BU941T/BU941TFI
BU941SM
HIGH VOLTAGE IGNITION COIL DRIVER
NPN POWER DARLINGTON
PRELIMINARY DATA
s
s
s
s
VERY RUGGED BIPOLAR TECHNOLOGY
HIGH OPERATING JUNCTION
TEMPERATURE
WIDE RANGE OF PACKAGES
POWER PACKAGE SPECIFICALLY
DESIGNED FOR SURFACE MOUNTING
(Power SO-10 )
1
2
3
1
2
3
APPLICATIONS
s
HIGH RUGGEDNESS ELECTRONIC
IGNITIONS
TO-220
ISOWATT220
10
1
Power SO-10
INTERNAL SCHEMATIC DIAGRAM
for
Power S O-10
Emitter: pins 1 - 5
Base: pins 6 - 10
Collector: tab
ABSOLUTE MAXIMUM RATINGS
Symbol
V
C ES
V
CEO
V
EBO
I
C
I
CM
I
B
I
B M
P
tot
T
stg
T
j
Parameter
BU941T
Collector-Emitter Voltage (V
BE
= 0)
Collector-Emitter Voltage (I
B
= 0)
Emitter-Base Voltage (I
C
= 0)
Collector Current
Collector Peak Current
Base Current
Base Peak Current
Total Dissipation at T
c
= 25 C
Storage Temperature
Max. Operating Junction Temperature
o
Value
BU941TFI
500
400
5
15
30
1
5
150
-65 to 175
175
55
-65 to 175
175
150
-65 to 175
175
BU941SM
Unit
V
V
V
A
A
A
A
W
o
o
C
C
1/8
Dicember 1993
BU941T/BU941TFI/BU941SM
THERMAL DATA
TO-220
R
thj-cas e
Thermal Resistance Junction-case
Max
o
ISOWATT220 PowerSO-10
2.7
1
o
1
C/W
ELECTRICAL CHARACTERISTICS
(T
case
= 25 C unless otherwise specified)
Symbol
I
CE S
I
CEO
I
E BO
Parameter
Collector Cut-off
Current (V
BE
= 0)
Collector Cut-off
Current (I
B
= 0)
Emitter Cut-off Current
(I
C
= 0)
Test Conditions
V
CE
= 500 V
V
CE
= 500 V
V
CE
= 450 V
V
CE
= 450 V
V
EB
= 5 V
I
C
= 100 mA L = 10 mH I
B
= 0
V
CLAMP
= RATED V
CEO
(See FIG.4)
I
C
= 8 A
I
C
= 10 A
I
C
= 8 A
I
C
= 10 A
I
C
= 5 A
I
F
= 10 A
V
CC
= 24 V V
clamp
= 400 V L= 7 mH
V
CC
= 12 V V
clamp
= 300 V L= 7 mH
I
C
= 7 A I
B
= 70 mA
V
BE
= 0
R
BE
= 47
Ω
10
I
B
= 100 mA
I
B
= 250 mA
I
B
= 100 mA
I
B
= 250 mA
V
CE
= 10 V
300
2.5
V
A
400
1.6
1.8
2.2
2.5
T
j
= 125 C
T
j
= 125 C
o
o
Min.
Typ.
Max.
100
0.5
100
0.5
20
Unit
µA
mA
µA
mA
mA
V
V
V
V
V
V
C EO( SUS )
∗
Collector-Emitter
Saturation Voltage
V
CE (sat)
∗
V
B E(sat)
∗
h
FE
∗
V
F
Collector-Emitter
Saturation Voltage
Base-Emitter
Saturation Voltage
DC Current Gain
Diode Forward Voltage
Functional Test
(see fig. 1)
t
s
t
f
INDUCTIVE LOAD
Storage Time
Fall Time
(see fig. 3)
15
0.5
µs
µs
∗
Pulsed: Pulse durati on = 300
µs,
duty cycle 1.5 %
Safe Operating Areas
DC Current Gain
2/8
BU941T/BU941TFI/BU941SM
DC Current Gain
Collector-emitter Sturation Voltage
Collector-emitter Sturation Voltage
Base-emitter Sturation Voltage
Switching Times Inductive Load (see fig. 3)
3/8
BU941T/BU941TFI/BU941SM
FIGURE 1:
Functional Test Circuit
FIGURE 2:
Functional Test Waveforms
FIGURE 3:
Switching Time Test Circuit
FIGURE 4:
Sustaining Voltage Test Circuit
4/8
BU941T/BU941TFI/BU941SM
TO-220 MECHANICAL DATA
DIM.
MIN.
A
C
D
D1
E
F
F1
F2
G
G1
H2
L2
L4
L5
L6
L7
L9
DIA.
13.0
2.65
15.25
6.2
3.5
3.75
0.49
0.61
1.14
1.14
4.95
2.4
10.0
16.4
14.0
2.95
15.75
6.6
3.93
3.85
0.511
0.104
0.600
0.244
0.137
0.147
4.40
1.23
2.40
1.27
0.70
0.88
1.70
1.70
5.15
2.7
10.40
0.019
0.024
0.044
0.044
0.194
0.094
0.393
0.645
0.551
0.116
0.620
0.260
0.154
0.151
mm
TYP.
MAX.
4.60
1.32
2.72
MIN.
0.173
0.048
0.094
0.050
0.027
0.034
0.067
0.067
0.203
0.106
0.409
inch
TYP.
MAX.
0.181
0.051
0.107
A
C
D1
L2
F1
D
G1
E
Dia.
F2
F
L5
L7
L6
L9
L4
G
H2
P011C
5/8
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