AC Typical Characteristics (continued)
Fall Time vs. Turn On
and Turn Off Base Currents
NPN Switching Transistor
(continued)
Fall Time vs. Turn On
and Turn Off Base Currents
POWER DISSIPATION vs
AMBIENT TEMPERATURE
1
0.75
TO-226
SOT-223
0.5
0.25
0
0
25
50
75
100 125 150
TEMPERATURE (oC)
Test Circuit
3.8 V
30 V
VIN = 9.7 V
tr and tf ≤ 1 ns
PW = 1.0 µs
ZIN = 50 Ω
Duty Cycle < 2%
VIN
10 µF
62 Ω
15 Ω
1.0 KΩ
43 Ω
100 Ω
VOUT
1.0 µF
To sampling scope
tr < 1.0 ns
ZIN ≥ 100 KΩ
FIGURE 1: Switching Time Test Circuit
(IC = 500 mA, IB1 = 50 mA, IB2 = 50 mA)