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
Valu e
Uni t
V
CEO
Collect or-Emitter Voltage (I
B
= 0)
350
V
V
EBO
Emitter-Base Voltage (I
C
= 0)
5
V
I
C
Collect or Current
15
A
I
CM
Collect or Peak Current
30
A
I
B
Base Current
1
A
I
BM
Base Peak Current
5
A
BU941Z T
BU941Z TF P
BUB941ZT
P
t ot
Tot al Dissipation at T
c
= 25
o
C
150
55
150
W
T
stg
Storage T emperat ure
-65 to 175
-65 to 175
-65 to 175
o
C
T
j
Max. O perating Junction Temperature
175
175
175
o
C
TO-220FP
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THERMAL DATA
TO -220
D2PAK
T O-220F P
R
t hj-ca se
Thermal Resistance Junction-case
Max
1
2. 7
o
C/W
ELECTRICAL CHARACTERISTICS (T
case
= 25
o
C unless otherwise specified)
Symb ol
Parameter
Test Cond ition s
Mi n.
Typ .
Max.
Un it
I
CEO
Collector Cut -of f
Current (I
B
= 0)
V
CE
= 300 V
V
CE
= 300 V
T
j
= 125
o
C
100
0.5
A
mA
I
EBO
Emitt er Cut -of f 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-Emit ter
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(s at)
Base-Emitt er
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
F E
DC Current Gain
I
C
= 5 A
V
CE
= 10 V
300
V
F
Diode F orward Voltage
I
F
= 10 A
2.5
V
Funct ional T est
(see fig. 1)
V
CC
= 24 V L= 7 mH
10
A
t
s
t
f
INDUCTIVE LO AD
St orage 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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