4.0 V
SCOPE
V_in
0
APPROX
−11 V
t₃
TURN−OFF PULSE
t₁ < 15 ns
100 < t₂ < 500 ms
t₃ < 15 ns
DUTY CYCLE ≈ 2.0%
R_B and R_C
varied to
obtain desired
current levels
Figure 2. Switching Time Equivalent Test Circuit
5.0
3.0
2.0
1.0
0.7 ^{VCC = 30 V}
0.5
0.3 _td
0.2
V_CC = 30 V
I_C/I_B = 20
V_CC = 60 V
I_C/I_B = 10, UNLESS NOTED
T_J = 25°C
T_J = 150°C
t_r
V_CC = 60 V
V_BE(off) = 2.0 V
0.1
0.07
0.05
V_CC = 30 V
V_BE(off) = 0
10
20 30
50 70 100
200 300
I_C, COLLECTOR CURRENT (mA)
Figure 3. Turn−On Time
500 700 1000
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