BUH51 Datasheet, PDF (7/10 Pages) Motorola, Inc – POWER TRANSISTOR 3 AMPERES 800 VOLTS 50 WATTS

TYPICAL SWITCHING CHARACTERISTICS
BUH51
VCE
dyn 1 µs
0V
dyn 3 µs
90% IB
1 µs
IB
3 µs
TIME
Figure 19. Dynamic Saturation Voltage
Measurements
10
9
IC
8
7
6
5 ^Vclamp
4
3 IB
2
1
0
01
tsi
10% Vclamp
90% IB1
2
3
4
TIME
90% IC
tfi
10% IC
tc
5
6
7
8
Figure 20. Inductive Switching Measurements
Table 1. Inductive Load Switching Drive Circuit
+15 V
1 µF
150 Ω
3W
100 Ω
3W
MTP8P10
100 µF
+10 V
MPF930
MPF930
50 Ω
COMMON
500 µF
MTP8P10
MUR105
RB1
Iout
A
MJE210
RB2
150 Ω
3W
MTP12N10
1 µF
–Voff
IC PEAK
VCE
IB1
IB
VCE PEAK
V(BR)CEO(sus)
L = 10 mH
RB2 = ∞
VCC = 20 Volts
IC(pk) = 100 mA
IB2
Inductive Switching
L = 200 µH
RB2 = 0
VCC = 15 Volts
RB1 selected for
desired IB1
RBSOA
L = 500 µH
RB2 = 0
VCC = 15 Volts
RB1 selected for
desired IB1
TYPICAL THERMAL RESPONSE
1
SECOND BREAKDOWN
0.8
DERATING
0.6
THERMAL DERATING
0.4
0.2
0
20 40
60
80
100 120 140 160
TC, CASE TEMPERATURE (°C)
Figure 21. Forward Bias Power Derating
Motorola Bipolar Power Transistor Device Data
7