2N4921_06 Datasheet, PDF (3/6 Pages) ON Semiconductor – Medium−Power Plastic NPN Silicon Transistors

2N4921, 2N4922, 2N4923
40
30
20
10
0
25
50
75
100
125
150
T_C, CASE TEMPERATURE (°C)
Figure 1. Power Derating
Safe Area Curves are indicated by Figure 5. All limits are applicable and must be observed.
APPROX
+11 V
V_in
TURN−ON PULSE
t₁
V_CC
R_C
V_BE(off)
APPROX
+11 V
V_in
t₂
TURN−OFF PULSE
t₃
SCOPE
V_in
R_B
C_jd << C_eb
−4.0 V
t₁ ≤ 15 ns
100 < t₂ ≤ 500 ms
t₃ ≤ 15 ns
APPROX 9.0 V
DUTY CYCLE ≈ 2.0%
R_B and R_C varied to
obtain desired
current levels
Figure 2. Switching Time Equivalent Circuit
5.0
3.0
V_CC = 30 V
I_C/I_B = 20
I_C/I_B = 10, UNLESS NOTED
T_J = 25°C
2.0
V_CC = 60 V
T_J = 150°C
1.0
0.7
0.5
V_CC = 30 V
0.3 _td
0.2
t_r
V_CC = 60 V
V_BE(off) = 2.0 V
0.1 _{VCC = 30 V}
0.07 _{VBE(off) = 0}
0.05
10
20 30
50 70 100
200 300
I_C, COLLECTOR CURRENT (mA)
500 700 1000
Figure 3. Turn−On Time
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