BU941ZT/BU941ZTFP
BUB941ZT
HIGH VOLTAGE IGNITION COIL DRIVER
NPN POWER DARLINGTON
s
VERY RUGGED BIPOLAR TECHNOLOGY
s
BUILT IN CLAMPING ZENER
s
HIGH OPERATING JUNCTION
TEMPERATURE
s
WIDE RANGE OF PACKAGES
s
SURFACE-MOUNTING D2PAK (TO-263)
POWER PACKAGE IN TUBE (NO SUFFIX)
OR IN TAPE & REEL (SUFFIX "T4")
APPLICATIONS
s
HIGH RUGGEDNESS ELECTRONIC
IGNITIONS
INTERNAL SCHEMATIC DIAGRAM
January 1999
1
3
D2PAK
TO-263
1
2
3
TO-220
1
2
3
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
CEO
Collector-Emitter Voltage (I
B
= 0)
350
V
V
EBO
Emitter-Base Voltage (I
C
= 0)
5
V
I
C
Collector Current
15
A
I
CM
Collector Peak Current
30
A
I
B
Base Current
1
A
I
BM
Base Peak Current
5
A
BU941ZT
BU941ZTFP
BUB941ZT
P
tot
Total Dissipation at T
c
= 25
o
C
150
55
150
W
T
stg
Storage Temperature
-65 to 175
-65 to 175
-65 to 175
o
C
T
j
Max. Operating Junction Temperature
175
175
175
o
C
TO-220FP
1/8
THERMAL DATA
TO-220
D2PAK
TO-220FP
R
thj-case
Thermal Resistance Junction-case Max
1
2.7
o
C/W
ELECTRICAL CHARACTERISTICS (T
case
= 25
o
C unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
I
CEO
Collector Cut-off
Current (I
B
= 0)
V
CE
= 300 V
V
CE
= 300 V T
j
= 125
o
C
100
0.5
A
mA
I
EBO
Emitter Cut-off Current
(I
C
= 0)
V
EB
= 5 V
20
mA
V
CL
Clamping Voltage
I
C
= 100 mA
350
500
V
V
CE(sat)
Collector-Emitter
Saturation Voltage
I
C
= 8 A I
B
= 100 mA
I
C
= 10 A I
B
= 250 mA
1.8
1.8
V
V
V
BE(sat)
Base-Emitter
Saturation Voltage
I
C
= 8 A I
B
= 100 mA
I
C
= 10 A I
B
= 250 mA
2.2
2.5
V
V
h
FE
DC Current Gain
I
C
= 5 A V
CE
= 10 V
300
V
F
Diode Forward Voltage
I
F
= 10 A
2.5
V
Functional Test
(see fig. 1)
V
CC
= 24 V L= 7 mH
10
A
t
s
t
f
INDUCTIVE LOAD
Storage Time
Fall Time
(see fig. 3)
V
CC
= 12 V L= 7 mH V
clamp
= 300V
I
C
= 7 A I
B
= 70 mA
V
BE
= 0 R
BE
= 47
15
0.5
s
s
Pulsed: Pulse duration = 300
s, duty cycle 1.5 %
Safe Operating Area
DC Current Gain
BU941ZT / BU941ZTFP / BUB941ZT
2/8
DC Current Gain
Collector-emitter Saturation Voltage
Base-emitter Saturation Voltage
Collector-emitter Saturation Voltage
Base-emitter Saturation Voltage
Collector-emitter Saturation Voltage
BU941ZT / BU941ZTFP / BUB941ZT
3/8
FIGURE 1: Functional Test Circuit
FIGURE 2: Functional Test Waveforms
FIGURE 3: Switching Time Test Circuit
BU941ZT / BU941ZTFP / BUB941ZT
4/8
DIM.
mm
inch
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
A
4.40
4.60
0.173
0.181
C
1.23
1.32
0.048
0.051
D
2.40
2.72
0.094
0.107
D1
1.27
0.050
E
0.49
0.70
0.019
0.027
F
0.61
0.88
0.024
0.034
F1
1.14
1.70
0.044
0.067
F2
1.14
1.70
0.044
0.067
G
4.95
5.15
0.194
0.203
G1
2.4
2.7
0.094
0.106
H2
10.0
10.40
0.393
0.409
L2
16.4
0.645
L4
13.0
14.0
0.511
0.551
L5
2.65
2.95
0.104
0.116
L6
15.25
15.75
0.600
0.620
L7
6.2
6.6
0.244
0.260
L9
3.5
3.93
0.137
0.154
DIA.
3.75
3.85
0.147
0.151
P011C
TO-220 MECHANICAL DATA
BU941ZT / BU941ZTFP / BUB941ZT
5/8
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